Mercurial > hg > truffle
annotate src/os/solaris/vm/os_solaris.cpp @ 8854:754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
Summary: Ergonomics now also takes available virtual memory into account when deciding for a heap size. The helper method to determine the maximum allocatable memory block now uses the appropriate OS specific calls to retrieve available virtual memory for the java process. In 32 bit environments this method now also searches for the maximum actually reservable amount of memory. Merge previously separate implementations for Linux/BSD/Solaris into a single method.
Reviewed-by: jmasa, tamao
| author | tschatzl |
|---|---|
| date | Wed, 27 Mar 2013 19:21:18 +0100 |
| parents | 15401203db6b |
| children | b9a918201d47 8be1318fbe77 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 // no precompiled headers |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/systemDictionary.hpp" | |
| 28 #include "classfile/vmSymbols.hpp" | |
| 29 #include "code/icBuffer.hpp" | |
| 30 #include "code/vtableStubs.hpp" | |
| 31 #include "compiler/compileBroker.hpp" | |
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32 #include "compiler/disassembler.hpp" |
| 1972 | 33 #include "interpreter/interpreter.hpp" |
| 34 #include "jvm_solaris.h" | |
| 35 #include "memory/allocation.inline.hpp" | |
| 36 #include "memory/filemap.hpp" | |
| 37 #include "mutex_solaris.inline.hpp" | |
| 38 #include "oops/oop.inline.hpp" | |
| 39 #include "os_share_solaris.hpp" | |
| 40 #include "prims/jniFastGetField.hpp" | |
| 41 #include "prims/jvm.h" | |
| 42 #include "prims/jvm_misc.hpp" | |
| 43 #include "runtime/arguments.hpp" | |
| 44 #include "runtime/extendedPC.hpp" | |
| 45 #include "runtime/globals.hpp" | |
| 46 #include "runtime/interfaceSupport.hpp" | |
| 47 #include "runtime/java.hpp" | |
| 48 #include "runtime/javaCalls.hpp" | |
| 49 #include "runtime/mutexLocker.hpp" | |
| 50 #include "runtime/objectMonitor.hpp" | |
| 51 #include "runtime/osThread.hpp" | |
| 52 #include "runtime/perfMemory.hpp" | |
| 53 #include "runtime/sharedRuntime.hpp" | |
| 54 #include "runtime/statSampler.hpp" | |
| 55 #include "runtime/stubRoutines.hpp" | |
|
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56 #include "runtime/thread.inline.hpp" |
| 1972 | 57 #include "runtime/threadCritical.hpp" |
| 58 #include "runtime/timer.hpp" | |
| 59 #include "services/attachListener.hpp" | |
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60 #include "services/memTracker.hpp" |
| 1972 | 61 #include "services/runtimeService.hpp" |
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62 #include "utilities/decoder.hpp" |
| 1972 | 63 #include "utilities/defaultStream.hpp" |
| 64 #include "utilities/events.hpp" | |
| 65 #include "utilities/growableArray.hpp" | |
| 66 #include "utilities/vmError.hpp" | |
| 0 | 67 |
| 68 // put OS-includes here | |
| 69 # include <dlfcn.h> | |
| 70 # include <errno.h> | |
|
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71 # include <exception> |
| 0 | 72 # include <link.h> |
| 73 # include <poll.h> | |
| 74 # include <pthread.h> | |
| 75 # include <pwd.h> | |
| 76 # include <schedctl.h> | |
| 77 # include <setjmp.h> | |
| 78 # include <signal.h> | |
| 79 # include <stdio.h> | |
| 80 # include <alloca.h> | |
| 81 # include <sys/filio.h> | |
| 82 # include <sys/ipc.h> | |
| 83 # include <sys/lwp.h> | |
| 84 # include <sys/machelf.h> // for elf Sym structure used by dladdr1 | |
| 85 # include <sys/mman.h> | |
| 86 # include <sys/processor.h> | |
| 87 # include <sys/procset.h> | |
| 88 # include <sys/pset.h> | |
| 89 # include <sys/resource.h> | |
| 90 # include <sys/shm.h> | |
| 91 # include <sys/socket.h> | |
| 92 # include <sys/stat.h> | |
| 93 # include <sys/systeminfo.h> | |
| 94 # include <sys/time.h> | |
| 95 # include <sys/times.h> | |
| 96 # include <sys/types.h> | |
| 97 # include <sys/wait.h> | |
| 98 # include <sys/utsname.h> | |
| 99 # include <thread.h> | |
| 100 # include <unistd.h> | |
| 101 # include <sys/priocntl.h> | |
| 102 # include <sys/rtpriocntl.h> | |
| 103 # include <sys/tspriocntl.h> | |
| 104 # include <sys/iapriocntl.h> | |
|
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105 # include <sys/fxpriocntl.h> |
| 0 | 106 # include <sys/loadavg.h> |
| 107 # include <string.h> | |
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108 # include <stdio.h> |
| 0 | 109 |
| 110 # define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later | |
| 111 # include <sys/procfs.h> // see comment in <sys/procfs.h> | |
| 112 | |
| 113 #define MAX_PATH (2 * K) | |
| 114 | |
| 115 // for timer info max values which include all bits | |
| 116 #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) | |
| 117 | |
| 118 #ifdef _GNU_SOURCE | |
| 119 // See bug #6514594 | |
| 120 extern "C" int madvise(caddr_t, size_t, int); | |
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121 extern "C" int memcntl(caddr_t addr, size_t len, int cmd, caddr_t arg, |
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122 int attr, int mask); |
| 0 | 123 #endif //_GNU_SOURCE |
| 124 | |
| 125 /* | |
| 126 MPSS Changes Start. | |
| 127 The JVM binary needs to be built and run on pre-Solaris 9 | |
| 128 systems, but the constants needed by MPSS are only in Solaris 9 | |
| 129 header files. They are textually replicated here to allow | |
| 130 building on earlier systems. Once building on Solaris 8 is | |
| 131 no longer a requirement, these #defines can be replaced by ordinary | |
| 132 system .h inclusion. | |
| 133 | |
| 134 In earlier versions of the JDK and Solaris, we used ISM for large pages. | |
| 135 But ISM requires shared memory to achieve this and thus has many caveats. | |
| 136 MPSS is a fully transparent and is a cleaner way to get large pages. | |
| 137 Although we still require keeping ISM for backward compatiblitiy as well as | |
| 138 giving the opportunity to use large pages on older systems it is | |
| 139 recommended that MPSS be used for Solaris 9 and above. | |
| 140 | |
| 141 */ | |
| 142 | |
| 143 #ifndef MC_HAT_ADVISE | |
| 144 | |
| 145 struct memcntl_mha { | |
| 146 uint_t mha_cmd; /* command(s) */ | |
| 147 uint_t mha_flags; | |
| 148 size_t mha_pagesize; | |
| 149 }; | |
| 150 #define MC_HAT_ADVISE 7 /* advise hat map size */ | |
| 151 #define MHA_MAPSIZE_VA 0x1 /* set preferred page size */ | |
| 152 #define MAP_ALIGN 0x200 /* addr specifies alignment */ | |
| 153 | |
| 154 #endif | |
| 155 // MPSS Changes End. | |
| 156 | |
| 157 | |
| 158 // Here are some liblgrp types from sys/lgrp_user.h to be able to | |
| 159 // compile on older systems without this header file. | |
| 160 | |
| 161 #ifndef MADV_ACCESS_LWP | |
| 162 # define MADV_ACCESS_LWP 7 /* next LWP to access heavily */ | |
| 163 #endif | |
| 164 #ifndef MADV_ACCESS_MANY | |
| 165 # define MADV_ACCESS_MANY 8 /* many processes to access heavily */ | |
| 166 #endif | |
| 167 | |
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168 #ifndef LGRP_RSRC_CPU |
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169 # define LGRP_RSRC_CPU 0 /* CPU resources */ |
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170 #endif |
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171 #ifndef LGRP_RSRC_MEM |
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172 # define LGRP_RSRC_MEM 1 /* memory resources */ |
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173 #endif |
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174 |
| 0 | 175 // Some more macros from sys/mman.h that are not present in Solaris 8. |
| 176 | |
| 177 #ifndef MAX_MEMINFO_CNT | |
| 178 /* | |
| 179 * info_req request type definitions for meminfo | |
| 180 * request types starting with MEMINFO_V are used for Virtual addresses | |
| 181 * and should not be mixed with MEMINFO_PLGRP which is targeted for Physical | |
| 182 * addresses | |
| 183 */ | |
| 184 # define MEMINFO_SHIFT 16 | |
| 185 # define MEMINFO_MASK (0xFF << MEMINFO_SHIFT) | |
| 186 # define MEMINFO_VPHYSICAL (0x01 << MEMINFO_SHIFT) /* get physical addr */ | |
| 187 # define MEMINFO_VLGRP (0x02 << MEMINFO_SHIFT) /* get lgroup */ | |
| 188 # define MEMINFO_VPAGESIZE (0x03 << MEMINFO_SHIFT) /* size of phys page */ | |
| 189 # define MEMINFO_VREPLCNT (0x04 << MEMINFO_SHIFT) /* no. of replica */ | |
| 190 # define MEMINFO_VREPL (0x05 << MEMINFO_SHIFT) /* physical replica */ | |
| 191 # define MEMINFO_VREPL_LGRP (0x06 << MEMINFO_SHIFT) /* lgrp of replica */ | |
| 192 # define MEMINFO_PLGRP (0x07 << MEMINFO_SHIFT) /* lgroup for paddr */ | |
| 193 | |
| 194 /* maximum number of addresses meminfo() can process at a time */ | |
| 195 # define MAX_MEMINFO_CNT 256 | |
| 196 | |
| 197 /* maximum number of request types */ | |
| 198 # define MAX_MEMINFO_REQ 31 | |
| 199 #endif | |
| 200 | |
| 201 // see thr_setprio(3T) for the basis of these numbers | |
| 202 #define MinimumPriority 0 | |
| 203 #define NormalPriority 64 | |
| 204 #define MaximumPriority 127 | |
| 205 | |
| 206 // Values for ThreadPriorityPolicy == 1 | |
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207 int prio_policy1[CriticalPriority+1] = { |
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208 -99999, 0, 16, 32, 48, 64, |
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209 80, 96, 112, 124, 127, 127 }; |
| 0 | 210 |
| 211 // System parameters used internally | |
| 212 static clock_t clock_tics_per_sec = 100; | |
| 213 | |
|
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214 // Track if we have called enable_extended_FILE_stdio (on Solaris 10u4+) |
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215 static bool enabled_extended_FILE_stdio = false; |
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216 |
| 0 | 217 // For diagnostics to print a message once. see run_periodic_checks |
| 218 static bool check_addr0_done = false; | |
| 219 static sigset_t check_signal_done; | |
| 220 static bool check_signals = true; | |
| 221 | |
| 222 address os::Solaris::handler_start; // start pc of thr_sighndlrinfo | |
| 223 address os::Solaris::handler_end; // end pc of thr_sighndlrinfo | |
| 224 | |
| 225 address os::Solaris::_main_stack_base = NULL; // 4352906 workaround | |
| 226 | |
| 227 | |
| 228 // "default" initializers for missing libc APIs | |
| 229 extern "C" { | |
| 230 static int lwp_mutex_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
| 231 static int lwp_mutex_destroy(mutex_t *mx) { return 0; } | |
| 232 | |
| 233 static int lwp_cond_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
| 234 static int lwp_cond_destroy(cond_t *cv) { return 0; } | |
| 235 } | |
| 236 | |
| 237 // "default" initializers for pthread-based synchronization | |
| 238 extern "C" { | |
| 239 static int pthread_mutex_default_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
| 240 static int pthread_cond_default_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
| 241 } | |
| 242 | |
| 243 // Thread Local Storage | |
| 244 // This is common to all Solaris platforms so it is defined here, | |
| 245 // in this common file. | |
| 246 // The declarations are in the os_cpu threadLS*.hpp files. | |
| 247 // | |
| 248 // Static member initialization for TLS | |
| 249 Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL}; | |
| 250 | |
| 251 #ifndef PRODUCT | |
| 252 #define _PCT(n,d) ((100.0*(double)(n))/(double)(d)) | |
| 253 | |
| 254 int ThreadLocalStorage::_tcacheHit = 0; | |
| 255 int ThreadLocalStorage::_tcacheMiss = 0; | |
| 256 | |
| 257 void ThreadLocalStorage::print_statistics() { | |
| 258 int total = _tcacheMiss+_tcacheHit; | |
| 259 tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n", | |
| 260 _tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total)); | |
| 261 } | |
| 262 #undef _PCT | |
| 263 #endif // PRODUCT | |
| 264 | |
| 265 Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id, | |
| 266 int index) { | |
| 267 Thread *thread = get_thread_slow(); | |
| 268 if (thread != NULL) { | |
| 269 address sp = os::current_stack_pointer(); | |
| 270 guarantee(thread->_stack_base == NULL || | |
| 271 (sp <= thread->_stack_base && | |
| 272 sp >= thread->_stack_base - thread->_stack_size) || | |
| 273 is_error_reported(), | |
| 274 "sp must be inside of selected thread stack"); | |
| 275 | |
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276 thread->set_self_raw_id(raw_id); // mark for quick retrieval |
| 0 | 277 _get_thread_cache[ index ] = thread; |
| 278 } | |
| 279 return thread; | |
| 280 } | |
| 281 | |
| 282 | |
| 283 static const double all_zero[ sizeof(Thread) / sizeof(double) + 1 ] = {0}; | |
| 284 #define NO_CACHED_THREAD ((Thread*)all_zero) | |
| 285 | |
| 286 void ThreadLocalStorage::pd_set_thread(Thread* thread) { | |
| 287 | |
| 288 // Store the new value before updating the cache to prevent a race | |
| 289 // between get_thread_via_cache_slowly() and this store operation. | |
| 290 os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread); | |
| 291 | |
| 292 // Update thread cache with new thread if setting on thread create, | |
| 293 // or NO_CACHED_THREAD (zeroed) thread if resetting thread on exit. | |
| 294 uintptr_t raw = pd_raw_thread_id(); | |
| 295 int ix = pd_cache_index(raw); | |
| 296 _get_thread_cache[ix] = thread == NULL ? NO_CACHED_THREAD : thread; | |
| 297 } | |
| 298 | |
| 299 void ThreadLocalStorage::pd_init() { | |
| 300 for (int i = 0; i < _pd_cache_size; i++) { | |
| 301 _get_thread_cache[i] = NO_CACHED_THREAD; | |
| 302 } | |
| 303 } | |
| 304 | |
| 305 // Invalidate all the caches (happens to be the same as pd_init). | |
| 306 void ThreadLocalStorage::pd_invalidate_all() { pd_init(); } | |
| 307 | |
| 308 #undef NO_CACHED_THREAD | |
| 309 | |
| 310 // END Thread Local Storage | |
| 311 | |
| 312 static inline size_t adjust_stack_size(address base, size_t size) { | |
| 313 if ((ssize_t)size < 0) { | |
| 314 // 4759953: Compensate for ridiculous stack size. | |
| 315 size = max_intx; | |
| 316 } | |
| 317 if (size > (size_t)base) { | |
| 318 // 4812466: Make sure size doesn't allow the stack to wrap the address space. | |
| 319 size = (size_t)base; | |
| 320 } | |
| 321 return size; | |
| 322 } | |
| 323 | |
| 324 static inline stack_t get_stack_info() { | |
| 325 stack_t st; | |
| 326 int retval = thr_stksegment(&st); | |
| 327 st.ss_size = adjust_stack_size((address)st.ss_sp, st.ss_size); | |
| 328 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
| 329 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
| 330 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
| 331 return st; | |
| 332 } | |
| 333 | |
| 334 address os::current_stack_base() { | |
| 335 int r = thr_main() ; | |
| 336 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
| 337 bool is_primordial_thread = r; | |
| 338 | |
| 339 // Workaround 4352906, avoid calls to thr_stksegment by | |
| 340 // thr_main after the first one (it looks like we trash | |
| 341 // some data, causing the value for ss_sp to be incorrect). | |
| 342 if (!is_primordial_thread || os::Solaris::_main_stack_base == NULL) { | |
| 343 stack_t st = get_stack_info(); | |
| 344 if (is_primordial_thread) { | |
| 345 // cache initial value of stack base | |
| 346 os::Solaris::_main_stack_base = (address)st.ss_sp; | |
| 347 } | |
| 348 return (address)st.ss_sp; | |
| 349 } else { | |
| 350 guarantee(os::Solaris::_main_stack_base != NULL, "Attempt to use null cached stack base"); | |
| 351 return os::Solaris::_main_stack_base; | |
| 352 } | |
| 353 } | |
| 354 | |
| 355 size_t os::current_stack_size() { | |
| 356 size_t size; | |
| 357 | |
| 358 int r = thr_main() ; | |
| 359 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
| 360 if(!r) { | |
| 361 size = get_stack_info().ss_size; | |
| 362 } else { | |
| 363 struct rlimit limits; | |
| 364 getrlimit(RLIMIT_STACK, &limits); | |
| 365 size = adjust_stack_size(os::Solaris::_main_stack_base, (size_t)limits.rlim_cur); | |
| 366 } | |
| 367 // base may not be page aligned | |
| 368 address base = current_stack_base(); | |
| 369 address bottom = (address)align_size_up((intptr_t)(base - size), os::vm_page_size());; | |
| 370 return (size_t)(base - bottom); | |
| 371 } | |
| 372 | |
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373 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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374 return localtime_r(clock, res); |
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375 } |
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376 |
| 0 | 377 // interruptible infrastructure |
| 378 | |
| 379 // setup_interruptible saves the thread state before going into an | |
| 380 // interruptible system call. | |
| 381 // The saved state is used to restore the thread to | |
| 382 // its former state whether or not an interrupt is received. | |
| 383 // Used by classloader os::read | |
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384 // os::restartable_read calls skip this layer and stay in _thread_in_native |
| 0 | 385 |
| 386 void os::Solaris::setup_interruptible(JavaThread* thread) { | |
| 387 | |
| 388 JavaThreadState thread_state = thread->thread_state(); | |
| 389 | |
| 390 assert(thread_state != _thread_blocked, "Coming from the wrong thread"); | |
| 391 assert(thread_state != _thread_in_native, "Native threads skip setup_interruptible"); | |
| 392 OSThread* osthread = thread->osthread(); | |
| 393 osthread->set_saved_interrupt_thread_state(thread_state); | |
| 394 thread->frame_anchor()->make_walkable(thread); | |
| 395 ThreadStateTransition::transition(thread, thread_state, _thread_blocked); | |
| 396 } | |
| 397 | |
| 398 // Version of setup_interruptible() for threads that are already in | |
| 399 // _thread_blocked. Used by os_sleep(). | |
| 400 void os::Solaris::setup_interruptible_already_blocked(JavaThread* thread) { | |
| 401 thread->frame_anchor()->make_walkable(thread); | |
| 402 } | |
| 403 | |
| 404 JavaThread* os::Solaris::setup_interruptible() { | |
| 405 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
| 406 setup_interruptible(thread); | |
| 407 return thread; | |
| 408 } | |
| 409 | |
| 410 void os::Solaris::try_enable_extended_io() { | |
| 411 typedef int (*enable_extended_FILE_stdio_t)(int, int); | |
| 412 | |
| 413 if (!UseExtendedFileIO) { | |
| 414 return; | |
| 415 } | |
| 416 | |
| 417 enable_extended_FILE_stdio_t enabler = | |
| 418 (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT, | |
| 419 "enable_extended_FILE_stdio"); | |
| 420 if (enabler) { | |
| 421 enabler(-1, -1); | |
| 422 } | |
| 423 } | |
| 424 | |
| 425 | |
| 426 #ifdef ASSERT | |
| 427 | |
| 428 JavaThread* os::Solaris::setup_interruptible_native() { | |
| 429 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
| 430 JavaThreadState thread_state = thread->thread_state(); | |
| 431 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
| 432 return thread; | |
| 433 } | |
| 434 | |
| 435 void os::Solaris::cleanup_interruptible_native(JavaThread* thread) { | |
| 436 JavaThreadState thread_state = thread->thread_state(); | |
| 437 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
| 438 } | |
| 439 #endif | |
| 440 | |
| 441 // cleanup_interruptible reverses the effects of setup_interruptible | |
| 442 // setup_interruptible_already_blocked() does not need any cleanup. | |
| 443 | |
| 444 void os::Solaris::cleanup_interruptible(JavaThread* thread) { | |
| 445 OSThread* osthread = thread->osthread(); | |
| 446 | |
| 447 ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state()); | |
| 448 } | |
| 449 | |
| 450 // I/O interruption related counters called in _INTERRUPTIBLE | |
| 451 | |
| 452 void os::Solaris::bump_interrupted_before_count() { | |
| 453 RuntimeService::record_interrupted_before_count(); | |
| 454 } | |
| 455 | |
| 456 void os::Solaris::bump_interrupted_during_count() { | |
| 457 RuntimeService::record_interrupted_during_count(); | |
| 458 } | |
| 459 | |
| 460 static int _processors_online = 0; | |
| 461 | |
| 462 jint os::Solaris::_os_thread_limit = 0; | |
| 463 volatile jint os::Solaris::_os_thread_count = 0; | |
| 464 | |
| 465 julong os::available_memory() { | |
| 466 return Solaris::available_memory(); | |
| 467 } | |
| 468 | |
| 469 julong os::Solaris::available_memory() { | |
| 470 return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size(); | |
| 471 } | |
| 472 | |
| 473 julong os::Solaris::_physical_memory = 0; | |
| 474 | |
| 475 julong os::physical_memory() { | |
| 476 return Solaris::physical_memory(); | |
| 477 } | |
| 478 | |
| 479 static hrtime_t first_hrtime = 0; | |
| 480 static const hrtime_t hrtime_hz = 1000*1000*1000; | |
| 481 const int LOCK_BUSY = 1; | |
| 482 const int LOCK_FREE = 0; | |
| 483 const int LOCK_INVALID = -1; | |
| 484 static volatile hrtime_t max_hrtime = 0; | |
| 485 static volatile int max_hrtime_lock = LOCK_FREE; // Update counter with LSB as lock-in-progress | |
| 486 | |
| 487 | |
| 488 void os::Solaris::initialize_system_info() { | |
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489 set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); |
| 0 | 490 _processors_online = sysconf (_SC_NPROCESSORS_ONLN); |
| 491 _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); | |
| 492 } | |
| 493 | |
| 494 int os::active_processor_count() { | |
| 495 int online_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
| 496 pid_t pid = getpid(); | |
| 497 psetid_t pset = PS_NONE; | |
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498 // Are we running in a processor set or is there any processor set around? |
| 0 | 499 if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) { |
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500 uint_t pset_cpus; |
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501 // Query the number of cpus available to us. |
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502 if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) { |
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503 assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check"); |
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504 _processors_online = pset_cpus; |
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505 return pset_cpus; |
| 0 | 506 } |
| 507 } | |
| 508 // Otherwise return number of online cpus | |
| 509 return online_cpus; | |
| 510 } | |
| 511 | |
| 512 static bool find_processors_in_pset(psetid_t pset, | |
| 513 processorid_t** id_array, | |
| 514 uint_t* id_length) { | |
| 515 bool result = false; | |
| 516 // Find the number of processors in the processor set. | |
| 517 if (pset_info(pset, NULL, id_length, NULL) == 0) { | |
| 518 // Make up an array to hold their ids. | |
| 6197 | 519 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
| 0 | 520 // Fill in the array with their processor ids. |
| 521 if (pset_info(pset, NULL, id_length, *id_array) == 0) { | |
| 522 result = true; | |
| 523 } | |
| 524 } | |
| 525 return result; | |
| 526 } | |
| 527 | |
| 528 // Callers of find_processors_online() must tolerate imprecise results -- | |
| 529 // the system configuration can change asynchronously because of DR | |
| 530 // or explicit psradm operations. | |
| 531 // | |
| 532 // We also need to take care that the loop (below) terminates as the | |
| 533 // number of processors online can change between the _SC_NPROCESSORS_ONLN | |
| 534 // request and the loop that builds the list of processor ids. Unfortunately | |
| 535 // there's no reliable way to determine the maximum valid processor id, | |
| 536 // so we use a manifest constant, MAX_PROCESSOR_ID, instead. See p_online | |
| 537 // man pages, which claim the processor id set is "sparse, but | |
| 538 // not too sparse". MAX_PROCESSOR_ID is used to ensure that we eventually | |
| 539 // exit the loop. | |
| 540 // | |
| 541 // In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's | |
| 542 // not available on S8.0. | |
| 543 | |
| 544 static bool find_processors_online(processorid_t** id_array, | |
| 545 uint* id_length) { | |
| 546 const processorid_t MAX_PROCESSOR_ID = 100000 ; | |
| 547 // Find the number of processors online. | |
| 548 *id_length = sysconf(_SC_NPROCESSORS_ONLN); | |
| 549 // Make up an array to hold their ids. | |
| 6197 | 550 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
| 0 | 551 // Processors need not be numbered consecutively. |
| 552 long found = 0; | |
| 553 processorid_t next = 0; | |
| 554 while (found < *id_length && next < MAX_PROCESSOR_ID) { | |
| 555 processor_info_t info; | |
| 556 if (processor_info(next, &info) == 0) { | |
| 557 // NB, PI_NOINTR processors are effectively online ... | |
| 558 if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) { | |
| 559 (*id_array)[found] = next; | |
| 560 found += 1; | |
| 561 } | |
| 562 } | |
| 563 next += 1; | |
| 564 } | |
| 565 if (found < *id_length) { | |
| 566 // The loop above didn't identify the expected number of processors. | |
| 567 // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN) | |
| 568 // and re-running the loop, above, but there's no guarantee of progress | |
| 569 // if the system configuration is in flux. Instead, we just return what | |
| 570 // we've got. Note that in the worst case find_processors_online() could | |
| 571 // return an empty set. (As a fall-back in the case of the empty set we | |
| 572 // could just return the ID of the current processor). | |
| 573 *id_length = found ; | |
| 574 } | |
| 575 | |
| 576 return true; | |
| 577 } | |
| 578 | |
| 579 static bool assign_distribution(processorid_t* id_array, | |
| 580 uint id_length, | |
| 581 uint* distribution, | |
| 582 uint distribution_length) { | |
| 583 // We assume we can assign processorid_t's to uint's. | |
| 584 assert(sizeof(processorid_t) == sizeof(uint), | |
| 585 "can't convert processorid_t to uint"); | |
| 586 // Quick check to see if we won't succeed. | |
| 587 if (id_length < distribution_length) { | |
| 588 return false; | |
| 589 } | |
| 590 // Assign processor ids to the distribution. | |
| 591 // Try to shuffle processors to distribute work across boards, | |
| 592 // assuming 4 processors per board. | |
| 593 const uint processors_per_board = ProcessDistributionStride; | |
| 594 // Find the maximum processor id. | |
| 595 processorid_t max_id = 0; | |
| 596 for (uint m = 0; m < id_length; m += 1) { | |
| 597 max_id = MAX2(max_id, id_array[m]); | |
| 598 } | |
| 599 // The next id, to limit loops. | |
| 600 const processorid_t limit_id = max_id + 1; | |
| 601 // Make up markers for available processors. | |
| 6197 | 602 bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id, mtInternal); |
| 0 | 603 for (uint c = 0; c < limit_id; c += 1) { |
| 604 available_id[c] = false; | |
| 605 } | |
| 606 for (uint a = 0; a < id_length; a += 1) { | |
| 607 available_id[id_array[a]] = true; | |
| 608 } | |
| 609 // Step by "boards", then by "slot", copying to "assigned". | |
| 610 // NEEDS_CLEANUP: The assignment of processors should be stateful, | |
| 611 // remembering which processors have been assigned by | |
| 612 // previous calls, etc., so as to distribute several | |
| 613 // independent calls of this method. What we'd like is | |
| 614 // It would be nice to have an API that let us ask | |
| 615 // how many processes are bound to a processor, | |
| 616 // but we don't have that, either. | |
| 617 // In the short term, "board" is static so that | |
| 618 // subsequent distributions don't all start at board 0. | |
| 619 static uint board = 0; | |
| 620 uint assigned = 0; | |
| 621 // Until we've found enough processors .... | |
| 622 while (assigned < distribution_length) { | |
| 623 // ... find the next available processor in the board. | |
| 624 for (uint slot = 0; slot < processors_per_board; slot += 1) { | |
| 625 uint try_id = board * processors_per_board + slot; | |
| 626 if ((try_id < limit_id) && (available_id[try_id] == true)) { | |
| 627 distribution[assigned] = try_id; | |
| 628 available_id[try_id] = false; | |
| 629 assigned += 1; | |
| 630 break; | |
| 631 } | |
| 632 } | |
| 633 board += 1; | |
| 634 if (board * processors_per_board + 0 >= limit_id) { | |
| 635 board = 0; | |
| 636 } | |
| 637 } | |
| 638 if (available_id != NULL) { | |
| 6197 | 639 FREE_C_HEAP_ARRAY(bool, available_id, mtInternal); |
| 0 | 640 } |
| 641 return true; | |
| 642 } | |
| 643 | |
| 4006 | 644 void os::set_native_thread_name(const char *name) { |
| 645 // Not yet implemented. | |
| 646 return; | |
| 647 } | |
| 648 | |
| 0 | 649 bool os::distribute_processes(uint length, uint* distribution) { |
| 650 bool result = false; | |
| 651 // Find the processor id's of all the available CPUs. | |
| 652 processorid_t* id_array = NULL; | |
| 653 uint id_length = 0; | |
| 654 // There are some races between querying information and using it, | |
| 655 // since processor sets can change dynamically. | |
| 656 psetid_t pset = PS_NONE; | |
| 657 // Are we running in a processor set? | |
| 658 if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) { | |
| 659 result = find_processors_in_pset(pset, &id_array, &id_length); | |
| 660 } else { | |
| 661 result = find_processors_online(&id_array, &id_length); | |
| 662 } | |
| 663 if (result == true) { | |
| 664 if (id_length >= length) { | |
| 665 result = assign_distribution(id_array, id_length, distribution, length); | |
| 666 } else { | |
| 667 result = false; | |
| 668 } | |
| 669 } | |
| 670 if (id_array != NULL) { | |
| 6197 | 671 FREE_C_HEAP_ARRAY(processorid_t, id_array, mtInternal); |
| 0 | 672 } |
| 673 return result; | |
| 674 } | |
| 675 | |
| 676 bool os::bind_to_processor(uint processor_id) { | |
| 677 // We assume that a processorid_t can be stored in a uint. | |
| 678 assert(sizeof(uint) == sizeof(processorid_t), | |
| 679 "can't convert uint to processorid_t"); | |
| 680 int bind_result = | |
| 681 processor_bind(P_LWPID, // bind LWP. | |
| 682 P_MYID, // bind current LWP. | |
| 683 (processorid_t) processor_id, // id. | |
| 684 NULL); // don't return old binding. | |
| 685 return (bind_result == 0); | |
| 686 } | |
| 687 | |
| 688 bool os::getenv(const char* name, char* buffer, int len) { | |
| 689 char* val = ::getenv( name ); | |
| 690 if ( val == NULL | |
| 691 || strlen(val) + 1 > len ) { | |
| 692 if (len > 0) buffer[0] = 0; // return a null string | |
| 693 return false; | |
| 694 } | |
| 695 strcpy( buffer, val ); | |
| 696 return true; | |
| 697 } | |
| 698 | |
| 699 | |
| 700 // Return true if user is running as root. | |
| 701 | |
| 702 bool os::have_special_privileges() { | |
| 703 static bool init = false; | |
| 704 static bool privileges = false; | |
| 705 if (!init) { | |
| 706 privileges = (getuid() != geteuid()) || (getgid() != getegid()); | |
| 707 init = true; | |
| 708 } | |
| 709 return privileges; | |
| 710 } | |
| 711 | |
| 712 | |
| 713 void os::init_system_properties_values() { | |
| 714 char arch[12]; | |
| 715 sysinfo(SI_ARCHITECTURE, arch, sizeof(arch)); | |
| 716 | |
| 717 // The next steps are taken in the product version: | |
| 718 // | |
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719 // Obtain the JAVA_HOME value from the location of libjvm.so. |
| 0 | 720 // This library should be located at: |
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721 // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm.so. |
| 0 | 722 // |
| 723 // If "/jre/lib/" appears at the right place in the path, then we | |
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724 // assume libjvm.so is installed in a JDK and we use this path. |
| 0 | 725 // |
| 726 // Otherwise exit with message: "Could not create the Java virtual machine." | |
| 727 // | |
| 728 // The following extra steps are taken in the debugging version: | |
| 729 // | |
| 730 // If "/jre/lib/" does NOT appear at the right place in the path | |
| 731 // instead of exit check for $JAVA_HOME environment variable. | |
| 732 // | |
| 733 // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, | |
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734 // then we append a fake suffix "hotspot/libjvm.so" to this path so |
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735 // it looks like libjvm.so is installed there |
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736 // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm.so. |
| 0 | 737 // |
| 738 // Otherwise exit. | |
| 739 // | |
| 740 // Important note: if the location of libjvm.so changes this | |
| 741 // code needs to be changed accordingly. | |
| 742 | |
| 743 // The next few definitions allow the code to be verbatim: | |
| 6197 | 744 #define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n), mtInternal) |
| 745 #define free(p) FREE_C_HEAP_ARRAY(char, p, mtInternal) | |
| 0 | 746 #define getenv(n) ::getenv(n) |
| 747 | |
| 748 #define EXTENSIONS_DIR "/lib/ext" | |
| 749 #define ENDORSED_DIR "/lib/endorsed" | |
| 750 #define COMMON_DIR "/usr/jdk/packages" | |
| 751 | |
| 752 { | |
| 753 /* sysclasspath, java_home, dll_dir */ | |
| 754 { | |
| 755 char *home_path; | |
| 756 char *dll_path; | |
| 757 char *pslash; | |
| 758 char buf[MAXPATHLEN]; | |
| 759 os::jvm_path(buf, sizeof(buf)); | |
| 760 | |
| 761 // Found the full path to libjvm.so. | |
| 762 // Now cut the path to <java_home>/jre if we can. | |
| 763 *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ | |
| 764 pslash = strrchr(buf, '/'); | |
| 765 if (pslash != NULL) | |
| 766 *pslash = '\0'; /* get rid of /{client|server|hotspot} */ | |
| 767 dll_path = malloc(strlen(buf) + 1); | |
| 768 if (dll_path == NULL) | |
| 769 return; | |
| 770 strcpy(dll_path, buf); | |
| 771 Arguments::set_dll_dir(dll_path); | |
| 772 | |
| 773 if (pslash != NULL) { | |
| 774 pslash = strrchr(buf, '/'); | |
| 775 if (pslash != NULL) { | |
| 776 *pslash = '\0'; /* get rid of /<arch> */ | |
| 777 pslash = strrchr(buf, '/'); | |
| 778 if (pslash != NULL) | |
| 779 *pslash = '\0'; /* get rid of /lib */ | |
| 780 } | |
| 781 } | |
| 782 | |
| 783 home_path = malloc(strlen(buf) + 1); | |
| 784 if (home_path == NULL) | |
| 785 return; | |
| 786 strcpy(home_path, buf); | |
| 787 Arguments::set_java_home(home_path); | |
| 788 | |
| 789 if (!set_boot_path('/', ':')) | |
| 790 return; | |
| 791 } | |
| 792 | |
| 793 /* | |
| 794 * Where to look for native libraries | |
| 795 */ | |
| 796 { | |
| 797 // Use dlinfo() to determine the correct java.library.path. | |
| 798 // | |
| 799 // If we're launched by the Java launcher, and the user | |
| 800 // does not set java.library.path explicitly on the commandline, | |
| 801 // the Java launcher sets LD_LIBRARY_PATH for us and unsets | |
| 802 // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64. In this case | |
| 803 // dlinfo returns LD_LIBRARY_PATH + crle settings (including | |
| 804 // /usr/lib), which is exactly what we want. | |
| 805 // | |
| 806 // If the user does set java.library.path, it completely | |
| 807 // overwrites this setting, and always has. | |
| 808 // | |
| 809 // If we're not launched by the Java launcher, we may | |
| 810 // get here with any/all of the LD_LIBRARY_PATH[_32|64] | |
| 811 // settings. Again, dlinfo does exactly what we want. | |
| 812 | |
| 813 Dl_serinfo _info, *info = &_info; | |
| 814 Dl_serpath *path; | |
| 815 char* library_path; | |
| 816 char *common_path; | |
| 817 int i; | |
| 818 | |
| 819 // determine search path count and required buffer size | |
| 820 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) { | |
| 821 vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror()); | |
| 822 } | |
| 823 | |
| 824 // allocate new buffer and initialize | |
| 825 info = (Dl_serinfo*)malloc(_info.dls_size); | |
| 826 if (info == NULL) { | |
| 827 vm_exit_out_of_memory(_info.dls_size, | |
| 828 "init_system_properties_values info"); | |
| 829 } | |
| 830 info->dls_size = _info.dls_size; | |
| 831 info->dls_cnt = _info.dls_cnt; | |
| 832 | |
| 833 // obtain search path information | |
| 834 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) { | |
| 835 free(info); | |
| 836 vm_exit_during_initialization("dlinfo SERINFO request", dlerror()); | |
| 837 } | |
| 838 | |
| 839 path = &info->dls_serpath[0]; | |
| 840 | |
| 841 // Note: Due to a legacy implementation, most of the library path | |
| 842 // is set in the launcher. This was to accomodate linking restrictions | |
| 843 // on legacy Solaris implementations (which are no longer supported). | |
| 844 // Eventually, all the library path setting will be done here. | |
| 845 // | |
| 846 // However, to prevent the proliferation of improperly built native | |
| 847 // libraries, the new path component /usr/jdk/packages is added here. | |
| 848 | |
| 849 // Determine the actual CPU architecture. | |
| 850 char cpu_arch[12]; | |
| 851 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); | |
| 852 #ifdef _LP64 | |
| 853 // If we are a 64-bit vm, perform the following translations: | |
| 854 // sparc -> sparcv9 | |
| 855 // i386 -> amd64 | |
| 856 if (strcmp(cpu_arch, "sparc") == 0) | |
| 857 strcat(cpu_arch, "v9"); | |
| 858 else if (strcmp(cpu_arch, "i386") == 0) | |
| 859 strcpy(cpu_arch, "amd64"); | |
| 860 #endif | |
| 861 | |
| 862 // Construct the invariant part of ld_library_path. Note that the | |
| 863 // space for the colon and the trailing null are provided by the | |
| 864 // nulls included by the sizeof operator. | |
| 865 size_t bufsize = sizeof(COMMON_DIR) + sizeof("/lib/") + strlen(cpu_arch); | |
| 866 common_path = malloc(bufsize); | |
| 867 if (common_path == NULL) { | |
| 868 free(info); | |
| 869 vm_exit_out_of_memory(bufsize, | |
| 870 "init_system_properties_values common_path"); | |
| 871 } | |
| 872 sprintf(common_path, COMMON_DIR "/lib/%s", cpu_arch); | |
| 873 | |
| 874 // struct size is more than sufficient for the path components obtained | |
| 875 // through the dlinfo() call, so only add additional space for the path | |
| 876 // components explicitly added here. | |
| 877 bufsize = info->dls_size + strlen(common_path); | |
| 878 library_path = malloc(bufsize); | |
| 879 if (library_path == NULL) { | |
| 880 free(info); | |
| 881 free(common_path); | |
| 882 vm_exit_out_of_memory(bufsize, | |
| 883 "init_system_properties_values library_path"); | |
| 884 } | |
| 885 library_path[0] = '\0'; | |
| 886 | |
| 887 // Construct the desired Java library path from the linker's library | |
| 888 // search path. | |
| 889 // | |
| 890 // For compatibility, it is optimal that we insert the additional path | |
| 891 // components specific to the Java VM after those components specified | |
| 892 // in LD_LIBRARY_PATH (if any) but before those added by the ld.so | |
| 893 // infrastructure. | |
| 894 if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it | |
| 895 strcpy(library_path, common_path); | |
| 896 } else { | |
| 897 int inserted = 0; | |
| 898 for (i = 0; i < info->dls_cnt; i++, path++) { | |
| 899 uint_t flags = path->dls_flags & LA_SER_MASK; | |
| 900 if (((flags & LA_SER_LIBPATH) == 0) && !inserted) { | |
| 901 strcat(library_path, common_path); | |
| 902 strcat(library_path, os::path_separator()); | |
| 903 inserted = 1; | |
| 904 } | |
| 905 strcat(library_path, path->dls_name); | |
| 906 strcat(library_path, os::path_separator()); | |
| 907 } | |
| 908 // eliminate trailing path separator | |
| 909 library_path[strlen(library_path)-1] = '\0'; | |
| 910 } | |
| 911 | |
| 912 // happens before argument parsing - can't use a trace flag | |
| 913 // tty->print_raw("init_system_properties_values: native lib path: "); | |
| 914 // tty->print_raw_cr(library_path); | |
| 915 | |
| 916 // callee copies into its own buffer | |
| 917 Arguments::set_library_path(library_path); | |
| 918 | |
| 919 free(common_path); | |
| 920 free(library_path); | |
| 921 free(info); | |
| 922 } | |
| 923 | |
| 924 /* | |
| 925 * Extensions directories. | |
| 926 * | |
| 927 * Note that the space for the colon and the trailing null are provided | |
| 928 * by the nulls included by the sizeof operator (so actually one byte more | |
| 929 * than necessary is allocated). | |
| 930 */ | |
| 931 { | |
| 932 char *buf = (char *) malloc(strlen(Arguments::get_java_home()) + | |
| 933 sizeof(EXTENSIONS_DIR) + sizeof(COMMON_DIR) + | |
| 934 sizeof(EXTENSIONS_DIR)); | |
| 935 sprintf(buf, "%s" EXTENSIONS_DIR ":" COMMON_DIR EXTENSIONS_DIR, | |
| 936 Arguments::get_java_home()); | |
| 937 Arguments::set_ext_dirs(buf); | |
| 938 } | |
| 939 | |
| 940 /* Endorsed standards default directory. */ | |
| 941 { | |
| 942 char * buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR)); | |
| 943 sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home()); | |
| 944 Arguments::set_endorsed_dirs(buf); | |
| 945 } | |
| 946 } | |
| 947 | |
| 948 #undef malloc | |
| 949 #undef free | |
| 950 #undef getenv | |
| 951 #undef EXTENSIONS_DIR | |
| 952 #undef ENDORSED_DIR | |
| 953 #undef COMMON_DIR | |
| 954 | |
| 955 } | |
| 956 | |
| 957 void os::breakpoint() { | |
| 958 BREAKPOINT; | |
| 959 } | |
| 960 | |
| 961 bool os::obsolete_option(const JavaVMOption *option) | |
| 962 { | |
| 963 if (!strncmp(option->optionString, "-Xt", 3)) { | |
| 964 return true; | |
| 965 } else if (!strncmp(option->optionString, "-Xtm", 4)) { | |
| 966 return true; | |
| 967 } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) { | |
| 968 return true; | |
| 969 } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) { | |
| 970 return true; | |
| 971 } | |
| 972 return false; | |
| 973 } | |
| 974 | |
| 975 bool os::Solaris::valid_stack_address(Thread* thread, address sp) { | |
| 976 address stackStart = (address)thread->stack_base(); | |
| 977 address stackEnd = (address)(stackStart - (address)thread->stack_size()); | |
| 978 if (sp < stackStart && sp >= stackEnd ) return true; | |
| 979 return false; | |
| 980 } | |
| 981 | |
| 982 extern "C" void breakpoint() { | |
| 983 // use debugger to set breakpoint here | |
| 984 } | |
| 985 | |
| 986 static thread_t main_thread; | |
| 987 | |
| 988 // Thread start routine for all new Java threads | |
| 989 extern "C" void* java_start(void* thread_addr) { | |
| 990 // Try to randomize the cache line index of hot stack frames. | |
| 991 // This helps when threads of the same stack traces evict each other's | |
| 992 // cache lines. The threads can be either from the same JVM instance, or | |
| 993 // from different JVM instances. The benefit is especially true for | |
| 994 // processors with hyperthreading technology. | |
| 995 static int counter = 0; | |
| 996 int pid = os::current_process_id(); | |
| 997 alloca(((pid ^ counter++) & 7) * 128); | |
| 998 | |
| 999 int prio; | |
| 1000 Thread* thread = (Thread*)thread_addr; | |
| 1001 OSThread* osthr = thread->osthread(); | |
| 1002 | |
| 1003 osthr->set_lwp_id( _lwp_self() ); // Store lwp in case we are bound | |
| 1004 thread->_schedctl = (void *) schedctl_init () ; | |
| 1005 | |
| 1006 if (UseNUMA) { | |
| 1007 int lgrp_id = os::numa_get_group_id(); | |
| 1008 if (lgrp_id != -1) { | |
| 1009 thread->set_lgrp_id(lgrp_id); | |
| 1010 } | |
| 1011 } | |
| 1012 | |
| 1013 // If the creator called set priority before we started, | |
|
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1014 // we need to call set_native_priority now that we have an lwp. |
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1015 // We used to get the priority from thr_getprio (we called |
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1016 // thr_setprio way back in create_thread) and pass it to |
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1017 // set_native_priority, but Solaris scales the priority |
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1018 // in java_to_os_priority, so when we read it back here, |
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1019 // we pass trash to set_native_priority instead of what's |
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1020 // in java_to_os_priority. So we save the native priority |
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1021 // in the osThread and recall it here. |
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1022 |
| 0 | 1023 if ( osthr->thread_id() != -1 ) { |
| 1024 if ( UseThreadPriorities ) { | |
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1025 int prio = osthr->native_priority(); |
| 0 | 1026 if (ThreadPriorityVerbose) { |
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1027 tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " |
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1028 INTPTR_FORMAT ", setting priority: %d\n", |
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1029 osthr->thread_id(), osthr->lwp_id(), prio); |
| 0 | 1030 } |
| 1031 os::set_native_priority(thread, prio); | |
| 1032 } | |
| 1033 } else if (ThreadPriorityVerbose) { | |
| 1034 warning("Can't set priority in _start routine, thread id hasn't been set\n"); | |
| 1035 } | |
| 1036 | |
| 1037 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
| 1038 | |
| 1039 // initialize signal mask for this thread | |
| 1040 os::Solaris::hotspot_sigmask(thread); | |
| 1041 | |
| 1042 thread->run(); | |
| 1043 | |
| 1044 // One less thread is executing | |
| 1045 // When the VMThread gets here, the main thread may have already exited | |
| 1046 // which frees the CodeHeap containing the Atomic::dec code | |
| 1047 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
| 1048 Atomic::dec(&os::Solaris::_os_thread_count); | |
| 1049 } | |
| 1050 | |
| 1051 if (UseDetachedThreads) { | |
| 1052 thr_exit(NULL); | |
| 1053 ShouldNotReachHere(); | |
| 1054 } | |
| 1055 return NULL; | |
| 1056 } | |
| 1057 | |
| 1058 static OSThread* create_os_thread(Thread* thread, thread_t thread_id) { | |
| 1059 // Allocate the OSThread object | |
| 1060 OSThread* osthread = new OSThread(NULL, NULL); | |
| 1061 if (osthread == NULL) return NULL; | |
| 1062 | |
| 1063 // Store info on the Solaris thread into the OSThread | |
| 1064 osthread->set_thread_id(thread_id); | |
| 1065 osthread->set_lwp_id(_lwp_self()); | |
| 1066 thread->_schedctl = (void *) schedctl_init () ; | |
| 1067 | |
| 1068 if (UseNUMA) { | |
| 1069 int lgrp_id = os::numa_get_group_id(); | |
| 1070 if (lgrp_id != -1) { | |
| 1071 thread->set_lgrp_id(lgrp_id); | |
| 1072 } | |
| 1073 } | |
| 1074 | |
| 1075 if ( ThreadPriorityVerbose ) { | |
| 1076 tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n", | |
| 1077 osthread->thread_id(), osthread->lwp_id() ); | |
| 1078 } | |
| 1079 | |
| 1080 // Initial thread state is INITIALIZED, not SUSPENDED | |
| 1081 osthread->set_state(INITIALIZED); | |
| 1082 | |
| 1083 return osthread; | |
| 1084 } | |
| 1085 | |
| 1086 void os::Solaris::hotspot_sigmask(Thread* thread) { | |
| 1087 | |
| 1088 //Save caller's signal mask | |
| 1089 sigset_t sigmask; | |
| 1090 thr_sigsetmask(SIG_SETMASK, NULL, &sigmask); | |
| 1091 OSThread *osthread = thread->osthread(); | |
| 1092 osthread->set_caller_sigmask(sigmask); | |
| 1093 | |
| 1094 thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL); | |
| 1095 if (!ReduceSignalUsage) { | |
| 1096 if (thread->is_VM_thread()) { | |
| 1097 // Only the VM thread handles BREAK_SIGNAL ... | |
| 1098 thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL); | |
| 1099 } else { | |
| 1100 // ... all other threads block BREAK_SIGNAL | |
| 1101 assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked"); | |
| 1102 thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL); | |
| 1103 } | |
| 1104 } | |
| 1105 } | |
| 1106 | |
| 1107 bool os::create_attached_thread(JavaThread* thread) { | |
| 1108 #ifdef ASSERT | |
| 1109 thread->verify_not_published(); | |
| 1110 #endif | |
| 1111 OSThread* osthread = create_os_thread(thread, thr_self()); | |
| 1112 if (osthread == NULL) { | |
| 1113 return false; | |
| 1114 } | |
| 1115 | |
| 1116 // Initial thread state is RUNNABLE | |
| 1117 osthread->set_state(RUNNABLE); | |
| 1118 thread->set_osthread(osthread); | |
| 1119 | |
| 1120 // initialize signal mask for this thread | |
| 1121 // and save the caller's signal mask | |
| 1122 os::Solaris::hotspot_sigmask(thread); | |
| 1123 | |
| 1124 return true; | |
| 1125 } | |
| 1126 | |
| 1127 bool os::create_main_thread(JavaThread* thread) { | |
| 1128 #ifdef ASSERT | |
| 1129 thread->verify_not_published(); | |
| 1130 #endif | |
| 1131 if (_starting_thread == NULL) { | |
| 1132 _starting_thread = create_os_thread(thread, main_thread); | |
| 1133 if (_starting_thread == NULL) { | |
| 1134 return false; | |
| 1135 } | |
| 1136 } | |
| 1137 | |
| 1138 // The primodial thread is runnable from the start | |
| 1139 _starting_thread->set_state(RUNNABLE); | |
| 1140 | |
| 1141 thread->set_osthread(_starting_thread); | |
| 1142 | |
| 1143 // initialize signal mask for this thread | |
| 1144 // and save the caller's signal mask | |
| 1145 os::Solaris::hotspot_sigmask(thread); | |
| 1146 | |
| 1147 return true; | |
| 1148 } | |
| 1149 | |
| 1150 // _T2_libthread is true if we believe we are running with the newer | |
| 1151 // SunSoft lwp/libthread.so (2.8 patch, 2.9 default) | |
| 1152 bool os::Solaris::_T2_libthread = false; | |
| 1153 | |
| 1154 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
| 1155 // Allocate the OSThread object | |
| 1156 OSThread* osthread = new OSThread(NULL, NULL); | |
| 1157 if (osthread == NULL) { | |
| 1158 return false; | |
| 1159 } | |
| 1160 | |
| 1161 if ( ThreadPriorityVerbose ) { | |
| 1162 char *thrtyp; | |
| 1163 switch ( thr_type ) { | |
| 1164 case vm_thread: | |
| 1165 thrtyp = (char *)"vm"; | |
| 1166 break; | |
| 1167 case cgc_thread: | |
| 1168 thrtyp = (char *)"cgc"; | |
| 1169 break; | |
| 1170 case pgc_thread: | |
| 1171 thrtyp = (char *)"pgc"; | |
| 1172 break; | |
| 1173 case java_thread: | |
| 1174 thrtyp = (char *)"java"; | |
| 1175 break; | |
| 1176 case compiler_thread: | |
| 1177 thrtyp = (char *)"compiler"; | |
| 1178 break; | |
| 1179 case watcher_thread: | |
| 1180 thrtyp = (char *)"watcher"; | |
| 1181 break; | |
| 1182 default: | |
| 1183 thrtyp = (char *)"unknown"; | |
| 1184 break; | |
| 1185 } | |
| 1186 tty->print_cr("In create_thread, creating a %s thread\n", thrtyp); | |
| 1187 } | |
| 1188 | |
| 1189 // Calculate stack size if it's not specified by caller. | |
| 1190 if (stack_size == 0) { | |
| 1191 // The default stack size 1M (2M for LP64). | |
| 1192 stack_size = (BytesPerWord >> 2) * K * K; | |
| 1193 | |
| 1194 switch (thr_type) { | |
| 1195 case os::java_thread: | |
| 1196 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
| 1197 if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create(); | |
| 1198 break; | |
| 1199 case os::compiler_thread: | |
| 1200 if (CompilerThreadStackSize > 0) { | |
| 1201 stack_size = (size_t)(CompilerThreadStackSize * K); | |
| 1202 break; | |
| 1203 } // else fall through: | |
| 1204 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
| 1205 case os::vm_thread: | |
| 1206 case os::pgc_thread: | |
| 1207 case os::cgc_thread: | |
| 1208 case os::watcher_thread: | |
| 1209 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
| 1210 break; | |
| 1211 } | |
| 1212 } | |
| 1213 stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed); | |
| 1214 | |
| 1215 // Initial state is ALLOCATED but not INITIALIZED | |
| 1216 osthread->set_state(ALLOCATED); | |
| 1217 | |
| 1218 if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) { | |
| 1219 // We got lots of threads. Check if we still have some address space left. | |
| 1220 // Need to be at least 5Mb of unreserved address space. We do check by | |
| 1221 // trying to reserve some. | |
| 1222 const size_t VirtualMemoryBangSize = 20*K*K; | |
| 1223 char* mem = os::reserve_memory(VirtualMemoryBangSize); | |
| 1224 if (mem == NULL) { | |
| 1225 delete osthread; | |
| 1226 return false; | |
| 1227 } else { | |
| 1228 // Release the memory again | |
| 1229 os::release_memory(mem, VirtualMemoryBangSize); | |
| 1230 } | |
| 1231 } | |
| 1232 | |
| 1233 // Setup osthread because the child thread may need it. | |
| 1234 thread->set_osthread(osthread); | |
| 1235 | |
| 1236 // Create the Solaris thread | |
| 1237 // explicit THR_BOUND for T2_libthread case in case | |
| 1238 // that assumption is not accurate, but our alternate signal stack | |
| 1239 // handling is based on it which must have bound threads | |
| 1240 thread_t tid = 0; | |
| 1241 long flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED | |
| 1242 | ((UseBoundThreads || os::Solaris::T2_libthread() || | |
| 1243 (thr_type == vm_thread) || | |
| 1244 (thr_type == cgc_thread) || | |
| 1245 (thr_type == pgc_thread) || | |
| 1246 (thr_type == compiler_thread && BackgroundCompilation)) ? | |
| 1247 THR_BOUND : 0); | |
| 1248 int status; | |
| 1249 | |
| 1250 // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs. | |
| 1251 // | |
| 1252 // On multiprocessors systems, libthread sometimes under-provisions our | |
| 1253 // process with LWPs. On a 30-way systems, for instance, we could have | |
| 1254 // 50 user-level threads in ready state and only 2 or 3 LWPs assigned | |
| 1255 // to our process. This can result in under utilization of PEs. | |
| 1256 // I suspect the problem is related to libthread's LWP | |
| 1257 // pool management and to the kernel's SIGBLOCKING "last LWP parked" | |
| 1258 // upcall policy. | |
| 1259 // | |
| 1260 // The following code is palliative -- it attempts to ensure that our | |
| 1261 // process has sufficient LWPs to take advantage of multiple PEs. | |
| 1262 // Proper long-term cures include using user-level threads bound to LWPs | |
| 1263 // (THR_BOUND) or using LWP-based synchronization. Note that there is a | |
| 1264 // slight timing window with respect to sampling _os_thread_count, but | |
| 1265 // the race is benign. Also, we should periodically recompute | |
| 1266 // _processors_online as the min of SC_NPROCESSORS_ONLN and the | |
| 1267 // the number of PEs in our partition. You might be tempted to use | |
| 1268 // THR_NEW_LWP here, but I'd recommend against it as that could | |
| 1269 // result in undesirable growth of the libthread's LWP pool. | |
| 1270 // The fix below isn't sufficient; for instance, it doesn't take into count | |
| 1271 // LWPs parked on IO. It does, however, help certain CPU-bound benchmarks. | |
| 1272 // | |
| 1273 // Some pathologies this scheme doesn't handle: | |
| 1274 // * Threads can block, releasing the LWPs. The LWPs can age out. | |
| 1275 // When a large number of threads become ready again there aren't | |
| 1276 // enough LWPs available to service them. This can occur when the | |
| 1277 // number of ready threads oscillates. | |
| 1278 // * LWPs/Threads park on IO, thus taking the LWP out of circulation. | |
| 1279 // | |
| 1280 // Finally, we should call thr_setconcurrency() periodically to refresh | |
| 1281 // the LWP pool and thwart the LWP age-out mechanism. | |
| 1282 // The "+3" term provides a little slop -- we want to slightly overprovision. | |
| 1283 | |
| 1284 if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) { | |
| 1285 if (!(flags & THR_BOUND)) { | |
| 1286 thr_setconcurrency (os::Solaris::_os_thread_count); // avoid starvation | |
| 1287 } | |
| 1288 } | |
| 1289 // Although this doesn't hurt, we should warn of undefined behavior | |
| 1290 // when using unbound T1 threads with schedctl(). This should never | |
| 1291 // happen, as the compiler and VM threads are always created bound | |
| 1292 DEBUG_ONLY( | |
| 1293 if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) && | |
| 1294 (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) && | |
| 1295 ((thr_type == vm_thread) || (thr_type == cgc_thread) || | |
| 1296 (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) { | |
| 1297 warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound"); | |
| 1298 } | |
| 1299 ); | |
| 1300 | |
| 1301 | |
| 1302 // Mark that we don't have an lwp or thread id yet. | |
| 1303 // In case we attempt to set the priority before the thread starts. | |
| 1304 osthread->set_lwp_id(-1); | |
| 1305 osthread->set_thread_id(-1); | |
| 1306 | |
| 1307 status = thr_create(NULL, stack_size, java_start, thread, flags, &tid); | |
| 1308 if (status != 0) { | |
| 1309 if (PrintMiscellaneous && (Verbose || WizardMode)) { | |
| 1310 perror("os::create_thread"); | |
| 1311 } | |
| 1312 thread->set_osthread(NULL); | |
| 1313 // Need to clean up stuff we've allocated so far | |
| 1314 delete osthread; | |
| 1315 return false; | |
| 1316 } | |
| 1317 | |
| 1318 Atomic::inc(&os::Solaris::_os_thread_count); | |
| 1319 | |
| 1320 // Store info on the Solaris thread into the OSThread | |
| 1321 osthread->set_thread_id(tid); | |
| 1322 | |
| 1323 // Remember that we created this thread so we can set priority on it | |
| 1324 osthread->set_vm_created(); | |
| 1325 | |
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1326 // Set the default thread priority. If using bound threads, setting |
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1327 // lwp priority will be delayed until thread start. |
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1328 set_native_priority(thread, |
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1329 DefaultThreadPriority == -1 ? |
| 0 | 1330 java_to_os_priority[NormPriority] : |
| 1331 DefaultThreadPriority); | |
| 1332 | |
| 1333 // Initial thread state is INITIALIZED, not SUSPENDED | |
| 1334 osthread->set_state(INITIALIZED); | |
| 1335 | |
| 1336 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
| 1337 return true; | |
| 1338 } | |
| 1339 | |
| 1340 /* defined for >= Solaris 10. This allows builds on earlier versions | |
| 1341 * of Solaris to take advantage of the newly reserved Solaris JVM signals | |
| 1342 * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2 | |
| 1343 * and -XX:+UseAltSigs does nothing since these should have no conflict | |
| 1344 */ | |
| 1345 #if !defined(SIGJVM1) | |
| 1346 #define SIGJVM1 39 | |
| 1347 #define SIGJVM2 40 | |
| 1348 #endif | |
| 1349 | |
| 1350 debug_only(static bool signal_sets_initialized = false); | |
| 1351 static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; | |
| 1352 int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL; | |
| 1353 int os::Solaris::_SIGasync = ASYNC_SIGNAL; | |
| 1354 | |
| 1355 bool os::Solaris::is_sig_ignored(int sig) { | |
| 1356 struct sigaction oact; | |
| 1357 sigaction(sig, (struct sigaction*)NULL, &oact); | |
| 1358 void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) | |
| 1359 : CAST_FROM_FN_PTR(void*, oact.sa_handler); | |
| 1360 if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) | |
| 1361 return true; | |
| 1362 else | |
| 1363 return false; | |
| 1364 } | |
| 1365 | |
| 1366 // Note: SIGRTMIN is a macro that calls sysconf() so it will | |
| 1367 // dynamically detect SIGRTMIN value for the system at runtime, not buildtime | |
| 1368 static bool isJVM1available() { | |
| 1369 return SIGJVM1 < SIGRTMIN; | |
| 1370 } | |
| 1371 | |
| 1372 void os::Solaris::signal_sets_init() { | |
| 1373 // Should also have an assertion stating we are still single-threaded. | |
| 1374 assert(!signal_sets_initialized, "Already initialized"); | |
| 1375 // Fill in signals that are necessarily unblocked for all threads in | |
| 1376 // the VM. Currently, we unblock the following signals: | |
| 1377 // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden | |
| 1378 // by -Xrs (=ReduceSignalUsage)); | |
| 1379 // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all | |
| 1380 // other threads. The "ReduceSignalUsage" boolean tells us not to alter | |
| 1381 // the dispositions or masks wrt these signals. | |
| 1382 // Programs embedding the VM that want to use the above signals for their | |
| 1383 // own purposes must, at this time, use the "-Xrs" option to prevent | |
| 1384 // interference with shutdown hooks and BREAK_SIGNAL thread dumping. | |
| 1385 // (See bug 4345157, and other related bugs). | |
| 1386 // In reality, though, unblocking these signals is really a nop, since | |
| 1387 // these signals are not blocked by default. | |
| 1388 sigemptyset(&unblocked_sigs); | |
| 1389 sigemptyset(&allowdebug_blocked_sigs); | |
| 1390 sigaddset(&unblocked_sigs, SIGILL); | |
| 1391 sigaddset(&unblocked_sigs, SIGSEGV); | |
| 1392 sigaddset(&unblocked_sigs, SIGBUS); | |
| 1393 sigaddset(&unblocked_sigs, SIGFPE); | |
| 1394 | |
| 1395 if (isJVM1available) { | |
| 1396 os::Solaris::set_SIGinterrupt(SIGJVM1); | |
| 1397 os::Solaris::set_SIGasync(SIGJVM2); | |
| 1398 } else if (UseAltSigs) { | |
| 1399 os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL); | |
| 1400 os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL); | |
| 1401 } else { | |
| 1402 os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL); | |
| 1403 os::Solaris::set_SIGasync(ASYNC_SIGNAL); | |
| 1404 } | |
| 1405 | |
| 1406 sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt()); | |
| 1407 sigaddset(&unblocked_sigs, os::Solaris::SIGasync()); | |
| 1408 | |
| 1409 if (!ReduceSignalUsage) { | |
| 1410 if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) { | |
| 1411 sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); | |
| 1412 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL); | |
| 1413 } | |
| 1414 if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) { | |
| 1415 sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); | |
| 1416 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL); | |
| 1417 } | |
| 1418 if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) { | |
| 1419 sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); | |
| 1420 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL); | |
| 1421 } | |
| 1422 } | |
| 1423 // Fill in signals that are blocked by all but the VM thread. | |
| 1424 sigemptyset(&vm_sigs); | |
| 1425 if (!ReduceSignalUsage) | |
| 1426 sigaddset(&vm_sigs, BREAK_SIGNAL); | |
| 1427 debug_only(signal_sets_initialized = true); | |
| 1428 | |
| 1429 // For diagnostics only used in run_periodic_checks | |
| 1430 sigemptyset(&check_signal_done); | |
| 1431 } | |
| 1432 | |
| 1433 // These are signals that are unblocked while a thread is running Java. | |
| 1434 // (For some reason, they get blocked by default.) | |
| 1435 sigset_t* os::Solaris::unblocked_signals() { | |
| 1436 assert(signal_sets_initialized, "Not initialized"); | |
| 1437 return &unblocked_sigs; | |
| 1438 } | |
| 1439 | |
| 1440 // These are the signals that are blocked while a (non-VM) thread is | |
| 1441 // running Java. Only the VM thread handles these signals. | |
| 1442 sigset_t* os::Solaris::vm_signals() { | |
| 1443 assert(signal_sets_initialized, "Not initialized"); | |
| 1444 return &vm_sigs; | |
| 1445 } | |
| 1446 | |
| 1447 // These are signals that are blocked during cond_wait to allow debugger in | |
| 1448 sigset_t* os::Solaris::allowdebug_blocked_signals() { | |
| 1449 assert(signal_sets_initialized, "Not initialized"); | |
| 1450 return &allowdebug_blocked_sigs; | |
| 1451 } | |
| 1452 | |
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1453 |
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1454 void _handle_uncaught_cxx_exception() { |
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1455 VMError err("An uncaught C++ exception"); |
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1456 err.report_and_die(); |
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1457 } |
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1458 |
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1459 |
| 0 | 1460 // First crack at OS-specific initialization, from inside the new thread. |
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1461 void os::initialize_thread(Thread* thr) { |
| 0 | 1462 int r = thr_main() ; |
| 1463 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
| 1464 if (r) { | |
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1465 JavaThread* jt = (JavaThread *)thr; |
| 0 | 1466 assert(jt != NULL,"Sanity check"); |
| 1467 size_t stack_size; | |
| 1468 address base = jt->stack_base(); | |
| 1469 if (Arguments::created_by_java_launcher()) { | |
| 1470 // Use 2MB to allow for Solaris 7 64 bit mode. | |
| 1471 stack_size = JavaThread::stack_size_at_create() == 0 | |
| 1472 ? 2048*K : JavaThread::stack_size_at_create(); | |
| 1473 | |
| 1474 // There are rare cases when we may have already used more than | |
| 1475 // the basic stack size allotment before this method is invoked. | |
| 1476 // Attempt to allow for a normally sized java_stack. | |
| 1477 size_t current_stack_offset = (size_t)(base - (address)&stack_size); | |
| 1478 stack_size += ReservedSpace::page_align_size_down(current_stack_offset); | |
| 1479 } else { | |
| 1480 // 6269555: If we were not created by a Java launcher, i.e. if we are | |
| 1481 // running embedded in a native application, treat the primordial thread | |
| 1482 // as much like a native attached thread as possible. This means using | |
| 1483 // the current stack size from thr_stksegment(), unless it is too large | |
| 1484 // to reliably setup guard pages. A reasonable max size is 8MB. | |
| 1485 size_t current_size = current_stack_size(); | |
| 1486 // This should never happen, but just in case.... | |
| 1487 if (current_size == 0) current_size = 2 * K * K; | |
| 1488 stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size; | |
| 1489 } | |
| 1490 address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());; | |
| 1491 stack_size = (size_t)(base - bottom); | |
| 1492 | |
| 1493 assert(stack_size > 0, "Stack size calculation problem"); | |
| 1494 | |
| 1495 if (stack_size > jt->stack_size()) { | |
| 1496 NOT_PRODUCT( | |
| 1497 struct rlimit limits; | |
| 1498 getrlimit(RLIMIT_STACK, &limits); | |
| 1499 size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur); | |
| 1500 assert(size >= jt->stack_size(), "Stack size problem in main thread"); | |
| 1501 ) | |
| 1502 tty->print_cr( | |
| 1503 "Stack size of %d Kb exceeds current limit of %d Kb.\n" | |
| 1504 "(Stack sizes are rounded up to a multiple of the system page size.)\n" | |
| 1505 "See limit(1) to increase the stack size limit.", | |
| 1506 stack_size / K, jt->stack_size() / K); | |
| 1507 vm_exit(1); | |
| 1508 } | |
| 1509 assert(jt->stack_size() >= stack_size, | |
| 1510 "Attempt to map more stack than was allocated"); | |
| 1511 jt->set_stack_size(stack_size); | |
| 1512 } | |
| 1513 | |
| 1514 // 5/22/01: Right now alternate signal stacks do not handle | |
| 1515 // throwing stack overflow exceptions, see bug 4463178 | |
| 1516 // Until a fix is found for this, T2 will NOT imply alternate signal | |
| 1517 // stacks. | |
| 1518 // If using T2 libthread threads, install an alternate signal stack. | |
| 1519 // Because alternate stacks associate with LWPs on Solaris, | |
| 1520 // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads | |
| 1521 // we prefer to explicitly stack bang. | |
| 1522 // If not using T2 libthread, but using UseBoundThreads any threads | |
| 1523 // (primordial thread, jni_attachCurrentThread) we do not create, | |
| 1524 // probably are not bound, therefore they can not have an alternate | |
| 1525 // signal stack. Since our stack banging code is generated and | |
| 1526 // is shared across threads, all threads must be bound to allow | |
| 1527 // using alternate signal stacks. The alternative is to interpose | |
| 1528 // on _lwp_create to associate an alt sig stack with each LWP, | |
| 1529 // and this could be a problem when the JVM is embedded. | |
| 1530 // We would prefer to use alternate signal stacks with T2 | |
| 1531 // Since there is currently no accurate way to detect T2 | |
| 1532 // we do not. Assuming T2 when running T1 causes sig 11s or assertions | |
| 1533 // on installing alternate signal stacks | |
| 1534 | |
| 1535 | |
| 1536 // 05/09/03: removed alternate signal stack support for Solaris | |
| 1537 // The alternate signal stack mechanism is no longer needed to | |
| 1538 // handle stack overflow. This is now handled by allocating | |
| 1539 // guard pages (red zone) and stackbanging. | |
| 1540 // Initially the alternate signal stack mechanism was removed because | |
| 1541 // it did not work with T1 llibthread. Alternate | |
| 1542 // signal stacks MUST have all threads bound to lwps. Applications | |
| 1543 // can create their own threads and attach them without their being | |
| 1544 // bound under T1. This is frequently the case for the primordial thread. | |
| 1545 // If we were ever to reenable this mechanism we would need to | |
| 1546 // use the dynamic check for T2 libthread. | |
| 1547 | |
| 1548 os::Solaris::init_thread_fpu_state(); | |
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1549 std::set_terminate(_handle_uncaught_cxx_exception); |
| 0 | 1550 } |
| 1551 | |
| 1552 | |
| 1553 | |
| 1554 // Free Solaris resources related to the OSThread | |
| 1555 void os::free_thread(OSThread* osthread) { | |
| 1556 assert(osthread != NULL, "os::free_thread but osthread not set"); | |
| 1557 | |
| 1558 | |
| 1559 // We are told to free resources of the argument thread, | |
| 1560 // but we can only really operate on the current thread. | |
| 1561 // The main thread must take the VMThread down synchronously | |
| 1562 // before the main thread exits and frees up CodeHeap | |
| 1563 guarantee((Thread::current()->osthread() == osthread | |
| 1564 || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread"); | |
| 1565 if (Thread::current()->osthread() == osthread) { | |
| 1566 // Restore caller's signal mask | |
| 1567 sigset_t sigmask = osthread->caller_sigmask(); | |
| 1568 thr_sigsetmask(SIG_SETMASK, &sigmask, NULL); | |
| 1569 } | |
| 1570 delete osthread; | |
| 1571 } | |
| 1572 | |
| 1573 void os::pd_start_thread(Thread* thread) { | |
| 1574 int status = thr_continue(thread->osthread()->thread_id()); | |
| 1575 assert_status(status == 0, status, "thr_continue failed"); | |
| 1576 } | |
| 1577 | |
| 1578 | |
| 1579 intx os::current_thread_id() { | |
| 1580 return (intx)thr_self(); | |
| 1581 } | |
| 1582 | |
| 1583 static pid_t _initial_pid = 0; | |
| 1584 | |
| 1585 int os::current_process_id() { | |
| 1586 return (int)(_initial_pid ? _initial_pid : getpid()); | |
| 1587 } | |
| 1588 | |
| 1589 int os::allocate_thread_local_storage() { | |
| 1590 // %%% in Win32 this allocates a memory segment pointed to by a | |
| 1591 // register. Dan Stein can implement a similar feature in | |
| 1592 // Solaris. Alternatively, the VM can do the same thing | |
| 1593 // explicitly: malloc some storage and keep the pointer in a | |
| 1594 // register (which is part of the thread's context) (or keep it | |
| 1595 // in TLS). | |
| 1596 // %%% In current versions of Solaris, thr_self and TSD can | |
| 1597 // be accessed via short sequences of displaced indirections. | |
| 1598 // The value of thr_self is available as %g7(36). | |
| 1599 // The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4), | |
| 1600 // assuming that the current thread already has a value bound to k. | |
| 1601 // It may be worth experimenting with such access patterns, | |
| 1602 // and later having the parameters formally exported from a Solaris | |
| 1603 // interface. I think, however, that it will be faster to | |
| 1604 // maintain the invariant that %g2 always contains the | |
| 1605 // JavaThread in Java code, and have stubs simply | |
| 1606 // treat %g2 as a caller-save register, preserving it in a %lN. | |
| 1607 thread_key_t tk; | |
| 1608 if (thr_keycreate( &tk, NULL ) ) | |
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1609 fatal(err_msg("os::allocate_thread_local_storage: thr_keycreate failed " |
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1610 "(%s)", strerror(errno))); |
| 0 | 1611 return int(tk); |
| 1612 } | |
| 1613 | |
| 1614 void os::free_thread_local_storage(int index) { | |
| 1615 // %%% don't think we need anything here | |
| 1616 // if ( pthread_key_delete((pthread_key_t) tk) ) | |
| 1617 // fatal("os::free_thread_local_storage: pthread_key_delete failed"); | |
| 1618 } | |
| 1619 | |
| 1620 #define SMALLINT 32 // libthread allocate for tsd_common is a version specific | |
| 1621 // small number - point is NO swap space available | |
| 1622 void os::thread_local_storage_at_put(int index, void* value) { | |
| 1623 // %%% this is used only in threadLocalStorage.cpp | |
| 1624 if (thr_setspecific((thread_key_t)index, value)) { | |
| 1625 if (errno == ENOMEM) { | |
| 1626 vm_exit_out_of_memory(SMALLINT, "thr_setspecific: out of swap space"); | |
| 1627 } else { | |
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1628 fatal(err_msg("os::thread_local_storage_at_put: thr_setspecific failed " |
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1629 "(%s)", strerror(errno))); |
| 0 | 1630 } |
| 1631 } else { | |
| 1632 ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ; | |
| 1633 } | |
| 1634 } | |
| 1635 | |
| 1636 // This function could be called before TLS is initialized, for example, when | |
| 1637 // VM receives an async signal or when VM causes a fatal error during | |
| 1638 // initialization. Return NULL if thr_getspecific() fails. | |
| 1639 void* os::thread_local_storage_at(int index) { | |
| 1640 // %%% this is used only in threadLocalStorage.cpp | |
| 1641 void* r = NULL; | |
| 1642 return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r; | |
| 1643 } | |
| 1644 | |
| 1645 | |
| 1646 // gethrtime can move backwards if read from one cpu and then a different cpu | |
| 1647 // getTimeNanos is guaranteed to not move backward on Solaris | |
| 1648 // local spinloop created as faster for a CAS on an int than | |
| 1649 // a CAS on a 64bit jlong. Also Atomic::cmpxchg for jlong is not | |
| 1650 // supported on sparc v8 or pre supports_cx8 intel boxes. | |
| 1651 // oldgetTimeNanos for systems which do not support CAS on 64bit jlong | |
| 1652 // i.e. sparc v8 and pre supports_cx8 (i486) intel boxes | |
| 1653 inline hrtime_t oldgetTimeNanos() { | |
| 1654 int gotlock = LOCK_INVALID; | |
| 1655 hrtime_t newtime = gethrtime(); | |
| 1656 | |
| 1657 for (;;) { | |
| 1658 // grab lock for max_hrtime | |
| 1659 int curlock = max_hrtime_lock; | |
| 1660 if (curlock & LOCK_BUSY) continue; | |
| 1661 if (gotlock = Atomic::cmpxchg(LOCK_BUSY, &max_hrtime_lock, LOCK_FREE) != LOCK_FREE) continue; | |
| 1662 if (newtime > max_hrtime) { | |
| 1663 max_hrtime = newtime; | |
| 1664 } else { | |
| 1665 newtime = max_hrtime; | |
| 1666 } | |
| 1667 // release lock | |
| 1668 max_hrtime_lock = LOCK_FREE; | |
| 1669 return newtime; | |
| 1670 } | |
| 1671 } | |
| 1672 // gethrtime can move backwards if read from one cpu and then a different cpu | |
| 1673 // getTimeNanos is guaranteed to not move backward on Solaris | |
| 1674 inline hrtime_t getTimeNanos() { | |
| 1675 if (VM_Version::supports_cx8()) { | |
| 499 | 1676 const hrtime_t now = gethrtime(); |
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1677 // Use atomic long load since 32-bit x86 uses 2 registers to keep long. |
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1678 const hrtime_t prev = Atomic::load((volatile jlong*)&max_hrtime); |
| 499 | 1679 if (now <= prev) return prev; // same or retrograde time; |
| 1680 const hrtime_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&max_hrtime, prev); | |
| 1681 assert(obsv >= prev, "invariant"); // Monotonicity | |
| 1682 // If the CAS succeeded then we're done and return "now". | |
| 1683 // If the CAS failed and the observed value "obs" is >= now then | |
| 1684 // we should return "obs". If the CAS failed and now > obs > prv then | |
| 1685 // some other thread raced this thread and installed a new value, in which case | |
| 1686 // we could either (a) retry the entire operation, (b) retry trying to install now | |
| 1687 // or (c) just return obs. We use (c). No loop is required although in some cases | |
| 1688 // we might discard a higher "now" value in deference to a slightly lower but freshly | |
| 1689 // installed obs value. That's entirely benign -- it admits no new orderings compared | |
| 1690 // to (a) or (b) -- and greatly reduces coherence traffic. | |
| 1691 // We might also condition (c) on the magnitude of the delta between obs and now. | |
| 1692 // Avoiding excessive CAS operations to hot RW locations is critical. | |
| 1693 // See http://blogs.sun.com/dave/entry/cas_and_cache_trivia_invalidate | |
| 1694 return (prev == obsv) ? now : obsv ; | |
| 0 | 1695 } else { |
| 1696 return oldgetTimeNanos(); | |
| 1697 } | |
| 1698 } | |
| 1699 | |
| 1700 // Time since start-up in seconds to a fine granularity. | |
| 1701 // Used by VMSelfDestructTimer and the MemProfiler. | |
| 1702 double os::elapsedTime() { | |
| 1703 return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz; | |
| 1704 } | |
| 1705 | |
| 1706 jlong os::elapsed_counter() { | |
| 1707 return (jlong)(getTimeNanos() - first_hrtime); | |
| 1708 } | |
| 1709 | |
| 1710 jlong os::elapsed_frequency() { | |
| 1711 return hrtime_hz; | |
| 1712 } | |
| 1713 | |
| 1714 // Return the real, user, and system times in seconds from an | |
| 1715 // arbitrary fixed point in the past. | |
| 1716 bool os::getTimesSecs(double* process_real_time, | |
| 1717 double* process_user_time, | |
| 1718 double* process_system_time) { | |
| 1719 struct tms ticks; | |
| 1720 clock_t real_ticks = times(&ticks); | |
| 1721 | |
| 1722 if (real_ticks == (clock_t) (-1)) { | |
| 1723 return false; | |
| 1724 } else { | |
| 1725 double ticks_per_second = (double) clock_tics_per_sec; | |
| 1726 *process_user_time = ((double) ticks.tms_utime) / ticks_per_second; | |
| 1727 *process_system_time = ((double) ticks.tms_stime) / ticks_per_second; | |
| 1728 // For consistency return the real time from getTimeNanos() | |
| 1729 // converted to seconds. | |
| 1730 *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS); | |
| 1731 | |
| 1732 return true; | |
| 1733 } | |
| 1734 } | |
| 1735 | |
|
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1736 bool os::supports_vtime() { return true; } |
|
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1737 |
|
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|
1738 bool os::enable_vtime() { |
|
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1739 int fd = ::open("/proc/self/ctl", O_WRONLY); |
|
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1740 if (fd == -1) |
|
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1741 return false; |
|
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|
1742 |
|
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1743 long cmd[] = { PCSET, PR_MSACCT }; |
|
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1744 int res = ::write(fd, cmd, sizeof(long) * 2); |
|
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1745 ::close(fd); |
|
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1746 if (res != sizeof(long) * 2) |
|
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|
1747 return false; |
|
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|
1748 |
|
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1749 return true; |
|
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|
1750 } |
|
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|
1751 |
|
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|
1752 bool os::vtime_enabled() { |
|
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1753 int fd = ::open("/proc/self/status", O_RDONLY); |
|
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1754 if (fd == -1) |
|
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1755 return false; |
|
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|
1756 |
|
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|
1757 pstatus_t status; |
|
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|
1758 int res = os::read(fd, (void*) &status, sizeof(pstatus_t)); |
|
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1759 ::close(fd); |
|
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1760 if (res != sizeof(pstatus_t)) |
|
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|
1761 return false; |
|
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|
1762 |
|
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1763 return status.pr_flags & PR_MSACCT; |
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|
1764 } |
|
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|
1765 |
|
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|
1766 double os::elapsedVTime() { |
|
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|
1767 return (double)gethrvtime() / (double)hrtime_hz; |
|
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1768 } |
|
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|
1769 |
| 0 | 1770 // Used internally for comparisons only |
| 1771 // getTimeMillis guaranteed to not move backwards on Solaris | |
| 1772 jlong getTimeMillis() { | |
| 1773 jlong nanotime = getTimeNanos(); | |
|
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1774 return (jlong)(nanotime / NANOSECS_PER_MILLISEC); |
| 0 | 1775 } |
| 1776 | |
| 61 | 1777 // Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis |
| 1778 jlong os::javaTimeMillis() { | |
| 0 | 1779 timeval t; |
| 1780 if (gettimeofday( &t, NULL) == -1) | |
|
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|
1781 fatal(err_msg("os::javaTimeMillis: gettimeofday (%s)", strerror(errno))); |
| 0 | 1782 return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000; |
| 1783 } | |
| 1784 | |
| 1785 jlong os::javaTimeNanos() { | |
| 1786 return (jlong)getTimeNanos(); | |
| 1787 } | |
| 1788 | |
| 1789 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
| 1790 info_ptr->max_value = ALL_64_BITS; // gethrtime() uses all 64 bits | |
| 1791 info_ptr->may_skip_backward = false; // not subject to resetting or drifting | |
| 1792 info_ptr->may_skip_forward = false; // not subject to resetting or drifting | |
| 1793 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
| 1794 } | |
| 1795 | |
| 1796 char * os::local_time_string(char *buf, size_t buflen) { | |
| 1797 struct tm t; | |
| 1798 time_t long_time; | |
| 1799 time(&long_time); | |
| 1800 localtime_r(&long_time, &t); | |
| 1801 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
| 1802 t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, | |
| 1803 t.tm_hour, t.tm_min, t.tm_sec); | |
| 1804 return buf; | |
| 1805 } | |
| 1806 | |
| 1807 // Note: os::shutdown() might be called very early during initialization, or | |
| 1808 // called from signal handler. Before adding something to os::shutdown(), make | |
| 1809 // sure it is async-safe and can handle partially initialized VM. | |
| 1810 void os::shutdown() { | |
| 1811 | |
| 1812 // allow PerfMemory to attempt cleanup of any persistent resources | |
| 1813 perfMemory_exit(); | |
| 1814 | |
| 1815 // needs to remove object in file system | |
| 1816 AttachListener::abort(); | |
| 1817 | |
| 1818 // flush buffered output, finish log files | |
| 1819 ostream_abort(); | |
| 1820 | |
| 1821 // Check for abort hook | |
| 1822 abort_hook_t abort_hook = Arguments::abort_hook(); | |
| 1823 if (abort_hook != NULL) { | |
| 1824 abort_hook(); | |
| 1825 } | |
| 1826 } | |
| 1827 | |
| 1828 // Note: os::abort() might be called very early during initialization, or | |
| 1829 // called from signal handler. Before adding something to os::abort(), make | |
| 1830 // sure it is async-safe and can handle partially initialized VM. | |
| 1831 void os::abort(bool dump_core) { | |
| 1832 os::shutdown(); | |
| 1833 if (dump_core) { | |
| 1834 #ifndef PRODUCT | |
| 1835 fdStream out(defaultStream::output_fd()); | |
| 1836 out.print_raw("Current thread is "); | |
| 1837 char buf[16]; | |
| 1838 jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); | |
| 1839 out.print_raw_cr(buf); | |
| 1840 out.print_raw_cr("Dumping core ..."); | |
| 1841 #endif | |
| 1842 ::abort(); // dump core (for debugging) | |
| 1843 } | |
| 1844 | |
| 1845 ::exit(1); | |
| 1846 } | |
| 1847 | |
| 1848 // Die immediately, no exit hook, no abort hook, no cleanup. | |
| 1849 void os::die() { | |
|
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1850 ::abort(); // dump core (for debugging) |
| 0 | 1851 } |
| 1852 | |
| 1853 // unused | |
| 1854 void os::set_error_file(const char *logfile) {} | |
| 1855 | |
| 1856 // DLL functions | |
| 1857 | |
| 1858 const char* os::dll_file_extension() { return ".so"; } | |
| 1859 | |
|
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1860 // This must be hard coded because it's the system's temporary |
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1861 // directory not the java application's temp directory, ala java.io.tmpdir. |
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1862 const char* os::get_temp_directory() { return "/tmp"; } |
| 0 | 1863 |
| 691 | 1864 static bool file_exists(const char* filename) { |
| 1865 struct stat statbuf; | |
| 1866 if (filename == NULL || strlen(filename) == 0) { | |
| 1867 return false; | |
| 1868 } | |
| 1869 return os::stat(filename, &statbuf) == 0; | |
| 1870 } | |
| 1871 | |
|
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|
1872 bool os::dll_build_name(char* buffer, size_t buflen, |
| 691 | 1873 const char* pname, const char* fname) { |
|
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1874 bool retval = false; |
| 242 | 1875 const size_t pnamelen = pname ? strlen(pname) : 0; |
| 1876 | |
|
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1877 // Return error on buffer overflow. |
| 242 | 1878 if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { |
|
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1879 return retval; |
| 242 | 1880 } |
| 1881 | |
| 1882 if (pnamelen == 0) { | |
| 691 | 1883 snprintf(buffer, buflen, "lib%s.so", fname); |
|
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|
1884 retval = true; |
| 691 | 1885 } else if (strchr(pname, *os::path_separator()) != NULL) { |
| 1886 int n; | |
| 1887 char** pelements = split_path(pname, &n); | |
| 1888 for (int i = 0 ; i < n ; i++) { | |
| 1889 // really shouldn't be NULL but what the heck, check can't hurt | |
| 1890 if (pelements[i] == NULL || strlen(pelements[i]) == 0) { | |
| 1891 continue; // skip the empty path values | |
| 1892 } | |
| 1893 snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname); | |
| 1894 if (file_exists(buffer)) { | |
|
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|
1895 retval = true; |
| 691 | 1896 break; |
| 1897 } | |
| 1898 } | |
| 1899 // release the storage | |
| 1900 for (int i = 0 ; i < n ; i++) { | |
| 1901 if (pelements[i] != NULL) { | |
| 6197 | 1902 FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); |
| 691 | 1903 } |
| 1904 } | |
| 1905 if (pelements != NULL) { | |
| 6197 | 1906 FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); |
| 691 | 1907 } |
| 242 | 1908 } else { |
| 691 | 1909 snprintf(buffer, buflen, "%s/lib%s.so", pname, fname); |
|
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1910 retval = true; |
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1911 } |
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1912 return retval; |
| 242 | 1913 } |
| 1914 | |
| 0 | 1915 const char* os::get_current_directory(char *buf, int buflen) { |
| 1916 return getcwd(buf, buflen); | |
| 1917 } | |
| 1918 | |
|
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1919 // check if addr is inside libjvm.so |
| 0 | 1920 bool os::address_is_in_vm(address addr) { |
| 1921 static address libjvm_base_addr; | |
| 1922 Dl_info dlinfo; | |
| 1923 | |
| 1924 if (libjvm_base_addr == NULL) { | |
| 1925 dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo); | |
| 1926 libjvm_base_addr = (address)dlinfo.dli_fbase; | |
| 1927 assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); | |
| 1928 } | |
| 1929 | |
| 1930 if (dladdr((void *)addr, &dlinfo)) { | |
| 1931 if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; | |
| 1932 } | |
| 1933 | |
| 1934 return false; | |
| 1935 } | |
| 1936 | |
| 1937 typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int); | |
| 1938 static dladdr1_func_type dladdr1_func = NULL; | |
| 1939 | |
| 1940 bool os::dll_address_to_function_name(address addr, char *buf, | |
| 1941 int buflen, int * offset) { | |
| 1942 Dl_info dlinfo; | |
| 1943 | |
| 1944 // dladdr1_func was initialized in os::init() | |
| 1945 if (dladdr1_func){ | |
| 1946 // yes, we have dladdr1 | |
| 1947 | |
| 1948 // Support for dladdr1 is checked at runtime; it may be | |
| 1949 // available even if the vm is built on a machine that does | |
| 1950 // not have dladdr1 support. Make sure there is a value for | |
| 1951 // RTLD_DL_SYMENT. | |
| 1952 #ifndef RTLD_DL_SYMENT | |
| 1953 #define RTLD_DL_SYMENT 1 | |
| 1954 #endif | |
|
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1955 #ifdef _LP64 |
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1956 Elf64_Sym * info; |
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1957 #else |
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1958 Elf32_Sym * info; |
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1959 #endif |
| 0 | 1960 if (dladdr1_func((void *)addr, &dlinfo, (void **)&info, |
| 1961 RTLD_DL_SYMENT)) { | |
|
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1962 if ((char *)dlinfo.dli_saddr + info->st_size > (char *)addr) { |
|
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1963 if (buf != NULL) { |
|
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1964 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) |
|
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1965 jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); |
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1966 } |
|
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1967 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
|
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1968 return true; |
|
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|
1969 } |
| 0 | 1970 } |
|
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1971 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) { |
|
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1972 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
| 4803 | 1973 buf, buflen, offset, dlinfo.dli_fname)) { |
|
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1974 return true; |
|
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|
1975 } |
|
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1976 } |
|
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1977 if (buf != NULL) buf[0] = '\0'; |
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1978 if (offset != NULL) *offset = -1; |
|
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1979 return false; |
| 0 | 1980 } else { |
| 1981 // no, only dladdr is available | |
|
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1982 if (dladdr((void *)addr, &dlinfo)) { |
|
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|
1983 if (buf != NULL) { |
|
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|
1984 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) |
|
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1985 jio_snprintf(buf, buflen, dlinfo.dli_sname); |
|
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|
1986 } |
|
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|
1987 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
|
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|
1988 return true; |
|
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|
1989 } else if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) { |
|
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|
1990 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
| 4803 | 1991 buf, buflen, offset, dlinfo.dli_fname)) { |
| 0 | 1992 return true; |
|
2022
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1993 } |
| 0 | 1994 } |
|
2022
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1995 if (buf != NULL) buf[0] = '\0'; |
|
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|
1996 if (offset != NULL) *offset = -1; |
|
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|
1997 return false; |
| 0 | 1998 } |
| 1999 } | |
| 2000 | |
| 2001 bool os::dll_address_to_library_name(address addr, char* buf, | |
| 2002 int buflen, int* offset) { | |
| 2003 Dl_info dlinfo; | |
| 2004 | |
| 2005 if (dladdr((void*)addr, &dlinfo)){ | |
| 2006 if (buf) jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); | |
| 2007 if (offset) *offset = addr - (address)dlinfo.dli_fbase; | |
| 2008 return true; | |
| 2009 } else { | |
| 2010 if (buf) buf[0] = '\0'; | |
| 2011 if (offset) *offset = -1; | |
| 2012 return false; | |
| 2013 } | |
| 2014 } | |
| 2015 | |
| 2016 // Prints the names and full paths of all opened dynamic libraries | |
| 2017 // for current process | |
| 2018 void os::print_dll_info(outputStream * st) { | |
| 2019 Dl_info dli; | |
| 2020 void *handle; | |
| 2021 Link_map *map; | |
| 2022 Link_map *p; | |
| 2023 | |
| 2024 st->print_cr("Dynamic libraries:"); st->flush(); | |
| 2025 | |
| 2026 if (!dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli)) { | |
| 2027 st->print_cr("Error: Cannot print dynamic libraries."); | |
| 2028 return; | |
| 2029 } | |
| 2030 handle = dlopen(dli.dli_fname, RTLD_LAZY); | |
| 2031 if (handle == NULL) { | |
| 2032 st->print_cr("Error: Cannot print dynamic libraries."); | |
| 2033 return; | |
| 2034 } | |
| 2035 dlinfo(handle, RTLD_DI_LINKMAP, &map); | |
| 2036 if (map == NULL) { | |
| 2037 st->print_cr("Error: Cannot print dynamic libraries."); | |
| 2038 return; | |
| 2039 } | |
| 2040 | |
| 2041 while (map->l_prev != NULL) | |
| 2042 map = map->l_prev; | |
| 2043 | |
| 2044 while (map != NULL) { | |
| 2045 st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name); | |
| 2046 map = map->l_next; | |
| 2047 } | |
| 2048 | |
| 2049 dlclose(handle); | |
| 2050 } | |
| 2051 | |
| 2052 // Loads .dll/.so and | |
| 2053 // in case of error it checks if .dll/.so was built for the | |
| 2054 // same architecture as Hotspot is running on | |
| 2055 | |
| 2056 void * os::dll_load(const char *filename, char *ebuf, int ebuflen) | |
| 2057 { | |
| 2058 void * result= ::dlopen(filename, RTLD_LAZY); | |
| 2059 if (result != NULL) { | |
| 2060 // Successful loading | |
| 2061 return result; | |
| 2062 } | |
| 2063 | |
| 2064 Elf32_Ehdr elf_head; | |
| 2065 | |
| 2066 // Read system error message into ebuf | |
| 2067 // It may or may not be overwritten below | |
| 2068 ::strncpy(ebuf, ::dlerror(), ebuflen-1); | |
| 2069 ebuf[ebuflen-1]='\0'; | |
| 2070 int diag_msg_max_length=ebuflen-strlen(ebuf); | |
| 2071 char* diag_msg_buf=ebuf+strlen(ebuf); | |
| 2072 | |
| 2073 if (diag_msg_max_length==0) { | |
| 2074 // No more space in ebuf for additional diagnostics message | |
| 2075 return NULL; | |
| 2076 } | |
| 2077 | |
| 2078 | |
| 2079 int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); | |
| 2080 | |
| 2081 if (file_descriptor < 0) { | |
| 2082 // Can't open library, report dlerror() message | |
| 2083 return NULL; | |
| 2084 } | |
| 2085 | |
| 2086 bool failed_to_read_elf_head= | |
| 2087 (sizeof(elf_head)!= | |
| 2088 (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ; | |
| 2089 | |
| 2090 ::close(file_descriptor); | |
| 2091 if (failed_to_read_elf_head) { | |
| 2092 // file i/o error - report dlerror() msg | |
| 2093 return NULL; | |
| 2094 } | |
| 2095 | |
| 2096 typedef struct { | |
| 2097 Elf32_Half code; // Actual value as defined in elf.h | |
| 2098 Elf32_Half compat_class; // Compatibility of archs at VM's sense | |
| 2099 char elf_class; // 32 or 64 bit | |
| 2100 char endianess; // MSB or LSB | |
| 2101 char* name; // String representation | |
| 2102 } arch_t; | |
| 2103 | |
| 2104 static const arch_t arch_array[]={ | |
| 2105 {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
| 2106 {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
| 2107 {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, | |
| 2108 {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, | |
| 2109 {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
| 2110 {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
| 2111 {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, | |
| 2112 {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, | |
|
1681
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|
2113 {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}, |
|
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|
2114 {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM 32"} |
| 0 | 2115 }; |
| 2116 | |
| 2117 #if (defined IA32) | |
| 2118 static Elf32_Half running_arch_code=EM_386; | |
| 2119 #elif (defined AMD64) | |
| 2120 static Elf32_Half running_arch_code=EM_X86_64; | |
| 2121 #elif (defined IA64) | |
| 2122 static Elf32_Half running_arch_code=EM_IA_64; | |
| 2123 #elif (defined __sparc) && (defined _LP64) | |
| 2124 static Elf32_Half running_arch_code=EM_SPARCV9; | |
| 2125 #elif (defined __sparc) && (!defined _LP64) | |
| 2126 static Elf32_Half running_arch_code=EM_SPARC; | |
| 2127 #elif (defined __powerpc64__) | |
| 2128 static Elf32_Half running_arch_code=EM_PPC64; | |
| 2129 #elif (defined __powerpc__) | |
| 2130 static Elf32_Half running_arch_code=EM_PPC; | |
|
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|
2131 #elif (defined ARM) |
|
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|
2132 static Elf32_Half running_arch_code=EM_ARM; |
| 0 | 2133 #else |
| 2134 #error Method os::dll_load requires that one of following is defined:\ | |
|
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|
2135 IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM |
| 0 | 2136 #endif |
| 2137 | |
| 2138 // Identify compatability class for VM's architecture and library's architecture | |
| 2139 // Obtain string descriptions for architectures | |
| 2140 | |
| 2141 arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; | |
| 2142 int running_arch_index=-1; | |
| 2143 | |
| 2144 for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) { | |
| 2145 if (running_arch_code == arch_array[i].code) { | |
| 2146 running_arch_index = i; | |
| 2147 } | |
| 2148 if (lib_arch.code == arch_array[i].code) { | |
| 2149 lib_arch.compat_class = arch_array[i].compat_class; | |
| 2150 lib_arch.name = arch_array[i].name; | |
| 2151 } | |
| 2152 } | |
| 2153 | |
| 2154 assert(running_arch_index != -1, | |
| 2155 "Didn't find running architecture code (running_arch_code) in arch_array"); | |
| 2156 if (running_arch_index == -1) { | |
| 2157 // Even though running architecture detection failed | |
| 2158 // we may still continue with reporting dlerror() message | |
| 2159 return NULL; | |
| 2160 } | |
| 2161 | |
| 2162 if (lib_arch.endianess != arch_array[running_arch_index].endianess) { | |
| 2163 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); | |
| 2164 return NULL; | |
| 2165 } | |
| 2166 | |
| 2167 if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { | |
| 2168 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); | |
| 2169 return NULL; | |
| 2170 } | |
| 2171 | |
| 2172 if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { | |
| 2173 if ( lib_arch.name!=NULL ) { | |
| 2174 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
| 2175 " (Possible cause: can't load %s-bit .so on a %s-bit platform)", | |
| 2176 lib_arch.name, arch_array[running_arch_index].name); | |
| 2177 } else { | |
| 2178 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
| 2179 " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", | |
| 2180 lib_arch.code, | |
| 2181 arch_array[running_arch_index].name); | |
| 2182 } | |
| 2183 } | |
| 2184 | |
| 2185 return NULL; | |
| 2186 } | |
| 2187 | |
| 242 | 2188 void* os::dll_lookup(void* handle, const char* name) { |
| 2189 return dlsym(handle, name); | |
| 2190 } | |
| 0 | 2191 |
|
1980
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|
2192 int os::stat(const char *path, struct stat *sbuf) { |
|
828eafbd85cc
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diff
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|
2193 char pathbuf[MAX_PATH]; |
|
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diff
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|
2194 if (strlen(path) > MAX_PATH - 1) { |
|
828eafbd85cc
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|
2195 errno = ENAMETOOLONG; |
|
828eafbd85cc
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diff
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|
2196 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
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|
2197 } |
|
828eafbd85cc
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1972
diff
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|
2198 os::native_path(strcpy(pathbuf, path)); |
|
828eafbd85cc
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1972
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|
2199 return ::stat(pathbuf, sbuf); |
|
828eafbd85cc
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diff
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|
2200 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2201 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2202 static bool _print_ascii_file(const char* filename, outputStream* st) { |
|
828eafbd85cc
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ikrylov
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1972
diff
changeset
|
2203 int fd = ::open(filename, O_RDONLY); |
| 0 | 2204 if (fd == -1) { |
| 2205 return false; | |
| 2206 } | |
| 2207 | |
| 2208 char buf[32]; | |
| 2209 int bytes; | |
|
1980
828eafbd85cc
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ikrylov
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1972
diff
changeset
|
2210 while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) { |
| 0 | 2211 st->print_raw(buf, bytes); |
| 2212 } | |
| 2213 | |
|
1980
828eafbd85cc
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1972
diff
changeset
|
2214 ::close(fd); |
| 0 | 2215 |
| 2216 return true; | |
| 2217 } | |
| 2218 | |
|
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|
2219 void os::print_os_info_brief(outputStream* st) { |
|
7432b9db36ff
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diff
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|
2220 os::Solaris::print_distro_info(st); |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
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|
2221 |
|
7432b9db36ff
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diff
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|
2222 os::Posix::print_uname_info(st); |
|
7432b9db36ff
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|
2223 |
|
7432b9db36ff
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5903
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|
2224 os::Solaris::print_libversion_info(st); |
|
7432b9db36ff
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diff
changeset
|
2225 } |
|
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|
2226 |
| 0 | 2227 void os::print_os_info(outputStream* st) { |
| 2228 st->print("OS:"); | |
| 2229 | |
|
6080
7432b9db36ff
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|
2230 os::Solaris::print_distro_info(st); |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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|
2231 |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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|
2232 os::Posix::print_uname_info(st); |
|
7432b9db36ff
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|
2233 |
|
7432b9db36ff
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5903
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changeset
|
2234 os::Solaris::print_libversion_info(st); |
|
7432b9db36ff
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changeset
|
2235 |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
changeset
|
2236 os::Posix::print_rlimit_info(st); |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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5903
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|
2237 |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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5903
diff
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|
2238 os::Posix::print_load_average(st); |
|
7432b9db36ff
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|
2239 } |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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|
2240 |
|
7432b9db36ff
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|
2241 void os::Solaris::print_distro_info(outputStream* st) { |
| 0 | 2242 if (!_print_ascii_file("/etc/release", st)) { |
|
6080
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|
2243 st->print("Solaris"); |
|
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|
2244 } |
|
7432b9db36ff
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|
2245 st->cr(); |
|
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|
2246 } |
|
7432b9db36ff
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|
2247 |
|
7432b9db36ff
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|
2248 void os::Solaris::print_libversion_info(outputStream* st) { |
|
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|
2249 if (os::Solaris::T2_libthread()) { |
|
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|
2250 st->print(" (T2 libthread)"); |
|
7432b9db36ff
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|
2251 } |
|
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|
2252 else { |
|
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|
2253 st->print(" (T1 libthread)"); |
| 0 | 2254 } |
| 2255 st->cr(); | |
|
6080
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|
2256 } |
| 0 | 2257 |
| 2258 static bool check_addr0(outputStream* st) { | |
| 2259 jboolean status = false; | |
|
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diff
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|
2260 int fd = ::open("/proc/self/map",O_RDONLY); |
| 0 | 2261 if (fd >= 0) { |
| 2262 prmap_t p; | |
|
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1972
diff
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|
2263 while(::read(fd, &p, sizeof(p)) > 0) { |
| 0 | 2264 if (p.pr_vaddr == 0x0) { |
| 2265 st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname); | |
| 2266 st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname); | |
| 2267 st->print("Access:"); | |
| 2268 st->print("%s",(p.pr_mflags & MA_READ) ? "r" : "-"); | |
| 2269 st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-"); | |
| 2270 st->print("%s",(p.pr_mflags & MA_EXEC) ? "x" : "-"); | |
| 2271 st->cr(); | |
| 2272 status = true; | |
| 2273 } | |
|
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diff
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|
2274 ::close(fd); |
| 0 | 2275 } |
| 2276 } | |
| 2277 return status; | |
| 2278 } | |
| 2279 | |
|
3800
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7061225: os::print_cpu_info() should support os-specific data
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3318
diff
changeset
|
2280 void os::pd_print_cpu_info(outputStream* st) { |
|
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diff
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|
2281 // Nothing to do for now. |
|
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diff
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|
2282 } |
|
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|
2283 |
| 0 | 2284 void os::print_memory_info(outputStream* st) { |
| 2285 st->print("Memory:"); | |
| 2286 st->print(" %dk page", os::vm_page_size()>>10); | |
| 2287 st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10); | |
| 2288 st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10); | |
| 2289 st->cr(); | |
| 2290 (void) check_addr0(st); | |
| 2291 } | |
| 2292 | |
| 2293 // Taken from /usr/include/sys/machsig.h Supposed to be architecture specific | |
| 2294 // but they're the same for all the solaris architectures that we support. | |
| 2295 const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR", | |
| 2296 "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG", | |
| 2297 "ILL_COPROC", "ILL_BADSTK" }; | |
| 2298 | |
| 2299 const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV", | |
| 2300 "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES", | |
| 2301 "FPE_FLTINV", "FPE_FLTSUB" }; | |
| 2302 | |
| 2303 const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" }; | |
| 2304 | |
| 2305 const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" }; | |
| 2306 | |
| 2307 void os::print_siginfo(outputStream* st, void* siginfo) { | |
| 2308 st->print("siginfo:"); | |
| 2309 | |
| 2310 const int buflen = 100; | |
| 2311 char buf[buflen]; | |
| 2312 siginfo_t *si = (siginfo_t*)siginfo; | |
| 2313 st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen)); | |
| 2314 char *err = strerror(si->si_errno); | |
| 2315 if (si->si_errno != 0 && err != NULL) { | |
| 2316 st->print("si_errno=%s", err); | |
| 2317 } else { | |
| 2318 st->print("si_errno=%d", si->si_errno); | |
| 2319 } | |
| 2320 const int c = si->si_code; | |
| 2321 assert(c > 0, "unexpected si_code"); | |
| 2322 switch (si->si_signo) { | |
| 2323 case SIGILL: | |
| 2324 st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]); | |
| 2325 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
| 2326 break; | |
| 2327 case SIGFPE: | |
| 2328 st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]); | |
| 2329 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
| 2330 break; | |
| 2331 case SIGSEGV: | |
| 2332 st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]); | |
| 2333 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
| 2334 break; | |
| 2335 case SIGBUS: | |
| 2336 st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]); | |
| 2337 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
| 2338 break; | |
| 2339 default: | |
| 2340 st->print(", si_code=%d", si->si_code); | |
| 2341 // no si_addr | |
| 2342 } | |
| 2343 | |
| 2344 if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && | |
| 2345 UseSharedSpaces) { | |
| 2346 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
| 2347 if (mapinfo->is_in_shared_space(si->si_addr)) { | |
| 2348 st->print("\n\nError accessing class data sharing archive." \ | |
| 2349 " Mapped file inaccessible during execution, " \ | |
| 2350 " possible disk/network problem."); | |
| 2351 } | |
| 2352 } | |
| 2353 st->cr(); | |
| 2354 } | |
| 2355 | |
| 2356 // Moved from whole group, because we need them here for diagnostic | |
| 2357 // prints. | |
| 2358 #define OLDMAXSIGNUM 32 | |
| 2359 static int Maxsignum = 0; | |
| 2360 static int *ourSigFlags = NULL; | |
| 2361 | |
| 2362 extern "C" void sigINTRHandler(int, siginfo_t*, void*); | |
| 2363 | |
| 2364 int os::Solaris::get_our_sigflags(int sig) { | |
| 2365 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
| 2366 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
| 2367 return ourSigFlags[sig]; | |
| 2368 } | |
| 2369 | |
| 2370 void os::Solaris::set_our_sigflags(int sig, int flags) { | |
| 2371 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
| 2372 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
| 2373 ourSigFlags[sig] = flags; | |
| 2374 } | |
| 2375 | |
| 2376 | |
| 2377 static const char* get_signal_handler_name(address handler, | |
| 2378 char* buf, int buflen) { | |
| 2379 int offset; | |
| 2380 bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); | |
| 2381 if (found) { | |
| 2382 // skip directory names | |
| 2383 const char *p1, *p2; | |
| 2384 p1 = buf; | |
| 2385 size_t len = strlen(os::file_separator()); | |
| 2386 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
| 2387 jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); | |
| 2388 } else { | |
| 2389 jio_snprintf(buf, buflen, PTR_FORMAT, handler); | |
| 2390 } | |
| 2391 return buf; | |
| 2392 } | |
| 2393 | |
| 2394 static void print_signal_handler(outputStream* st, int sig, | |
| 2395 char* buf, size_t buflen) { | |
| 2396 struct sigaction sa; | |
| 2397 | |
| 2398 sigaction(sig, NULL, &sa); | |
| 2399 | |
| 2400 st->print("%s: ", os::exception_name(sig, buf, buflen)); | |
| 2401 | |
| 2402 address handler = (sa.sa_flags & SA_SIGINFO) | |
| 2403 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) | |
| 2404 : CAST_FROM_FN_PTR(address, sa.sa_handler); | |
| 2405 | |
| 2406 if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { | |
| 2407 st->print("SIG_DFL"); | |
| 2408 } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { | |
| 2409 st->print("SIG_IGN"); | |
| 2410 } else { | |
| 2411 st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); | |
| 2412 } | |
| 2413 | |
| 2414 st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask); | |
| 2415 | |
| 2416 address rh = VMError::get_resetted_sighandler(sig); | |
| 2417 // May be, handler was resetted by VMError? | |
| 2418 if(rh != NULL) { | |
| 2419 handler = rh; | |
| 2420 sa.sa_flags = VMError::get_resetted_sigflags(sig); | |
| 2421 } | |
| 2422 | |
| 2423 st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags); | |
| 2424 | |
| 2425 // Check: is it our handler? | |
| 2426 if(handler == CAST_FROM_FN_PTR(address, signalHandler) || | |
| 2427 handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) { | |
| 2428 // It is our signal handler | |
| 2429 // check for flags | |
| 2430 if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
| 2431 st->print( | |
| 2432 ", flags was changed from " PTR32_FORMAT ", consider using jsig library", | |
| 2433 os::Solaris::get_our_sigflags(sig)); | |
| 2434 } | |
| 2435 } | |
| 2436 st->cr(); | |
| 2437 } | |
| 2438 | |
| 2439 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
| 2440 st->print_cr("Signal Handlers:"); | |
| 2441 print_signal_handler(st, SIGSEGV, buf, buflen); | |
| 2442 print_signal_handler(st, SIGBUS , buf, buflen); | |
| 2443 print_signal_handler(st, SIGFPE , buf, buflen); | |
| 2444 print_signal_handler(st, SIGPIPE, buf, buflen); | |
| 2445 print_signal_handler(st, SIGXFSZ, buf, buflen); | |
| 2446 print_signal_handler(st, SIGILL , buf, buflen); | |
| 2447 print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen); | |
| 2448 print_signal_handler(st, ASYNC_SIGNAL, buf, buflen); | |
| 2449 print_signal_handler(st, BREAK_SIGNAL, buf, buflen); | |
| 2450 print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen); | |
| 2451 print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); | |
| 2452 print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen); | |
| 2453 print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen); | |
| 2454 print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen); | |
| 2455 } | |
| 2456 | |
| 2457 static char saved_jvm_path[MAXPATHLEN] = { 0 }; | |
| 2458 | |
|
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diff
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|
2459 // Find the full path to the current module, libjvm.so |
| 0 | 2460 void os::jvm_path(char *buf, jint buflen) { |
| 2461 // Error checking. | |
| 2462 if (buflen < MAXPATHLEN) { | |
| 2463 assert(false, "must use a large-enough buffer"); | |
| 2464 buf[0] = '\0'; | |
| 2465 return; | |
| 2466 } | |
| 2467 // Lazy resolve the path to current module. | |
| 2468 if (saved_jvm_path[0] != 0) { | |
| 2469 strcpy(buf, saved_jvm_path); | |
| 2470 return; | |
| 2471 } | |
| 2472 | |
| 2473 Dl_info dlinfo; | |
| 2474 int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo); | |
| 2475 assert(ret != 0, "cannot locate libjvm"); | |
| 2476 realpath((char *)dlinfo.dli_fname, buf); | |
| 2477 | |
|
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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2191
diff
changeset
|
2478 if (Arguments::created_by_gamma_launcher()) { |
| 0 | 2479 // Support for the gamma launcher. Typical value for buf is |
| 2480 // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at | |
| 2481 // the right place in the string, then assume we are installed in a JDK and | |
| 2482 // we're done. Otherwise, check for a JAVA_HOME environment variable and fix | |
| 2483 // up the path so it looks like libjvm.so is installed there (append a | |
| 2484 // fake suffix hotspot/libjvm.so). | |
| 2485 const char *p = buf + strlen(buf) - 1; | |
| 2486 for (int count = 0; p > buf && count < 5; ++count) { | |
| 2487 for (--p; p > buf && *p != '/'; --p) | |
| 2488 /* empty */ ; | |
| 2489 } | |
| 2490 | |
| 2491 if (strncmp(p, "/jre/lib/", 9) != 0) { | |
| 2492 // Look for JAVA_HOME in the environment. | |
| 2493 char* java_home_var = ::getenv("JAVA_HOME"); | |
| 2494 if (java_home_var != NULL && java_home_var[0] != 0) { | |
| 2495 char cpu_arch[12]; | |
| 1642 | 2496 char* jrelib_p; |
| 2497 int len; | |
| 0 | 2498 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
| 2499 #ifdef _LP64 | |
| 2500 // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9. | |
| 2501 if (strcmp(cpu_arch, "sparc") == 0) { | |
| 2502 strcat(cpu_arch, "v9"); | |
| 2503 } else if (strcmp(cpu_arch, "i386") == 0) { | |
| 2504 strcpy(cpu_arch, "amd64"); | |
| 2505 } | |
| 2506 #endif | |
|
7456
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7206
diff
changeset
|
2507 // Check the current module name "libjvm.so". |
| 0 | 2508 p = strrchr(buf, '/'); |
| 2509 assert(strstr(p, "/libjvm") == p, "invalid library name"); | |
| 2510 | |
| 2511 realpath(java_home_var, buf); | |
| 1642 | 2512 // determine if this is a legacy image or modules image |
| 2513 // modules image doesn't have "jre" subdirectory | |
| 2514 len = strlen(buf); | |
| 2515 jrelib_p = buf + len; | |
| 2516 snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch); | |
| 2517 if (0 != access(buf, F_OK)) { | |
| 2518 snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch); | |
| 2519 } | |
| 2520 | |
| 0 | 2521 if (0 == access(buf, F_OK)) { |
|
7456
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diff
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|
2522 // Use current module name "libjvm.so" |
| 1642 | 2523 len = strlen(buf); |
|
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7206
diff
changeset
|
2524 snprintf(buf + len, buflen-len, "/hotspot/libjvm.so"); |
| 0 | 2525 } else { |
| 2526 // Go back to path of .so | |
| 2527 realpath((char *)dlinfo.dli_fname, buf); | |
| 2528 } | |
| 2529 } | |
| 2530 } | |
| 2531 } | |
| 2532 | |
| 2533 strcpy(saved_jvm_path, buf); | |
| 2534 } | |
| 2535 | |
| 2536 | |
| 2537 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
| 2538 // no prefix required, not even "_" | |
| 2539 } | |
| 2540 | |
| 2541 | |
| 2542 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
| 2543 // no suffix required | |
| 2544 } | |
| 2545 | |
|
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diff
changeset
|
2546 // This method is a copy of JDK's sysGetLastErrorString |
|
828eafbd85cc
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diff
changeset
|
2547 // from src/solaris/hpi/src/system_md.c |
|
828eafbd85cc
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diff
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|
2548 |
|
828eafbd85cc
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diff
changeset
|
2549 size_t os::lasterror(char *buf, size_t len) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
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|
2550 |
|
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diff
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|
2551 if (errno == 0) return 0; |
|
828eafbd85cc
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diff
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|
2552 |
|
828eafbd85cc
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diff
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|
2553 const char *s = ::strerror(errno); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2554 size_t n = ::strlen(s); |
|
828eafbd85cc
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diff
changeset
|
2555 if (n >= len) { |
|
828eafbd85cc
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1972
diff
changeset
|
2556 n = len - 1; |
|
828eafbd85cc
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diff
changeset
|
2557 } |
|
828eafbd85cc
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diff
changeset
|
2558 ::strncpy(buf, s, n); |
|
828eafbd85cc
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ikrylov
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diff
changeset
|
2559 buf[n] = '\0'; |
|
828eafbd85cc
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ikrylov
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diff
changeset
|
2560 return n; |
|
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diff
changeset
|
2561 } |
|
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diff
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|
2562 |
| 0 | 2563 |
| 2564 // sun.misc.Signal | |
| 2565 | |
| 2566 extern "C" { | |
| 2567 static void UserHandler(int sig, void *siginfo, void *context) { | |
| 2568 // Ctrl-C is pressed during error reporting, likely because the error | |
| 2569 // handler fails to abort. Let VM die immediately. | |
| 2570 if (sig == SIGINT && is_error_reported()) { | |
| 2571 os::die(); | |
| 2572 } | |
| 2573 | |
| 2574 os::signal_notify(sig); | |
| 2575 // We do not need to reinstate the signal handler each time... | |
| 2576 } | |
| 2577 } | |
| 2578 | |
| 2579 void* os::user_handler() { | |
| 2580 return CAST_FROM_FN_PTR(void*, UserHandler); | |
| 2581 } | |
| 2582 | |
| 2583 extern "C" { | |
| 2584 typedef void (*sa_handler_t)(int); | |
| 2585 typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); | |
| 2586 } | |
| 2587 | |
| 2588 void* os::signal(int signal_number, void* handler) { | |
| 2589 struct sigaction sigAct, oldSigAct; | |
| 2590 sigfillset(&(sigAct.sa_mask)); | |
| 2591 sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND; | |
| 2592 sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); | |
| 2593 | |
| 2594 if (sigaction(signal_number, &sigAct, &oldSigAct)) | |
| 2595 // -1 means registration failed | |
| 2596 return (void *)-1; | |
| 2597 | |
| 2598 return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); | |
| 2599 } | |
| 2600 | |
| 2601 void os::signal_raise(int signal_number) { | |
| 2602 raise(signal_number); | |
| 2603 } | |
| 2604 | |
| 2605 /* | |
| 2606 * The following code is moved from os.cpp for making this | |
| 2607 * code platform specific, which it is by its very nature. | |
| 2608 */ | |
| 2609 | |
| 2610 // a counter for each possible signal value | |
| 2611 static int Sigexit = 0; | |
| 2612 static int Maxlibjsigsigs; | |
| 2613 static jint *pending_signals = NULL; | |
| 2614 static int *preinstalled_sigs = NULL; | |
| 2615 static struct sigaction *chainedsigactions = NULL; | |
| 2616 static sema_t sig_sem; | |
| 2617 typedef int (*version_getting_t)(); | |
| 2618 version_getting_t os::Solaris::get_libjsig_version = NULL; | |
| 2619 static int libjsigversion = NULL; | |
| 2620 | |
| 2621 int os::sigexitnum_pd() { | |
| 2622 assert(Sigexit > 0, "signal memory not yet initialized"); | |
| 2623 return Sigexit; | |
| 2624 } | |
| 2625 | |
| 2626 void os::Solaris::init_signal_mem() { | |
| 2627 // Initialize signal structures | |
| 2628 Maxsignum = SIGRTMAX; | |
| 2629 Sigexit = Maxsignum+1; | |
| 2630 assert(Maxsignum >0, "Unable to obtain max signal number"); | |
| 2631 | |
| 2632 Maxlibjsigsigs = Maxsignum; | |
| 2633 | |
| 2634 // pending_signals has one int per signal | |
| 2635 // The additional signal is for SIGEXIT - exit signal to signal_thread | |
| 6197 | 2636 pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1), mtInternal); |
| 0 | 2637 memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1))); |
| 2638 | |
| 2639 if (UseSignalChaining) { | |
| 2640 chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction) | |
| 6197 | 2641 * (Maxsignum + 1), mtInternal); |
| 0 | 2642 memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1))); |
| 6197 | 2643 preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal); |
| 0 | 2644 memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1))); |
| 2645 } | |
| 6197 | 2646 ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ), mtInternal); |
| 0 | 2647 memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1)); |
| 2648 } | |
| 2649 | |
| 2650 void os::signal_init_pd() { | |
| 2651 int ret; | |
| 2652 | |
| 2653 ret = ::sema_init(&sig_sem, 0, NULL, NULL); | |
| 2654 assert(ret == 0, "sema_init() failed"); | |
| 2655 } | |
| 2656 | |
| 2657 void os::signal_notify(int signal_number) { | |
| 2658 int ret; | |
| 2659 | |
| 2660 Atomic::inc(&pending_signals[signal_number]); | |
| 2661 ret = ::sema_post(&sig_sem); | |
| 2662 assert(ret == 0, "sema_post() failed"); | |
| 2663 } | |
| 2664 | |
| 2665 static int check_pending_signals(bool wait_for_signal) { | |
| 2666 int ret; | |
| 2667 while (true) { | |
| 2668 for (int i = 0; i < Sigexit + 1; i++) { | |
| 2669 jint n = pending_signals[i]; | |
| 2670 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
| 2671 return i; | |
| 2672 } | |
| 2673 } | |
| 2674 if (!wait_for_signal) { | |
| 2675 return -1; | |
| 2676 } | |
| 2677 JavaThread *thread = JavaThread::current(); | |
| 2678 ThreadBlockInVM tbivm(thread); | |
| 2679 | |
| 2680 bool threadIsSuspended; | |
| 2681 do { | |
| 2682 thread->set_suspend_equivalent(); | |
| 2683 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
| 2684 while((ret = ::sema_wait(&sig_sem)) == EINTR) | |
| 2685 ; | |
| 2686 assert(ret == 0, "sema_wait() failed"); | |
| 2687 | |
| 2688 // were we externally suspended while we were waiting? | |
| 2689 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
| 2690 if (threadIsSuspended) { | |
| 2691 // | |
| 2692 // The semaphore has been incremented, but while we were waiting | |
| 2693 // another thread suspended us. We don't want to continue running | |
| 2694 // while suspended because that would surprise the thread that | |
| 2695 // suspended us. | |
| 2696 // | |
| 2697 ret = ::sema_post(&sig_sem); | |
| 2698 assert(ret == 0, "sema_post() failed"); | |
| 2699 | |
| 2700 thread->java_suspend_self(); | |
| 2701 } | |
| 2702 } while (threadIsSuspended); | |
| 2703 } | |
| 2704 } | |
| 2705 | |
| 2706 int os::signal_lookup() { | |
| 2707 return check_pending_signals(false); | |
| 2708 } | |
| 2709 | |
| 2710 int os::signal_wait() { | |
| 2711 return check_pending_signals(true); | |
| 2712 } | |
| 2713 | |
| 2714 //////////////////////////////////////////////////////////////////////////////// | |
| 2715 // Virtual Memory | |
| 2716 | |
| 2717 static int page_size = -1; | |
| 2718 | |
| 2719 // The mmap MAP_ALIGN flag is supported on Solaris 9 and later. init_2() will | |
| 2720 // clear this var if support is not available. | |
| 2721 static bool has_map_align = true; | |
| 2722 | |
| 2723 int os::vm_page_size() { | |
| 2724 assert(page_size != -1, "must call os::init"); | |
| 2725 return page_size; | |
| 2726 } | |
| 2727 | |
| 2728 // Solaris allocates memory by pages. | |
| 2729 int os::vm_allocation_granularity() { | |
| 2730 assert(page_size != -1, "must call os::init"); | |
| 2731 return page_size; | |
| 2732 } | |
| 2733 | |
| 6197 | 2734 bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) { |
| 656 | 2735 int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
| 0 | 2736 size_t size = bytes; |
| 3885 | 2737 char *res = Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, prot); |
| 2738 if (res != NULL) { | |
| 2739 if (UseNUMAInterleaving) { | |
| 2740 numa_make_global(addr, bytes); | |
| 2741 } | |
| 2742 return true; | |
| 2743 } | |
| 2744 return false; | |
| 656 | 2745 } |
| 2746 | |
| 6197 | 2747 bool os::pd_commit_memory(char* addr, size_t bytes, size_t alignment_hint, |
| 656 | 2748 bool exec) { |
| 2749 if (commit_memory(addr, bytes, exec)) { | |
| 0 | 2750 if (UseMPSS && alignment_hint > (size_t)vm_page_size()) { |
| 2751 // If the large page size has been set and the VM | |
| 2752 // is using large pages, use the large page size | |
| 2753 // if it is smaller than the alignment hint. This is | |
| 2754 // a case where the VM wants to use a larger alignment size | |
| 2755 // for its own reasons but still want to use large pages | |
| 2756 // (which is what matters to setting the mpss range. | |
| 2757 size_t page_size = 0; | |
| 2758 if (large_page_size() < alignment_hint) { | |
| 2759 assert(UseLargePages, "Expected to be here for large page use only"); | |
| 2760 page_size = large_page_size(); | |
| 2761 } else { | |
| 2762 // If the alignment hint is less than the large page | |
| 2763 // size, the VM wants a particular alignment (thus the hint) | |
| 2764 // for internal reasons. Try to set the mpss range using | |
| 2765 // the alignment_hint. | |
| 2766 page_size = alignment_hint; | |
| 2767 } | |
| 2768 // Since this is a hint, ignore any failures. | |
| 2769 (void)Solaris::set_mpss_range(addr, bytes, page_size); | |
| 2770 } | |
| 2771 return true; | |
| 2772 } | |
| 2773 return false; | |
| 2774 } | |
| 2775 | |
| 2776 // Uncommit the pages in a specified region. | |
| 6197 | 2777 void os::pd_free_memory(char* addr, size_t bytes, size_t alignment_hint) { |
| 0 | 2778 if (madvise(addr, bytes, MADV_FREE) < 0) { |
| 2779 debug_only(warning("MADV_FREE failed.")); | |
| 2780 return; | |
| 2781 } | |
| 2782 } | |
| 2783 | |
| 6197 | 2784 bool os::pd_create_stack_guard_pages(char* addr, size_t size) { |
|
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|
2785 return os::commit_memory(addr, size); |
|
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|
2786 } |
|
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diff
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|
2787 |
|
3b3d12e645e7
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|
2788 bool os::remove_stack_guard_pages(char* addr, size_t size) { |
|
3b3d12e645e7
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diff
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|
2789 return os::uncommit_memory(addr, size); |
|
3b3d12e645e7
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coleenp
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1123
diff
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|
2790 } |
|
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diff
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|
2791 |
| 0 | 2792 // Change the page size in a given range. |
| 6197 | 2793 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { |
| 0 | 2794 assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned."); |
| 2795 assert((intptr_t)(addr + bytes) % alignment_hint == 0, "End should be aligned."); | |
|
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2304
diff
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|
2796 if (UseLargePages && UseMPSS) { |
|
c303b3532d4a
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diff
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|
2797 Solaris::set_mpss_range(addr, bytes, alignment_hint); |
|
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2304
diff
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|
2798 } |
| 0 | 2799 } |
| 2800 | |
| 2801 // Tell the OS to make the range local to the first-touching LWP | |
| 141 | 2802 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { |
| 0 | 2803 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); |
| 2804 if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) { | |
| 2805 debug_only(warning("MADV_ACCESS_LWP failed.")); | |
| 2806 } | |
| 2807 } | |
| 2808 | |
| 2809 // Tell the OS that this range would be accessed from different LWPs. | |
| 2810 void os::numa_make_global(char *addr, size_t bytes) { | |
| 2811 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); | |
| 2812 if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) { | |
| 2813 debug_only(warning("MADV_ACCESS_MANY failed.")); | |
| 2814 } | |
| 2815 } | |
| 2816 | |
| 2817 // Get the number of the locality groups. | |
| 2818 size_t os::numa_get_groups_num() { | |
| 2819 size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie()); | |
| 2820 return n != -1 ? n : 1; | |
| 2821 } | |
| 2822 | |
| 2823 // Get a list of leaf locality groups. A leaf lgroup is group that | |
| 2824 // doesn't have any children. Typical leaf group is a CPU or a CPU/memory | |
| 2825 // board. An LWP is assigned to one of these groups upon creation. | |
| 2826 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
| 2827 if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) { | |
| 2828 ids[0] = 0; | |
| 2829 return 1; | |
| 2830 } | |
| 2831 int result_size = 0, top = 1, bottom = 0, cur = 0; | |
| 2832 for (int k = 0; k < size; k++) { | |
| 2833 int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur], | |
| 2834 (Solaris::lgrp_id_t*)&ids[top], size - top); | |
| 2835 if (r == -1) { | |
| 2836 ids[0] = 0; | |
| 2837 return 1; | |
| 2838 } | |
| 2839 if (!r) { | |
|
144
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2840 // That's a leaf node. |
| 0 | 2841 assert (bottom <= cur, "Sanity check"); |
|
144
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141
diff
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|
2842 // Check if the node has memory |
|
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2843 if (Solaris::lgrp_resources(Solaris::lgrp_cookie(), ids[cur], |
|
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2844 NULL, 0, LGRP_RSRC_MEM) > 0) { |
|
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2845 ids[bottom++] = ids[cur]; |
|
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2846 } |
| 0 | 2847 } |
| 2848 top += r; | |
| 2849 cur++; | |
| 2850 } | |
|
268
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
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267
diff
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|
2851 if (bottom == 0) { |
|
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
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267
diff
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|
2852 // Handle a situation, when the OS reports no memory available. |
|
d6340ab4105b
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|
2853 // Assume UMA architecture. |
|
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
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267
diff
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|
2854 ids[0] = 0; |
|
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
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diff
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|
2855 return 1; |
|
d6340ab4105b
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diff
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|
2856 } |
| 0 | 2857 return bottom; |
| 2858 } | |
| 2859 | |
|
342
37f87013dfd8
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144
diff
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|
2860 // Detect the topology change. Typically happens during CPU plugging-unplugging. |
| 0 | 2861 bool os::numa_topology_changed() { |
| 2862 int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie()); | |
| 2863 if (is_stale != -1 && is_stale) { | |
| 2864 Solaris::lgrp_fini(Solaris::lgrp_cookie()); | |
| 2865 Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER); | |
| 2866 assert(c != 0, "Failure to initialize LGRP API"); | |
| 2867 Solaris::set_lgrp_cookie(c); | |
| 2868 return true; | |
| 2869 } | |
| 2870 return false; | |
| 2871 } | |
| 2872 | |
| 2873 // Get the group id of the current LWP. | |
| 2874 int os::numa_get_group_id() { | |
|
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2875 int lgrp_id = Solaris::lgrp_home(P_LWPID, P_MYID); |
| 0 | 2876 if (lgrp_id == -1) { |
| 2877 return 0; | |
| 2878 } | |
|
144
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2879 const int size = os::numa_get_groups_num(); |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
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141
diff
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|
2880 int *ids = (int*)alloca(size * sizeof(int)); |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
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141
diff
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|
2881 |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2882 // Get the ids of all lgroups with memory; r is the count. |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2883 int r = Solaris::lgrp_resources(Solaris::lgrp_cookie(), lgrp_id, |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
changeset
|
2884 (Solaris::lgrp_id_t*)ids, size, LGRP_RSRC_MEM); |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2885 if (r <= 0) { |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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parents:
141
diff
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|
2886 return 0; |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
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|
2887 } |
|
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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141
diff
changeset
|
2888 return ids[os::random() % r]; |
| 0 | 2889 } |
| 2890 | |
| 2891 // Request information about the page. | |
| 2892 bool os::get_page_info(char *start, page_info* info) { | |
| 2893 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
| 2894 uint64_t addr = (uintptr_t)start; | |
| 2895 uint64_t outdata[2]; | |
| 2896 uint_t validity = 0; | |
| 2897 | |
| 2898 if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) { | |
| 2899 return false; | |
| 2900 } | |
| 2901 | |
| 2902 info->size = 0; | |
| 2903 info->lgrp_id = -1; | |
| 2904 | |
| 2905 if ((validity & 1) != 0) { | |
| 2906 if ((validity & 2) != 0) { | |
| 2907 info->lgrp_id = outdata[0]; | |
| 2908 } | |
| 2909 if ((validity & 4) != 0) { | |
| 2910 info->size = outdata[1]; | |
| 2911 } | |
| 2912 return true; | |
| 2913 } | |
| 2914 return false; | |
| 2915 } | |
| 2916 | |
| 2917 // Scan the pages from start to end until a page different than | |
| 2918 // the one described in the info parameter is encountered. | |
| 2919 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
| 2920 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
| 2921 const size_t types = sizeof(info_types) / sizeof(info_types[0]); | |
| 2922 uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT]; | |
| 2923 uint_t validity[MAX_MEMINFO_CNT]; | |
| 2924 | |
| 2925 size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size); | |
| 2926 uint64_t p = (uint64_t)start; | |
| 2927 while (p < (uint64_t)end) { | |
| 2928 addrs[0] = p; | |
| 2929 size_t addrs_count = 1; | |
|
8739
ca9580859cf4
8004697: SIGSEGV on Solaris sparc with -XX:+UseNUMA
stefank
parents:
8067
diff
changeset
|
2930 while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] + page_size < (uint64_t)end) { |
| 0 | 2931 addrs[addrs_count] = addrs[addrs_count - 1] + page_size; |
| 2932 addrs_count++; | |
| 2933 } | |
| 2934 | |
| 2935 if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) { | |
| 2936 return NULL; | |
| 2937 } | |
| 2938 | |
| 2939 size_t i = 0; | |
| 2940 for (; i < addrs_count; i++) { | |
| 2941 if ((validity[i] & 1) != 0) { | |
| 2942 if ((validity[i] & 4) != 0) { | |
| 2943 if (outdata[types * i + 1] != page_expected->size) { | |
| 2944 break; | |
| 2945 } | |
| 2946 } else | |
| 2947 if (page_expected->size != 0) { | |
| 2948 break; | |
| 2949 } | |
| 2950 | |
| 2951 if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) { | |
| 2952 if (outdata[types * i] != page_expected->lgrp_id) { | |
| 2953 break; | |
| 2954 } | |
| 2955 } | |
| 2956 } else { | |
| 2957 return NULL; | |
| 2958 } | |
| 2959 } | |
| 2960 | |
| 2961 if (i != addrs_count) { | |
| 2962 if ((validity[i] & 2) != 0) { | |
| 2963 page_found->lgrp_id = outdata[types * i]; | |
| 2964 } else { | |
| 2965 page_found->lgrp_id = -1; | |
| 2966 } | |
| 2967 if ((validity[i] & 4) != 0) { | |
| 2968 page_found->size = outdata[types * i + 1]; | |
| 2969 } else { | |
| 2970 page_found->size = 0; | |
| 2971 } | |
| 2972 return (char*)addrs[i]; | |
| 2973 } | |
| 2974 | |
| 2975 p = addrs[addrs_count - 1] + page_size; | |
| 2976 } | |
| 2977 return end; | |
| 2978 } | |
| 2979 | |
| 6197 | 2980 bool os::pd_uncommit_memory(char* addr, size_t bytes) { |
| 0 | 2981 size_t size = bytes; |
| 2982 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
| 2983 // uncommitted page. Otherwise, the read/write might succeed if we | |
| 2984 // have enough swap space to back the physical page. | |
| 2985 return | |
| 2986 NULL != Solaris::mmap_chunk(addr, size, | |
| 2987 MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, | |
| 2988 PROT_NONE); | |
| 2989 } | |
| 2990 | |
| 2991 char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) { | |
| 2992 char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0); | |
| 2993 | |
| 2994 if (b == MAP_FAILED) { | |
| 2995 return NULL; | |
| 2996 } | |
| 2997 return b; | |
| 2998 } | |
| 2999 | |
|
60
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0
diff
changeset
|
3000 char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed) { |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3001 char* addr = requested_addr; |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3002 int flags = MAP_PRIVATE | MAP_NORESERVE; |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3003 |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3004 assert(!(fixed && (alignment_hint > 0)), "alignment hint meaningless with fixed mmap"); |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3005 |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3006 if (fixed) { |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3007 flags |= MAP_FIXED; |
|
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3008 } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) { |
| 0 | 3009 flags |= MAP_ALIGN; |
| 3010 addr = (char*) alignment_hint; | |
| 3011 } | |
| 3012 | |
| 3013 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
| 3014 // uncommitted page. Otherwise, the read/write might succeed if we | |
| 3015 // have enough swap space to back the physical page. | |
|
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3016 return mmap_chunk(addr, bytes, flags, PROT_NONE); |
|
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3017 } |
|
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3018 |
| 6197 | 3019 char* os::pd_reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) { |
|
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3020 char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL)); |
| 0 | 3021 |
| 3022 guarantee(requested_addr == NULL || requested_addr == addr, | |
| 3023 "OS failed to return requested mmap address."); | |
| 3024 return addr; | |
| 3025 } | |
| 3026 | |
| 3027 // Reserve memory at an arbitrary address, only if that area is | |
| 3028 // available (and not reserved for something else). | |
| 3029 | |
| 6197 | 3030 char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
| 0 | 3031 const int max_tries = 10; |
| 3032 char* base[max_tries]; | |
| 3033 size_t size[max_tries]; | |
| 3034 | |
| 3035 // Solaris adds a gap between mmap'ed regions. The size of the gap | |
| 3036 // is dependent on the requested size and the MMU. Our initial gap | |
| 3037 // value here is just a guess and will be corrected later. | |
| 3038 bool had_top_overlap = false; | |
| 3039 bool have_adjusted_gap = false; | |
| 3040 size_t gap = 0x400000; | |
| 3041 | |
| 3042 // Assert only that the size is a multiple of the page size, since | |
| 3043 // that's all that mmap requires, and since that's all we really know | |
| 3044 // about at this low abstraction level. If we need higher alignment, | |
| 3045 // we can either pass an alignment to this method or verify alignment | |
| 3046 // in one of the methods further up the call chain. See bug 5044738. | |
| 3047 assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); | |
| 3048 | |
|
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3049 // Since snv_84, Solaris attempts to honor the address hint - see 5003415. |
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3050 // Give it a try, if the kernel honors the hint we can return immediately. |
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3051 char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false); |
|
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3052 |
|
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3053 volatile int err = errno; |
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3054 if (addr == requested_addr) { |
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3055 return addr; |
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3056 } else if (addr != NULL) { |
|
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3057 pd_unmap_memory(addr, bytes); |
|
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3058 } |
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3059 |
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|
3060 if (PrintMiscellaneous && Verbose) { |
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3061 char buf[256]; |
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3062 buf[0] = '\0'; |
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3063 if (addr == NULL) { |
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3064 jio_snprintf(buf, sizeof(buf), ": %s", strerror(err)); |
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3065 } |
| 2080 | 3066 warning("attempt_reserve_memory_at: couldn't reserve " SIZE_FORMAT " bytes at " |
|
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3067 PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT |
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|
3068 "%s", bytes, requested_addr, addr, buf); |
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|
3069 } |
|
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|
3070 |
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3071 // Address hint method didn't work. Fall back to the old method. |
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|
3072 // In theory, once SNV becomes our oldest supported platform, this |
|
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|
3073 // code will no longer be needed. |
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|
3074 // |
| 0 | 3075 // Repeatedly allocate blocks until the block is allocated at the |
| 3076 // right spot. Give up after max_tries. | |
| 3077 int i; | |
| 3078 for (i = 0; i < max_tries; ++i) { | |
| 3079 base[i] = reserve_memory(bytes); | |
| 3080 | |
| 3081 if (base[i] != NULL) { | |
| 3082 // Is this the block we wanted? | |
| 3083 if (base[i] == requested_addr) { | |
| 3084 size[i] = bytes; | |
| 3085 break; | |
| 3086 } | |
| 3087 | |
| 3088 // check that the gap value is right | |
| 3089 if (had_top_overlap && !have_adjusted_gap) { | |
| 3090 size_t actual_gap = base[i-1] - base[i] - bytes; | |
| 3091 if (gap != actual_gap) { | |
| 3092 // adjust the gap value and retry the last 2 allocations | |
| 3093 assert(i > 0, "gap adjustment code problem"); | |
| 3094 have_adjusted_gap = true; // adjust the gap only once, just in case | |
| 3095 gap = actual_gap; | |
| 3096 if (PrintMiscellaneous && Verbose) { | |
| 3097 warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap); | |
| 3098 } | |
| 3099 unmap_memory(base[i], bytes); | |
| 3100 unmap_memory(base[i-1], size[i-1]); | |
| 3101 i-=2; | |
| 3102 continue; | |
| 3103 } | |
| 3104 } | |
| 3105 | |
| 3106 // Does this overlap the block we wanted? Give back the overlapped | |
| 3107 // parts and try again. | |
| 3108 // | |
| 3109 // There is still a bug in this code: if top_overlap == bytes, | |
| 3110 // the overlap is offset from requested region by the value of gap. | |
| 3111 // In this case giving back the overlapped part will not work, | |
| 3112 // because we'll give back the entire block at base[i] and | |
| 3113 // therefore the subsequent allocation will not generate a new gap. | |
| 3114 // This could be fixed with a new algorithm that used larger | |
| 3115 // or variable size chunks to find the requested region - | |
| 3116 // but such a change would introduce additional complications. | |
| 3117 // It's rare enough that the planets align for this bug, | |
| 3118 // so we'll just wait for a fix for 6204603/5003415 which | |
| 3119 // will provide a mmap flag to allow us to avoid this business. | |
| 3120 | |
| 3121 size_t top_overlap = requested_addr + (bytes + gap) - base[i]; | |
| 3122 if (top_overlap >= 0 && top_overlap < bytes) { | |
| 3123 had_top_overlap = true; | |
| 3124 unmap_memory(base[i], top_overlap); | |
| 3125 base[i] += top_overlap; | |
| 3126 size[i] = bytes - top_overlap; | |
| 3127 } else { | |
| 3128 size_t bottom_overlap = base[i] + bytes - requested_addr; | |
| 3129 if (bottom_overlap >= 0 && bottom_overlap < bytes) { | |
| 3130 if (PrintMiscellaneous && Verbose && bottom_overlap == 0) { | |
| 3131 warning("attempt_reserve_memory_at: possible alignment bug"); | |
| 3132 } | |
| 3133 unmap_memory(requested_addr, bottom_overlap); | |
| 3134 size[i] = bytes - bottom_overlap; | |
| 3135 } else { | |
| 3136 size[i] = bytes; | |
| 3137 } | |
| 3138 } | |
| 3139 } | |
| 3140 } | |
| 3141 | |
| 3142 // Give back the unused reserved pieces. | |
| 3143 | |
| 3144 for (int j = 0; j < i; ++j) { | |
| 3145 if (base[j] != NULL) { | |
| 3146 unmap_memory(base[j], size[j]); | |
| 3147 } | |
| 3148 } | |
| 3149 | |
| 3150 return (i < max_tries) ? requested_addr : NULL; | |
| 3151 } | |
| 3152 | |
| 6197 | 3153 bool os::pd_release_memory(char* addr, size_t bytes) { |
| 0 | 3154 size_t size = bytes; |
| 3155 return munmap(addr, size) == 0; | |
| 3156 } | |
| 3157 | |
| 3158 static bool solaris_mprotect(char* addr, size_t bytes, int prot) { | |
| 3159 assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()), | |
| 3160 "addr must be page aligned"); | |
| 3161 int retVal = mprotect(addr, bytes, prot); | |
| 3162 return retVal == 0; | |
| 3163 } | |
| 3164 | |
|
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3165 // Protect memory (Used to pass readonly pages through |
| 0 | 3166 // JNI GetArray<type>Elements with empty arrays.) |
|
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3167 // Also, used for serialization page and for compressed oops null pointer |
|
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3168 // checking. |
|
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3169 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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3170 bool is_committed) { |
|
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|
3171 unsigned int p = 0; |
|
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3172 switch (prot) { |
|
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3173 case MEM_PROT_NONE: p = PROT_NONE; break; |
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3174 case MEM_PROT_READ: p = PROT_READ; break; |
|
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3175 case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
|
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3176 case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; |
|
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3177 default: |
|
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|
3178 ShouldNotReachHere(); |
|
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|
3179 } |
|
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3180 // is_committed is unused. |
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|
3181 return solaris_mprotect(addr, bytes, p); |
| 0 | 3182 } |
| 3183 | |
| 3184 // guard_memory and unguard_memory only happens within stack guard pages. | |
| 3185 // Since ISM pertains only to the heap, guard and unguard memory should not | |
| 3186 /// happen with an ISM region. | |
| 3187 bool os::guard_memory(char* addr, size_t bytes) { | |
| 3188 return solaris_mprotect(addr, bytes, PROT_NONE); | |
| 3189 } | |
| 3190 | |
| 3191 bool os::unguard_memory(char* addr, size_t bytes) { | |
|
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3192 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE); |
| 0 | 3193 } |
| 3194 | |
| 3195 // Large page support | |
| 3196 | |
| 3197 // UseLargePages is the master flag to enable/disable large page memory. | |
| 3198 // UseMPSS and UseISM are supported for compatibility reasons. Their combined | |
| 3199 // effects can be described in the following table: | |
| 3200 // | |
| 3201 // UseLargePages UseMPSS UseISM | |
| 3202 // false * * => UseLargePages is the master switch, turning | |
| 3203 // it off will turn off both UseMPSS and | |
| 3204 // UseISM. VM will not use large page memory | |
| 3205 // regardless the settings of UseMPSS/UseISM. | |
| 3206 // true false false => Unless future Solaris provides other | |
| 3207 // mechanism to use large page memory, this | |
| 3208 // combination is equivalent to -UseLargePages, | |
| 3209 // VM will not use large page memory | |
| 3210 // true true false => JVM will use MPSS for large page memory. | |
| 3211 // This is the default behavior. | |
| 3212 // true false true => JVM will use ISM for large page memory. | |
| 3213 // true true true => JVM will use ISM if it is available. | |
| 3214 // Otherwise, JVM will fall back to MPSS. | |
| 3215 // Becaues ISM is now available on all | |
| 3216 // supported Solaris versions, this combination | |
| 3217 // is equivalent to +UseISM -UseMPSS. | |
| 3218 | |
| 3219 static size_t _large_page_size = 0; | |
| 3220 | |
| 3221 bool os::Solaris::ism_sanity_check(bool warn, size_t * page_size) { | |
| 3222 // x86 uses either 2M or 4M page, depending on whether PAE (Physical Address | |
| 3223 // Extensions) mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. Sparc | |
| 3224 // can support multiple page sizes. | |
| 3225 | |
| 3226 // Don't bother to probe page size because getpagesizes() comes with MPSS. | |
| 3227 // ISM is only recommended on old Solaris where there is no MPSS support. | |
| 3228 // Simply choose a conservative value as default. | |
| 3229 *page_size = LargePageSizeInBytes ? LargePageSizeInBytes : | |
|
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|
3230 SPARC_ONLY(4 * M) IA32_ONLY(4 * M) AMD64_ONLY(2 * M) |
|
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|
3231 ARM_ONLY(2 * M); |
| 0 | 3232 |
| 3233 // ISM is available on all supported Solaris versions | |
| 3234 return true; | |
| 3235 } | |
| 3236 | |
| 3237 // Insertion sort for small arrays (descending order). | |
| 3238 static void insertion_sort_descending(size_t* array, int len) { | |
| 3239 for (int i = 0; i < len; i++) { | |
| 3240 size_t val = array[i]; | |
| 3241 for (size_t key = i; key > 0 && array[key - 1] < val; --key) { | |
| 3242 size_t tmp = array[key]; | |
| 3243 array[key] = array[key - 1]; | |
| 3244 array[key - 1] = tmp; | |
| 3245 } | |
| 3246 } | |
| 3247 } | |
| 3248 | |
| 3249 bool os::Solaris::mpss_sanity_check(bool warn, size_t * page_size) { | |
| 3250 const unsigned int usable_count = VM_Version::page_size_count(); | |
| 3251 if (usable_count == 1) { | |
| 3252 return false; | |
| 3253 } | |
| 3254 | |
| 3859 | 3255 // Find the right getpagesizes interface. When solaris 11 is the minimum |
| 3256 // build platform, getpagesizes() (without the '2') can be called directly. | |
| 3257 typedef int (*gps_t)(size_t[], int); | |
| 3258 gps_t gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes2")); | |
| 3259 if (gps_func == NULL) { | |
| 3260 gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes")); | |
| 3261 if (gps_func == NULL) { | |
| 3262 if (warn) { | |
| 3263 warning("MPSS is not supported by the operating system."); | |
| 3264 } | |
| 3265 return false; | |
| 3266 } | |
| 3267 } | |
| 3268 | |
| 0 | 3269 // Fill the array of page sizes. |
| 3859 | 3270 int n = (*gps_func)(_page_sizes, page_sizes_max); |
| 0 | 3271 assert(n > 0, "Solaris bug?"); |
| 3859 | 3272 |
| 0 | 3273 if (n == page_sizes_max) { |
| 3274 // Add a sentinel value (necessary only if the array was completely filled | |
| 3275 // since it is static (zeroed at initialization)). | |
| 3276 _page_sizes[--n] = 0; | |
| 3277 DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");) | |
| 3278 } | |
| 3279 assert(_page_sizes[n] == 0, "missing sentinel"); | |
| 3859 | 3280 trace_page_sizes("available page sizes", _page_sizes, n); |
| 0 | 3281 |
| 3282 if (n == 1) return false; // Only one page size available. | |
| 3283 | |
| 3284 // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and | |
| 3285 // select up to usable_count elements. First sort the array, find the first | |
| 3286 // acceptable value, then copy the usable sizes to the top of the array and | |
| 3287 // trim the rest. Make sure to include the default page size :-). | |
| 3288 // | |
| 3289 // A better policy could get rid of the 4M limit by taking the sizes of the | |
| 3290 // important VM memory regions (java heap and possibly the code cache) into | |
| 3291 // account. | |
| 3292 insertion_sort_descending(_page_sizes, n); | |
| 3293 const size_t size_limit = | |
| 3294 FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes; | |
| 3295 int beg; | |
| 3296 for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ; | |
| 3297 const int end = MIN2((int)usable_count, n) - 1; | |
| 3298 for (int cur = 0; cur < end; ++cur, ++beg) { | |
| 3299 _page_sizes[cur] = _page_sizes[beg]; | |
| 3300 } | |
| 3301 _page_sizes[end] = vm_page_size(); | |
| 3302 _page_sizes[end + 1] = 0; | |
| 3303 | |
| 3304 if (_page_sizes[end] > _page_sizes[end - 1]) { | |
| 3305 // Default page size is not the smallest; sort again. | |
| 3306 insertion_sort_descending(_page_sizes, end + 1); | |
| 3307 } | |
| 3308 *page_size = _page_sizes[0]; | |
| 3309 | |
| 3859 | 3310 trace_page_sizes("usable page sizes", _page_sizes, end + 1); |
| 0 | 3311 return true; |
| 3312 } | |
| 3313 | |
|
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|
3314 void os::large_page_init() { |
| 0 | 3315 if (!UseLargePages) { |
| 3316 UseISM = false; | |
| 3317 UseMPSS = false; | |
|
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|
3318 return; |
| 0 | 3319 } |
| 3320 | |
| 3321 // print a warning if any large page related flag is specified on command line | |
| 3322 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || | |
| 3323 !FLAG_IS_DEFAULT(UseISM) || | |
| 3324 !FLAG_IS_DEFAULT(UseMPSS) || | |
| 3325 !FLAG_IS_DEFAULT(LargePageSizeInBytes); | |
| 3326 UseISM = UseISM && | |
| 3327 Solaris::ism_sanity_check(warn_on_failure, &_large_page_size); | |
| 3328 if (UseISM) { | |
| 3329 // ISM disables MPSS to be compatible with old JDK behavior | |
| 3330 UseMPSS = false; | |
|
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3331 _page_sizes[0] = _large_page_size; |
|
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|
3332 _page_sizes[1] = vm_page_size(); |
| 0 | 3333 } |
| 3334 | |
| 3335 UseMPSS = UseMPSS && | |
| 3336 Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size); | |
| 3337 | |
| 3338 UseLargePages = UseISM || UseMPSS; | |
| 3339 } | |
| 3340 | |
| 3341 bool os::Solaris::set_mpss_range(caddr_t start, size_t bytes, size_t align) { | |
| 3342 // Signal to OS that we want large pages for addresses | |
| 3343 // from addr, addr + bytes | |
| 3344 struct memcntl_mha mpss_struct; | |
| 3345 mpss_struct.mha_cmd = MHA_MAPSIZE_VA; | |
| 3346 mpss_struct.mha_pagesize = align; | |
| 3347 mpss_struct.mha_flags = 0; | |
| 3348 if (memcntl(start, bytes, MC_HAT_ADVISE, | |
| 3349 (caddr_t) &mpss_struct, 0, 0) < 0) { | |
| 3350 debug_only(warning("Attempt to use MPSS failed.")); | |
| 3351 return false; | |
| 3352 } | |
| 3353 return true; | |
| 3354 } | |
| 3355 | |
| 3885 | 3356 char* os::reserve_memory_special(size_t size, char* addr, bool exec) { |
| 656 | 3357 // "exec" is passed in but not used. Creating the shared image for |
| 3358 // the code cache doesn't have an SHM_X executable permission to check. | |
| 0 | 3359 assert(UseLargePages && UseISM, "only for ISM large pages"); |
| 3360 | |
| 3361 char* retAddr = NULL; | |
| 3362 int shmid; | |
| 3363 key_t ismKey; | |
| 3364 | |
| 3365 bool warn_on_failure = UseISM && | |
| 3366 (!FLAG_IS_DEFAULT(UseLargePages) || | |
| 3367 !FLAG_IS_DEFAULT(UseISM) || | |
| 3368 !FLAG_IS_DEFAULT(LargePageSizeInBytes) | |
| 3369 ); | |
| 3370 char msg[128]; | |
| 3371 | |
| 3372 ismKey = IPC_PRIVATE; | |
| 3373 | |
| 3374 // Create a large shared memory region to attach to based on size. | |
| 3375 // Currently, size is the total size of the heap | |
| 3376 shmid = shmget(ismKey, size, SHM_R | SHM_W | IPC_CREAT); | |
| 3377 if (shmid == -1){ | |
| 3378 if (warn_on_failure) { | |
| 3379 jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno); | |
| 3380 warning(msg); | |
| 3381 } | |
| 3382 return NULL; | |
| 3383 } | |
| 3384 | |
| 3385 // Attach to the region | |
| 3386 retAddr = (char *) shmat(shmid, 0, SHM_SHARE_MMU | SHM_R | SHM_W); | |
| 3387 int err = errno; | |
| 3388 | |
| 3389 // Remove shmid. If shmat() is successful, the actual shared memory segment | |
| 3390 // will be deleted when it's detached by shmdt() or when the process | |
| 3391 // terminates. If shmat() is not successful this will remove the shared | |
| 3392 // segment immediately. | |
| 3393 shmctl(shmid, IPC_RMID, NULL); | |
| 3394 | |
| 3395 if (retAddr == (char *) -1) { | |
| 3396 if (warn_on_failure) { | |
| 3397 jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err); | |
| 3398 warning(msg); | |
| 3399 } | |
| 3400 return NULL; | |
| 3401 } | |
| 3885 | 3402 if ((retAddr != NULL) && UseNUMAInterleaving) { |
| 3403 numa_make_global(retAddr, size); | |
| 3404 } | |
|
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3405 |
|
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|
3406 // The memory is committed |
|
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|
3407 address pc = CALLER_PC; |
|
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|
3408 MemTracker::record_virtual_memory_reserve((address)retAddr, size, pc); |
|
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|
3409 MemTracker::record_virtual_memory_commit((address)retAddr, size, pc); |
|
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|
3410 |
| 0 | 3411 return retAddr; |
| 3412 } | |
| 3413 | |
| 3414 bool os::release_memory_special(char* base, size_t bytes) { | |
| 3415 // detaching the SHM segment will also delete it, see reserve_memory_special() | |
| 3416 int rslt = shmdt(base); | |
|
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|
3417 if (rslt == 0) { |
|
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|
3418 MemTracker::record_virtual_memory_uncommit((address)base, bytes); |
|
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|
3419 MemTracker::record_virtual_memory_release((address)base, bytes); |
|
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3420 return true; |
|
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|
3421 } else { |
|
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|
3422 return false; |
|
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|
3423 } |
| 0 | 3424 } |
| 3425 | |
| 3426 size_t os::large_page_size() { | |
| 3427 return _large_page_size; | |
| 3428 } | |
| 3429 | |
| 3430 // MPSS allows application to commit large page memory on demand; with ISM | |
| 3431 // the entire memory region must be allocated as shared memory. | |
| 3432 bool os::can_commit_large_page_memory() { | |
| 3433 return UseISM ? false : true; | |
| 3434 } | |
| 3435 | |
|
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|
3436 bool os::can_execute_large_page_memory() { |
|
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3437 return UseISM ? false : true; |
|
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|
3438 } |
|
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|
3439 |
| 0 | 3440 static int os_sleep(jlong millis, bool interruptible) { |
| 3441 const jlong limit = INT_MAX; | |
| 3442 jlong prevtime; | |
| 3443 int res; | |
| 3444 | |
| 3445 while (millis > limit) { | |
| 3446 if ((res = os_sleep(limit, interruptible)) != OS_OK) | |
| 3447 return res; | |
| 3448 millis -= limit; | |
| 3449 } | |
| 3450 | |
| 3451 // Restart interrupted polls with new parameters until the proper delay | |
| 3452 // has been completed. | |
| 3453 | |
| 3454 prevtime = getTimeMillis(); | |
| 3455 | |
| 3456 while (millis > 0) { | |
| 3457 jlong newtime; | |
| 3458 | |
| 3459 if (!interruptible) { | |
| 3460 // Following assert fails for os::yield_all: | |
| 3461 // assert(!thread->is_Java_thread(), "must not be java thread"); | |
| 3462 res = poll(NULL, 0, millis); | |
| 3463 } else { | |
| 3464 JavaThread *jt = JavaThread::current(); | |
| 3465 | |
| 3466 INTERRUPTIBLE_NORESTART_VM_ALWAYS(poll(NULL, 0, millis), res, jt, | |
| 3467 os::Solaris::clear_interrupted); | |
| 3468 } | |
| 3469 | |
| 3470 // INTERRUPTIBLE_NORESTART_VM_ALWAYS returns res == OS_INTRPT for | |
| 3471 // thread.Interrupt. | |
| 3472 | |
| 1967 | 3473 // See c/r 6751923. Poll can return 0 before time |
| 3474 // has elapsed if time is set via clock_settime (as NTP does). | |
| 3475 // res == 0 if poll timed out (see man poll RETURN VALUES) | |
| 3476 // using the logic below checks that we really did | |
| 3477 // sleep at least "millis" if not we'll sleep again. | |
| 3478 if( ( res == 0 ) || ((res == OS_ERR) && (errno == EINTR))) { | |
| 0 | 3479 newtime = getTimeMillis(); |
| 3480 assert(newtime >= prevtime, "time moving backwards"); | |
| 3481 /* Doing prevtime and newtime in microseconds doesn't help precision, | |
| 3482 and trying to round up to avoid lost milliseconds can result in a | |
| 3483 too-short delay. */ | |
| 3484 millis -= newtime - prevtime; | |
| 3485 if(millis <= 0) | |
| 3486 return OS_OK; | |
| 3487 prevtime = newtime; | |
| 3488 } else | |
| 3489 return res; | |
| 3490 } | |
| 3491 | |
| 3492 return OS_OK; | |
| 3493 } | |
| 3494 | |
| 3495 // Read calls from inside the vm need to perform state transitions | |
| 3496 size_t os::read(int fd, void *buf, unsigned int nBytes) { | |
| 3497 INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); | |
| 3498 } | |
| 3499 | |
|
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|
3500 size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
|
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|
3501 INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); |
|
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|
3502 } |
|
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|
3503 |
| 0 | 3504 int os::sleep(Thread* thread, jlong millis, bool interruptible) { |
| 3505 assert(thread == Thread::current(), "thread consistency check"); | |
| 3506 | |
| 3507 // TODO-FIXME: this should be removed. | |
| 3508 // On Solaris machines (especially 2.5.1) we found that sometimes the VM gets into a live lock | |
| 3509 // situation with a JavaThread being starved out of a lwp. The kernel doesn't seem to generate | |
| 3510 // a SIGWAITING signal which would enable the threads library to create a new lwp for the starving | |
| 3511 // thread. We suspect that because the Watcher thread keeps waking up at periodic intervals the kernel | |
| 3512 // is fooled into believing that the system is making progress. In the code below we block the | |
| 3513 // the watcher thread while safepoint is in progress so that it would not appear as though the | |
| 3514 // system is making progress. | |
| 3515 if (!Solaris::T2_libthread() && | |
| 3516 thread->is_Watcher_thread() && SafepointSynchronize::is_synchronizing() && !Arguments::has_profile()) { | |
| 3517 // We now try to acquire the threads lock. Since this lock is held by the VM thread during | |
| 3518 // the entire safepoint, the watcher thread will line up here during the safepoint. | |
| 3519 Threads_lock->lock_without_safepoint_check(); | |
| 3520 Threads_lock->unlock(); | |
| 3521 } | |
| 3522 | |
| 3523 if (thread->is_Java_thread()) { | |
| 3524 // This is a JavaThread so we honor the _thread_blocked protocol | |
| 3525 // even for sleeps of 0 milliseconds. This was originally done | |
| 3526 // as a workaround for bug 4338139. However, now we also do it | |
| 3527 // to honor the suspend-equivalent protocol. | |
| 3528 | |
| 3529 JavaThread *jt = (JavaThread *) thread; | |
| 3530 ThreadBlockInVM tbivm(jt); | |
| 3531 | |
| 3532 jt->set_suspend_equivalent(); | |
| 3533 // cleared by handle_special_suspend_equivalent_condition() or | |
| 3534 // java_suspend_self() via check_and_wait_while_suspended() | |
| 3535 | |
| 3536 int ret_code; | |
| 3537 if (millis <= 0) { | |
| 3538 thr_yield(); | |
| 3539 ret_code = 0; | |
| 3540 } else { | |
| 3541 // The original sleep() implementation did not create an | |
| 3542 // OSThreadWaitState helper for sleeps of 0 milliseconds. | |
| 3543 // I'm preserving that decision for now. | |
| 3544 OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */); | |
| 3545 | |
| 3546 ret_code = os_sleep(millis, interruptible); | |
| 3547 } | |
| 3548 | |
| 3549 // were we externally suspended while we were waiting? | |
| 3550 jt->check_and_wait_while_suspended(); | |
| 3551 | |
| 3552 return ret_code; | |
| 3553 } | |
| 3554 | |
| 3555 // non-JavaThread from this point on: | |
| 3556 | |
| 3557 if (millis <= 0) { | |
| 3558 thr_yield(); | |
| 3559 return 0; | |
| 3560 } | |
| 3561 | |
| 3562 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
| 3563 | |
| 3564 return os_sleep(millis, interruptible); | |
| 3565 } | |
| 3566 | |
| 3567 int os::naked_sleep() { | |
| 3568 // %% make the sleep time an integer flag. for now use 1 millisec. | |
| 3569 return os_sleep(1, false); | |
| 3570 } | |
| 3571 | |
| 3572 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
| 3573 void os::infinite_sleep() { | |
| 3574 while (true) { // sleep forever ... | |
| 3575 ::sleep(100); // ... 100 seconds at a time | |
| 3576 } | |
| 3577 } | |
| 3578 | |
| 3579 // Used to convert frequent JVM_Yield() to nops | |
| 3580 bool os::dont_yield() { | |
| 3581 if (DontYieldALot) { | |
| 3582 static hrtime_t last_time = 0; | |
| 3583 hrtime_t diff = getTimeNanos() - last_time; | |
| 3584 | |
| 3585 if (diff < DontYieldALotInterval * 1000000) | |
| 3586 return true; | |
| 3587 | |
| 3588 last_time += diff; | |
| 3589 | |
| 3590 return false; | |
| 3591 } | |
| 3592 else { | |
| 3593 return false; | |
| 3594 } | |
| 3595 } | |
| 3596 | |
| 3597 // Caveat: Solaris os::yield() causes a thread-state transition whereas | |
| 3598 // the linux and win32 implementations do not. This should be checked. | |
| 3599 | |
| 3600 void os::yield() { | |
| 3601 // Yields to all threads with same or greater priority | |
| 3602 os::sleep(Thread::current(), 0, false); | |
| 3603 } | |
| 3604 | |
| 3605 // Note that yield semantics are defined by the scheduling class to which | |
| 3606 // the thread currently belongs. Typically, yield will _not yield to | |
| 3607 // other equal or higher priority threads that reside on the dispatch queues | |
| 3608 // of other CPUs. | |
| 3609 | |
| 3610 os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; } | |
| 3611 | |
| 3612 | |
| 3613 // On Solaris we found that yield_all doesn't always yield to all other threads. | |
| 3614 // There have been cases where there is a thread ready to execute but it doesn't | |
| 3615 // get an lwp as the VM thread continues to spin with sleeps of 1 millisecond. | |
| 3616 // The 1 millisecond wait doesn't seem long enough for the kernel to issue a | |
| 3617 // SIGWAITING signal which will cause a new lwp to be created. So we count the | |
| 3618 // number of times yield_all is called in the one loop and increase the sleep | |
| 3619 // time after 8 attempts. If this fails too we increase the concurrency level | |
| 3620 // so that the starving thread would get an lwp | |
| 3621 | |
| 3622 void os::yield_all(int attempts) { | |
| 3623 // Yields to all threads, including threads with lower priorities | |
| 3624 if (attempts == 0) { | |
| 3625 os::sleep(Thread::current(), 1, false); | |
| 3626 } else { | |
| 3627 int iterations = attempts % 30; | |
| 3628 if (iterations == 0 && !os::Solaris::T2_libthread()) { | |
| 3629 // thr_setconcurrency and _getconcurrency make sense only under T1. | |
| 3630 int noofLWPS = thr_getconcurrency(); | |
| 3631 if (noofLWPS < (Threads::number_of_threads() + 2)) { | |
| 3632 thr_setconcurrency(thr_getconcurrency() + 1); | |
| 3633 } | |
| 3634 } else if (iterations < 25) { | |
| 3635 os::sleep(Thread::current(), 1, false); | |
| 3636 } else { | |
| 3637 os::sleep(Thread::current(), 10, false); | |
| 3638 } | |
| 3639 } | |
| 3640 } | |
| 3641 | |
| 3642 // Called from the tight loops to possibly influence time-sharing heuristics | |
| 3643 void os::loop_breaker(int attempts) { | |
| 3644 os::yield_all(attempts); | |
| 3645 } | |
| 3646 | |
| 3647 | |
| 3648 // Interface for setting lwp priorities. If we are using T2 libthread, | |
| 3649 // which forces the use of BoundThreads or we manually set UseBoundThreads, | |
| 3650 // all of our threads will be assigned to real lwp's. Using the thr_setprio | |
| 3651 // function is meaningless in this mode so we must adjust the real lwp's priority | |
| 3652 // The routines below implement the getting and setting of lwp priorities. | |
| 3653 // | |
| 3654 // Note: There are three priority scales used on Solaris. Java priotities | |
| 3655 // which range from 1 to 10, libthread "thr_setprio" scale which range | |
| 3656 // from 0 to 127, and the current scheduling class of the process we | |
| 3657 // are running in. This is typically from -60 to +60. | |
| 3658 // The setting of the lwp priorities in done after a call to thr_setprio | |
| 3659 // so Java priorities are mapped to libthread priorities and we map from | |
| 3660 // the latter to lwp priorities. We don't keep priorities stored in | |
| 3661 // Java priorities since some of our worker threads want to set priorities | |
| 3662 // higher than all Java threads. | |
| 3663 // | |
| 3664 // For related information: | |
| 3665 // (1) man -s 2 priocntl | |
| 3666 // (2) man -s 4 priocntl | |
| 3667 // (3) man dispadmin | |
| 3668 // = librt.so | |
| 3669 // = libthread/common/rtsched.c - thrp_setlwpprio(). | |
| 3670 // = ps -cL <pid> ... to validate priority. | |
| 3671 // = sched_get_priority_min and _max | |
| 3672 // pthread_create | |
| 3673 // sched_setparam | |
| 3674 // pthread_setschedparam | |
| 3675 // | |
| 3676 // Assumptions: | |
| 3677 // + We assume that all threads in the process belong to the same | |
| 3678 // scheduling class. IE. an homogenous process. | |
| 3679 // + Must be root or in IA group to change change "interactive" attribute. | |
| 3680 // Priocntl() will fail silently. The only indication of failure is when | |
| 3681 // we read-back the value and notice that it hasn't changed. | |
| 3682 // + Interactive threads enter the runq at the head, non-interactive at the tail. | |
| 3683 // + For RT, change timeslice as well. Invariant: | |
| 3684 // constant "priority integral" | |
| 3685 // Konst == TimeSlice * (60-Priority) | |
| 3686 // Given a priority, compute appropriate timeslice. | |
| 3687 // + Higher numerical values have higher priority. | |
| 3688 | |
| 3689 // sched class attributes | |
| 3690 typedef struct { | |
| 3691 int schedPolicy; // classID | |
| 3692 int maxPrio; | |
| 3693 int minPrio; | |
| 3694 } SchedInfo; | |
| 3695 | |
| 3696 | |
|
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|
3697 static SchedInfo tsLimits, iaLimits, rtLimits, fxLimits; |
| 0 | 3698 |
| 3699 #ifdef ASSERT | |
| 3700 static int ReadBackValidate = 1; | |
| 3701 #endif | |
| 3702 static int myClass = 0; | |
| 3703 static int myMin = 0; | |
| 3704 static int myMax = 0; | |
| 3705 static int myCur = 0; | |
| 3706 static bool priocntl_enable = false; | |
| 3707 | |
|
4854
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4803
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|
3708 static const int criticalPrio = 60; // FX/60 is critical thread class/priority on T4 |
|
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|
3709 static int java_MaxPriority_to_os_priority = 0; // Saved mapping |
| 0 | 3710 |
| 3711 // Call the version of priocntl suitable for all supported versions | |
| 3712 // of Solaris. We need to call through this wrapper so that we can | |
| 3713 // build on Solaris 9 and run on Solaris 8, 9 and 10. | |
| 3714 // | |
| 3715 // This code should be removed if we ever stop supporting Solaris 8 | |
| 3716 // and earlier releases. | |
| 3717 | |
| 3718 static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg); | |
| 3719 typedef long (*priocntl_type)(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg); | |
| 3720 static priocntl_type priocntl_ptr = priocntl_stub; | |
| 3721 | |
| 3722 // Stub to set the value of the real pointer, and then call the real | |
| 3723 // function. | |
| 3724 | |
| 3725 static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg) { | |
| 3726 // Try Solaris 8- name only. | |
| 3727 priocntl_type tmp = (priocntl_type)dlsym(RTLD_DEFAULT, "__priocntl"); | |
| 3728 guarantee(tmp != NULL, "priocntl function not found."); | |
| 3729 priocntl_ptr = tmp; | |
| 3730 return (*priocntl_ptr)(PC_VERSION, idtype, id, cmd, arg); | |
| 3731 } | |
| 3732 | |
| 3733 | |
| 3734 // lwp_priocntl_init | |
| 3735 // | |
| 3736 // Try to determine the priority scale for our process. | |
| 3737 // | |
| 3738 // Return errno or 0 if OK. | |
| 3739 // | |
| 3740 static | |
| 3741 int lwp_priocntl_init () | |
| 3742 { | |
| 3743 int rslt; | |
| 3744 pcinfo_t ClassInfo; | |
| 3745 pcparms_t ParmInfo; | |
| 3746 int i; | |
| 3747 | |
| 3748 if (!UseThreadPriorities) return 0; | |
| 3749 | |
| 3750 // We are using Bound threads, we need to determine our priority ranges | |
| 3751 if (os::Solaris::T2_libthread() || UseBoundThreads) { | |
| 3752 // If ThreadPriorityPolicy is 1, switch tables | |
| 3753 if (ThreadPriorityPolicy == 1) { | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3754 for (i = 0 ; i < CriticalPriority+1; i++) |
| 0 | 3755 os::java_to_os_priority[i] = prio_policy1[i]; |
| 3756 } | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3757 if (UseCriticalJavaThreadPriority) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3758 // MaxPriority always maps to the FX scheduling class and criticalPrio. |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3759 // See set_native_priority() and set_lwp_class_and_priority(). |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3760 // Save original MaxPriority mapping in case attempt to |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3761 // use critical priority fails. |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3762 java_MaxPriority_to_os_priority = os::java_to_os_priority[MaxPriority]; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3763 // Set negative to distinguish from other priorities |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3764 os::java_to_os_priority[MaxPriority] = -criticalPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3765 } |
| 0 | 3766 } |
| 3767 // Not using Bound Threads, set to ThreadPolicy 1 | |
| 3768 else { | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3769 for ( i = 0 ; i < CriticalPriority+1; i++ ) { |
| 0 | 3770 os::java_to_os_priority[i] = prio_policy1[i]; |
| 3771 } | |
| 3772 return 0; | |
| 3773 } | |
| 3774 | |
| 3775 // Get IDs for a set of well-known scheduling classes. | |
| 3776 // TODO-FIXME: GETCLINFO returns the current # of classes in the | |
| 3777 // the system. We should have a loop that iterates over the | |
| 3778 // classID values, which are known to be "small" integers. | |
| 3779 | |
| 3780 strcpy(ClassInfo.pc_clname, "TS"); | |
| 3781 ClassInfo.pc_cid = -1; | |
| 3782 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); | |
| 3783 if (rslt < 0) return errno; | |
| 3784 assert(ClassInfo.pc_cid != -1, "cid for TS class is -1"); | |
| 3785 tsLimits.schedPolicy = ClassInfo.pc_cid; | |
| 3786 tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri; | |
| 3787 tsLimits.minPrio = -tsLimits.maxPrio; | |
| 3788 | |
| 3789 strcpy(ClassInfo.pc_clname, "IA"); | |
| 3790 ClassInfo.pc_cid = -1; | |
| 3791 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); | |
| 3792 if (rslt < 0) return errno; | |
| 3793 assert(ClassInfo.pc_cid != -1, "cid for IA class is -1"); | |
| 3794 iaLimits.schedPolicy = ClassInfo.pc_cid; | |
| 3795 iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri; | |
| 3796 iaLimits.minPrio = -iaLimits.maxPrio; | |
| 3797 | |
| 3798 strcpy(ClassInfo.pc_clname, "RT"); | |
| 3799 ClassInfo.pc_cid = -1; | |
| 3800 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); | |
| 3801 if (rslt < 0) return errno; | |
| 3802 assert(ClassInfo.pc_cid != -1, "cid for RT class is -1"); | |
| 3803 rtLimits.schedPolicy = ClassInfo.pc_cid; | |
| 3804 rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri; | |
| 3805 rtLimits.minPrio = 0; | |
| 3806 | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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diff
changeset
|
3807 strcpy(ClassInfo.pc_clname, "FX"); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3808 ClassInfo.pc_cid = -1; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3809 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3810 if (rslt < 0) return errno; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3811 assert(ClassInfo.pc_cid != -1, "cid for FX class is -1"); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3812 fxLimits.schedPolicy = ClassInfo.pc_cid; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3813 fxLimits.maxPrio = ((fxinfo_t*)ClassInfo.pc_clinfo)->fx_maxupri; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3814 fxLimits.minPrio = 0; |
| 0 | 3815 |
| 3816 // Query our "current" scheduling class. | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3817 // This will normally be IA, TS or, rarely, FX or RT. |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3818 memset(&ParmInfo, 0, sizeof(ParmInfo)); |
| 0 | 3819 ParmInfo.pc_cid = PC_CLNULL; |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3820 rslt = (*priocntl_ptr) (PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3821 if (rslt < 0) return errno; |
| 0 | 3822 myClass = ParmInfo.pc_cid; |
| 3823 | |
| 3824 // We now know our scheduling classId, get specific information | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3825 // about the class. |
| 0 | 3826 ClassInfo.pc_cid = myClass; |
| 3827 ClassInfo.pc_clname[0] = 0; | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3828 rslt = (*priocntl_ptr) (PC_VERSION, (idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3829 if (rslt < 0) return errno; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3830 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3831 if (ThreadPriorityVerbose) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3832 tty->print_cr("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3833 } |
| 0 | 3834 |
| 3835 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
| 3836 ParmInfo.pc_cid = PC_CLNULL; | |
| 3837 rslt = (*priocntl_ptr)(PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); | |
| 3838 if (rslt < 0) return errno; | |
| 3839 | |
| 3840 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
| 3841 myMin = rtLimits.minPrio; | |
| 3842 myMax = rtLimits.maxPrio; | |
| 3843 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
| 3844 iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms; | |
| 3845 myMin = iaLimits.minPrio; | |
| 3846 myMax = iaLimits.maxPrio; | |
| 3847 myMax = MIN2(myMax, (int)iaInfo->ia_uprilim); // clamp - restrict | |
| 3848 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
| 3849 tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms; | |
| 3850 myMin = tsLimits.minPrio; | |
| 3851 myMax = tsLimits.maxPrio; | |
| 3852 myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3853 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3854 fxparms_t *fxInfo = (fxparms_t*)ParmInfo.pc_clparms; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3855 myMin = fxLimits.minPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3856 myMax = fxLimits.maxPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3857 myMax = MIN2(myMax, (int)fxInfo->fx_uprilim); // clamp - restrict |
| 0 | 3858 } else { |
| 3859 // No clue - punt | |
| 3860 if (ThreadPriorityVerbose) | |
| 3861 tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname); | |
| 3862 return EINVAL; // no clue, punt | |
| 3863 } | |
| 3864 | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3865 if (ThreadPriorityVerbose) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3866 tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3867 } |
| 0 | 3868 |
| 3869 priocntl_enable = true; // Enable changing priorities | |
| 3870 return 0; | |
| 3871 } | |
| 3872 | |
| 3873 #define IAPRI(x) ((iaparms_t *)((x).pc_clparms)) | |
| 3874 #define RTPRI(x) ((rtparms_t *)((x).pc_clparms)) | |
| 3875 #define TSPRI(x) ((tsparms_t *)((x).pc_clparms)) | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3876 #define FXPRI(x) ((fxparms_t *)((x).pc_clparms)) |
| 0 | 3877 |
| 3878 | |
| 3879 // scale_to_lwp_priority | |
| 3880 // | |
| 3881 // Convert from the libthread "thr_setprio" scale to our current | |
| 3882 // lwp scheduling class scale. | |
| 3883 // | |
| 3884 static | |
| 3885 int scale_to_lwp_priority (int rMin, int rMax, int x) | |
| 3886 { | |
| 3887 int v; | |
| 3888 | |
| 3889 if (x == 127) return rMax; // avoid round-down | |
| 3890 v = (((x*(rMax-rMin)))/128)+rMin; | |
| 3891 return v; | |
| 3892 } | |
| 3893 | |
| 3894 | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3895 // set_lwp_class_and_priority |
| 0 | 3896 // |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3897 // Set the class and priority of the lwp. This call should only |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3898 // be made when using bound threads (T2 threads are bound by default). |
| 0 | 3899 // |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3900 int set_lwp_class_and_priority(int ThreadID, int lwpid, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3901 int newPrio, int new_class, bool scale) { |
| 0 | 3902 int rslt; |
| 3903 int Actual, Expected, prv; | |
| 3904 pcparms_t ParmInfo; // for GET-SET | |
| 3905 #ifdef ASSERT | |
| 3906 pcparms_t ReadBack; // for readback | |
| 3907 #endif | |
| 3908 | |
| 3909 // Set priority via PC_GETPARMS, update, PC_SETPARMS | |
| 3910 // Query current values. | |
| 3911 // TODO: accelerate this by eliminating the PC_GETPARMS call. | |
| 3912 // Cache "pcparms_t" in global ParmCache. | |
| 3913 // TODO: elide set-to-same-value | |
| 3914 | |
| 3915 // If something went wrong on init, don't change priorities. | |
| 3916 if ( !priocntl_enable ) { | |
| 3917 if (ThreadPriorityVerbose) | |
| 3918 tty->print_cr("Trying to set priority but init failed, ignoring"); | |
| 3919 return EINVAL; | |
| 3920 } | |
| 3921 | |
| 3922 // If lwp hasn't started yet, just return | |
| 3923 // the _start routine will call us again. | |
| 3924 if ( lwpid <= 0 ) { | |
| 3925 if (ThreadPriorityVerbose) { | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3926 tty->print_cr ("deferring the set_lwp_class_and_priority of thread " |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3927 INTPTR_FORMAT " to %d, lwpid not set", |
| 0 | 3928 ThreadID, newPrio); |
| 3929 } | |
| 3930 return 0; | |
| 3931 } | |
| 3932 | |
| 3933 if (ThreadPriorityVerbose) { | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3934 tty->print_cr ("set_lwp_class_and_priority(" |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3935 INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ", |
| 0 | 3936 ThreadID, lwpid, newPrio); |
| 3937 } | |
| 3938 | |
| 3939 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
| 3940 ParmInfo.pc_cid = PC_CLNULL; | |
| 3941 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo); | |
| 3942 if (rslt < 0) return errno; | |
| 3943 | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3944 int cur_class = ParmInfo.pc_cid; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3945 ParmInfo.pc_cid = (id_t)new_class; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3946 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3947 if (new_class == rtLimits.schedPolicy) { |
| 0 | 3948 rtparms_t *rtInfo = (rtparms_t*)ParmInfo.pc_clparms; |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3949 rtInfo->rt_pri = scale ? scale_to_lwp_priority(rtLimits.minPrio, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3950 rtLimits.maxPrio, newPrio) |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3951 : newPrio; |
| 0 | 3952 rtInfo->rt_tqsecs = RT_NOCHANGE; |
| 3953 rtInfo->rt_tqnsecs = RT_NOCHANGE; | |
| 3954 if (ThreadPriorityVerbose) { | |
| 3955 tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri); | |
| 3956 } | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3957 } else if (new_class == iaLimits.schedPolicy) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3958 iaparms_t* iaInfo = (iaparms_t*)ParmInfo.pc_clparms; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3959 int maxClamped = MIN2(iaLimits.maxPrio, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3960 cur_class == new_class |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3961 ? (int)iaInfo->ia_uprilim : iaLimits.maxPrio); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3962 iaInfo->ia_upri = scale ? scale_to_lwp_priority(iaLimits.minPrio, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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diff
changeset
|
3963 maxClamped, newPrio) |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3964 : newPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3965 iaInfo->ia_uprilim = cur_class == new_class |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3966 ? IA_NOCHANGE : (pri_t)iaLimits.maxPrio; |
| 0 | 3967 iaInfo->ia_mode = IA_NOCHANGE; |
| 3968 if (ThreadPriorityVerbose) { | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3969 tty->print_cr("IA: [%d...%d] %d->%d\n", |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
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diff
changeset
|
3970 iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri); |
| 0 | 3971 } |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3972 } else if (new_class == tsLimits.schedPolicy) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3973 tsparms_t* tsInfo = (tsparms_t*)ParmInfo.pc_clparms; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3974 int maxClamped = MIN2(tsLimits.maxPrio, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3975 cur_class == new_class |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3976 ? (int)tsInfo->ts_uprilim : tsLimits.maxPrio); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
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diff
changeset
|
3977 tsInfo->ts_upri = scale ? scale_to_lwp_priority(tsLimits.minPrio, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
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diff
changeset
|
3978 maxClamped, newPrio) |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
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diff
changeset
|
3979 : newPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
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diff
changeset
|
3980 tsInfo->ts_uprilim = cur_class == new_class |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
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diff
changeset
|
3981 ? TS_NOCHANGE : (pri_t)tsLimits.maxPrio; |
| 0 | 3982 if (ThreadPriorityVerbose) { |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3983 tty->print_cr("TS: [%d...%d] %d->%d\n", |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3984 tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri); |
| 0 | 3985 } |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3986 } else if (new_class == fxLimits.schedPolicy) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3987 fxparms_t* fxInfo = (fxparms_t*)ParmInfo.pc_clparms; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3988 int maxClamped = MIN2(fxLimits.maxPrio, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3989 cur_class == new_class |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3990 ? (int)fxInfo->fx_uprilim : fxLimits.maxPrio); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3991 fxInfo->fx_upri = scale ? scale_to_lwp_priority(fxLimits.minPrio, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3992 maxClamped, newPrio) |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3993 : newPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3994 fxInfo->fx_uprilim = cur_class == new_class |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3995 ? FX_NOCHANGE : (pri_t)fxLimits.maxPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3996 fxInfo->fx_tqsecs = FX_NOCHANGE; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3997 fxInfo->fx_tqnsecs = FX_NOCHANGE; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3998 if (ThreadPriorityVerbose) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3999 tty->print_cr("FX: [%d...%d] %d->%d\n", |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4000 fxLimits.minPrio, maxClamped, newPrio, fxInfo->fx_upri); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4001 } |
| 0 | 4002 } else { |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4003 if (ThreadPriorityVerbose) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4004 tty->print_cr("Unknown new scheduling class %d\n", new_class); |
| 0 | 4005 } |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4006 return EINVAL; // no clue, punt |
| 0 | 4007 } |
| 4008 | |
| 4009 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo); | |
| 4010 if (ThreadPriorityVerbose && rslt) { | |
| 4011 tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno); | |
| 4012 } | |
| 4013 if (rslt < 0) return errno; | |
| 4014 | |
| 4015 #ifdef ASSERT | |
| 4016 // Sanity check: read back what we just attempted to set. | |
| 4017 // In theory it could have changed in the interim ... | |
| 4018 // | |
| 4019 // The priocntl system call is tricky. | |
| 4020 // Sometimes it'll validate the priority value argument and | |
| 4021 // return EINVAL if unhappy. At other times it fails silently. | |
| 4022 // Readbacks are prudent. | |
| 4023 | |
| 4024 if (!ReadBackValidate) return 0; | |
| 4025 | |
| 4026 memset(&ReadBack, 0, sizeof(pcparms_t)); | |
| 4027 ReadBack.pc_cid = PC_CLNULL; | |
| 4028 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack); | |
| 4029 assert(rslt >= 0, "priocntl failed"); | |
| 4030 Actual = Expected = 0xBAD; | |
| 4031 assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match"); | |
| 4032 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
| 4033 Actual = RTPRI(ReadBack)->rt_pri; | |
| 4034 Expected = RTPRI(ParmInfo)->rt_pri; | |
| 4035 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
| 4036 Actual = IAPRI(ReadBack)->ia_upri; | |
| 4037 Expected = IAPRI(ParmInfo)->ia_upri; | |
| 4038 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
| 4039 Actual = TSPRI(ReadBack)->ts_upri; | |
| 4040 Expected = TSPRI(ParmInfo)->ts_upri; | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4041 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4042 Actual = FXPRI(ReadBack)->fx_upri; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4043 Expected = FXPRI(ParmInfo)->fx_upri; |
| 0 | 4044 } else { |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4045 if (ThreadPriorityVerbose) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4046 tty->print_cr("set_lwp_class_and_priority: unexpected class in readback: %d\n", |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4047 ParmInfo.pc_cid); |
| 0 | 4048 } |
| 4049 } | |
| 4050 | |
| 4051 if (Actual != Expected) { | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4052 if (ThreadPriorityVerbose) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4053 tty->print_cr ("set_lwp_class_and_priority(%d %d) Class=%d: actual=%d vs expected=%d\n", |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4054 lwpid, newPrio, ReadBack.pc_cid, Actual, Expected); |
| 0 | 4055 } |
| 4056 } | |
| 4057 #endif | |
| 4058 | |
| 4059 return 0; | |
| 4060 } | |
| 4061 | |
| 4062 // Solaris only gives access to 128 real priorities at a time, | |
| 4063 // so we expand Java's ten to fill this range. This would be better | |
| 4064 // if we dynamically adjusted relative priorities. | |
| 4065 // | |
| 4066 // The ThreadPriorityPolicy option allows us to select 2 different | |
| 4067 // priority scales. | |
| 4068 // | |
| 4069 // ThreadPriorityPolicy=0 | |
| 4070 // Since the Solaris' default priority is MaximumPriority, we do not | |
| 4071 // set a priority lower than Max unless a priority lower than | |
| 4072 // NormPriority is requested. | |
| 4073 // | |
| 4074 // ThreadPriorityPolicy=1 | |
| 4075 // This mode causes the priority table to get filled with | |
| 4076 // linear values. NormPriority get's mapped to 50% of the | |
| 4077 // Maximum priority an so on. This will cause VM threads | |
| 4078 // to get unfair treatment against other Solaris processes | |
| 4079 // which do not explicitly alter their thread priorities. | |
| 4080 // | |
| 4081 | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4082 int os::java_to_os_priority[CriticalPriority + 1] = { |
| 0 | 4083 -99999, // 0 Entry should never be used |
| 4084 | |
| 4085 0, // 1 MinPriority | |
| 4086 32, // 2 | |
| 4087 64, // 3 | |
| 4088 | |
| 4089 96, // 4 | |
| 4090 127, // 5 NormPriority | |
| 4091 127, // 6 | |
| 4092 | |
| 4093 127, // 7 | |
| 4094 127, // 8 | |
| 4095 127, // 9 NearMaxPriority | |
| 4096 | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4097 127, // 10 MaxPriority |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4098 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4099 -criticalPrio // 11 CriticalPriority |
| 0 | 4100 }; |
| 4101 | |
| 4102 OSReturn os::set_native_priority(Thread* thread, int newpri) { | |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4103 OSThread* osthread = thread->osthread(); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4104 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4105 // Save requested priority in case the thread hasn't been started |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4106 osthread->set_native_priority(newpri); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4107 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4108 // Check for critical priority request |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4109 bool fxcritical = false; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4110 if (newpri == -criticalPrio) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4111 fxcritical = true; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4112 newpri = criticalPrio; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4113 } |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4114 |
| 0 | 4115 assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping"); |
|
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4116 if (!UseThreadPriorities) return OS_OK; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4117 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4118 int status = 0; |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4119 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4120 if (!fxcritical) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4121 // Use thr_setprio only if we have a priority that thr_setprio understands |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4122 status = thr_setprio(thread->osthread()->thread_id(), newpri); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4123 } |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4124 |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4125 if (os::Solaris::T2_libthread() || |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4126 (UseBoundThreads && osthread->is_vm_created())) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4127 int lwp_status = |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4128 set_lwp_class_and_priority(osthread->thread_id(), |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4129 osthread->lwp_id(), |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4130 newpri, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4131 fxcritical ? fxLimits.schedPolicy : myClass, |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4132 !fxcritical); |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4133 if (lwp_status != 0 && fxcritical) { |
|
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
4134 // Try again, this time without changing the scheduling class |
|
de268c8a8075
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|
4135 newpri = java_MaxPriority_to_os_priority; |
|
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changeset
|
4136 lwp_status = set_lwp_class_and_priority(osthread->thread_id(), |
|
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diff
changeset
|
4137 osthread->lwp_id(), |
|
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diff
changeset
|
4138 newpri, myClass, false); |
|
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diff
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|
4139 } |
|
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|
4140 status |= lwp_status; |
|
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|
4141 } |
| 0 | 4142 return (status == 0) ? OS_OK : OS_ERR; |
| 4143 } | |
| 4144 | |
| 4145 | |
| 4146 OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) { | |
| 4147 int p; | |
| 4148 if ( !UseThreadPriorities ) { | |
| 4149 *priority_ptr = NormalPriority; | |
| 4150 return OS_OK; | |
| 4151 } | |
| 4152 int status = thr_getprio(thread->osthread()->thread_id(), &p); | |
| 4153 if (status != 0) { | |
| 4154 return OS_ERR; | |
| 4155 } | |
| 4156 *priority_ptr = p; | |
| 4157 return OS_OK; | |
| 4158 } | |
| 4159 | |
| 4160 | |
| 4161 // Hint to the underlying OS that a task switch would not be good. | |
| 4162 // Void return because it's a hint and can fail. | |
| 4163 void os::hint_no_preempt() { | |
| 4164 schedctl_start(schedctl_init()); | |
| 4165 } | |
| 4166 | |
| 4167 void os::interrupt(Thread* thread) { | |
| 4168 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
| 4169 | |
| 4170 OSThread* osthread = thread->osthread(); | |
| 4171 | |
| 4172 int isInterrupted = osthread->interrupted(); | |
| 4173 if (!isInterrupted) { | |
| 4174 osthread->set_interrupted(true); | |
| 4175 OrderAccess::fence(); | |
| 4176 // os::sleep() is implemented with either poll (NULL,0,timeout) or | |
| 4177 // by parking on _SleepEvent. If the former, thr_kill will unwedge | |
| 4178 // the sleeper by SIGINTR, otherwise the unpark() will wake the sleeper. | |
| 4179 ParkEvent * const slp = thread->_SleepEvent ; | |
| 4180 if (slp != NULL) slp->unpark() ; | |
| 4181 } | |
| 4182 | |
| 4183 // For JSR166: unpark after setting status but before thr_kill -dl | |
| 4184 if (thread->is_Java_thread()) { | |
| 4185 ((JavaThread*)thread)->parker()->unpark(); | |
| 4186 } | |
| 4187 | |
| 4188 // Handle interruptible wait() ... | |
| 4189 ParkEvent * const ev = thread->_ParkEvent ; | |
| 4190 if (ev != NULL) ev->unpark() ; | |
| 4191 | |
| 4192 // When events are used everywhere for os::sleep, then this thr_kill | |
| 4193 // will only be needed if UseVMInterruptibleIO is true. | |
| 4194 | |
| 4195 if (!isInterrupted) { | |
| 4196 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGinterrupt()); | |
| 4197 assert_status(status == 0, status, "thr_kill"); | |
| 4198 | |
| 4199 // Bump thread interruption counter | |
| 4200 RuntimeService::record_thread_interrupt_signaled_count(); | |
| 4201 } | |
| 4202 } | |
| 4203 | |
| 4204 | |
| 4205 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
| 4206 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
| 4207 | |
| 4208 OSThread* osthread = thread->osthread(); | |
| 4209 | |
| 4210 bool res = osthread->interrupted(); | |
| 4211 | |
| 4212 // NOTE that since there is no "lock" around these two operations, | |
| 4213 // there is the possibility that the interrupted flag will be | |
| 4214 // "false" but that the interrupt event will be set. This is | |
| 4215 // intentional. The effect of this is that Object.wait() will appear | |
| 4216 // to have a spurious wakeup, which is not harmful, and the | |
| 4217 // possibility is so rare that it is not worth the added complexity | |
| 4218 // to add yet another lock. It has also been recommended not to put | |
| 4219 // the interrupted flag into the os::Solaris::Event structure, | |
| 4220 // because it hides the issue. | |
| 4221 if (res && clear_interrupted) { | |
| 4222 osthread->set_interrupted(false); | |
| 4223 } | |
| 4224 return res; | |
| 4225 } | |
| 4226 | |
| 4227 | |
| 4228 void os::print_statistics() { | |
| 4229 } | |
| 4230 | |
| 4231 int os::message_box(const char* title, const char* message) { | |
| 4232 int i; | |
| 4233 fdStream err(defaultStream::error_fd()); | |
| 4234 for (i = 0; i < 78; i++) err.print_raw("="); | |
| 4235 err.cr(); | |
| 4236 err.print_raw_cr(title); | |
| 4237 for (i = 0; i < 78; i++) err.print_raw("-"); | |
| 4238 err.cr(); | |
| 4239 err.print_raw_cr(message); | |
| 4240 for (i = 0; i < 78; i++) err.print_raw("="); | |
| 4241 err.cr(); | |
| 4242 | |
| 4243 char buf[16]; | |
| 4244 // Prevent process from exiting upon "read error" without consuming all CPU | |
| 4245 while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } | |
| 4246 | |
| 4247 return buf[0] == 'y' || buf[0] == 'Y'; | |
| 4248 } | |
| 4249 | |
| 4250 // A lightweight implementation that does not suspend the target thread and | |
| 4251 // thus returns only a hint. Used for profiling only! | |
| 4252 ExtendedPC os::get_thread_pc(Thread* thread) { | |
| 4253 // Make sure that it is called by the watcher and the Threads lock is owned. | |
| 4254 assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock"); | |
| 4255 // For now, is only used to profile the VM Thread | |
| 4256 assert(thread->is_VM_thread(), "Can only be called for VMThread"); | |
| 4257 ExtendedPC epc; | |
| 4258 | |
| 4259 GetThreadPC_Callback cb(ProfileVM_lock); | |
| 4260 OSThread *osthread = thread->osthread(); | |
| 4261 const int time_to_wait = 400; // 400ms wait for initial response | |
| 4262 int status = cb.interrupt(thread, time_to_wait); | |
| 4263 | |
| 4264 if (cb.is_done() ) { | |
| 4265 epc = cb.addr(); | |
| 4266 } else { | |
| 4267 DEBUG_ONLY(tty->print_cr("Failed to get pc for thread: %d got %d status", | |
| 4268 osthread->thread_id(), status);); | |
| 4269 // epc is already NULL | |
| 4270 } | |
| 4271 return epc; | |
| 4272 } | |
| 4273 | |
| 4274 | |
| 4275 // This does not do anything on Solaris. This is basically a hook for being | |
| 4276 // able to use structured exception handling (thread-local exception filters) on, e.g., Win32. | |
| 4277 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) { | |
| 4278 f(value, method, args, thread); | |
| 4279 } | |
| 4280 | |
| 4281 // This routine may be used by user applications as a "hook" to catch signals. | |
| 4282 // The user-defined signal handler must pass unrecognized signals to this | |
| 4283 // routine, and if it returns true (non-zero), then the signal handler must | |
| 4284 // return immediately. If the flag "abort_if_unrecognized" is true, then this | |
| 4285 // routine will never retun false (zero), but instead will execute a VM panic | |
| 4286 // routine kill the process. | |
| 4287 // | |
| 4288 // If this routine returns false, it is OK to call it again. This allows | |
| 4289 // the user-defined signal handler to perform checks either before or after | |
| 4290 // the VM performs its own checks. Naturally, the user code would be making | |
| 4291 // a serious error if it tried to handle an exception (such as a null check | |
| 4292 // or breakpoint) that the VM was generating for its own correct operation. | |
| 4293 // | |
| 4294 // This routine may recognize any of the following kinds of signals: | |
| 4295 // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ, | |
| 4296 // os::Solaris::SIGasync | |
| 4297 // It should be consulted by handlers for any of those signals. | |
| 4298 // It explicitly does not recognize os::Solaris::SIGinterrupt | |
| 4299 // | |
| 4300 // The caller of this routine must pass in the three arguments supplied | |
| 4301 // to the function referred to in the "sa_sigaction" (not the "sa_handler") | |
| 4302 // field of the structure passed to sigaction(). This routine assumes that | |
| 4303 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. | |
| 4304 // | |
| 4305 // Note that the VM will print warnings if it detects conflicting signal | |
| 4306 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". | |
| 4307 // | |
| 2191 | 4308 extern "C" JNIEXPORT int |
| 4309 JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, | |
| 4310 int abort_if_unrecognized); | |
| 0 | 4311 |
| 4312 | |
| 4313 void signalHandler(int sig, siginfo_t* info, void* ucVoid) { | |
| 8067 | 4314 int orig_errno = errno; // Preserve errno value over signal handler. |
| 0 | 4315 JVM_handle_solaris_signal(sig, info, ucVoid, true); |
| 8067 | 4316 errno = orig_errno; |
| 0 | 4317 } |
| 4318 | |
| 4319 /* Do not delete - if guarantee is ever removed, a signal handler (even empty) | |
| 4320 is needed to provoke threads blocked on IO to return an EINTR | |
| 4321 Note: this explicitly does NOT call JVM_handle_solaris_signal and | |
| 4322 does NOT participate in signal chaining due to requirement for | |
| 4323 NOT setting SA_RESTART to make EINTR work. */ | |
| 4324 extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) { | |
| 4325 if (UseSignalChaining) { | |
| 4326 struct sigaction *actp = os::Solaris::get_chained_signal_action(sig); | |
| 4327 if (actp && actp->sa_handler) { | |
| 4328 vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs"); | |
| 4329 } | |
| 4330 } | |
| 4331 } | |
| 4332 | |
| 4333 // This boolean allows users to forward their own non-matching signals | |
| 4334 // to JVM_handle_solaris_signal, harmlessly. | |
| 4335 bool os::Solaris::signal_handlers_are_installed = false; | |
| 4336 | |
| 4337 // For signal-chaining | |
| 4338 bool os::Solaris::libjsig_is_loaded = false; | |
| 4339 typedef struct sigaction *(*get_signal_t)(int); | |
| 4340 get_signal_t os::Solaris::get_signal_action = NULL; | |
| 4341 | |
| 4342 struct sigaction* os::Solaris::get_chained_signal_action(int sig) { | |
| 4343 struct sigaction *actp = NULL; | |
| 4344 | |
| 4345 if ((libjsig_is_loaded) && (sig <= Maxlibjsigsigs)) { | |
| 4346 // Retrieve the old signal handler from libjsig | |
| 4347 actp = (*get_signal_action)(sig); | |
| 4348 } | |
| 4349 if (actp == NULL) { | |
| 4350 // Retrieve the preinstalled signal handler from jvm | |
| 4351 actp = get_preinstalled_handler(sig); | |
| 4352 } | |
| 4353 | |
| 4354 return actp; | |
| 4355 } | |
| 4356 | |
| 4357 static bool call_chained_handler(struct sigaction *actp, int sig, | |
| 4358 siginfo_t *siginfo, void *context) { | |
| 4359 // Call the old signal handler | |
| 4360 if (actp->sa_handler == SIG_DFL) { | |
| 4361 // It's more reasonable to let jvm treat it as an unexpected exception | |
| 4362 // instead of taking the default action. | |
| 4363 return false; | |
| 4364 } else if (actp->sa_handler != SIG_IGN) { | |
| 4365 if ((actp->sa_flags & SA_NODEFER) == 0) { | |
| 4366 // automaticlly block the signal | |
| 4367 sigaddset(&(actp->sa_mask), sig); | |
| 4368 } | |
| 4369 | |
| 4370 sa_handler_t hand; | |
| 4371 sa_sigaction_t sa; | |
| 4372 bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; | |
| 4373 // retrieve the chained handler | |
| 4374 if (siginfo_flag_set) { | |
| 4375 sa = actp->sa_sigaction; | |
| 4376 } else { | |
| 4377 hand = actp->sa_handler; | |
| 4378 } | |
| 4379 | |
| 4380 if ((actp->sa_flags & SA_RESETHAND) != 0) { | |
| 4381 actp->sa_handler = SIG_DFL; | |
| 4382 } | |
| 4383 | |
| 4384 // try to honor the signal mask | |
| 4385 sigset_t oset; | |
| 4386 thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset); | |
| 4387 | |
| 4388 // call into the chained handler | |
| 4389 if (siginfo_flag_set) { | |
| 4390 (*sa)(sig, siginfo, context); | |
| 4391 } else { | |
| 4392 (*hand)(sig); | |
| 4393 } | |
| 4394 | |
| 4395 // restore the signal mask | |
| 4396 thr_sigsetmask(SIG_SETMASK, &oset, 0); | |
| 4397 } | |
| 4398 // Tell jvm's signal handler the signal is taken care of. | |
| 4399 return true; | |
| 4400 } | |
| 4401 | |
| 4402 bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) { | |
| 4403 bool chained = false; | |
| 4404 // signal-chaining | |
| 4405 if (UseSignalChaining) { | |
| 4406 struct sigaction *actp = get_chained_signal_action(sig); | |
| 4407 if (actp != NULL) { | |
| 4408 chained = call_chained_handler(actp, sig, siginfo, context); | |
| 4409 } | |
| 4410 } | |
| 4411 return chained; | |
| 4412 } | |
| 4413 | |
| 4414 struct sigaction* os::Solaris::get_preinstalled_handler(int sig) { | |
| 4415 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
| 4416 if (preinstalled_sigs[sig] != 0) { | |
| 4417 return &chainedsigactions[sig]; | |
| 4418 } | |
| 4419 return NULL; | |
| 4420 } | |
| 4421 | |
| 4422 void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) { | |
| 4423 | |
| 4424 assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range"); | |
| 4425 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
| 4426 chainedsigactions[sig] = oldAct; | |
| 4427 preinstalled_sigs[sig] = 1; | |
| 4428 } | |
| 4429 | |
| 4430 void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) { | |
| 4431 // Check for overwrite. | |
| 4432 struct sigaction oldAct; | |
| 4433 sigaction(sig, (struct sigaction*)NULL, &oldAct); | |
| 4434 void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
| 4435 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
| 4436 if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && | |
| 4437 oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && | |
| 4438 oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) { | |
| 4439 if (AllowUserSignalHandlers || !set_installed) { | |
| 4440 // Do not overwrite; user takes responsibility to forward to us. | |
| 4441 return; | |
| 4442 } else if (UseSignalChaining) { | |
| 4443 if (oktochain) { | |
| 4444 // save the old handler in jvm | |
| 4445 save_preinstalled_handler(sig, oldAct); | |
| 4446 } else { | |
| 4447 vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs."); | |
| 4448 } | |
| 4449 // libjsig also interposes the sigaction() call below and saves the | |
| 4450 // old sigaction on it own. | |
| 4451 } else { | |
|
1490
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1353
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changeset
|
4452 fatal(err_msg("Encountered unexpected pre-existing sigaction handler " |
|
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diff
changeset
|
4453 "%#lx for signal %d.", (long)oldhand, sig)); |
| 0 | 4454 } |
| 4455 } | |
| 4456 | |
| 4457 struct sigaction sigAct; | |
| 4458 sigfillset(&(sigAct.sa_mask)); | |
| 4459 sigAct.sa_handler = SIG_DFL; | |
| 4460 | |
| 4461 sigAct.sa_sigaction = signalHandler; | |
| 4462 // Handle SIGSEGV on alternate signal stack if | |
| 4463 // not using stack banging | |
| 4464 if (!UseStackBanging && sig == SIGSEGV) { | |
| 4465 sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK; | |
| 4466 // Interruptible i/o requires SA_RESTART cleared so EINTR | |
| 4467 // is returned instead of restarting system calls | |
| 4468 } else if (sig == os::Solaris::SIGinterrupt()) { | |
| 4469 sigemptyset(&sigAct.sa_mask); | |
| 4470 sigAct.sa_handler = NULL; | |
| 4471 sigAct.sa_flags = SA_SIGINFO; | |
| 4472 sigAct.sa_sigaction = sigINTRHandler; | |
| 4473 } else { | |
| 4474 sigAct.sa_flags = SA_SIGINFO | SA_RESTART; | |
| 4475 } | |
| 4476 os::Solaris::set_our_sigflags(sig, sigAct.sa_flags); | |
| 4477 | |
| 4478 sigaction(sig, &sigAct, &oldAct); | |
| 4479 | |
| 4480 void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
| 4481 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
| 4482 assert(oldhand2 == oldhand, "no concurrent signal handler installation"); | |
| 4483 } | |
| 4484 | |
| 4485 | |
| 4486 #define DO_SIGNAL_CHECK(sig) \ | |
| 4487 if (!sigismember(&check_signal_done, sig)) \ | |
| 4488 os::Solaris::check_signal_handler(sig) | |
| 4489 | |
| 4490 // This method is a periodic task to check for misbehaving JNI applications | |
| 4491 // under CheckJNI, we can add any periodic checks here | |
| 4492 | |
| 4493 void os::run_periodic_checks() { | |
| 4494 // A big source of grief is hijacking virt. addr 0x0 on Solaris, | |
| 4495 // thereby preventing a NULL checks. | |
| 4496 if(!check_addr0_done) check_addr0_done = check_addr0(tty); | |
| 4497 | |
| 4498 if (check_signals == false) return; | |
| 4499 | |
| 4500 // SEGV and BUS if overridden could potentially prevent | |
| 4501 // generation of hs*.log in the event of a crash, debugging | |
| 4502 // such a case can be very challenging, so we absolutely | |
| 4503 // check for the following for a good measure: | |
| 4504 DO_SIGNAL_CHECK(SIGSEGV); | |
| 4505 DO_SIGNAL_CHECK(SIGILL); | |
| 4506 DO_SIGNAL_CHECK(SIGFPE); | |
| 4507 DO_SIGNAL_CHECK(SIGBUS); | |
| 4508 DO_SIGNAL_CHECK(SIGPIPE); | |
| 4509 DO_SIGNAL_CHECK(SIGXFSZ); | |
| 4510 | |
| 4511 // ReduceSignalUsage allows the user to override these handlers | |
| 4512 // see comments at the very top and jvm_solaris.h | |
| 4513 if (!ReduceSignalUsage) { | |
| 4514 DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); | |
| 4515 DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); | |
| 4516 DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); | |
| 4517 DO_SIGNAL_CHECK(BREAK_SIGNAL); | |
| 4518 } | |
| 4519 | |
| 4520 // See comments above for using JVM1/JVM2 and UseAltSigs | |
| 4521 DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt()); | |
| 4522 DO_SIGNAL_CHECK(os::Solaris::SIGasync()); | |
| 4523 | |
| 4524 } | |
| 4525 | |
| 4526 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); | |
| 4527 | |
| 4528 static os_sigaction_t os_sigaction = NULL; | |
| 4529 | |
| 4530 void os::Solaris::check_signal_handler(int sig) { | |
| 4531 char buf[O_BUFLEN]; | |
| 4532 address jvmHandler = NULL; | |
| 4533 | |
| 4534 struct sigaction act; | |
| 4535 if (os_sigaction == NULL) { | |
| 4536 // only trust the default sigaction, in case it has been interposed | |
| 4537 os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); | |
| 4538 if (os_sigaction == NULL) return; | |
| 4539 } | |
| 4540 | |
| 4541 os_sigaction(sig, (struct sigaction*)NULL, &act); | |
| 4542 | |
| 4543 address thisHandler = (act.sa_flags & SA_SIGINFO) | |
| 4544 ? CAST_FROM_FN_PTR(address, act.sa_sigaction) | |
| 4545 : CAST_FROM_FN_PTR(address, act.sa_handler) ; | |
| 4546 | |
| 4547 | |
| 4548 switch(sig) { | |
| 4549 case SIGSEGV: | |
| 4550 case SIGBUS: | |
| 4551 case SIGFPE: | |
| 4552 case SIGPIPE: | |
| 4553 case SIGXFSZ: | |
| 4554 case SIGILL: | |
| 4555 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
| 4556 break; | |
| 4557 | |
| 4558 case SHUTDOWN1_SIGNAL: | |
| 4559 case SHUTDOWN2_SIGNAL: | |
| 4560 case SHUTDOWN3_SIGNAL: | |
| 4561 case BREAK_SIGNAL: | |
| 4562 jvmHandler = (address)user_handler(); | |
| 4563 break; | |
| 4564 | |
| 4565 default: | |
| 4566 int intrsig = os::Solaris::SIGinterrupt(); | |
| 4567 int asynsig = os::Solaris::SIGasync(); | |
| 4568 | |
| 4569 if (sig == intrsig) { | |
| 4570 jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler); | |
| 4571 } else if (sig == asynsig) { | |
| 4572 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
| 4573 } else { | |
| 4574 return; | |
| 4575 } | |
| 4576 break; | |
| 4577 } | |
| 4578 | |
| 4579 | |
| 4580 if (thisHandler != jvmHandler) { | |
| 4581 tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); | |
| 4582 tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); | |
| 4583 tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); | |
| 4584 // No need to check this sig any longer | |
| 4585 sigaddset(&check_signal_done, sig); | |
| 4586 } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
| 4587 tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); | |
| 4588 tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig)); | |
| 4589 tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags); | |
| 4590 // No need to check this sig any longer | |
| 4591 sigaddset(&check_signal_done, sig); | |
| 4592 } | |
| 4593 | |
| 4594 // Print all the signal handler state | |
| 4595 if (sigismember(&check_signal_done, sig)) { | |
| 4596 print_signal_handlers(tty, buf, O_BUFLEN); | |
| 4597 } | |
| 4598 | |
| 4599 } | |
| 4600 | |
| 4601 void os::Solaris::install_signal_handlers() { | |
| 4602 bool libjsigdone = false; | |
| 4603 signal_handlers_are_installed = true; | |
| 4604 | |
| 4605 // signal-chaining | |
| 4606 typedef void (*signal_setting_t)(); | |
| 4607 signal_setting_t begin_signal_setting = NULL; | |
| 4608 signal_setting_t end_signal_setting = NULL; | |
| 4609 begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
| 4610 dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); | |
| 4611 if (begin_signal_setting != NULL) { | |
| 4612 end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
| 4613 dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); | |
| 4614 get_signal_action = CAST_TO_FN_PTR(get_signal_t, | |
| 4615 dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); | |
| 4616 get_libjsig_version = CAST_TO_FN_PTR(version_getting_t, | |
| 4617 dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version")); | |
| 4618 libjsig_is_loaded = true; | |
| 4619 if (os::Solaris::get_libjsig_version != NULL) { | |
| 4620 libjsigversion = (*os::Solaris::get_libjsig_version)(); | |
| 4621 } | |
| 4622 assert(UseSignalChaining, "should enable signal-chaining"); | |
| 4623 } | |
| 4624 if (libjsig_is_loaded) { | |
| 4625 // Tell libjsig jvm is setting signal handlers | |
| 4626 (*begin_signal_setting)(); | |
| 4627 } | |
| 4628 | |
| 4629 set_signal_handler(SIGSEGV, true, true); | |
| 4630 set_signal_handler(SIGPIPE, true, true); | |
| 4631 set_signal_handler(SIGXFSZ, true, true); | |
| 4632 set_signal_handler(SIGBUS, true, true); | |
| 4633 set_signal_handler(SIGILL, true, true); | |
| 4634 set_signal_handler(SIGFPE, true, true); | |
| 4635 | |
| 4636 | |
| 4637 if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) { | |
| 4638 | |
| 4639 // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so | |
| 4640 // can not register overridable signals which might be > 32 | |
| 4641 if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) { | |
| 4642 // Tell libjsig jvm has finished setting signal handlers | |
| 4643 (*end_signal_setting)(); | |
| 4644 libjsigdone = true; | |
| 4645 } | |
| 4646 } | |
| 4647 | |
| 4648 // Never ok to chain our SIGinterrupt | |
| 4649 set_signal_handler(os::Solaris::SIGinterrupt(), true, false); | |
| 4650 set_signal_handler(os::Solaris::SIGasync(), true, true); | |
| 4651 | |
| 4652 if (libjsig_is_loaded && !libjsigdone) { | |
| 4653 // Tell libjsig jvm finishes setting signal handlers | |
| 4654 (*end_signal_setting)(); | |
| 4655 } | |
| 4656 | |
| 4657 // We don't activate signal checker if libjsig is in place, we trust ourselves | |
|
3956
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4658 // and if UserSignalHandler is installed all bets are off. |
|
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4659 // Log that signal checking is off only if -verbose:jni is specified. |
| 0 | 4660 if (CheckJNICalls) { |
| 4661 if (libjsig_is_loaded) { | |
|
3956
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4662 if (PrintJNIResolving) { |
|
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4663 tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); |
|
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4664 } |
| 0 | 4665 check_signals = false; |
| 4666 } | |
| 4667 if (AllowUserSignalHandlers) { | |
|
3956
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4668 if (PrintJNIResolving) { |
|
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4669 tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); |
|
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
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3885
diff
changeset
|
4670 } |
| 0 | 4671 check_signals = false; |
| 4672 } | |
| 4673 } | |
| 4674 } | |
| 4675 | |
| 4676 | |
| 4677 void report_error(const char* file_name, int line_no, const char* title, const char* format, ...); | |
| 4678 | |
| 4679 const char * signames[] = { | |
| 4680 "SIG0", | |
| 4681 "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", | |
| 4682 "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", | |
| 4683 "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", | |
| 4684 "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH", | |
| 4685 "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT", | |
| 4686 "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU", | |
| 4687 "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW", | |
| 4688 "SIGCANCEL", "SIGLOST" | |
| 4689 }; | |
| 4690 | |
| 4691 const char* os::exception_name(int exception_code, char* buf, size_t size) { | |
| 4692 if (0 < exception_code && exception_code <= SIGRTMAX) { | |
| 4693 // signal | |
| 4694 if (exception_code < sizeof(signames)/sizeof(const char*)) { | |
| 4695 jio_snprintf(buf, size, "%s", signames[exception_code]); | |
| 4696 } else { | |
| 4697 jio_snprintf(buf, size, "SIG%d", exception_code); | |
| 4698 } | |
| 4699 return buf; | |
| 4700 } else { | |
| 4701 return NULL; | |
| 4702 } | |
| 4703 } | |
| 4704 | |
| 4705 // (Static) wrappers for the new libthread API | |
| 4706 int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate; | |
| 4707 int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate; | |
| 4708 int_fnP_thread_t_i os::Solaris::_thr_setmutator; | |
| 4709 int_fnP_thread_t os::Solaris::_thr_suspend_mutator; | |
| 4710 int_fnP_thread_t os::Solaris::_thr_continue_mutator; | |
| 4711 | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4712 // (Static) wrapper for getisax(2) call. |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4713 os::Solaris::getisax_func_t os::Solaris::_getisax = 0; |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4714 |
| 0 | 4715 // (Static) wrappers for the liblgrp API |
| 4716 os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home; | |
| 4717 os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init; | |
| 4718 os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini; | |
| 4719 os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root; | |
| 4720 os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children; | |
|
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
4721 os::Solaris::lgrp_resources_func_t os::Solaris::_lgrp_resources; |
| 0 | 4722 os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps; |
| 4723 os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale; | |
| 4724 os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0; | |
| 4725 | |
| 4726 // (Static) wrapper for meminfo() call. | |
| 4727 os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0; | |
| 4728 | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4729 static address resolve_symbol_lazy(const char* name) { |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4730 address addr = (address) dlsym(RTLD_DEFAULT, name); |
| 0 | 4731 if(addr == NULL) { |
| 4732 // RTLD_DEFAULT was not defined on some early versions of 2.5.1 | |
| 4733 addr = (address) dlsym(RTLD_NEXT, name); | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4734 } |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4735 return addr; |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4736 } |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4737 |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4738 static address resolve_symbol(const char* name) { |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4739 address addr = resolve_symbol_lazy(name); |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4740 if(addr == NULL) { |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4741 fatal(dlerror()); |
| 0 | 4742 } |
| 4743 return addr; | |
| 4744 } | |
| 4745 | |
| 4746 | |
| 4747 | |
| 4748 // isT2_libthread() | |
| 4749 // | |
| 4750 // Routine to determine if we are currently using the new T2 libthread. | |
| 4751 // | |
| 4752 // We determine if we are using T2 by reading /proc/self/lstatus and | |
| 4753 // looking for a thread with the ASLWP bit set. If we find this status | |
| 4754 // bit set, we must assume that we are NOT using T2. The T2 team | |
| 4755 // has approved this algorithm. | |
| 4756 // | |
| 4757 // We need to determine if we are running with the new T2 libthread | |
| 4758 // since setting native thread priorities is handled differently | |
| 4759 // when using this library. All threads created using T2 are bound | |
| 4760 // threads. Calling thr_setprio is meaningless in this case. | |
| 4761 // | |
| 4762 bool isT2_libthread() { | |
| 4763 static prheader_t * lwpArray = NULL; | |
| 4764 static int lwpSize = 0; | |
| 4765 static int lwpFile = -1; | |
| 4766 lwpstatus_t * that; | |
| 4767 char lwpName [128]; | |
| 4768 bool isT2 = false; | |
| 4769 | |
| 4770 #define ADR(x) ((uintptr_t)(x)) | |
| 4771 #define LWPINDEX(ary,ix) ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1)))) | |
| 4772 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4773 lwpFile = ::open("/proc/self/lstatus", O_RDONLY, 0); |
|
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4774 if (lwpFile < 0) { |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4775 if (ThreadPriorityVerbose) warning ("Couldn't open /proc/self/lstatus\n"); |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4776 return false; |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4777 } |
| 0 | 4778 lwpSize = 16*1024; |
| 4779 for (;;) { | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4780 ::lseek64 (lwpFile, 0, SEEK_SET); |
| 6197 | 4781 lwpArray = (prheader_t *)NEW_C_HEAP_ARRAY(char, lwpSize, mtInternal); |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4782 if (::read(lwpFile, lwpArray, lwpSize) < 0) { |
|
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4783 if (ThreadPriorityVerbose) warning("Error reading /proc/self/lstatus\n"); |
| 0 | 4784 break; |
| 4785 } | |
|
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4786 if ((lwpArray->pr_nent * lwpArray->pr_entsize) <= lwpSize) { |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4787 // We got a good snapshot - now iterate over the list. |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4788 int aslwpcount = 0; |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4789 for (int i = 0; i < lwpArray->pr_nent; i++ ) { |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4790 that = LWPINDEX(lwpArray,i); |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4791 if (that->pr_flags & PR_ASLWP) { |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4792 aslwpcount++; |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4793 } |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4794 } |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4795 if (aslwpcount == 0) isT2 = true; |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4796 break; |
| 0 | 4797 } |
|
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4798 lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize; |
| 6197 | 4799 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); // retry. |
| 4800 } | |
| 4801 | |
| 4802 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4803 ::close (lwpFile); |
|
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4804 if (ThreadPriorityVerbose) { |
|
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4805 if (isT2) tty->print_cr("We are running with a T2 libthread\n"); |
| 0 | 4806 else tty->print_cr("We are not running with a T2 libthread\n"); |
| 4807 } | |
|
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4808 return isT2; |
| 0 | 4809 } |
| 4810 | |
| 4811 | |
| 4812 void os::Solaris::libthread_init() { | |
| 4813 address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators"); | |
| 4814 | |
| 4815 // Determine if we are running with the new T2 libthread | |
| 4816 os::Solaris::set_T2_libthread(isT2_libthread()); | |
| 4817 | |
| 4818 lwp_priocntl_init(); | |
| 4819 | |
| 4820 // RTLD_DEFAULT was not defined on some early versions of 5.5.1 | |
| 4821 if(func == NULL) { | |
| 4822 func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators"); | |
| 4823 // Guarantee that this VM is running on an new enough OS (5.6 or | |
| 4824 // later) that it will have a new enough libthread.so. | |
| 4825 guarantee(func != NULL, "libthread.so is too old."); | |
| 4826 } | |
| 4827 | |
| 4828 // Initialize the new libthread getstate API wrappers | |
| 4829 func = resolve_symbol("thr_getstate"); | |
| 4830 os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func)); | |
| 4831 | |
| 4832 func = resolve_symbol("thr_setstate"); | |
| 4833 os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func)); | |
| 4834 | |
| 4835 func = resolve_symbol("thr_setmutator"); | |
| 4836 os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func)); | |
| 4837 | |
| 4838 func = resolve_symbol("thr_suspend_mutator"); | |
| 4839 os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
| 4840 | |
| 4841 func = resolve_symbol("thr_continue_mutator"); | |
| 4842 os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
| 4843 | |
| 4844 int size; | |
| 4845 void (*handler_info_func)(address *, int *); | |
| 4846 handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo")); | |
| 4847 handler_info_func(&handler_start, &size); | |
| 4848 handler_end = handler_start + size; | |
| 4849 } | |
| 4850 | |
| 4851 | |
| 4852 int_fnP_mutex_tP os::Solaris::_mutex_lock; | |
| 4853 int_fnP_mutex_tP os::Solaris::_mutex_trylock; | |
| 4854 int_fnP_mutex_tP os::Solaris::_mutex_unlock; | |
| 4855 int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init; | |
| 4856 int_fnP_mutex_tP os::Solaris::_mutex_destroy; | |
| 4857 int os::Solaris::_mutex_scope = USYNC_THREAD; | |
| 4858 | |
| 4859 int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait; | |
| 4860 int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait; | |
| 4861 int_fnP_cond_tP os::Solaris::_cond_signal; | |
| 4862 int_fnP_cond_tP os::Solaris::_cond_broadcast; | |
| 4863 int_fnP_cond_tP_i_vP os::Solaris::_cond_init; | |
| 4864 int_fnP_cond_tP os::Solaris::_cond_destroy; | |
| 4865 int os::Solaris::_cond_scope = USYNC_THREAD; | |
| 4866 | |
| 4867 void os::Solaris::synchronization_init() { | |
| 4868 if(UseLWPSynchronization) { | |
| 4869 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock"))); | |
| 4870 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock"))); | |
| 4871 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock"))); | |
| 4872 os::Solaris::set_mutex_init(lwp_mutex_init); | |
| 4873 os::Solaris::set_mutex_destroy(lwp_mutex_destroy); | |
| 4874 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
| 4875 | |
| 4876 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait"))); | |
| 4877 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait"))); | |
| 4878 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal"))); | |
| 4879 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast"))); | |
| 4880 os::Solaris::set_cond_init(lwp_cond_init); | |
| 4881 os::Solaris::set_cond_destroy(lwp_cond_destroy); | |
| 4882 os::Solaris::set_cond_scope(USYNC_THREAD); | |
| 4883 } | |
| 4884 else { | |
| 4885 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
| 4886 os::Solaris::set_cond_scope(USYNC_THREAD); | |
| 4887 | |
| 4888 if(UsePthreads) { | |
| 4889 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock"))); | |
| 4890 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock"))); | |
| 4891 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock"))); | |
| 4892 os::Solaris::set_mutex_init(pthread_mutex_default_init); | |
| 4893 os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy"))); | |
| 4894 | |
| 4895 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait"))); | |
| 4896 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait"))); | |
| 4897 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal"))); | |
| 4898 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast"))); | |
| 4899 os::Solaris::set_cond_init(pthread_cond_default_init); | |
| 4900 os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy"))); | |
| 4901 } | |
| 4902 else { | |
| 4903 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock"))); | |
| 4904 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock"))); | |
| 4905 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock"))); | |
| 4906 os::Solaris::set_mutex_init(::mutex_init); | |
| 4907 os::Solaris::set_mutex_destroy(::mutex_destroy); | |
| 4908 | |
| 4909 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait"))); | |
| 4910 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait"))); | |
| 4911 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal"))); | |
| 4912 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast"))); | |
| 4913 os::Solaris::set_cond_init(::cond_init); | |
| 4914 os::Solaris::set_cond_destroy(::cond_destroy); | |
| 4915 } | |
| 4916 } | |
| 4917 } | |
| 4918 | |
|
462
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|
4919 bool os::Solaris::liblgrp_init() { |
|
267
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diff
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|
4920 void *handle = dlopen("liblgrp.so.1", RTLD_LAZY); |
| 0 | 4921 if (handle != NULL) { |
| 4922 os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home"))); | |
| 4923 os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init"))); | |
| 4924 os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini"))); | |
| 4925 os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root"))); | |
| 4926 os::Solaris::set_lgrp_children(CAST_TO_FN_PTR(lgrp_children_func_t, dlsym(handle, "lgrp_children"))); | |
|
144
e3729351c946
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diff
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|
4927 os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources"))); |
| 0 | 4928 os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps"))); |
| 4929 os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t, | |
| 4930 dlsym(handle, "lgrp_cookie_stale"))); | |
| 4931 | |
| 4932 lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER); | |
| 4933 set_lgrp_cookie(c); | |
|
462
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diff
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|
4934 return true; |
|
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|
4935 } |
|
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|
4936 return false; |
| 0 | 4937 } |
| 4938 | |
| 4939 void os::Solaris::misc_sym_init() { | |
|
641
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diff
changeset
|
4940 address func; |
|
6af0a709d52b
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548
diff
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|
4941 |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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548
diff
changeset
|
4942 // getisax |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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548
diff
changeset
|
4943 func = resolve_symbol_lazy("getisax"); |
|
6af0a709d52b
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548
diff
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|
4944 if (func != NULL) { |
|
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diff
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|
4945 os::Solaris::_getisax = CAST_TO_FN_PTR(getisax_func_t, func); |
|
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diff
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|
4946 } |
|
6af0a709d52b
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twisti
parents:
548
diff
changeset
|
4947 |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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parents:
548
diff
changeset
|
4948 // meminfo |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4949 func = resolve_symbol_lazy("meminfo"); |
| 0 | 4950 if (func != NULL) { |
| 4951 os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func)); | |
| 4952 } | |
| 4953 } | |
| 4954 | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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548
diff
changeset
|
4955 uint_t os::Solaris::getisax(uint32_t* array, uint_t n) { |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
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|
4956 assert(_getisax != NULL, "_getisax not set"); |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
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548
diff
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|
4957 return _getisax(array, n); |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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548
diff
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|
4958 } |
|
6af0a709d52b
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548
diff
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|
4959 |
| 0 | 4960 // Symbol doesn't exist in Solaris 8 pset.h |
| 4961 #ifndef PS_MYID | |
| 4962 #define PS_MYID -3 | |
| 4963 #endif | |
| 4964 | |
| 4965 // int pset_getloadavg(psetid_t pset, double loadavg[], int nelem); | |
| 4966 typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem); | |
| 4967 static pset_getloadavg_type pset_getloadavg_ptr = NULL; | |
| 4968 | |
| 4969 void init_pset_getloadavg_ptr(void) { | |
| 4970 pset_getloadavg_ptr = | |
| 4971 (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg"); | |
| 4972 if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) { | |
| 4973 warning("pset_getloadavg function not found"); | |
| 4974 } | |
| 4975 } | |
| 4976 | |
| 4977 int os::Solaris::_dev_zero_fd = -1; | |
| 4978 | |
| 4979 // this is called _before_ the global arguments have been parsed | |
| 4980 void os::init(void) { | |
| 4981 _initial_pid = getpid(); | |
| 4982 | |
| 4983 max_hrtime = first_hrtime = gethrtime(); | |
| 4984 | |
| 4985 init_random(1234567); | |
| 4986 | |
| 4987 page_size = sysconf(_SC_PAGESIZE); | |
| 4988 if (page_size == -1) | |
|
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
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1353
diff
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|
4989 fatal(err_msg("os_solaris.cpp: os::init: sysconf failed (%s)", |
|
f03d0a26bf83
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jcoomes
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1353
diff
changeset
|
4990 strerror(errno))); |
| 0 | 4991 init_page_sizes((size_t) page_size); |
| 4992 | |
| 4993 Solaris::initialize_system_info(); | |
| 4994 | |
|
641
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|
4995 // Initialize misc. symbols as soon as possible, so we can use them |
|
6af0a709d52b
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548
diff
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|
4996 // if we need them. |
|
6af0a709d52b
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diff
changeset
|
4997 Solaris::misc_sym_init(); |
|
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diff
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|
4998 |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
4999 int fd = ::open("/dev/zero", O_RDWR); |
| 0 | 5000 if (fd < 0) { |
|
1490
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1353
diff
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|
5001 fatal(err_msg("os::init: cannot open /dev/zero (%s)", strerror(errno))); |
| 0 | 5002 } else { |
| 5003 Solaris::set_dev_zero_fd(fd); | |
| 5004 | |
| 5005 // Close on exec, child won't inherit. | |
| 5006 fcntl(fd, F_SETFD, FD_CLOEXEC); | |
| 5007 } | |
| 5008 | |
| 5009 clock_tics_per_sec = CLK_TCK; | |
| 5010 | |
| 5011 // check if dladdr1() exists; dladdr1 can provide more information than | |
| 5012 // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9 | |
| 5013 // and is available on linker patches for 5.7 and 5.8. | |
| 5014 // libdl.so must have been loaded, this call is just an entry lookup | |
| 5015 void * hdl = dlopen("libdl.so", RTLD_NOW); | |
| 5016 if (hdl) | |
| 5017 dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1")); | |
| 5018 | |
| 5019 // (Solaris only) this switches to calls that actually do locking. | |
| 5020 ThreadCritical::initialize(); | |
| 5021 | |
| 5022 main_thread = thr_self(); | |
| 5023 | |
| 5024 // Constant minimum stack size allowed. It must be at least | |
| 5025 // the minimum of what the OS supports (thr_min_stack()), and | |
| 5026 // enough to allow the thread to get to user bytecode execution. | |
| 5027 Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed); | |
| 5028 // If the pagesize of the VM is greater than 8K determine the appropriate | |
| 5029 // number of initial guard pages. The user can change this with the | |
| 5030 // command line arguments, if needed. | |
| 5031 if (vm_page_size() > 8*K) { | |
| 5032 StackYellowPages = 1; | |
| 5033 StackRedPages = 1; | |
| 5034 StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size(); | |
| 5035 } | |
| 5036 } | |
| 5037 | |
| 5038 // To install functions for atexit system call | |
| 5039 extern "C" { | |
| 5040 static void perfMemory_exit_helper() { | |
| 5041 perfMemory_exit(); | |
| 5042 } | |
| 5043 } | |
| 5044 | |
| 5045 // this is called _after_ the global arguments have been parsed | |
| 5046 jint os::init_2(void) { | |
| 5047 // try to enable extended file IO ASAP, see 6431278 | |
| 5048 os::Solaris::try_enable_extended_io(); | |
| 5049 | |
| 5050 // Allocate a single page and mark it as readable for safepoint polling. Also | |
| 5051 // use this first mmap call to check support for MAP_ALIGN. | |
| 5052 address polling_page = (address)Solaris::mmap_chunk((char*)page_size, | |
| 5053 page_size, | |
| 5054 MAP_PRIVATE | MAP_ALIGN, | |
| 5055 PROT_READ); | |
| 5056 if (polling_page == NULL) { | |
| 5057 has_map_align = false; | |
| 5058 polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE, | |
| 5059 PROT_READ); | |
| 5060 } | |
| 5061 | |
| 5062 os::set_polling_page(polling_page); | |
| 5063 | |
| 5064 #ifndef PRODUCT | |
| 5065 if( Verbose && PrintMiscellaneous ) | |
| 5066 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
| 5067 #endif | |
| 5068 | |
| 5069 if (!UseMembar) { | |
| 5070 address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE ); | |
| 5071 guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page"); | |
| 5072 os::set_memory_serialize_page( mem_serialize_page ); | |
| 5073 | |
| 5074 #ifndef PRODUCT | |
| 5075 if(Verbose && PrintMiscellaneous) | |
| 5076 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
| 5077 #endif | |
| 5078 } | |
| 5079 | |
|
3318
188c9a5d6a6d
7040485: Use transparent huge page on linux by default
iveresov
parents:
3292
diff
changeset
|
5080 os::large_page_init(); |
| 0 | 5081 |
| 5082 // Check minimum allowable stack size for thread creation and to initialize | |
| 5083 // the java system classes, including StackOverflowError - depends on page | |
| 5084 // size. Add a page for compiler2 recursion in main thread. | |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1865
diff
changeset
|
5085 // Add in 2*BytesPerWord times page size to account for VM stack during |
| 0 | 5086 // class initialization depending on 32 or 64 bit VM. |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
5087 os::Solaris::min_stack_allowed = MAX2(os::Solaris::min_stack_allowed, |
|
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1865
diff
changeset
|
5088 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
|
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1865
diff
changeset
|
5089 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size); |
| 0 | 5090 |
| 5091 size_t threadStackSizeInBytes = ThreadStackSize * K; | |
| 5092 if (threadStackSizeInBytes != 0 && | |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1865
diff
changeset
|
5093 threadStackSizeInBytes < os::Solaris::min_stack_allowed) { |
| 0 | 5094 tty->print_cr("\nThe stack size specified is too small, Specify at least %dk", |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1865
diff
changeset
|
5095 os::Solaris::min_stack_allowed/K); |
| 0 | 5096 return JNI_ERR; |
| 5097 } | |
| 5098 | |
| 5099 // For 64kbps there will be a 64kb page size, which makes | |
| 5100 // the usable default stack size quite a bit less. Increase the | |
| 5101 // stack for 64kb (or any > than 8kb) pages, this increases | |
| 5102 // virtual memory fragmentation (since we're not creating the | |
| 5103 // stack on a power of 2 boundary. The real fix for this | |
| 5104 // should be to fix the guard page mechanism. | |
| 5105 | |
| 5106 if (vm_page_size() > 8*K) { | |
| 5107 threadStackSizeInBytes = (threadStackSizeInBytes != 0) | |
| 5108 ? threadStackSizeInBytes + | |
| 5109 ((StackYellowPages + StackRedPages) * vm_page_size()) | |
| 5110 : 0; | |
| 5111 ThreadStackSize = threadStackSizeInBytes/K; | |
| 5112 } | |
| 5113 | |
| 5114 // Make the stack size a multiple of the page size so that | |
| 5115 // the yellow/red zones can be guarded. | |
| 5116 JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, | |
| 5117 vm_page_size())); | |
| 5118 | |
| 5119 Solaris::libthread_init(); | |
|
462
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439
diff
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|
5120 |
| 0 | 5121 if (UseNUMA) { |
|
462
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iveresov
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439
diff
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|
5122 if (!Solaris::liblgrp_init()) { |
|
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439
diff
changeset
|
5123 UseNUMA = false; |
|
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
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|
5124 } else { |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
changeset
|
5125 size_t lgrp_limit = os::numa_get_groups_num(); |
| 6197 | 5126 int *lgrp_ids = NEW_C_HEAP_ARRAY(int, lgrp_limit, mtInternal); |
|
462
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iveresov
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439
diff
changeset
|
5127 size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit); |
| 6197 | 5128 FREE_C_HEAP_ARRAY(int, lgrp_ids, mtInternal); |
|
462
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iveresov
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439
diff
changeset
|
5129 if (lgrp_num < 2) { |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
changeset
|
5130 // There's only one locality group, disable NUMA. |
|
85f1b9537f70
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iveresov
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439
diff
changeset
|
5131 UseNUMA = false; |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
changeset
|
5132 } |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
changeset
|
5133 } |
|
3292
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5134 // ISM is not compatible with the NUMA allocator - it always allocates |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5135 // pages round-robin across the lgroups. |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5136 if (UseNUMA && UseLargePages && UseISM) { |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5137 if (!FLAG_IS_DEFAULT(UseNUMA)) { |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5138 if (FLAG_IS_DEFAULT(UseLargePages) && FLAG_IS_DEFAULT(UseISM)) { |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5139 UseLargePages = false; |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5140 } else { |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5141 warning("UseNUMA is not compatible with ISM large pages, disabling NUMA allocator"); |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5142 UseNUMA = false; |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5143 } |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5144 } else { |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5145 UseNUMA = false; |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5146 } |
|
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5147 } |
|
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5148 if (!UseNUMA && ForceNUMA) { |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5149 UseNUMA = true; |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5150 } |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5151 } |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5152 |
| 0 | 5153 Solaris::signal_sets_init(); |
| 5154 Solaris::init_signal_mem(); | |
| 5155 Solaris::install_signal_handlers(); | |
| 5156 | |
| 5157 if (libjsigversion < JSIG_VERSION_1_4_1) { | |
| 5158 Maxlibjsigsigs = OLDMAXSIGNUM; | |
| 5159 } | |
| 5160 | |
| 5161 // initialize synchronization primitives to use either thread or | |
| 5162 // lwp synchronization (controlled by UseLWPSynchronization) | |
| 5163 Solaris::synchronization_init(); | |
| 5164 | |
| 5165 if (MaxFDLimit) { | |
| 5166 // set the number of file descriptors to max. print out error | |
| 5167 // if getrlimit/setrlimit fails but continue regardless. | |
| 5168 struct rlimit nbr_files; | |
| 5169 int status = getrlimit(RLIMIT_NOFILE, &nbr_files); | |
| 5170 if (status != 0) { | |
| 5171 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
| 5172 perror("os::init_2 getrlimit failed"); | |
| 5173 } else { | |
| 5174 nbr_files.rlim_cur = nbr_files.rlim_max; | |
| 5175 status = setrlimit(RLIMIT_NOFILE, &nbr_files); | |
| 5176 if (status != 0) { | |
| 5177 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
| 5178 perror("os::init_2 setrlimit failed"); | |
| 5179 } | |
| 5180 } | |
| 5181 } | |
| 5182 | |
| 5183 // Calculate theoretical max. size of Threads to guard gainst | |
| 5184 // artifical out-of-memory situations, where all available address- | |
| 5185 // space has been reserved by thread stacks. Default stack size is 1Mb. | |
| 5186 size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ? | |
| 5187 JavaThread::stack_size_at_create() : (1*K*K); | |
| 5188 assert(pre_thread_stack_size != 0, "Must have a stack"); | |
| 5189 // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when | |
| 5190 // we should start doing Virtual Memory banging. Currently when the threads will | |
| 5191 // have used all but 200Mb of space. | |
| 5192 size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K); | |
| 5193 Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size; | |
| 5194 | |
| 5195 // at-exit methods are called in the reverse order of their registration. | |
| 5196 // In Solaris 7 and earlier, atexit functions are called on return from | |
| 5197 // main or as a result of a call to exit(3C). There can be only 32 of | |
| 5198 // these functions registered and atexit() does not set errno. In Solaris | |
| 5199 // 8 and later, there is no limit to the number of functions registered | |
| 5200 // and atexit() sets errno. In addition, in Solaris 8 and later, atexit | |
| 5201 // functions are called upon dlclose(3DL) in addition to return from main | |
| 5202 // and exit(3C). | |
| 5203 | |
| 5204 if (PerfAllowAtExitRegistration) { | |
| 5205 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
| 5206 // atexit functions can be delayed until process exit time, which | |
| 5207 // can be problematic for embedded VM situations. Embedded VMs should | |
| 5208 // call DestroyJavaVM() to assure that VM resources are released. | |
| 5209 | |
| 5210 // note: perfMemory_exit_helper atexit function may be removed in | |
| 5211 // the future if the appropriate cleanup code can be added to the | |
| 5212 // VM_Exit VMOperation's doit method. | |
| 5213 if (atexit(perfMemory_exit_helper) != 0) { | |
| 5214 warning("os::init2 atexit(perfMemory_exit_helper) failed"); | |
| 5215 } | |
| 5216 } | |
| 5217 | |
| 5218 // Init pset_loadavg function pointer | |
| 5219 init_pset_getloadavg_ptr(); | |
| 5220 | |
| 5221 return JNI_OK; | |
| 5222 } | |
| 5223 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5224 void os::init_3(void) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5225 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5226 } |
| 0 | 5227 |
| 5228 // Mark the polling page as unreadable | |
| 5229 void os::make_polling_page_unreadable(void) { | |
| 5230 if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 ) | |
| 5231 fatal("Could not disable polling page"); | |
| 5232 }; | |
| 5233 | |
| 5234 // Mark the polling page as readable | |
| 5235 void os::make_polling_page_readable(void) { | |
| 5236 if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 ) | |
| 5237 fatal("Could not enable polling page"); | |
| 5238 }; | |
| 5239 | |
| 5240 // OS interface. | |
| 5241 | |
| 5242 bool os::check_heap(bool force) { return true; } | |
| 5243 | |
| 5244 typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr); | |
| 5245 static vsnprintf_t sol_vsnprintf = NULL; | |
| 5246 | |
| 5247 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { | |
| 5248 if (!sol_vsnprintf) { | |
| 5249 //search for the named symbol in the objects that were loaded after libjvm | |
| 5250 void* where = RTLD_NEXT; | |
| 5251 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
| 5252 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
| 5253 if (!sol_vsnprintf){ | |
| 5254 //search for the named symbol in the objects that were loaded before libjvm | |
| 5255 where = RTLD_DEFAULT; | |
| 5256 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
| 5257 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
| 5258 assert(sol_vsnprintf != NULL, "vsnprintf not found"); | |
| 5259 } | |
| 5260 } | |
| 5261 return (*sol_vsnprintf)(buf, count, fmt, argptr); | |
| 5262 } | |
| 5263 | |
| 5264 | |
| 5265 // Is a (classpath) directory empty? | |
| 5266 bool os::dir_is_empty(const char* path) { | |
| 5267 DIR *dir = NULL; | |
| 5268 struct dirent *ptr; | |
| 5269 | |
| 5270 dir = opendir(path); | |
| 5271 if (dir == NULL) return true; | |
| 5272 | |
| 5273 /* Scan the directory */ | |
| 5274 bool result = true; | |
| 5275 char buf[sizeof(struct dirent) + MAX_PATH]; | |
| 5276 struct dirent *dbuf = (struct dirent *) buf; | |
| 5277 while (result && (ptr = readdir(dir, dbuf)) != NULL) { | |
| 5278 if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { | |
| 5279 result = false; | |
| 5280 } | |
| 5281 } | |
| 5282 closedir(dir); | |
| 5283 return result; | |
| 5284 } | |
| 5285 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5286 // This code originates from JDK's sysOpen and open64_w |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5287 // from src/solaris/hpi/src/system_md.c |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5288 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5289 #ifndef O_DELETE |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5290 #define O_DELETE 0x10000 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5291 #endif |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5292 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5293 // Open a file. Unlink the file immediately after open returns |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5294 // if the specified oflag has the O_DELETE flag set. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5295 // O_DELETE is used only in j2se/src/share/native/java/util/zip/ZipFile.c |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5296 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5297 int os::open(const char *path, int oflag, int mode) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5298 if (strlen(path) > MAX_PATH - 1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5299 errno = ENAMETOOLONG; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5300 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5301 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5302 int fd; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5303 int o_delete = (oflag & O_DELETE); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5304 oflag = oflag & ~O_DELETE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5305 |
| 2097 | 5306 fd = ::open64(path, oflag, mode); |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5307 if (fd == -1) return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5308 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5309 //If the open succeeded, the file might still be a directory |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5310 { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5311 struct stat64 buf64; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5312 int ret = ::fstat64(fd, &buf64); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5313 int st_mode = buf64.st_mode; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5314 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5315 if (ret != -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5316 if ((st_mode & S_IFMT) == S_IFDIR) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5317 errno = EISDIR; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5318 ::close(fd); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5319 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5320 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5321 } else { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5322 ::close(fd); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5323 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5324 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5325 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5326 /* |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5327 * 32-bit Solaris systems suffer from: |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5328 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5329 * - an historical default soft limit of 256 per-process file |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5330 * descriptors that is too low for many Java programs. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5331 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5332 * - a design flaw where file descriptors created using stdio |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5333 * fopen must be less than 256, _even_ when the first limit above |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5334 * has been raised. This can cause calls to fopen (but not calls to |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5335 * open, for example) to fail mysteriously, perhaps in 3rd party |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5336 * native code (although the JDK itself uses fopen). One can hardly |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5337 * criticize them for using this most standard of all functions. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5338 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5339 * We attempt to make everything work anyways by: |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5340 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5341 * - raising the soft limit on per-process file descriptors beyond |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5342 * 256 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5343 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5344 * - As of Solaris 10u4, we can request that Solaris raise the 256 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5345 * stdio fopen limit by calling function enable_extended_FILE_stdio. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5346 * This is done in init_2 and recorded in enabled_extended_FILE_stdio |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5347 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5348 * - If we are stuck on an old (pre 10u4) Solaris system, we can |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5349 * workaround the bug by remapping non-stdio file descriptors below |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5350 * 256 to ones beyond 256, which is done below. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5351 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5352 * See: |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5353 * 1085341: 32-bit stdio routines should support file descriptors >255 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5354 * 6533291: Work around 32-bit Solaris stdio limit of 256 open files |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5355 * 6431278: Netbeans crash on 32 bit Solaris: need to call |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5356 * enable_extended_FILE_stdio() in VM initialisation |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5357 * Giri Mandalika's blog |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5358 * http://technopark02.blogspot.com/2005_05_01_archive.html |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5359 */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5360 #ifndef _LP64 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5361 if ((!enabled_extended_FILE_stdio) && fd < 256) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5362 int newfd = ::fcntl(fd, F_DUPFD, 256); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5363 if (newfd != -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5364 ::close(fd); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5365 fd = newfd; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5366 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5367 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5368 #endif // 32-bit Solaris |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5369 /* |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5370 * All file descriptors that are opened in the JVM and not |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5371 * specifically destined for a subprocess should have the |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5372 * close-on-exec flag set. If we don't set it, then careless 3rd |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5373 * party native code might fork and exec without closing all |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5374 * appropriate file descriptors (e.g. as we do in closeDescriptors in |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5375 * UNIXProcess.c), and this in turn might: |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5376 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5377 * - cause end-of-file to fail to be detected on some file |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5378 * descriptors, resulting in mysterious hangs, or |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5379 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5380 * - might cause an fopen in the subprocess to fail on a system |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5381 * suffering from bug 1085341. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5382 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5383 * (Yes, the default setting of the close-on-exec flag is a Unix |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5384 * design flaw) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5385 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5386 * See: |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5387 * 1085341: 32-bit stdio routines should support file descriptors >255 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5388 * 4843136: (process) pipe file descriptor from Runtime.exec not being closed |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5389 * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5390 */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5391 #ifdef FD_CLOEXEC |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5392 { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5393 int flags = ::fcntl(fd, F_GETFD); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5394 if (flags != -1) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5395 ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5396 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5397 #endif |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5398 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5399 if (o_delete != 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5400 ::unlink(path); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5401 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5402 return fd; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5403 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5404 |
| 0 | 5405 // create binary file, rewriting existing file if required |
| 5406 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
| 5407 int oflags = O_WRONLY | O_CREAT; | |
| 5408 if (!rewrite_existing) { | |
| 5409 oflags |= O_EXCL; | |
| 5410 } | |
| 5411 return ::open64(path, oflags, S_IREAD | S_IWRITE); | |
| 5412 } | |
| 5413 | |
| 5414 // return current position of file pointer | |
| 5415 jlong os::current_file_offset(int fd) { | |
| 5416 return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); | |
| 5417 } | |
| 5418 | |
| 5419 // move file pointer to the specified offset | |
| 5420 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
| 5421 return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); | |
| 5422 } | |
| 5423 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5424 jlong os::lseek(int fd, jlong offset, int whence) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5425 return (jlong) ::lseek64(fd, offset, whence); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5426 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5427 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5428 char * os::native_path(char *path) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5429 return path; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5430 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5431 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5432 int os::ftruncate(int fd, jlong length) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5433 return ::ftruncate64(fd, length); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5434 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5435 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5436 int os::fsync(int fd) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5437 RESTARTABLE_RETURN_INT(::fsync(fd)); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5438 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5439 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5440 int os::available(int fd, jlong *bytes) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5441 jlong cur, end; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5442 int mode; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5443 struct stat64 buf64; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5444 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5445 if (::fstat64(fd, &buf64) >= 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5446 mode = buf64.st_mode; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5447 if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5448 /* |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5449 * XXX: is the following call interruptible? If so, this might |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5450 * need to go through the INTERRUPT_IO() wrapper as for other |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5451 * blocking, interruptible calls in this file. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5452 */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5453 int n,ioctl_return; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5454 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5455 INTERRUPTIBLE(::ioctl(fd, FIONREAD, &n),ioctl_return,os::Solaris::clear_interrupted); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5456 if (ioctl_return>= 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5457 *bytes = n; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5458 return 1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5459 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5460 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5461 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5462 if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5463 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5464 } else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5465 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5466 } else if (::lseek64(fd, cur, SEEK_SET) == -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5467 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5468 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5469 *bytes = end - cur; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5470 return 1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5471 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5472 |
| 0 | 5473 // Map a block of memory. |
| 6197 | 5474 char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
| 0 | 5475 char *addr, size_t bytes, bool read_only, |
| 5476 bool allow_exec) { | |
| 5477 int prot; | |
| 5478 int flags; | |
| 5479 | |
| 5480 if (read_only) { | |
| 5481 prot = PROT_READ; | |
| 5482 flags = MAP_SHARED; | |
| 5483 } else { | |
| 5484 prot = PROT_READ | PROT_WRITE; | |
| 5485 flags = MAP_PRIVATE; | |
| 5486 } | |
| 5487 | |
| 5488 if (allow_exec) { | |
| 5489 prot |= PROT_EXEC; | |
| 5490 } | |
| 5491 | |
| 5492 if (addr != NULL) { | |
| 5493 flags |= MAP_FIXED; | |
| 5494 } | |
| 5495 | |
| 5496 char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, | |
| 5497 fd, file_offset); | |
| 5498 if (mapped_address == MAP_FAILED) { | |
| 5499 return NULL; | |
| 5500 } | |
| 5501 return mapped_address; | |
| 5502 } | |
| 5503 | |
| 5504 | |
| 5505 // Remap a block of memory. | |
| 6197 | 5506 char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
| 0 | 5507 char *addr, size_t bytes, bool read_only, |
| 5508 bool allow_exec) { | |
| 5509 // same as map_memory() on this OS | |
| 5510 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
| 5511 allow_exec); | |
| 5512 } | |
| 5513 | |
| 5514 | |
| 5515 // Unmap a block of memory. | |
| 6197 | 5516 bool os::pd_unmap_memory(char* addr, size_t bytes) { |
| 0 | 5517 return munmap(addr, bytes) == 0; |
| 5518 } | |
| 5519 | |
| 5520 void os::pause() { | |
| 5521 char filename[MAX_PATH]; | |
| 5522 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
| 5523 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
| 5524 } else { | |
| 5525 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
| 5526 } | |
| 5527 | |
| 5528 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
| 5529 if (fd != -1) { | |
| 5530 struct stat buf; | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5531 ::close(fd); |
| 0 | 5532 while (::stat(filename, &buf) == 0) { |
| 5533 (void)::poll(NULL, 0, 100); | |
| 5534 } | |
| 5535 } else { | |
| 5536 jio_fprintf(stderr, | |
| 5537 "Could not open pause file '%s', continuing immediately.\n", filename); | |
| 5538 } | |
| 5539 } | |
| 5540 | |
| 5541 #ifndef PRODUCT | |
| 5542 #ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
| 5543 // Turn this on if you need to trace synch operations. | |
| 5544 // Set RECORD_SYNCH_LIMIT to a large-enough value, | |
| 5545 // and call record_synch_enable and record_synch_disable | |
| 5546 // around the computation of interest. | |
| 5547 | |
| 5548 void record_synch(char* name, bool returning); // defined below | |
| 5549 | |
| 5550 class RecordSynch { | |
| 5551 char* _name; | |
| 5552 public: | |
| 5553 RecordSynch(char* name) :_name(name) | |
| 5554 { record_synch(_name, false); } | |
| 5555 ~RecordSynch() { record_synch(_name, true); } | |
| 5556 }; | |
| 5557 | |
| 5558 #define CHECK_SYNCH_OP(ret, name, params, args, inner) \ | |
| 5559 extern "C" ret name params { \ | |
| 5560 typedef ret name##_t params; \ | |
| 5561 static name##_t* implem = NULL; \ | |
| 5562 static int callcount = 0; \ | |
| 5563 if (implem == NULL) { \ | |
| 5564 implem = (name##_t*) dlsym(RTLD_NEXT, #name); \ | |
| 5565 if (implem == NULL) fatal(dlerror()); \ | |
| 5566 } \ | |
| 5567 ++callcount; \ | |
| 5568 RecordSynch _rs(#name); \ | |
| 5569 inner; \ | |
| 5570 return implem args; \ | |
| 5571 } | |
| 5572 // in dbx, examine callcounts this way: | |
| 5573 // for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done | |
| 5574 | |
| 5575 #define CHECK_POINTER_OK(p) \ | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6200
diff
changeset
|
5576 (!Universe::is_fully_initialized() || !Universe::is_reserved_heap((oop)(p))) |
| 0 | 5577 #define CHECK_MU \ |
| 5578 if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only."); | |
| 5579 #define CHECK_CV \ | |
| 5580 if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only."); | |
| 5581 #define CHECK_P(p) \ | |
| 5582 if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only."); | |
| 5583 | |
| 5584 #define CHECK_MUTEX(mutex_op) \ | |
| 5585 CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU); | |
| 5586 | |
| 5587 CHECK_MUTEX( mutex_lock) | |
| 5588 CHECK_MUTEX( _mutex_lock) | |
| 5589 CHECK_MUTEX( mutex_unlock) | |
| 5590 CHECK_MUTEX(_mutex_unlock) | |
| 5591 CHECK_MUTEX( mutex_trylock) | |
| 5592 CHECK_MUTEX(_mutex_trylock) | |
| 5593 | |
| 5594 #define CHECK_COND(cond_op) \ | |
| 5595 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV); | |
| 5596 | |
| 5597 CHECK_COND( cond_wait); | |
| 5598 CHECK_COND(_cond_wait); | |
| 5599 CHECK_COND(_cond_wait_cancel); | |
| 5600 | |
| 5601 #define CHECK_COND2(cond_op) \ | |
| 5602 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV); | |
| 5603 | |
| 5604 CHECK_COND2( cond_timedwait); | |
| 5605 CHECK_COND2(_cond_timedwait); | |
| 5606 CHECK_COND2(_cond_timedwait_cancel); | |
| 5607 | |
| 5608 // do the _lwp_* versions too | |
| 5609 #define mutex_t lwp_mutex_t | |
| 5610 #define cond_t lwp_cond_t | |
| 5611 CHECK_MUTEX( _lwp_mutex_lock) | |
| 5612 CHECK_MUTEX( _lwp_mutex_unlock) | |
| 5613 CHECK_MUTEX( _lwp_mutex_trylock) | |
| 5614 CHECK_MUTEX( __lwp_mutex_lock) | |
| 5615 CHECK_MUTEX( __lwp_mutex_unlock) | |
| 5616 CHECK_MUTEX( __lwp_mutex_trylock) | |
| 5617 CHECK_MUTEX(___lwp_mutex_lock) | |
| 5618 CHECK_MUTEX(___lwp_mutex_unlock) | |
| 5619 | |
| 5620 CHECK_COND( _lwp_cond_wait); | |
| 5621 CHECK_COND( __lwp_cond_wait); | |
| 5622 CHECK_COND(___lwp_cond_wait); | |
| 5623 | |
| 5624 CHECK_COND2( _lwp_cond_timedwait); | |
| 5625 CHECK_COND2( __lwp_cond_timedwait); | |
| 5626 #undef mutex_t | |
| 5627 #undef cond_t | |
| 5628 | |
| 5629 CHECK_SYNCH_OP(int, _lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
| 5630 CHECK_SYNCH_OP(int,__lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
| 5631 CHECK_SYNCH_OP(int, _lwp_kill, (int lwp, int n), (lwp, n), 0); | |
| 5632 CHECK_SYNCH_OP(int,__lwp_kill, (int lwp, int n), (lwp, n), 0); | |
| 5633 CHECK_SYNCH_OP(int, _lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
| 5634 CHECK_SYNCH_OP(int,__lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
| 5635 CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
| 5636 CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
| 5637 | |
| 5638 | |
| 5639 // recording machinery: | |
| 5640 | |
| 5641 enum { RECORD_SYNCH_LIMIT = 200 }; | |
| 5642 char* record_synch_name[RECORD_SYNCH_LIMIT]; | |
| 5643 void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT]; | |
| 5644 bool record_synch_returning[RECORD_SYNCH_LIMIT]; | |
| 5645 thread_t record_synch_thread[RECORD_SYNCH_LIMIT]; | |
| 5646 int record_synch_count = 0; | |
| 5647 bool record_synch_enabled = false; | |
| 5648 | |
| 5649 // in dbx, examine recorded data this way: | |
| 5650 // for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done | |
| 5651 | |
| 5652 void record_synch(char* name, bool returning) { | |
| 5653 if (record_synch_enabled) { | |
| 5654 if (record_synch_count < RECORD_SYNCH_LIMIT) { | |
| 5655 record_synch_name[record_synch_count] = name; | |
| 5656 record_synch_returning[record_synch_count] = returning; | |
| 5657 record_synch_thread[record_synch_count] = thr_self(); | |
| 5658 record_synch_arg0ptr[record_synch_count] = &name; | |
| 5659 record_synch_count++; | |
| 5660 } | |
| 5661 // put more checking code here: | |
| 5662 // ... | |
| 5663 } | |
| 5664 } | |
| 5665 | |
| 5666 void record_synch_enable() { | |
| 5667 // start collecting trace data, if not already doing so | |
| 5668 if (!record_synch_enabled) record_synch_count = 0; | |
| 5669 record_synch_enabled = true; | |
| 5670 } | |
| 5671 | |
| 5672 void record_synch_disable() { | |
| 5673 // stop collecting trace data | |
| 5674 record_synch_enabled = false; | |
| 5675 } | |
| 5676 | |
| 5677 #endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
| 5678 #endif // PRODUCT | |
| 5679 | |
| 5680 const intptr_t thr_time_off = (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
| 5681 const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) - | |
| 5682 (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
| 5683 | |
| 5684 | |
| 5685 // JVMTI & JVM monitoring and management support | |
| 5686 // The thread_cpu_time() and current_thread_cpu_time() are only | |
| 5687 // supported if is_thread_cpu_time_supported() returns true. | |
| 5688 // They are not supported on Solaris T1. | |
| 5689 | |
| 5690 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
| 5691 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
| 5692 // of a thread. | |
| 5693 // | |
| 5694 // current_thread_cpu_time() and thread_cpu_time(Thread *) | |
| 5695 // returns the fast estimate available on the platform. | |
| 5696 | |
| 5697 // hrtime_t gethrvtime() return value includes | |
| 5698 // user time but does not include system time | |
| 5699 jlong os::current_thread_cpu_time() { | |
| 5700 return (jlong) gethrvtime(); | |
| 5701 } | |
| 5702 | |
| 5703 jlong os::thread_cpu_time(Thread *thread) { | |
| 5704 // return user level CPU time only to be consistent with | |
| 5705 // what current_thread_cpu_time returns. | |
| 5706 // thread_cpu_time_info() must be changed if this changes | |
| 5707 return os::thread_cpu_time(thread, false /* user time only */); | |
| 5708 } | |
| 5709 | |
| 5710 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
| 5711 if (user_sys_cpu_time) { | |
| 5712 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
| 5713 } else { | |
| 5714 return os::current_thread_cpu_time(); | |
| 5715 } | |
| 5716 } | |
| 5717 | |
| 5718 jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { | |
| 5719 char proc_name[64]; | |
| 5720 int count; | |
| 5721 prusage_t prusage; | |
| 5722 jlong lwp_time; | |
| 5723 int fd; | |
| 5724 | |
| 5725 sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage", | |
| 5726 getpid(), | |
| 5727 thread->osthread()->lwp_id()); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5728 fd = ::open(proc_name, O_RDONLY); |
| 0 | 5729 if ( fd == -1 ) return -1; |
| 5730 | |
| 5731 do { | |
|
1980
828eafbd85cc
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ikrylov
parents:
1972
diff
changeset
|
5732 count = ::pread(fd, |
| 0 | 5733 (void *)&prusage.pr_utime, |
| 5734 thr_time_size, | |
| 5735 thr_time_off); | |
| 5736 } while (count < 0 && errno == EINTR); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5737 ::close(fd); |
| 0 | 5738 if ( count < 0 ) return -1; |
| 5739 | |
| 5740 if (user_sys_cpu_time) { | |
| 5741 // user + system CPU time | |
| 5742 lwp_time = (((jlong)prusage.pr_stime.tv_sec + | |
| 5743 (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) + | |
| 5744 (jlong)prusage.pr_stime.tv_nsec + | |
| 5745 (jlong)prusage.pr_utime.tv_nsec; | |
| 5746 } else { | |
| 5747 // user level CPU time only | |
| 5748 lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) + | |
| 5749 (jlong)prusage.pr_utime.tv_nsec; | |
| 5750 } | |
| 5751 | |
| 5752 return(lwp_time); | |
| 5753 } | |
| 5754 | |
| 5755 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
| 5756 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
| 5757 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
| 5758 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
| 5759 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
| 5760 } | |
| 5761 | |
| 5762 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
| 5763 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
| 5764 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
| 5765 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
| 5766 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
| 5767 } | |
| 5768 | |
| 5769 bool os::is_thread_cpu_time_supported() { | |
| 5770 if ( os::Solaris::T2_libthread() || UseBoundThreads ) { | |
| 5771 return true; | |
| 5772 } else { | |
| 5773 return false; | |
| 5774 } | |
| 5775 } | |
| 5776 | |
| 5777 // System loadavg support. Returns -1 if load average cannot be obtained. | |
| 5778 // Return the load average for our processor set if the primitive exists | |
| 5779 // (Solaris 9 and later). Otherwise just return system wide loadavg. | |
| 5780 int os::loadavg(double loadavg[], int nelem) { | |
| 5781 if (pset_getloadavg_ptr != NULL) { | |
| 5782 return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem); | |
| 5783 } else { | |
| 5784 return ::getloadavg(loadavg, nelem); | |
| 5785 } | |
| 5786 } | |
| 5787 | |
| 5788 //--------------------------------------------------------------------------------- | |
| 5789 | |
| 5790 static address same_page(address x, address y) { | |
| 5791 intptr_t page_bits = -os::vm_page_size(); | |
| 5792 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) | |
| 5793 return x; | |
| 5794 else if (x > y) | |
| 5795 return (address)(intptr_t(y) | ~page_bits) + 1; | |
| 5796 else | |
| 5797 return (address)(intptr_t(y) & page_bits); | |
| 5798 } | |
| 5799 | |
|
1681
126ea7725993
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bobv
parents:
1642
diff
changeset
|
5800 bool os::find(address addr, outputStream* st) { |
| 0 | 5801 Dl_info dlinfo; |
| 5802 memset(&dlinfo, 0, sizeof(dlinfo)); | |
| 5803 if (dladdr(addr, &dlinfo)) { | |
| 5804 #ifdef _LP64 | |
|
1681
126ea7725993
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bobv
parents:
1642
diff
changeset
|
5805 st->print("0x%016lx: ", addr); |
| 0 | 5806 #else |
|
1681
126ea7725993
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bobv
parents:
1642
diff
changeset
|
5807 st->print("0x%08x: ", addr); |
| 0 | 5808 #endif |
| 5809 if (dlinfo.dli_sname != NULL) | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
1642
diff
changeset
|
5810 st->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr); |
| 0 | 5811 else if (dlinfo.dli_fname) |
|
1681
126ea7725993
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1642
diff
changeset
|
5812 st->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase); |
| 0 | 5813 else |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
1642
diff
changeset
|
5814 st->print("<absolute address>"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5815 if (dlinfo.dli_fname) st->print(" in %s", dlinfo.dli_fname); |
| 0 | 5816 #ifdef _LP64 |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5817 if (dlinfo.dli_fbase) st->print(" at 0x%016lx", dlinfo.dli_fbase); |
| 0 | 5818 #else |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5819 if (dlinfo.dli_fbase) st->print(" at 0x%08x", dlinfo.dli_fbase); |
| 0 | 5820 #endif |
|
1681
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parents:
1642
diff
changeset
|
5821 st->cr(); |
| 0 | 5822 |
| 5823 if (Verbose) { | |
| 5824 // decode some bytes around the PC | |
| 5825 address begin = same_page(addr-40, addr); | |
| 5826 address end = same_page(addr+40, addr); | |
| 5827 address lowest = (address) dlinfo.dli_sname; | |
| 5828 if (!lowest) lowest = (address) dlinfo.dli_fbase; | |
| 5829 if (begin < lowest) begin = lowest; | |
| 5830 Dl_info dlinfo2; | |
| 5831 if (dladdr(end, &dlinfo2) && dlinfo2.dli_saddr != dlinfo.dli_saddr | |
| 5832 && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) | |
| 5833 end = (address) dlinfo2.dli_saddr; | |
|
1681
126ea7725993
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bobv
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1642
diff
changeset
|
5834 Disassembler::decode(begin, end, st); |
| 0 | 5835 } |
| 5836 return true; | |
| 5837 } | |
| 5838 return false; | |
| 5839 } | |
| 5840 | |
| 5841 // Following function has been added to support HotSparc's libjvm.so running | |
| 5842 // under Solaris production JDK 1.2.2 / 1.3.0. These came from | |
| 5843 // src/solaris/hpi/native_threads in the EVM codebase. | |
| 5844 // | |
| 5845 // NOTE: This is no longer needed in the 1.3.1 and 1.4 production release | |
| 5846 // libraries and should thus be removed. We will leave it behind for a while | |
| 5847 // until we no longer want to able to run on top of 1.3.0 Solaris production | |
| 5848 // JDK. See 4341971. | |
| 5849 | |
| 5850 #define STACK_SLACK 0x800 | |
| 5851 | |
| 5852 extern "C" { | |
| 5853 intptr_t sysThreadAvailableStackWithSlack() { | |
| 5854 stack_t st; | |
| 5855 intptr_t retval, stack_top; | |
| 5856 retval = thr_stksegment(&st); | |
| 5857 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
| 5858 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
| 5859 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
| 5860 stack_top=(intptr_t)st.ss_sp-st.ss_size; | |
| 5861 return ((intptr_t)&stack_top - stack_top - STACK_SLACK); | |
| 5862 } | |
| 5863 } | |
| 5864 | |
| 5865 // ObjectMonitor park-unpark infrastructure ... | |
| 5866 // | |
| 5867 // We implement Solaris and Linux PlatformEvents with the | |
| 5868 // obvious condvar-mutex-flag triple. | |
| 5869 // Another alternative that works quite well is pipes: | |
| 5870 // Each PlatformEvent consists of a pipe-pair. | |
| 5871 // The thread associated with the PlatformEvent | |
| 5872 // calls park(), which reads from the input end of the pipe. | |
| 5873 // Unpark() writes into the other end of the pipe. | |
| 5874 // The write-side of the pipe must be set NDELAY. | |
| 5875 // Unfortunately pipes consume a large # of handles. | |
| 5876 // Native solaris lwp_park() and lwp_unpark() work nicely, too. | |
| 5877 // Using pipes for the 1st few threads might be workable, however. | |
| 5878 // | |
| 5879 // park() is permitted to return spuriously. | |
| 5880 // Callers of park() should wrap the call to park() in | |
| 5881 // an appropriate loop. A litmus test for the correct | |
| 5882 // usage of park is the following: if park() were modified | |
| 5883 // to immediately return 0 your code should still work, | |
| 5884 // albeit degenerating to a spin loop. | |
| 5885 // | |
| 5886 // An interesting optimization for park() is to use a trylock() | |
| 5887 // to attempt to acquire the mutex. If the trylock() fails | |
| 5888 // then we know that a concurrent unpark() operation is in-progress. | |
| 5889 // in that case the park() code could simply set _count to 0 | |
| 5890 // and return immediately. The subsequent park() operation *might* | |
| 5891 // return immediately. That's harmless as the caller of park() is | |
| 5892 // expected to loop. By using trylock() we will have avoided a | |
| 5893 // avoided a context switch caused by contention on the per-thread mutex. | |
| 5894 // | |
| 5895 // TODO-FIXME: | |
| 5896 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the | |
| 5897 // objectmonitor implementation. | |
| 5898 // 2. Collapse the JSR166 parker event, and the | |
| 5899 // objectmonitor ParkEvent into a single "Event" construct. | |
| 5900 // 3. In park() and unpark() add: | |
| 5901 // assert (Thread::current() == AssociatedWith). | |
| 5902 // 4. add spurious wakeup injection on a -XX:EarlyParkReturn=N switch. | |
| 5903 // 1-out-of-N park() operations will return immediately. | |
| 5904 // | |
| 5905 // _Event transitions in park() | |
| 5906 // -1 => -1 : illegal | |
| 5907 // 1 => 0 : pass - return immediately | |
| 5908 // 0 => -1 : block | |
| 5909 // | |
| 5910 // _Event serves as a restricted-range semaphore. | |
| 5911 // | |
| 5912 // Another possible encoding of _Event would be with | |
| 5913 // explicit "PARKED" == 01b and "SIGNALED" == 10b bits. | |
| 5914 // | |
| 5915 // TODO-FIXME: add DTRACE probes for: | |
| 5916 // 1. Tx parks | |
| 5917 // 2. Ty unparks Tx | |
| 5918 // 3. Tx resumes from park | |
| 5919 | |
| 5920 | |
| 5921 // value determined through experimentation | |
| 5922 #define ROUNDINGFIX 11 | |
| 5923 | |
| 5924 // utility to compute the abstime argument to timedwait. | |
| 5925 // TODO-FIXME: switch from compute_abstime() to unpackTime(). | |
| 5926 | |
| 5927 static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) { | |
| 5928 // millis is the relative timeout time | |
| 5929 // abstime will be the absolute timeout time | |
| 5930 if (millis < 0) millis = 0; | |
| 5931 struct timeval now; | |
| 5932 int status = gettimeofday(&now, NULL); | |
| 5933 assert(status == 0, "gettimeofday"); | |
| 5934 jlong seconds = millis / 1000; | |
| 5935 jlong max_wait_period; | |
| 5936 | |
| 5937 if (UseLWPSynchronization) { | |
| 5938 // forward port of fix for 4275818 (not sleeping long enough) | |
| 5939 // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where | |
| 5940 // _lwp_cond_timedwait() used a round_down algorithm rather | |
| 5941 // than a round_up. For millis less than our roundfactor | |
| 5942 // it rounded down to 0 which doesn't meet the spec. | |
| 5943 // For millis > roundfactor we may return a bit sooner, but | |
| 5944 // since we can not accurately identify the patch level and | |
| 5945 // this has already been fixed in Solaris 9 and 8 we will | |
| 5946 // leave it alone rather than always rounding down. | |
| 5947 | |
| 5948 if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX; | |
| 5949 // It appears that when we go directly through Solaris _lwp_cond_timedwait() | |
| 5950 // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6 | |
| 5951 max_wait_period = 21000000; | |
| 5952 } else { | |
| 5953 max_wait_period = 50000000; | |
| 5954 } | |
| 5955 millis %= 1000; | |
| 5956 if (seconds > max_wait_period) { // see man cond_timedwait(3T) | |
| 5957 seconds = max_wait_period; | |
| 5958 } | |
| 5959 abstime->tv_sec = now.tv_sec + seconds; | |
| 5960 long usec = now.tv_usec + millis * 1000; | |
| 5961 if (usec >= 1000000) { | |
| 5962 abstime->tv_sec += 1; | |
| 5963 usec -= 1000000; | |
| 5964 } | |
| 5965 abstime->tv_nsec = usec * 1000; | |
| 5966 return abstime; | |
| 5967 } | |
| 5968 | |
| 5969 // Test-and-clear _Event, always leaves _Event set to 0, returns immediately. | |
| 5970 // Conceptually TryPark() should be equivalent to park(0). | |
| 5971 | |
| 5972 int os::PlatformEvent::TryPark() { | |
| 5973 for (;;) { | |
| 5974 const int v = _Event ; | |
| 5975 guarantee ((v == 0) || (v == 1), "invariant") ; | |
| 5976 if (Atomic::cmpxchg (0, &_Event, v) == v) return v ; | |
| 5977 } | |
| 5978 } | |
| 5979 | |
| 5980 void os::PlatformEvent::park() { // AKA: down() | |
| 5981 // Invariant: Only the thread associated with the Event/PlatformEvent | |
| 5982 // may call park(). | |
| 5983 int v ; | |
| 5984 for (;;) { | |
| 5985 v = _Event ; | |
| 5986 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
| 5987 } | |
| 5988 guarantee (v >= 0, "invariant") ; | |
| 5989 if (v == 0) { | |
| 5990 // Do this the hard way by blocking ... | |
| 5991 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
| 5992 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
| 5993 // Only for SPARC >= V8PlusA | |
| 5994 #if defined(__sparc) && defined(COMPILER2) | |
| 5995 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
| 5996 #endif | |
| 5997 int status = os::Solaris::mutex_lock(_mutex); | |
| 5998 assert_status(status == 0, status, "mutex_lock"); | |
| 5999 guarantee (_nParked == 0, "invariant") ; | |
| 6000 ++ _nParked ; | |
| 6001 while (_Event < 0) { | |
| 6002 // for some reason, under 2.7 lwp_cond_wait() may return ETIME ... | |
| 6003 // Treat this the same as if the wait was interrupted | |
| 6004 // With usr/lib/lwp going to kernel, always handle ETIME | |
| 6005 status = os::Solaris::cond_wait(_cond, _mutex); | |
| 6006 if (status == ETIME) status = EINTR ; | |
| 6007 assert_status(status == 0 || status == EINTR, status, "cond_wait"); | |
| 6008 } | |
| 6009 -- _nParked ; | |
| 6010 _Event = 0 ; | |
| 6011 status = os::Solaris::mutex_unlock(_mutex); | |
| 6012 assert_status(status == 0, status, "mutex_unlock"); | |
|
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6013 // Paranoia to ensure our locked and lock-free paths interact |
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6014 // correctly with each other. |
|
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|
6015 OrderAccess::fence(); |
| 0 | 6016 } |
| 6017 } | |
| 6018 | |
| 6019 int os::PlatformEvent::park(jlong millis) { | |
| 6020 guarantee (_nParked == 0, "invariant") ; | |
| 6021 int v ; | |
| 6022 for (;;) { | |
| 6023 v = _Event ; | |
| 6024 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
| 6025 } | |
| 6026 guarantee (v >= 0, "invariant") ; | |
| 6027 if (v != 0) return OS_OK ; | |
| 6028 | |
| 6029 int ret = OS_TIMEOUT; | |
| 6030 timestruc_t abst; | |
| 6031 compute_abstime (&abst, millis); | |
| 6032 | |
| 6033 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
| 6034 // For Solaris SPARC set fprs.FEF=0 prior to parking. | |
| 6035 // Only for SPARC >= V8PlusA | |
| 6036 #if defined(__sparc) && defined(COMPILER2) | |
| 6037 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
| 6038 #endif | |
| 6039 int status = os::Solaris::mutex_lock(_mutex); | |
| 6040 assert_status(status == 0, status, "mutex_lock"); | |
| 6041 guarantee (_nParked == 0, "invariant") ; | |
| 6042 ++ _nParked ; | |
| 6043 while (_Event < 0) { | |
| 6044 int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst); | |
| 6045 assert_status(status == 0 || status == EINTR || | |
| 6046 status == ETIME || status == ETIMEDOUT, | |
| 6047 status, "cond_timedwait"); | |
| 6048 if (!FilterSpuriousWakeups) break ; // previous semantics | |
| 6049 if (status == ETIME || status == ETIMEDOUT) break ; | |
| 6050 // We consume and ignore EINTR and spurious wakeups. | |
| 6051 } | |
| 6052 -- _nParked ; | |
| 6053 if (_Event >= 0) ret = OS_OK ; | |
| 6054 _Event = 0 ; | |
| 6055 status = os::Solaris::mutex_unlock(_mutex); | |
| 6056 assert_status(status == 0, status, "mutex_unlock"); | |
|
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6057 // Paranoia to ensure our locked and lock-free paths interact |
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6058 // correctly with each other. |
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|
6059 OrderAccess::fence(); |
| 0 | 6060 return ret; |
| 6061 } | |
| 6062 | |
| 6063 void os::PlatformEvent::unpark() { | |
|
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6064 // Transitions for _Event: |
|
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6065 // 0 :=> 1 |
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6066 // 1 :=> 1 |
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6067 // -1 :=> either 0 or 1; must signal target thread |
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6068 // That is, we can safely transition _Event from -1 to either |
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6069 // 0 or 1. Forcing 1 is slightly more efficient for back-to-back |
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6070 // unpark() calls. |
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6071 // See also: "Semaphores in Plan 9" by Mullender & Cox |
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6072 // |
|
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6073 // Note: Forcing a transition from "-1" to "1" on an unpark() means |
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6074 // that it will take two back-to-back park() calls for the owning |
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6075 // thread to block. This has the benefit of forcing a spurious return |
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6076 // from the first park() call after an unpark() call which will help |
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6077 // shake out uses of park() and unpark() without condition variables. |
|
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|
6078 |
|
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|
6079 if (Atomic::xchg(1, &_Event) >= 0) return; |
| 0 | 6080 |
| 6081 // If the thread associated with the event was parked, wake it. | |
|
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6082 // Wait for the thread assoc with the PlatformEvent to vacate. |
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|
6083 int status = os::Solaris::mutex_lock(_mutex); |
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6084 assert_status(status == 0, status, "mutex_lock"); |
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6085 int AnyWaiters = _nParked; |
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6086 status = os::Solaris::mutex_unlock(_mutex); |
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6087 assert_status(status == 0, status, "mutex_unlock"); |
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6088 guarantee(AnyWaiters == 0 || AnyWaiters == 1, "invariant"); |
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6089 if (AnyWaiters != 0) { |
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6090 // We intentional signal *after* dropping the lock |
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6091 // to avoid a common class of futile wakeups. |
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|
6092 status = os::Solaris::cond_signal(_cond); |
|
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|
6093 assert_status(status == 0, status, "cond_signal"); |
| 0 | 6094 } |
| 6095 } | |
| 6096 | |
| 6097 // JSR166 | |
| 6098 // ------------------------------------------------------- | |
| 6099 | |
| 6100 /* | |
| 6101 * The solaris and linux implementations of park/unpark are fairly | |
| 6102 * conservative for now, but can be improved. They currently use a | |
| 6103 * mutex/condvar pair, plus _counter. | |
| 6104 * Park decrements _counter if > 0, else does a condvar wait. Unpark | |
| 6105 * sets count to 1 and signals condvar. Only one thread ever waits | |
| 6106 * on the condvar. Contention seen when trying to park implies that someone | |
| 6107 * is unparking you, so don't wait. And spurious returns are fine, so there | |
| 6108 * is no need to track notifications. | |
| 6109 */ | |
| 6110 | |
| 6111 #define MAX_SECS 100000000 | |
| 6112 /* | |
| 6113 * This code is common to linux and solaris and will be moved to a | |
| 6114 * common place in dolphin. | |
| 6115 * | |
| 6116 * The passed in time value is either a relative time in nanoseconds | |
| 6117 * or an absolute time in milliseconds. Either way it has to be unpacked | |
| 6118 * into suitable seconds and nanoseconds components and stored in the | |
| 6119 * given timespec structure. | |
| 6120 * Given time is a 64-bit value and the time_t used in the timespec is only | |
| 6121 * a signed-32-bit value (except on 64-bit Linux) we have to watch for | |
| 6122 * overflow if times way in the future are given. Further on Solaris versions | |
| 6123 * prior to 10 there is a restriction (see cond_timedwait) that the specified | |
| 6124 * number of seconds, in abstime, is less than current_time + 100,000,000. | |
| 6125 * As it will be 28 years before "now + 100000000" will overflow we can | |
| 6126 * ignore overflow and just impose a hard-limit on seconds using the value | |
| 6127 * of "now + 100,000,000". This places a limit on the timeout of about 3.17 | |
| 6128 * years from "now". | |
| 6129 */ | |
| 6130 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { | |
| 6131 assert (time > 0, "convertTime"); | |
| 6132 | |
| 6133 struct timeval now; | |
| 6134 int status = gettimeofday(&now, NULL); | |
| 6135 assert(status == 0, "gettimeofday"); | |
| 6136 | |
| 6137 time_t max_secs = now.tv_sec + MAX_SECS; | |
| 6138 | |
| 6139 if (isAbsolute) { | |
| 6140 jlong secs = time / 1000; | |
| 6141 if (secs > max_secs) { | |
| 6142 absTime->tv_sec = max_secs; | |
| 6143 } | |
| 6144 else { | |
| 6145 absTime->tv_sec = secs; | |
| 6146 } | |
| 6147 absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; | |
| 6148 } | |
| 6149 else { | |
| 6150 jlong secs = time / NANOSECS_PER_SEC; | |
| 6151 if (secs >= MAX_SECS) { | |
| 6152 absTime->tv_sec = max_secs; | |
| 6153 absTime->tv_nsec = 0; | |
| 6154 } | |
| 6155 else { | |
| 6156 absTime->tv_sec = now.tv_sec + secs; | |
| 6157 absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; | |
| 6158 if (absTime->tv_nsec >= NANOSECS_PER_SEC) { | |
| 6159 absTime->tv_nsec -= NANOSECS_PER_SEC; | |
| 6160 ++absTime->tv_sec; // note: this must be <= max_secs | |
| 6161 } | |
| 6162 } | |
| 6163 } | |
| 6164 assert(absTime->tv_sec >= 0, "tv_sec < 0"); | |
| 6165 assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); | |
| 6166 assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); | |
| 6167 assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); | |
| 6168 } | |
| 6169 | |
| 6170 void Parker::park(bool isAbsolute, jlong time) { | |
|
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6171 // Ideally we'd do something useful while spinning, such |
|
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|
6172 // as calling unpackTime(). |
| 0 | 6173 |
| 6174 // Optional fast-path check: | |
| 6175 // Return immediately if a permit is available. | |
|
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6176 // We depend on Atomic::xchg() having full barrier semantics |
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|
6177 // since we are doing a lock-free update to _counter. |
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|
6178 if (Atomic::xchg(0, &_counter) > 0) return; |
| 0 | 6179 |
| 6180 // Optional fast-exit: Check interrupt before trying to wait | |
| 6181 Thread* thread = Thread::current(); | |
| 6182 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
| 6183 JavaThread *jt = (JavaThread *)thread; | |
| 6184 if (Thread::is_interrupted(thread, false)) { | |
| 6185 return; | |
| 6186 } | |
| 6187 | |
| 6188 // First, demultiplex/decode time arguments | |
| 6189 timespec absTime; | |
|
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|
6190 if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all |
| 0 | 6191 return; |
| 6192 } | |
| 6193 if (time > 0) { | |
| 6194 // Warning: this code might be exposed to the old Solaris time | |
| 6195 // round-down bugs. Grep "roundingFix" for details. | |
| 6196 unpackTime(&absTime, isAbsolute, time); | |
| 6197 } | |
| 6198 | |
| 6199 // Enter safepoint region | |
| 6200 // Beware of deadlocks such as 6317397. | |
| 6201 // The per-thread Parker:: _mutex is a classic leaf-lock. | |
| 6202 // In particular a thread must never block on the Threads_lock while | |
| 6203 // holding the Parker:: mutex. If safepoints are pending both the | |
| 6204 // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. | |
| 6205 ThreadBlockInVM tbivm(jt); | |
| 6206 | |
| 6207 // Don't wait if cannot get lock since interference arises from | |
| 6208 // unblocking. Also. check interrupt before trying wait | |
| 6209 if (Thread::is_interrupted(thread, false) || | |
| 6210 os::Solaris::mutex_trylock(_mutex) != 0) { | |
| 6211 return; | |
| 6212 } | |
| 6213 | |
| 6214 int status ; | |
| 6215 | |
| 6216 if (_counter > 0) { // no wait needed | |
| 6217 _counter = 0; | |
| 6218 status = os::Solaris::mutex_unlock(_mutex); | |
| 6219 assert (status == 0, "invariant") ; | |
|
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6220 // Paranoia to ensure our locked and lock-free paths interact |
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|
6221 // correctly with each other and Java-level accesses. |
|
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|
6222 OrderAccess::fence(); |
| 0 | 6223 return; |
| 6224 } | |
| 6225 | |
| 6226 #ifdef ASSERT | |
| 6227 // Don't catch signals while blocked; let the running threads have the signals. | |
| 6228 // (This allows a debugger to break into the running thread.) | |
| 6229 sigset_t oldsigs; | |
| 6230 sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals(); | |
| 6231 thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); | |
| 6232 #endif | |
| 6233 | |
| 6234 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
| 6235 jt->set_suspend_equivalent(); | |
| 6236 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
| 6237 | |
| 6238 // Do this the hard way by blocking ... | |
| 6239 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
| 6240 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
| 6241 // Only for SPARC >= V8PlusA | |
| 6242 #if defined(__sparc) && defined(COMPILER2) | |
| 6243 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
| 6244 #endif | |
| 6245 | |
| 6246 if (time == 0) { | |
| 6247 status = os::Solaris::cond_wait (_cond, _mutex) ; | |
| 6248 } else { | |
| 6249 status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime); | |
| 6250 } | |
| 6251 // Note that an untimed cond_wait() can sometimes return ETIME on older | |
| 6252 // versions of the Solaris. | |
| 6253 assert_status(status == 0 || status == EINTR || | |
| 6254 status == ETIME || status == ETIMEDOUT, | |
| 6255 status, "cond_timedwait"); | |
| 6256 | |
| 6257 #ifdef ASSERT | |
| 6258 thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL); | |
| 6259 #endif | |
| 6260 _counter = 0 ; | |
| 6261 status = os::Solaris::mutex_unlock(_mutex); | |
| 6262 assert_status(status == 0, status, "mutex_unlock") ; | |
|
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6263 // Paranoia to ensure our locked and lock-free paths interact |
|
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|
6264 // correctly with each other and Java-level accesses. |
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|
6265 OrderAccess::fence(); |
| 0 | 6266 |
| 6267 // If externally suspended while waiting, re-suspend | |
| 6268 if (jt->handle_special_suspend_equivalent_condition()) { | |
| 6269 jt->java_suspend_self(); | |
| 6270 } | |
| 6271 } | |
| 6272 | |
| 6273 void Parker::unpark() { | |
| 6274 int s, status ; | |
| 6275 status = os::Solaris::mutex_lock (_mutex) ; | |
| 6276 assert (status == 0, "invariant") ; | |
| 6277 s = _counter; | |
| 6278 _counter = 1; | |
| 6279 status = os::Solaris::mutex_unlock (_mutex) ; | |
| 6280 assert (status == 0, "invariant") ; | |
| 6281 | |
| 6282 if (s < 1) { | |
| 6283 status = os::Solaris::cond_signal (_cond) ; | |
| 6284 assert (status == 0, "invariant") ; | |
| 6285 } | |
| 6286 } | |
| 6287 | |
| 6288 extern char** environ; | |
| 6289 | |
| 6290 // Run the specified command in a separate process. Return its exit value, | |
| 6291 // or -1 on failure (e.g. can't fork a new process). | |
| 6292 // Unlike system(), this function can be called from signal handler. It | |
| 6293 // doesn't block SIGINT et al. | |
| 6294 int os::fork_and_exec(char* cmd) { | |
| 6295 char * argv[4]; | |
| 6296 argv[0] = (char *)"sh"; | |
| 6297 argv[1] = (char *)"-c"; | |
| 6298 argv[2] = cmd; | |
| 6299 argv[3] = NULL; | |
| 6300 | |
| 6301 // fork is async-safe, fork1 is not so can't use in signal handler | |
| 6302 pid_t pid; | |
| 6303 Thread* t = ThreadLocalStorage::get_thread_slow(); | |
| 6304 if (t != NULL && t->is_inside_signal_handler()) { | |
| 6305 pid = fork(); | |
| 6306 } else { | |
| 6307 pid = fork1(); | |
| 6308 } | |
| 6309 | |
| 6310 if (pid < 0) { | |
| 6311 // fork failed | |
| 6312 warning("fork failed: %s", strerror(errno)); | |
| 6313 return -1; | |
| 6314 | |
| 6315 } else if (pid == 0) { | |
| 6316 // child process | |
| 6317 | |
| 6318 // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris | |
| 6319 execve("/usr/bin/sh", argv, environ); | |
| 6320 | |
| 6321 // execve failed | |
| 6322 _exit(-1); | |
| 6323 | |
| 6324 } else { | |
| 6325 // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't | |
| 6326 // care about the actual exit code, for now. | |
| 6327 | |
| 6328 int status; | |
| 6329 | |
| 6330 // Wait for the child process to exit. This returns immediately if | |
| 6331 // the child has already exited. */ | |
| 6332 while (waitpid(pid, &status, 0) < 0) { | |
| 6333 switch (errno) { | |
| 6334 case ECHILD: return 0; | |
| 6335 case EINTR: break; | |
| 6336 default: return -1; | |
| 6337 } | |
| 6338 } | |
| 6339 | |
| 6340 if (WIFEXITED(status)) { | |
| 6341 // The child exited normally; get its exit code. | |
| 6342 return WEXITSTATUS(status); | |
| 6343 } else if (WIFSIGNALED(status)) { | |
| 6344 // The child exited because of a signal | |
| 6345 // The best value to return is 0x80 + signal number, | |
| 6346 // because that is what all Unix shells do, and because | |
| 6347 // it allows callers to distinguish between process exit and | |
| 6348 // process death by signal. | |
| 6349 return 0x80 + WTERMSIG(status); | |
| 6350 } else { | |
| 6351 // Unknown exit code; pass it through | |
| 6352 return status; | |
| 6353 } | |
| 6354 } | |
| 6355 } | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6356 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6357 // is_headless_jre() |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6358 // |
|
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6359 // Test for the existence of xawt/libmawt.so or libawt_xawt.so |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6360 // in order to report if we are running in a headless jre |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6361 // |
|
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6362 // Since JDK8 xawt/libmawt.so was moved into the same directory |
|
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6363 // as libawt.so, and renamed libawt_xawt.so |
|
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6364 // |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6365 bool os::is_headless_jre() { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6366 struct stat statbuf; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6367 char buf[MAXPATHLEN]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6368 char libmawtpath[MAXPATHLEN]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6369 const char *xawtstr = "/xawt/libmawt.so"; |
|
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6370 const char *new_xawtstr = "/libawt_xawt.so"; |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6371 char *p; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6372 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6373 // Get path to libjvm.so |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6374 os::jvm_path(buf, sizeof(buf)); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6375 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6376 // Get rid of libjvm.so |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6377 p = strrchr(buf, '/'); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6378 if (p == NULL) return false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6379 else *p = '\0'; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6380 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6381 // Get rid of client or server |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6382 p = strrchr(buf, '/'); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6383 if (p == NULL) return false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6384 else *p = '\0'; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6385 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6386 // check xawt/libmawt.so |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6387 strcpy(libmawtpath, buf); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6388 strcat(libmawtpath, xawtstr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6389 if (::stat(libmawtpath, &statbuf) == 0) return false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6390 |
|
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6391 // check libawt_xawt.so |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6392 strcpy(libmawtpath, buf); |
|
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6393 strcat(libmawtpath, new_xawtstr); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6394 if (::stat(libmawtpath, &statbuf) == 0) return false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6395 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6396 return true; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6397 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6398 |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6399 size_t os::write(int fd, const void *buf, unsigned int nBytes) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6400 INTERRUPTIBLE_RETURN_INT(::write(fd, buf, nBytes), os::Solaris::clear_interrupted); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6401 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6402 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6403 int os::close(int fd) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6404 RESTARTABLE_RETURN_INT(::close(fd)); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6405 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6406 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6407 int os::socket_close(int fd) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6408 RESTARTABLE_RETURN_INT(::close(fd)); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6409 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6410 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6411 int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6412 INTERRUPTIBLE_RETURN_INT((int)::recv(fd, buf, nBytes, flags), os::Solaris::clear_interrupted); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6413 } |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6414 |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6415 int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6416 INTERRUPTIBLE_RETURN_INT((int)::send(fd, buf, nBytes, flags), os::Solaris::clear_interrupted); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6417 } |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6418 |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6419 int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6420 RESTARTABLE_RETURN_INT((int)::send(fd, buf, nBytes, flags)); |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6421 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6422 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6423 // As both poll and select can be interrupted by signals, we have to be |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6424 // prepared to restart the system call after updating the timeout, unless |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6425 // a poll() is done with timeout == -1, in which case we repeat with this |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6426 // "wait forever" value. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6427 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6428 int os::timeout(int fd, long timeout) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6429 int res; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6430 struct timeval t; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6431 julong prevtime, newtime; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6432 static const char* aNull = 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6433 struct pollfd pfd; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6434 pfd.fd = fd; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6435 pfd.events = POLLIN; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6436 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6437 gettimeofday(&t, &aNull); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6438 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6439 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6440 for(;;) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6441 INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6442 if(res == OS_ERR && errno == EINTR) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6443 if(timeout != -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6444 gettimeofday(&t, &aNull); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6445 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6446 timeout -= newtime - prevtime; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6447 if(timeout <= 0) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6448 return OS_OK; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6449 prevtime = newtime; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6450 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6451 } else return res; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6452 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6453 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6454 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6455 int os::connect(int fd, struct sockaddr *him, socklen_t len) { |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6456 int _result; |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6457 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,\ |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6458 os::Solaris::clear_interrupted); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6459 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6460 // Depending on when thread interruption is reset, _result could be |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6461 // one of two values when errno == EINTR |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6462 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6463 if (((_result == OS_INTRPT) || (_result == OS_ERR)) |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6464 && (errno == EINTR)) { |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6465 /* restarting a connect() changes its errno semantics */ |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6466 INTERRUPTIBLE(::connect(fd, him, len), _result,\ |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6467 os::Solaris::clear_interrupted); |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6468 /* undo these changes */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6469 if (_result == OS_ERR) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6470 if (errno == EALREADY) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6471 errno = EINPROGRESS; /* fall through */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6472 } else if (errno == EISCONN) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6473 errno = 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6474 return OS_OK; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6475 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6476 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6477 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6478 return _result; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6479 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6480 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6481 int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6482 if (fd < 0) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6483 return OS_ERR; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6484 } |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6485 INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, len),\ |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6486 os::Solaris::clear_interrupted); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6487 } |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6488 |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6489 int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6490 sockaddr* from, socklen_t* fromlen) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6491 INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen),\ |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6492 os::Solaris::clear_interrupted); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6493 } |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6494 |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6495 int os::sendto(int fd, char* buf, size_t len, uint flags, |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6496 struct sockaddr* to, socklen_t tolen) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6497 INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen),\ |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6498 os::Solaris::clear_interrupted); |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6499 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6500 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6501 int os::socket_available(int fd, jint *pbytes) { |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6502 if (fd < 0) { |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6503 return OS_OK; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6504 } |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6505 int ret; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6506 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6507 // note: ioctl can return 0 when successful, JVM_SocketAvailable |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6508 // is expected to return 0 on failure and 1 on success to the jdk. |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6509 return (ret == OS_ERR) ? 0 : 1; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6510 } |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6511 |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6512 int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6513 INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),\ |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6514 os::Solaris::clear_interrupted); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6515 } |
|
6200
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6516 |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6517 // Get the default path to the core file |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6518 // Returns the length of the string |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6519 int os::get_core_path(char* buffer, size_t bufferSize) { |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6520 const char* p = get_current_directory(buffer, bufferSize); |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6521 |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6522 if (p == NULL) { |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6523 assert(p != NULL, "failed to get current directory"); |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6524 return 0; |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6525 } |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6526 |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6527 return strlen(buffer); |
|
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6528 } |