Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/os.cpp @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Mon, 18 Sep 2017 18:49:45 +0200 |
| parents | 719853999215 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 24177 | 2 * Copyright (c) 1997, 2016, 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 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaClasses.hpp" | |
| 28 #include "classfile/systemDictionary.hpp" | |
| 29 #include "classfile/vmSymbols.hpp" | |
| 30 #include "code/icBuffer.hpp" | |
| 31 #include "code/vtableStubs.hpp" | |
| 32 #include "gc_implementation/shared/vmGCOperations.hpp" | |
| 33 #include "interpreter/interpreter.hpp" | |
| 34 #include "memory/allocation.inline.hpp" | |
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35 #ifdef ASSERT |
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36 #include "memory/guardedMemory.hpp" |
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37 #endif |
| 1972 | 38 #include "oops/oop.inline.hpp" |
| 39 #include "prims/jvm.h" | |
| 40 #include "prims/jvm_misc.hpp" | |
| 41 #include "prims/privilegedStack.hpp" | |
| 42 #include "runtime/arguments.hpp" | |
| 43 #include "runtime/frame.inline.hpp" | |
| 44 #include "runtime/interfaceSupport.hpp" | |
| 45 #include "runtime/java.hpp" | |
| 46 #include "runtime/javaCalls.hpp" | |
| 47 #include "runtime/mutexLocker.hpp" | |
| 48 #include "runtime/os.hpp" | |
| 49 #include "runtime/stubRoutines.hpp" | |
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50 #include "runtime/thread.inline.hpp" |
| 1972 | 51 #include "services/attachListener.hpp" |
| 20360 | 52 #include "services/nmtCommon.hpp" |
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53 #include "services/mallocTracker.hpp" |
| 6197 | 54 #include "services/memTracker.hpp" |
| 1972 | 55 #include "services/threadService.hpp" |
| 56 #include "utilities/defaultStream.hpp" | |
| 57 #include "utilities/events.hpp" | |
| 58 #ifdef TARGET_OS_FAMILY_linux | |
| 59 # include "os_linux.inline.hpp" | |
| 60 #endif | |
| 61 #ifdef TARGET_OS_FAMILY_solaris | |
| 62 # include "os_solaris.inline.hpp" | |
| 63 #endif | |
| 64 #ifdef TARGET_OS_FAMILY_windows | |
| 65 # include "os_windows.inline.hpp" | |
| 66 #endif | |
| 3960 | 67 #ifdef TARGET_OS_FAMILY_bsd |
| 68 # include "os_bsd.inline.hpp" | |
| 69 #endif | |
| 0 | 70 |
| 71 # include <signal.h> | |
| 72 | |
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73 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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74 |
| 0 | 75 OSThread* os::_starting_thread = NULL; |
| 76 address os::_polling_page = NULL; | |
| 77 volatile int32_t* os::_mem_serialize_page = NULL; | |
| 78 uintptr_t os::_serialize_page_mask = 0; | |
| 79 long os::_rand_seed = 1; | |
| 80 int os::_processor_count = 0; | |
| 24177 | 81 int os::_initial_active_processor_count = 0; |
| 0 | 82 size_t os::_page_sizes[os::page_sizes_max]; |
| 83 | |
| 84 #ifndef PRODUCT | |
| 2250 | 85 julong os::num_mallocs = 0; // # of calls to malloc/realloc |
| 86 julong os::alloc_bytes = 0; // # of bytes allocated | |
| 87 julong os::num_frees = 0; // # of calls to free | |
| 88 julong os::free_bytes = 0; // # of bytes freed | |
| 0 | 89 #endif |
| 90 | |
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91 static juint cur_malloc_words = 0; // current size for MallocMaxTestWords |
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92 |
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93 void os_init_globals() { |
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94 // Called from init_globals(). |
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95 // See Threads::create_vm() in thread.cpp, and init.cpp. |
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96 os::init_globals(); |
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97 } |
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98 |
| 0 | 99 // Fill in buffer with current local time as an ISO-8601 string. |
| 100 // E.g., yyyy-mm-ddThh:mm:ss-zzzz. | |
| 101 // Returns buffer, or NULL if it failed. | |
| 102 // This would mostly be a call to | |
| 103 // strftime(...., "%Y-%m-%d" "T" "%H:%M:%S" "%z", ....) | |
| 104 // except that on Windows the %z behaves badly, so we do it ourselves. | |
| 105 // Also, people wanted milliseconds on there, | |
| 106 // and strftime doesn't do milliseconds. | |
| 107 char* os::iso8601_time(char* buffer, size_t buffer_length) { | |
| 108 // Output will be of the form "YYYY-MM-DDThh:mm:ss.mmm+zzzz\0" | |
| 109 // 1 2 | |
| 110 // 12345678901234567890123456789 | |
| 111 static const char* iso8601_format = | |
| 112 "%04d-%02d-%02dT%02d:%02d:%02d.%03d%c%02d%02d"; | |
| 113 static const size_t needed_buffer = 29; | |
| 114 | |
| 115 // Sanity check the arguments | |
| 116 if (buffer == NULL) { | |
| 117 assert(false, "NULL buffer"); | |
| 118 return NULL; | |
| 119 } | |
| 120 if (buffer_length < needed_buffer) { | |
| 121 assert(false, "buffer_length too small"); | |
| 122 return NULL; | |
| 123 } | |
| 124 // Get the current time | |
| 61 | 125 jlong milliseconds_since_19700101 = javaTimeMillis(); |
| 0 | 126 const int milliseconds_per_microsecond = 1000; |
| 127 const time_t seconds_since_19700101 = | |
| 128 milliseconds_since_19700101 / milliseconds_per_microsecond; | |
| 129 const int milliseconds_after_second = | |
| 130 milliseconds_since_19700101 % milliseconds_per_microsecond; | |
| 131 // Convert the time value to a tm and timezone variable | |
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132 struct tm time_struct; |
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133 if (localtime_pd(&seconds_since_19700101, &time_struct) == NULL) { |
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134 assert(false, "Failed localtime_pd"); |
| 0 | 135 return NULL; |
| 136 } | |
| 3960 | 137 #if defined(_ALLBSD_SOURCE) |
| 138 const time_t zone = (time_t) time_struct.tm_gmtoff; | |
| 139 #else | |
| 0 | 140 const time_t zone = timezone; |
| 3960 | 141 #endif |
| 0 | 142 |
| 143 // If daylight savings time is in effect, | |
| 144 // we are 1 hour East of our time zone | |
| 145 const time_t seconds_per_minute = 60; | |
| 146 const time_t minutes_per_hour = 60; | |
| 147 const time_t seconds_per_hour = seconds_per_minute * minutes_per_hour; | |
| 148 time_t UTC_to_local = zone; | |
| 149 if (time_struct.tm_isdst > 0) { | |
| 150 UTC_to_local = UTC_to_local - seconds_per_hour; | |
| 151 } | |
| 152 // Compute the time zone offset. | |
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153 // localtime_pd() sets timezone to the difference (in seconds) |
| 0 | 154 // between UTC and and local time. |
| 155 // ISO 8601 says we need the difference between local time and UTC, | |
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156 // we change the sign of the localtime_pd() result. |
| 0 | 157 const time_t local_to_UTC = -(UTC_to_local); |
| 158 // Then we have to figure out if if we are ahead (+) or behind (-) UTC. | |
| 159 char sign_local_to_UTC = '+'; | |
| 160 time_t abs_local_to_UTC = local_to_UTC; | |
| 161 if (local_to_UTC < 0) { | |
| 162 sign_local_to_UTC = '-'; | |
| 163 abs_local_to_UTC = -(abs_local_to_UTC); | |
| 164 } | |
| 165 // Convert time zone offset seconds to hours and minutes. | |
| 166 const time_t zone_hours = (abs_local_to_UTC / seconds_per_hour); | |
| 167 const time_t zone_min = | |
| 168 ((abs_local_to_UTC % seconds_per_hour) / seconds_per_minute); | |
| 169 | |
| 170 // Print an ISO 8601 date and time stamp into the buffer | |
| 171 const int year = 1900 + time_struct.tm_year; | |
| 172 const int month = 1 + time_struct.tm_mon; | |
| 173 const int printed = jio_snprintf(buffer, buffer_length, iso8601_format, | |
| 174 year, | |
| 175 month, | |
| 176 time_struct.tm_mday, | |
| 177 time_struct.tm_hour, | |
| 178 time_struct.tm_min, | |
| 179 time_struct.tm_sec, | |
| 180 milliseconds_after_second, | |
| 181 sign_local_to_UTC, | |
| 182 zone_hours, | |
| 183 zone_min); | |
| 184 if (printed == 0) { | |
| 185 assert(false, "Failed jio_printf"); | |
| 186 return NULL; | |
| 187 } | |
| 188 return buffer; | |
| 189 } | |
| 190 | |
| 191 OSReturn os::set_priority(Thread* thread, ThreadPriority p) { | |
| 192 #ifdef ASSERT | |
| 193 if (!(!thread->is_Java_thread() || | |
| 194 Thread::current() == thread || | |
| 195 Threads_lock->owned_by_self() | |
| 196 || thread->is_Compiler_thread() | |
| 197 )) { | |
| 198 assert(false, "possibility of dangling Thread pointer"); | |
| 199 } | |
| 200 #endif | |
| 201 | |
| 202 if (p >= MinPriority && p <= MaxPriority) { | |
| 203 int priority = java_to_os_priority[p]; | |
| 204 return set_native_priority(thread, priority); | |
| 205 } else { | |
| 206 assert(false, "Should not happen"); | |
| 207 return OS_ERR; | |
| 208 } | |
| 209 } | |
| 210 | |
| 6766 | 211 // The mapping from OS priority back to Java priority may be inexact because |
| 212 // Java priorities can map M:1 with native priorities. If you want the definite | |
| 213 // Java priority then use JavaThread::java_priority() | |
| 0 | 214 OSReturn os::get_priority(const Thread* const thread, ThreadPriority& priority) { |
| 215 int p; | |
| 216 int os_prio; | |
| 217 OSReturn ret = get_native_priority(thread, &os_prio); | |
| 218 if (ret != OS_OK) return ret; | |
| 219 | |
| 6766 | 220 if (java_to_os_priority[MaxPriority] > java_to_os_priority[MinPriority]) { |
| 221 for (p = MaxPriority; p > MinPriority && java_to_os_priority[p] > os_prio; p--) ; | |
| 222 } else { | |
| 223 // niceness values are in reverse order | |
| 224 for (p = MaxPriority; p > MinPriority && java_to_os_priority[p] < os_prio; p--) ; | |
| 225 } | |
| 0 | 226 priority = (ThreadPriority)p; |
| 227 return OS_OK; | |
| 228 } | |
| 229 | |
| 230 | |
| 231 // --------------------- sun.misc.Signal (optional) --------------------- | |
| 232 | |
| 233 | |
| 234 // SIGBREAK is sent by the keyboard to query the VM state | |
| 235 #ifndef SIGBREAK | |
| 236 #define SIGBREAK SIGQUIT | |
| 237 #endif | |
| 238 | |
| 239 // sigexitnum_pd is a platform-specific special signal used for terminating the Signal thread. | |
| 240 | |
| 241 | |
| 242 static void signal_thread_entry(JavaThread* thread, TRAPS) { | |
| 243 os::set_priority(thread, NearMaxPriority); | |
| 244 while (true) { | |
| 245 int sig; | |
| 246 { | |
| 247 // FIXME : Currently we have not decieded what should be the status | |
| 248 // for this java thread blocked here. Once we decide about | |
| 249 // that we should fix this. | |
| 250 sig = os::signal_wait(); | |
| 251 } | |
| 252 if (sig == os::sigexitnum_pd()) { | |
| 253 // Terminate the signal thread | |
| 254 return; | |
| 255 } | |
| 256 | |
| 257 switch (sig) { | |
| 258 case SIGBREAK: { | |
| 259 // Check if the signal is a trigger to start the Attach Listener - in that | |
| 260 // case don't print stack traces. | |
| 261 if (!DisableAttachMechanism && AttachListener::is_init_trigger()) { | |
| 262 continue; | |
| 263 } | |
| 264 // Print stack traces | |
| 265 // Any SIGBREAK operations added here should make sure to flush | |
| 266 // the output stream (e.g. tty->flush()) after output. See 4803766. | |
| 267 // Each module also prints an extra carriage return after its output. | |
| 268 VM_PrintThreads op; | |
| 269 VMThread::execute(&op); | |
| 270 VM_PrintJNI jni_op; | |
| 271 VMThread::execute(&jni_op); | |
| 272 VM_FindDeadlocks op1(tty); | |
| 273 VMThread::execute(&op1); | |
| 274 Universe::print_heap_at_SIGBREAK(); | |
| 275 if (PrintClassHistogram) { | |
| 10405 | 276 VM_GC_HeapInspection op1(gclog_or_tty, true /* force full GC before heap inspection */); |
| 0 | 277 VMThread::execute(&op1); |
| 278 } | |
| 279 if (JvmtiExport::should_post_data_dump()) { | |
| 280 JvmtiExport::post_data_dump(); | |
| 281 } | |
| 282 break; | |
| 283 } | |
| 284 default: { | |
| 285 // Dispatch the signal to java | |
| 286 HandleMark hm(THREAD); | |
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287 Klass* k = SystemDictionary::resolve_or_null(vmSymbols::sun_misc_Signal(), THREAD); |
| 0 | 288 KlassHandle klass (THREAD, k); |
| 289 if (klass.not_null()) { | |
| 290 JavaValue result(T_VOID); | |
| 291 JavaCallArguments args; | |
| 292 args.push_int(sig); | |
| 293 JavaCalls::call_static( | |
| 294 &result, | |
| 295 klass, | |
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296 vmSymbols::dispatch_name(), |
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297 vmSymbols::int_void_signature(), |
| 0 | 298 &args, |
| 299 THREAD | |
| 300 ); | |
| 301 } | |
| 302 if (HAS_PENDING_EXCEPTION) { | |
| 303 // tty is initialized early so we don't expect it to be null, but | |
| 304 // if it is we can't risk doing an initialization that might | |
| 305 // trigger additional out-of-memory conditions | |
| 306 if (tty != NULL) { | |
| 307 char klass_name[256]; | |
| 308 char tmp_sig_name[16]; | |
| 309 const char* sig_name = "UNKNOWN"; | |
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310 InstanceKlass::cast(PENDING_EXCEPTION->klass())-> |
| 0 | 311 name()->as_klass_external_name(klass_name, 256); |
| 312 if (os::exception_name(sig, tmp_sig_name, 16) != NULL) | |
| 313 sig_name = tmp_sig_name; | |
| 314 warning("Exception %s occurred dispatching signal %s to handler" | |
| 315 "- the VM may need to be forcibly terminated", | |
| 316 klass_name, sig_name ); | |
| 317 } | |
| 318 CLEAR_PENDING_EXCEPTION; | |
| 319 } | |
| 320 } | |
| 321 } | |
| 322 } | |
| 323 } | |
| 324 | |
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325 void os::init_before_ergo() { |
| 24177 | 326 initialize_initial_active_processor_count(); |
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327 // We need to initialize large page support here because ergonomics takes some |
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328 // decisions depending on large page support and the calculated large page size. |
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329 large_page_init(); |
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330 |
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331 // VM version initialization identifies some characteristics of the |
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332 // the platform that are used during ergonomic decisions. |
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333 VM_Version::init_before_ergo(); |
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334 } |
| 0 | 335 |
| 336 void os::signal_init() { | |
| 337 if (!ReduceSignalUsage) { | |
| 338 // Setup JavaThread for processing signals | |
| 339 EXCEPTION_MARK; | |
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340 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, CHECK); |
| 0 | 341 instanceKlassHandle klass (THREAD, k); |
| 342 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK); | |
| 343 | |
| 344 const char thread_name[] = "Signal Dispatcher"; | |
| 345 Handle string = java_lang_String::create_from_str(thread_name, CHECK); | |
| 346 | |
| 347 // Initialize thread_oop to put it into the system threadGroup | |
| 348 Handle thread_group (THREAD, Universe::system_thread_group()); | |
| 349 JavaValue result(T_VOID); | |
| 350 JavaCalls::call_special(&result, thread_oop, | |
| 351 klass, | |
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352 vmSymbols::object_initializer_name(), |
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353 vmSymbols::threadgroup_string_void_signature(), |
| 0 | 354 thread_group, |
| 355 string, | |
| 356 CHECK); | |
| 357 | |
| 1142 | 358 KlassHandle group(THREAD, SystemDictionary::ThreadGroup_klass()); |
| 0 | 359 JavaCalls::call_special(&result, |
| 360 thread_group, | |
| 361 group, | |
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362 vmSymbols::add_method_name(), |
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363 vmSymbols::thread_void_signature(), |
| 0 | 364 thread_oop, // ARG 1 |
| 365 CHECK); | |
| 366 | |
| 367 os::signal_init_pd(); | |
| 368 | |
| 369 { MutexLocker mu(Threads_lock); | |
| 370 JavaThread* signal_thread = new JavaThread(&signal_thread_entry); | |
| 371 | |
| 372 // At this point it may be possible that no osthread was created for the | |
| 373 // JavaThread due to lack of memory. We would have to throw an exception | |
| 374 // in that case. However, since this must work and we do not allow | |
| 375 // exceptions anyway, check and abort if this fails. | |
| 376 if (signal_thread == NULL || signal_thread->osthread() == NULL) { | |
| 377 vm_exit_during_initialization("java.lang.OutOfMemoryError", | |
| 378 "unable to create new native thread"); | |
| 379 } | |
| 380 | |
| 381 java_lang_Thread::set_thread(thread_oop(), signal_thread); | |
| 382 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority); | |
| 383 java_lang_Thread::set_daemon(thread_oop()); | |
| 384 | |
| 385 signal_thread->set_threadObj(thread_oop()); | |
| 386 Threads::add(signal_thread); | |
| 387 Thread::start(signal_thread); | |
| 388 } | |
| 389 // Handle ^BREAK | |
| 390 os::signal(SIGBREAK, os::user_handler()); | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 | |
| 395 void os::terminate_signal_thread() { | |
| 396 if (!ReduceSignalUsage) | |
| 397 signal_notify(sigexitnum_pd()); | |
| 398 } | |
| 399 | |
| 400 | |
| 401 // --------------------- loading libraries --------------------- | |
| 402 | |
| 403 typedef jint (JNICALL *JNI_OnLoad_t)(JavaVM *, void *); | |
| 404 extern struct JavaVM_ main_vm; | |
| 405 | |
| 406 static void* _native_java_library = NULL; | |
| 407 | |
| 408 void* os::native_java_library() { | |
| 409 if (_native_java_library == NULL) { | |
| 410 char buffer[JVM_MAXPATHLEN]; | |
| 411 char ebuf[1024]; | |
| 412 | |
| 242 | 413 // Try to load verify dll first. In 1.3 java dll depends on it and is not |
| 414 // always able to find it when the loading executable is outside the JDK. | |
| 0 | 415 // In order to keep working with 1.2 we ignore any loading errors. |
|
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416 if (dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
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417 "verify")) { |
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418 dll_load(buffer, ebuf, sizeof(ebuf)); |
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419 } |
| 0 | 420 |
| 421 // Load java dll | |
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422 if (dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
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423 "java")) { |
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424 _native_java_library = dll_load(buffer, ebuf, sizeof(ebuf)); |
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425 } |
| 0 | 426 if (_native_java_library == NULL) { |
| 427 vm_exit_during_initialization("Unable to load native library", ebuf); | |
| 428 } | |
| 3960 | 429 |
| 430 #if defined(__OpenBSD__) | |
| 431 // Work-around OpenBSD's lack of $ORIGIN support by pre-loading libnet.so | |
| 432 // ignore errors | |
|
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433 if (dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
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434 "net")) { |
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435 dll_load(buffer, ebuf, sizeof(ebuf)); |
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436 } |
| 3960 | 437 #endif |
| 242 | 438 } |
| 439 static jboolean onLoaded = JNI_FALSE; | |
| 440 if (onLoaded) { | |
| 441 // We may have to wait to fire OnLoad until TLS is initialized. | |
| 442 if (ThreadLocalStorage::is_initialized()) { | |
| 443 // The JNI_OnLoad handling is normally done by method load in | |
| 444 // java.lang.ClassLoader$NativeLibrary, but the VM loads the base library | |
| 445 // explicitly so we have to check for JNI_OnLoad as well | |
| 446 const char *onLoadSymbols[] = JNI_ONLOAD_SYMBOLS; | |
| 447 JNI_OnLoad_t JNI_OnLoad = CAST_TO_FN_PTR( | |
| 448 JNI_OnLoad_t, dll_lookup(_native_java_library, onLoadSymbols[0])); | |
| 449 if (JNI_OnLoad != NULL) { | |
| 450 JavaThread* thread = JavaThread::current(); | |
| 451 ThreadToNativeFromVM ttn(thread); | |
| 452 HandleMark hm(thread); | |
| 453 jint ver = (*JNI_OnLoad)(&main_vm, NULL); | |
| 454 onLoaded = JNI_TRUE; | |
| 455 if (!Threads::is_supported_jni_version_including_1_1(ver)) { | |
| 456 vm_exit_during_initialization("Unsupported JNI version"); | |
| 457 } | |
| 0 | 458 } |
| 459 } | |
| 460 } | |
| 461 return _native_java_library; | |
| 462 } | |
| 463 | |
|
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464 /* |
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465 * Support for finding Agent_On(Un)Load/Attach<_lib_name> if it exists. |
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466 * If check_lib == true then we are looking for an |
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467 * Agent_OnLoad_lib_name or Agent_OnAttach_lib_name function to determine if |
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468 * this library is statically linked into the image. |
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469 * If check_lib == false then we will look for the appropriate symbol in the |
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470 * executable if agent_lib->is_static_lib() == true or in the shared library |
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471 * referenced by 'handle'. |
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472 */ |
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473 void* os::find_agent_function(AgentLibrary *agent_lib, bool check_lib, |
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474 const char *syms[], size_t syms_len) { |
| 12220 | 475 assert(agent_lib != NULL, "sanity check"); |
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476 const char *lib_name; |
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477 void *handle = agent_lib->os_lib(); |
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478 void *entryName = NULL; |
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479 char *agent_function_name; |
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480 size_t i; |
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481 |
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482 // If checking then use the agent name otherwise test is_static_lib() to |
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483 // see how to process this lookup |
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484 lib_name = ((check_lib || agent_lib->is_static_lib()) ? agent_lib->name() : NULL); |
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485 for (i = 0; i < syms_len; i++) { |
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486 agent_function_name = build_agent_function_name(syms[i], lib_name, agent_lib->is_absolute_path()); |
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487 if (agent_function_name == NULL) { |
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488 break; |
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489 } |
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490 entryName = dll_lookup(handle, agent_function_name); |
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491 FREE_C_HEAP_ARRAY(char, agent_function_name, mtThread); |
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492 if (entryName != NULL) { |
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493 break; |
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494 } |
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495 } |
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496 return entryName; |
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497 } |
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498 |
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499 // See if the passed in agent is statically linked into the VM image. |
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500 bool os::find_builtin_agent(AgentLibrary *agent_lib, const char *syms[], |
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501 size_t syms_len) { |
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502 void *ret; |
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503 void *proc_handle; |
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504 void *save_handle; |
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505 |
| 12220 | 506 assert(agent_lib != NULL, "sanity check"); |
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507 if (agent_lib->name() == NULL) { |
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508 return false; |
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509 } |
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510 proc_handle = get_default_process_handle(); |
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511 // Check for Agent_OnLoad/Attach_lib_name function |
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512 save_handle = agent_lib->os_lib(); |
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513 // We want to look in this process' symbol table. |
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514 agent_lib->set_os_lib(proc_handle); |
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515 ret = find_agent_function(agent_lib, true, syms, syms_len); |
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516 if (ret != NULL) { |
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517 // Found an entry point like Agent_OnLoad_lib_name so we have a static agent |
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518 agent_lib->set_valid(); |
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519 agent_lib->set_static_lib(true); |
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520 return true; |
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521 } |
| 12220 | 522 agent_lib->set_os_lib(save_handle); |
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523 return false; |
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524 } |
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525 |
| 0 | 526 // --------------------- heap allocation utilities --------------------- |
| 527 | |
| 6197 | 528 char *os::strdup(const char *str, MEMFLAGS flags) { |
| 0 | 529 size_t size = strlen(str); |
| 6197 | 530 char *dup_str = (char *)malloc(size + 1, flags); |
| 0 | 531 if (dup_str == NULL) return NULL; |
| 532 strcpy(dup_str, str); | |
| 533 return dup_str; | |
| 534 } | |
| 535 | |
| 536 | |
| 537 | |
| 538 #define paranoid 0 /* only set to 1 if you suspect checking code has bug */ | |
| 539 | |
| 540 #ifdef ASSERT | |
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541 static void verify_memory(void* ptr) { |
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542 GuardedMemory guarded(ptr); |
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543 if (!guarded.verify_guards()) { |
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544 tty->print_cr("## nof_mallocs = " UINT64_FORMAT ", nof_frees = " UINT64_FORMAT, os::num_mallocs, os::num_frees); |
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545 tty->print_cr("## memory stomp:"); |
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546 guarded.print_on(tty); |
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547 fatal("memory stomping error"); |
| 0 | 548 } |
| 549 } | |
| 550 #endif | |
| 551 | |
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552 // |
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553 // This function supports testing of the malloc out of memory |
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554 // condition without really running the system out of memory. |
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555 // |
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556 static u_char* testMalloc(size_t alloc_size) { |
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557 assert(MallocMaxTestWords > 0, "sanity check"); |
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558 |
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559 if ((cur_malloc_words + (alloc_size / BytesPerWord)) > MallocMaxTestWords) { |
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560 return NULL; |
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561 } |
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562 |
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563 u_char* ptr = (u_char*)::malloc(alloc_size); |
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564 |
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565 if (ptr != NULL) { |
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566 Atomic::add(((jint) (alloc_size / BytesPerWord)), |
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567 (volatile jint *) &cur_malloc_words); |
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568 } |
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569 return ptr; |
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570 } |
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571 |
| 20360 | 572 void* os::malloc(size_t size, MEMFLAGS flags) { |
| 573 return os::malloc(size, flags, CALLER_PC); | |
| 574 } | |
| 575 | |
| 576 void* os::malloc(size_t size, MEMFLAGS memflags, const NativeCallStack& stack) { | |
| 2250 | 577 NOT_PRODUCT(inc_stat_counter(&num_mallocs, 1)); |
| 578 NOT_PRODUCT(inc_stat_counter(&alloc_bytes, size)); | |
| 0 | 579 |
| 11151 | 580 #ifdef ASSERT |
| 581 // checking for the WatcherThread and crash_protection first | |
| 582 // since os::malloc can be called when the libjvm.{dll,so} is | |
| 583 // first loaded and we don't have a thread yet. | |
| 584 // try to find the thread after we see that the watcher thread | |
| 585 // exists and has crash protection. | |
| 586 WatcherThread *wt = WatcherThread::watcher_thread(); | |
| 587 if (wt != NULL && wt->has_crash_protection()) { | |
| 588 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
| 589 if (thread == wt) { | |
| 590 assert(!wt->has_crash_protection(), | |
| 591 "Can't malloc with crash protection from WatcherThread"); | |
| 592 } | |
| 593 } | |
| 594 #endif | |
| 595 | |
| 0 | 596 if (size == 0) { |
| 597 // return a valid pointer if size is zero | |
| 598 // if NULL is returned the calling functions assume out of memory. | |
| 599 size = 1; | |
| 600 } | |
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601 |
| 20360 | 602 // NMT support |
| 603 NMT_TrackingLevel level = MemTracker::tracking_level(); | |
| 604 size_t nmt_header_size = MemTracker::malloc_header_size(level); | |
| 605 | |
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606 #ifndef ASSERT |
| 20360 | 607 const size_t alloc_size = size + nmt_header_size; |
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608 #else |
| 20360 | 609 const size_t alloc_size = GuardedMemory::get_total_size(size + nmt_header_size); |
| 610 if (size + nmt_header_size > alloc_size) { // Check for rollover. | |
|
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611 return NULL; |
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612 } |
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613 #endif |
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614 |
| 0 | 615 NOT_PRODUCT(if (MallocVerifyInterval > 0) check_heap()); |
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616 |
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617 u_char* ptr; |
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618 if (MallocMaxTestWords > 0) { |
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619 ptr = testMalloc(alloc_size); |
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620 } else { |
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621 ptr = (u_char*)::malloc(alloc_size); |
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622 } |
| 6197 | 623 |
| 0 | 624 #ifdef ASSERT |
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625 if (ptr == NULL) { |
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626 return NULL; |
| 0 | 627 } |
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628 // Wrap memory with guard |
| 20360 | 629 GuardedMemory guarded(ptr, size + nmt_header_size); |
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630 ptr = guarded.get_user_ptr(); |
| 0 | 631 #endif |
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632 if ((intptr_t)ptr == (intptr_t)MallocCatchPtr) { |
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633 tty->print_cr("os::malloc caught, " SIZE_FORMAT " bytes --> " PTR_FORMAT, size, ptr); |
| 0 | 634 breakpoint(); |
| 635 } | |
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636 debug_only(if (paranoid) verify_memory(ptr)); |
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637 if (PrintMalloc && tty != NULL) { |
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638 tty->print_cr("os::malloc " SIZE_FORMAT " bytes --> " PTR_FORMAT, size, ptr); |
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639 } |
| 6197 | 640 |
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641 // we do not track guard memory |
| 20360 | 642 return MemTracker::record_malloc((address)ptr, size, memflags, stack, level); |
| 0 | 643 } |
| 644 | |
| 20360 | 645 void* os::realloc(void *memblock, size_t size, MEMFLAGS flags) { |
| 646 return os::realloc(memblock, size, flags, CALLER_PC); | |
| 647 } | |
| 0 | 648 |
| 20360 | 649 void* os::realloc(void *memblock, size_t size, MEMFLAGS memflags, const NativeCallStack& stack) { |
|
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650 |
| 0 | 651 #ifndef ASSERT |
| 2250 | 652 NOT_PRODUCT(inc_stat_counter(&num_mallocs, 1)); |
| 653 NOT_PRODUCT(inc_stat_counter(&alloc_bytes, size)); | |
| 20360 | 654 // NMT support |
| 655 void* membase = MemTracker::record_free(memblock); | |
| 656 NMT_TrackingLevel level = MemTracker::tracking_level(); | |
| 657 size_t nmt_header_size = MemTracker::malloc_header_size(level); | |
| 658 void* ptr = ::realloc(membase, size + nmt_header_size); | |
| 659 return MemTracker::record_malloc(ptr, size, memflags, stack, level); | |
| 0 | 660 #else |
| 661 if (memblock == NULL) { | |
| 20360 | 662 return os::malloc(size, memflags, stack); |
| 0 | 663 } |
| 664 if ((intptr_t)memblock == (intptr_t)MallocCatchPtr) { | |
| 2250 | 665 tty->print_cr("os::realloc caught " PTR_FORMAT, memblock); |
| 0 | 666 breakpoint(); |
| 667 } | |
| 20360 | 668 // NMT support |
| 669 void* membase = MemTracker::malloc_base(memblock); | |
| 670 verify_memory(membase); | |
| 0 | 671 NOT_PRODUCT(if (MallocVerifyInterval > 0) check_heap()); |
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672 if (size == 0) { |
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673 return NULL; |
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674 } |
| 0 | 675 // always move the block |
| 20360 | 676 void* ptr = os::malloc(size, memflags, stack); |
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677 if (PrintMalloc) { |
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678 tty->print_cr("os::remalloc " SIZE_FORMAT " bytes, " PTR_FORMAT " --> " PTR_FORMAT, size, memblock, ptr); |
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679 } |
| 0 | 680 // Copy to new memory if malloc didn't fail |
| 681 if ( ptr != NULL ) { | |
| 20360 | 682 GuardedMemory guarded(MemTracker::malloc_base(memblock)); |
| 683 // Guard's user data contains NMT header | |
| 684 size_t memblock_size = guarded.get_user_size() - MemTracker::malloc_header_size(memblock); | |
| 685 memcpy(ptr, memblock, MIN2(size, memblock_size)); | |
| 686 if (paranoid) verify_memory(MemTracker::malloc_base(ptr)); | |
| 0 | 687 if ((intptr_t)ptr == (intptr_t)MallocCatchPtr) { |
| 2250 | 688 tty->print_cr("os::realloc caught, " SIZE_FORMAT " bytes --> " PTR_FORMAT, size, ptr); |
| 0 | 689 breakpoint(); |
| 690 } | |
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691 os::free(memblock); |
| 0 | 692 } |
| 693 return ptr; | |
| 694 #endif | |
| 695 } | |
| 696 | |
| 697 | |
| 6197 | 698 void os::free(void *memblock, MEMFLAGS memflags) { |
| 2250 | 699 NOT_PRODUCT(inc_stat_counter(&num_frees, 1)); |
| 0 | 700 #ifdef ASSERT |
| 701 if (memblock == NULL) return; | |
| 702 if ((intptr_t)memblock == (intptr_t)MallocCatchPtr) { | |
| 2250 | 703 if (tty != NULL) tty->print_cr("os::free caught " PTR_FORMAT, memblock); |
| 0 | 704 breakpoint(); |
| 705 } | |
| 20360 | 706 void* membase = MemTracker::record_free(memblock); |
| 707 verify_memory(membase); | |
| 0 | 708 NOT_PRODUCT(if (MallocVerifyInterval > 0) check_heap()); |
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709 |
| 20360 | 710 GuardedMemory guarded(membase); |
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711 size_t size = guarded.get_user_size(); |
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712 inc_stat_counter(&free_bytes, size); |
| 20360 | 713 membase = guarded.release_for_freeing(); |
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714 if (PrintMalloc && tty != NULL) { |
| 20360 | 715 fprintf(stderr, "os::free " SIZE_FORMAT " bytes --> " PTR_FORMAT "\n", size, (uintptr_t)membase); |
| 0 | 716 } |
| 20360 | 717 ::free(membase); |
| 718 #else | |
| 719 void* membase = MemTracker::record_free(memblock); | |
| 720 ::free(membase); | |
| 0 | 721 #endif |
| 722 } | |
| 723 | |
| 724 void os::init_random(long initval) { | |
| 725 _rand_seed = initval; | |
| 726 } | |
| 727 | |
| 728 | |
| 729 long os::random() { | |
| 730 /* standard, well-known linear congruential random generator with | |
| 731 * next_rand = (16807*seed) mod (2**31-1) | |
| 732 * see | |
| 733 * (1) "Random Number Generators: Good Ones Are Hard to Find", | |
| 734 * S.K. Park and K.W. Miller, Communications of the ACM 31:10 (Oct 1988), | |
| 735 * (2) "Two Fast Implementations of the 'Minimal Standard' Random | |
| 736 * Number Generator", David G. Carta, Comm. ACM 33, 1 (Jan 1990), pp. 87-88. | |
| 737 */ | |
| 738 const long a = 16807; | |
| 739 const unsigned long m = 2147483647; | |
| 740 const long q = m / a; assert(q == 127773, "weird math"); | |
| 741 const long r = m % a; assert(r == 2836, "weird math"); | |
| 742 | |
| 743 // compute az=2^31p+q | |
| 744 unsigned long lo = a * (long)(_rand_seed & 0xFFFF); | |
| 745 unsigned long hi = a * (long)((unsigned long)_rand_seed >> 16); | |
| 746 lo += (hi & 0x7FFF) << 16; | |
| 747 | |
| 748 // if q overflowed, ignore the overflow and increment q | |
| 749 if (lo > m) { | |
| 750 lo &= m; | |
| 751 ++lo; | |
| 752 } | |
| 753 lo += hi >> 15; | |
| 754 | |
| 755 // if (p+q) overflowed, ignore the overflow and increment (p+q) | |
| 756 if (lo > m) { | |
| 757 lo &= m; | |
| 758 ++lo; | |
| 759 } | |
| 760 return (_rand_seed = lo); | |
| 761 } | |
| 762 | |
| 763 // The INITIALIZED state is distinguished from the SUSPENDED state because the | |
| 764 // conditions in which a thread is first started are different from those in which | |
| 765 // a suspension is resumed. These differences make it hard for us to apply the | |
| 766 // tougher checks when starting threads that we want to do when resuming them. | |
| 767 // However, when start_thread is called as a result of Thread.start, on a Java | |
| 768 // thread, the operation is synchronized on the Java Thread object. So there | |
| 769 // cannot be a race to start the thread and hence for the thread to exit while | |
| 770 // we are working on it. Non-Java threads that start Java threads either have | |
| 771 // to do so in a context in which races are impossible, or should do appropriate | |
| 772 // locking. | |
| 773 | |
| 774 void os::start_thread(Thread* thread) { | |
| 775 // guard suspend/resume | |
| 776 MutexLockerEx ml(thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 777 OSThread* osthread = thread->osthread(); | |
| 778 osthread->set_state(RUNNABLE); | |
| 779 pd_start_thread(thread); | |
| 780 } | |
| 781 | |
| 782 //--------------------------------------------------------------------------- | |
| 783 // Helper functions for fatal error handler | |
| 784 | |
| 785 void os::print_hex_dump(outputStream* st, address start, address end, int unitsize) { | |
| 786 assert(unitsize == 1 || unitsize == 2 || unitsize == 4 || unitsize == 8, "just checking"); | |
| 787 | |
| 788 int cols = 0; | |
| 789 int cols_per_line = 0; | |
| 790 switch (unitsize) { | |
| 791 case 1: cols_per_line = 16; break; | |
| 792 case 2: cols_per_line = 8; break; | |
| 793 case 4: cols_per_line = 4; break; | |
| 794 case 8: cols_per_line = 2; break; | |
| 795 default: return; | |
| 796 } | |
| 797 | |
| 798 address p = start; | |
| 799 st->print(PTR_FORMAT ": ", start); | |
| 800 while (p < end) { | |
| 801 switch (unitsize) { | |
| 802 case 1: st->print("%02x", *(u1*)p); break; | |
| 803 case 2: st->print("%04x", *(u2*)p); break; | |
| 804 case 4: st->print("%08x", *(u4*)p); break; | |
| 805 case 8: st->print("%016" FORMAT64_MODIFIER "x", *(u8*)p); break; | |
| 806 } | |
| 807 p += unitsize; | |
| 808 cols++; | |
| 809 if (cols >= cols_per_line && p < end) { | |
| 810 cols = 0; | |
| 811 st->cr(); | |
| 812 st->print(PTR_FORMAT ": ", p); | |
| 813 } else { | |
| 814 st->print(" "); | |
| 815 } | |
| 816 } | |
| 817 st->cr(); | |
| 818 } | |
| 819 | |
| 820 void os::print_environment_variables(outputStream* st, const char** env_list, | |
| 821 char* buffer, int len) { | |
| 822 if (env_list) { | |
| 823 st->print_cr("Environment Variables:"); | |
| 824 | |
| 825 for (int i = 0; env_list[i] != NULL; i++) { | |
| 826 if (getenv(env_list[i], buffer, len)) { | |
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827 st->print("%s", env_list[i]); |
| 0 | 828 st->print("="); |
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829 st->print_cr("%s", buffer); |
| 0 | 830 } |
| 831 } | |
| 832 } | |
| 833 } | |
| 834 | |
| 835 void os::print_cpu_info(outputStream* st) { | |
| 836 // cpu | |
| 837 st->print("CPU:"); | |
| 838 st->print("total %d", os::processor_count()); | |
| 839 // It's not safe to query number of active processors after crash | |
| 24177 | 840 // st->print("(active %d)", os::active_processor_count()); but we can |
| 841 // print the initial number of active processors. | |
| 842 // We access the raw value here because the assert in the accessor will | |
| 843 // fail if the crash occurs before initialization of this value. | |
| 844 st->print(" (initial active %d)", _initial_active_processor_count); | |
| 0 | 845 st->print(" %s", VM_Version::cpu_features()); |
| 846 st->cr(); | |
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847 pd_print_cpu_info(st); |
| 0 | 848 } |
| 849 | |
| 850 void os::print_date_and_time(outputStream *st) { | |
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851 const int secs_per_day = 86400; |
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852 const int secs_per_hour = 3600; |
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853 const int secs_per_min = 60; |
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854 |
| 0 | 855 time_t tloc; |
| 856 (void)time(&tloc); | |
| 857 st->print("time: %s", ctime(&tloc)); // ctime adds newline. | |
| 858 | |
| 859 double t = os::elapsedTime(); | |
| 860 // NOTE: It tends to crash after a SEGV if we want to printf("%f",...) in | |
| 861 // Linux. Must be a bug in glibc ? Workaround is to round "t" to int | |
| 862 // before printf. We lost some precision, but who cares? | |
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863 int eltime = (int)t; // elapsed time in seconds |
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864 |
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865 // print elapsed time in a human-readable format: |
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866 int eldays = eltime / secs_per_day; |
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867 int day_secs = eldays * secs_per_day; |
|
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8026334: hs_err improvement: Print elapsed time in a humanly readable format
dbuck
parents:
17799
diff
changeset
|
868 int elhours = (eltime - day_secs) / secs_per_hour; |
|
5cf196cc5405
8026334: hs_err improvement: Print elapsed time in a humanly readable format
dbuck
parents:
17799
diff
changeset
|
869 int hour_secs = elhours * secs_per_hour; |
|
5cf196cc5405
8026334: hs_err improvement: Print elapsed time in a humanly readable format
dbuck
parents:
17799
diff
changeset
|
870 int elmins = (eltime - day_secs - hour_secs) / secs_per_min; |
|
5cf196cc5405
8026334: hs_err improvement: Print elapsed time in a humanly readable format
dbuck
parents:
17799
diff
changeset
|
871 int minute_secs = elmins * secs_per_min; |
|
5cf196cc5405
8026334: hs_err improvement: Print elapsed time in a humanly readable format
dbuck
parents:
17799
diff
changeset
|
872 int elsecs = (eltime - day_secs - hour_secs - minute_secs); |
|
5cf196cc5405
8026334: hs_err improvement: Print elapsed time in a humanly readable format
dbuck
parents:
17799
diff
changeset
|
873 st->print_cr("elapsed time: %d seconds (%dd %dh %dm %ds)", eltime, eldays, elhours, elmins, elsecs); |
| 0 | 874 } |
| 875 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
876 // moved from debug.cpp (used to be find()) but still called from there |
| 1907 | 877 // The verbose parameter is only set by the debug code in one case |
| 878 void os::print_location(outputStream* st, intptr_t x, bool verbose) { | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
879 address addr = (address)x; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
880 CodeBlob* b = CodeCache::find_blob_unsafe(addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
881 if (b != NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
882 if (b->is_buffer_blob()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
883 // the interpreter is generated into a buffer blob |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
884 InterpreterCodelet* i = Interpreter::codelet_containing(addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
885 if (i != NULL) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
886 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an Interpreter codelet", addr, (int)(addr - i->code_begin())); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
887 i->print_on(st); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
888 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
889 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
890 if (Interpreter::contains(addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
891 st->print_cr(INTPTR_FORMAT " is pointing into interpreter code" |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
892 " (not bytecode specific)", addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
893 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
894 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
895 // |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
896 if (AdapterHandlerLibrary::contains(b)) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
897 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an AdapterHandler", addr, (int)(addr - b->code_begin())); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
898 AdapterHandlerLibrary::print_handler_on(st, b); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
899 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
900 // the stubroutines are generated into a buffer blob |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
901 StubCodeDesc* d = StubCodeDesc::desc_for(addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
902 if (d != NULL) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
903 st->print_cr(INTPTR_FORMAT " is at begin+%d in a stub", addr, (int)(addr - d->begin())); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
904 d->print_on(st); |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
905 st->cr(); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
906 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
907 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
908 if (StubRoutines::contains(addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
909 st->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) " |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
910 "stub routine", addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
911 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
912 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
913 // the InlineCacheBuffer is using stubs generated into a buffer blob |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
914 if (InlineCacheBuffer::contains(addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
915 st->print_cr(INTPTR_FORMAT " is pointing into InlineCacheBuffer", addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
916 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
917 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
918 VtableStub* v = VtableStubs::stub_containing(addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
919 if (v != NULL) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
920 st->print_cr(INTPTR_FORMAT " is at entry_point+%d in a vtable stub", addr, (int)(addr - v->entry_point())); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
921 v->print_on(st); |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
922 st->cr(); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
923 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
924 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
925 } |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
926 nmethod* nm = b->as_nmethod_or_null(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
927 if (nm != NULL) { |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
928 ResourceMark rm; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
929 st->print(INTPTR_FORMAT " is at entry_point+%d in (nmethod*)" INTPTR_FORMAT, |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
930 addr, (int)(addr - nm->entry_point()), nm); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
931 if (verbose) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
932 st->print(" for "); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
933 nm->method()->print_value_on(st); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
934 } |
|
6816
87ac5c0a404d
8000228: Missing call to cr() when printing entry_point in nmethod, in os::print_location
stefank
parents:
6814
diff
changeset
|
935 st->cr(); |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
936 nm->print_nmethod(verbose); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
937 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
938 } |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
939 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in ", addr, (int)(addr - b->code_begin())); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
940 b->print_on(st); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
941 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
942 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
943 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
944 if (Universe::heap()->is_in(addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
945 HeapWord* p = Universe::heap()->block_start(addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
946 bool print = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
947 // If we couldn't find it it just may mean that heap wasn't parseable |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
948 // See if we were just given an oop directly |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
949 if (p != NULL && Universe::heap()->block_is_obj(p)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
950 print = true; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
951 } else if (p == NULL && ((oopDesc*)addr)->is_oop()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
952 p = (HeapWord*) addr; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
953 print = true; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
954 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
955 if (print) { |
|
6814
85f1cded9793
8000230: Change os::print_location to be more descriptive when a location is pointing into an object
stefank
parents:
6766
diff
changeset
|
956 if (p == (HeapWord*) addr) { |
|
85f1cded9793
8000230: Change os::print_location to be more descriptive when a location is pointing into an object
stefank
parents:
6766
diff
changeset
|
957 st->print_cr(INTPTR_FORMAT " is an oop", addr); |
|
85f1cded9793
8000230: Change os::print_location to be more descriptive when a location is pointing into an object
stefank
parents:
6766
diff
changeset
|
958 } else { |
|
85f1cded9793
8000230: Change os::print_location to be more descriptive when a location is pointing into an object
stefank
parents:
6766
diff
changeset
|
959 st->print_cr(INTPTR_FORMAT " is pointing into object: " INTPTR_FORMAT, addr, p); |
|
85f1cded9793
8000230: Change os::print_location to be more descriptive when a location is pointing into an object
stefank
parents:
6766
diff
changeset
|
960 } |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
961 oop(p)->print_on(st); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
962 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
963 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
964 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
965 if (Universe::heap()->is_in_reserved(addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
966 st->print_cr(INTPTR_FORMAT " is an unallocated location " |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
967 "in the heap", addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
968 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
969 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
970 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
971 if (JNIHandles::is_global_handle((jobject) addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
972 st->print_cr(INTPTR_FORMAT " is a global jni handle", addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
973 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
974 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
975 if (JNIHandles::is_weak_global_handle((jobject) addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
976 st->print_cr(INTPTR_FORMAT " is a weak global jni handle", addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
977 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
978 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
979 #ifndef PRODUCT |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
980 // we don't keep the block list in product mode |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
981 if (JNIHandleBlock::any_contains((jobject) addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
982 st->print_cr(INTPTR_FORMAT " is a local jni handle", addr); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
983 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
984 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
985 #endif |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
986 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
987 for(JavaThread *thread = Threads::first(); thread; thread = thread->next()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
988 // Check for privilege stack |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
989 if (thread->privileged_stack_top() != NULL && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
990 thread->privileged_stack_top()->contains(addr)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
991 st->print_cr(INTPTR_FORMAT " is pointing into the privilege stack " |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
992 "for thread: " INTPTR_FORMAT, addr, thread); |
| 1907 | 993 if (verbose) thread->print_on(st); |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
994 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
995 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
996 // If the addr is a java thread print information about that. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
997 if (addr == (address)thread) { |
| 1907 | 998 if (verbose) { |
| 999 thread->print_on(st); | |
| 1000 } else { | |
| 1001 st->print_cr(INTPTR_FORMAT " is a thread", addr); | |
| 1002 } | |
|
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1003 return; |
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1004 } |
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1005 // If the addr is in the stack region for this thread then report that |
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1006 // and print thread info |
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1007 if (thread->stack_base() >= addr && |
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1008 addr > (thread->stack_base() - thread->stack_size())) { |
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1009 st->print_cr(INTPTR_FORMAT " is pointing into the stack for thread: " |
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1010 INTPTR_FORMAT, addr, thread); |
| 1907 | 1011 if (verbose) thread->print_on(st); |
|
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1012 return; |
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1013 } |
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1014 |
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1015 } |
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1016 |
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1017 // Check if in metaspace and print types that have vptrs (only method now) |
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1018 if (Metaspace::contains(addr)) { |
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1019 if (Method::has_method_vptr((const void*)addr)) { |
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1020 ((Method*)addr)->print_value_on(st); |
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1021 st->cr(); |
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1022 } else { |
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1023 // Use addr->print() from the debugger instead (not here) |
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1024 st->print_cr(INTPTR_FORMAT " is pointing into metadata", addr); |
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1025 } |
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1026 return; |
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1027 } |
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1028 |
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1029 // Try an OS specific find |
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1030 if (os::find(addr, st)) { |
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1031 return; |
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1032 } |
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1033 |
| 1907 | 1034 st->print_cr(INTPTR_FORMAT " is an unknown value", addr); |
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1035 } |
| 0 | 1036 |
| 1037 // Looks like all platforms except IA64 can use the same function to check | |
| 1038 // if C stack is walkable beyond current frame. The check for fp() is not | |
| 1039 // necessary on Sparc, but it's harmless. | |
| 1040 bool os::is_first_C_frame(frame* fr) { | |
|
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1041 #if (defined(IA64) && !defined(AIX)) && !defined(_WIN32) |
| 7994 | 1042 // On IA64 we have to check if the callers bsp is still valid |
| 1043 // (i.e. within the register stack bounds). | |
| 1044 // Notice: this only works for threads created by the VM and only if | |
| 1045 // we walk the current stack!!! If we want to be able to walk | |
| 1046 // arbitrary other threads, we'll have to somehow store the thread | |
| 1047 // object in the frame. | |
| 1048 Thread *thread = Thread::current(); | |
| 1049 if ((address)fr->fp() <= | |
| 1050 thread->register_stack_base() HPUX_ONLY(+ 0x0) LINUX_ONLY(+ 0x50)) { | |
| 1051 // This check is a little hacky, because on Linux the first C | |
| 1052 // frame's ('start_thread') register stack frame starts at | |
| 1053 // "register_stack_base + 0x48" while on HPUX, the first C frame's | |
| 1054 // ('__pthread_bound_body') register stack frame seems to really | |
| 1055 // start at "register_stack_base". | |
| 1056 return true; | |
| 1057 } else { | |
| 1058 return false; | |
| 1059 } | |
| 1060 #elif defined(IA64) && defined(_WIN32) | |
| 0 | 1061 return true; |
| 7994 | 1062 #else |
| 0 | 1063 // Load up sp, fp, sender sp and sender fp, check for reasonable values. |
| 1064 // Check usp first, because if that's bad the other accessors may fault | |
| 1065 // on some architectures. Ditto ufp second, etc. | |
| 1066 uintptr_t fp_align_mask = (uintptr_t)(sizeof(address)-1); | |
| 1067 // sp on amd can be 32 bit aligned. | |
| 1068 uintptr_t sp_align_mask = (uintptr_t)(sizeof(int)-1); | |
| 1069 | |
| 1070 uintptr_t usp = (uintptr_t)fr->sp(); | |
| 1071 if ((usp & sp_align_mask) != 0) return true; | |
| 1072 | |
| 1073 uintptr_t ufp = (uintptr_t)fr->fp(); | |
| 1074 if ((ufp & fp_align_mask) != 0) return true; | |
| 1075 | |
| 1076 uintptr_t old_sp = (uintptr_t)fr->sender_sp(); | |
| 1077 if ((old_sp & sp_align_mask) != 0) return true; | |
| 1078 if (old_sp == 0 || old_sp == (uintptr_t)-1) return true; | |
| 1079 | |
| 1080 uintptr_t old_fp = (uintptr_t)fr->link(); | |
| 1081 if ((old_fp & fp_align_mask) != 0) return true; | |
| 1082 if (old_fp == 0 || old_fp == (uintptr_t)-1 || old_fp == ufp) return true; | |
| 1083 | |
| 1084 // stack grows downwards; if old_fp is below current fp or if the stack | |
| 1085 // frame is too large, either the stack is corrupted or fp is not saved | |
| 1086 // on stack (i.e. on x86, ebp may be used as general register). The stack | |
| 1087 // is not walkable beyond current frame. | |
| 1088 if (old_fp < ufp) return true; | |
| 1089 if (old_fp - ufp > 64 * K) return true; | |
| 1090 | |
| 1091 return false; | |
| 7994 | 1092 #endif |
| 0 | 1093 } |
| 1094 | |
| 1095 #ifdef ASSERT | |
| 1096 extern "C" void test_random() { | |
| 1097 const double m = 2147483647; | |
| 1098 double mean = 0.0, variance = 0.0, t; | |
| 1099 long reps = 10000; | |
| 1100 unsigned long seed = 1; | |
| 1101 | |
| 1102 tty->print_cr("seed %ld for %ld repeats...", seed, reps); | |
| 1103 os::init_random(seed); | |
| 1104 long num; | |
| 1105 for (int k = 0; k < reps; k++) { | |
| 1106 num = os::random(); | |
| 1107 double u = (double)num / m; | |
| 1108 assert(u >= 0.0 && u <= 1.0, "bad random number!"); | |
| 1109 | |
| 1110 // calculate mean and variance of the random sequence | |
| 1111 mean += u; | |
| 1112 variance += (u*u); | |
| 1113 } | |
| 1114 mean /= reps; | |
| 1115 variance /= (reps - 1); | |
| 1116 | |
| 1117 assert(num == 1043618065, "bad seed"); | |
| 1118 tty->print_cr("mean of the 1st 10000 numbers: %f", mean); | |
| 1119 tty->print_cr("variance of the 1st 10000 numbers: %f", variance); | |
| 1120 const double eps = 0.0001; | |
| 1121 t = fabsd(mean - 0.5018); | |
| 1122 assert(t < eps, "bad mean"); | |
| 1123 t = (variance - 0.3355) < 0.0 ? -(variance - 0.3355) : variance - 0.3355; | |
| 1124 assert(t < eps, "bad variance"); | |
| 1125 } | |
| 1126 #endif | |
| 1127 | |
| 1128 | |
| 1129 // Set up the boot classpath. | |
| 1130 | |
| 1131 char* os::format_boot_path(const char* format_string, | |
| 1132 const char* home, | |
| 1133 int home_len, | |
| 1134 char fileSep, | |
| 1135 char pathSep) { | |
| 1136 assert((fileSep == '/' && pathSep == ':') || | |
| 1137 (fileSep == '\\' && pathSep == ';'), "unexpected seperator chars"); | |
| 1138 | |
| 1139 // Scan the format string to determine the length of the actual | |
| 1140 // boot classpath, and handle platform dependencies as well. | |
| 1141 int formatted_path_len = 0; | |
| 1142 const char* p; | |
| 1143 for (p = format_string; *p != 0; ++p) { | |
| 1144 if (*p == '%') formatted_path_len += home_len - 1; | |
| 1145 ++formatted_path_len; | |
| 1146 } | |
| 1147 | |
| 6197 | 1148 char* formatted_path = NEW_C_HEAP_ARRAY(char, formatted_path_len + 1, mtInternal); |
| 0 | 1149 if (formatted_path == NULL) { |
| 1150 return NULL; | |
| 1151 } | |
| 1152 | |
| 1153 // Create boot classpath from format, substituting separator chars and | |
| 1154 // java home directory. | |
| 1155 char* q = formatted_path; | |
| 1156 for (p = format_string; *p != 0; ++p) { | |
| 1157 switch (*p) { | |
| 1158 case '%': | |
| 1159 strcpy(q, home); | |
| 1160 q += home_len; | |
| 1161 break; | |
| 1162 case '/': | |
| 1163 *q++ = fileSep; | |
| 1164 break; | |
| 1165 case ':': | |
| 1166 *q++ = pathSep; | |
| 1167 break; | |
| 1168 default: | |
| 1169 *q++ = *p; | |
| 1170 } | |
| 1171 } | |
| 1172 *q = '\0'; | |
| 1173 | |
| 1174 assert((q - formatted_path) == formatted_path_len, "formatted_path size botched"); | |
| 1175 return formatted_path; | |
| 1176 } | |
| 1177 | |
| 1178 | |
| 1179 bool os::set_boot_path(char fileSep, char pathSep) { | |
| 1180 const char* home = Arguments::get_java_home(); | |
| 1181 int home_len = (int)strlen(home); | |
| 1182 | |
| 1183 static const char* meta_index_dir_format = "%/lib/"; | |
| 1184 static const char* meta_index_format = "%/lib/meta-index"; | |
| 1185 char* meta_index = format_boot_path(meta_index_format, home, home_len, fileSep, pathSep); | |
| 1186 if (meta_index == NULL) return false; | |
| 1187 char* meta_index_dir = format_boot_path(meta_index_dir_format, home, home_len, fileSep, pathSep); | |
| 1188 if (meta_index_dir == NULL) return false; | |
| 1189 Arguments::set_meta_index_path(meta_index, meta_index_dir); | |
| 1190 | |
| 1191 // Any modification to the JAR-file list, for the boot classpath must be | |
| 1192 // aligned with install/install/make/common/Pack.gmk. Note: boot class | |
| 1193 // path class JARs, are stripped for StackMapTable to reduce download size. | |
| 1194 static const char classpath_format[] = | |
| 1195 "%/lib/resources.jar:" | |
| 1196 "%/lib/rt.jar:" | |
| 1197 "%/lib/sunrsasign.jar:" | |
| 1198 "%/lib/jsse.jar:" | |
| 1199 "%/lib/jce.jar:" | |
| 1200 "%/lib/charsets.jar:" | |
|
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1201 "%/lib/jfr.jar:" |
| 22298 | 1202 #if INCLUDE_JVMCI |
|
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1203 "%/lib/jvmci-services.jar:" |
|
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|
1204 #endif |
| 0 | 1205 "%/classes"; |
| 1206 char* sysclasspath = format_boot_path(classpath_format, home, home_len, fileSep, pathSep); | |
| 1207 if (sysclasspath == NULL) return false; | |
| 1208 Arguments::set_sysclasspath(sysclasspath); | |
| 1209 | |
| 1210 return true; | |
| 1211 } | |
| 1212 | |
| 691 | 1213 /* |
| 1214 * Splits a path, based on its separator, the number of | |
| 1215 * elements is returned back in n. | |
| 1216 * It is the callers responsibility to: | |
| 1217 * a> check the value of n, and n may be 0. | |
| 1218 * b> ignore any empty path elements | |
| 1219 * c> free up the data. | |
| 1220 */ | |
| 1221 char** os::split_path(const char* path, int* n) { | |
| 1222 *n = 0; | |
| 1223 if (path == NULL || strlen(path) == 0) { | |
| 1224 return NULL; | |
| 1225 } | |
| 1226 const char psepchar = *os::path_separator(); | |
| 6197 | 1227 char* inpath = (char*)NEW_C_HEAP_ARRAY(char, strlen(path) + 1, mtInternal); |
| 691 | 1228 if (inpath == NULL) { |
| 1229 return NULL; | |
| 1230 } | |
|
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|
1231 strcpy(inpath, path); |
| 691 | 1232 int count = 1; |
| 1233 char* p = strchr(inpath, psepchar); | |
| 1234 // Get a count of elements to allocate memory | |
| 1235 while (p != NULL) { | |
| 1236 count++; | |
| 1237 p++; | |
| 1238 p = strchr(p, psepchar); | |
| 1239 } | |
| 6197 | 1240 char** opath = (char**) NEW_C_HEAP_ARRAY(char*, count, mtInternal); |
| 691 | 1241 if (opath == NULL) { |
| 1242 return NULL; | |
| 1243 } | |
| 1244 | |
| 1245 // do the actual splitting | |
| 1246 p = inpath; | |
| 1247 for (int i = 0 ; i < count ; i++) { | |
| 1248 size_t len = strcspn(p, os::path_separator()); | |
| 1249 if (len > JVM_MAXPATHLEN) { | |
| 1250 return NULL; | |
| 1251 } | |
| 1252 // allocate the string and add terminator storage | |
| 6197 | 1253 char* s = (char*)NEW_C_HEAP_ARRAY(char, len + 1, mtInternal); |
| 691 | 1254 if (s == NULL) { |
| 1255 return NULL; | |
| 1256 } | |
| 1257 strncpy(s, p, len); | |
| 1258 s[len] = '\0'; | |
| 1259 opath[i] = s; | |
| 1260 p += len + 1; | |
| 1261 } | |
| 6197 | 1262 FREE_C_HEAP_ARRAY(char, inpath, mtInternal); |
| 691 | 1263 *n = count; |
| 1264 return opath; | |
| 1265 } | |
| 1266 | |
| 0 | 1267 void os::set_memory_serialize_page(address page) { |
| 1268 int count = log2_intptr(sizeof(class JavaThread)) - log2_intptr(64); | |
| 1269 _mem_serialize_page = (volatile int32_t *)page; | |
| 1270 // We initialize the serialization page shift count here | |
| 1271 // We assume a cache line size of 64 bytes | |
| 1272 assert(SerializePageShiftCount == count, | |
| 1273 "thread size changed, fix SerializePageShiftCount constant"); | |
| 1274 set_serialize_page_mask((uintptr_t)(vm_page_size() - sizeof(int32_t))); | |
| 1275 } | |
| 1276 | |
|
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1277 static volatile intptr_t SerializePageLock = 0; |
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1278 |
| 0 | 1279 // This method is called from signal handler when SIGSEGV occurs while the current |
| 1280 // thread tries to store to the "read-only" memory serialize page during state | |
| 1281 // transition. | |
| 1282 void os::block_on_serialize_page_trap() { | |
| 1283 if (TraceSafepoint) { | |
| 1284 tty->print_cr("Block until the serialize page permission restored"); | |
| 1285 } | |
|
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1286 // When VMThread is holding the SerializePageLock during modifying the |
| 0 | 1287 // access permission of the memory serialize page, the following call |
| 1288 // will block until the permission of that page is restored to rw. | |
| 1289 // Generally, it is unsafe to manipulate locks in signal handlers, but in | |
| 1290 // this case, it's OK as the signal is synchronous and we know precisely when | |
|
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1291 // it can occur. |
|
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1292 Thread::muxAcquire(&SerializePageLock, "set_memory_serialize_page"); |
|
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|
1293 Thread::muxRelease(&SerializePageLock); |
| 0 | 1294 } |
| 1295 | |
| 1296 // Serialize all thread state variables | |
| 1297 void os::serialize_thread_states() { | |
| 1298 // On some platforms such as Solaris & Linux, the time duration of the page | |
| 1299 // permission restoration is observed to be much longer than expected due to | |
| 1300 // scheduler starvation problem etc. To avoid the long synchronization | |
|
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1301 // time and expensive page trap spinning, 'SerializePageLock' is used to block |
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1302 // the mutator thread if such case is encountered. See bug 6546278 for details. |
|
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1303 Thread::muxAcquire(&SerializePageLock, "serialize_thread_states"); |
|
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1304 os::protect_memory((char *)os::get_memory_serialize_page(), |
|
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1305 os::vm_page_size(), MEM_PROT_READ); |
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1306 os::protect_memory((char *)os::get_memory_serialize_page(), |
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1307 os::vm_page_size(), MEM_PROT_RW); |
|
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|
1308 Thread::muxRelease(&SerializePageLock); |
| 0 | 1309 } |
| 1310 | |
| 1311 // Returns true if the current stack pointer is above the stack shadow | |
| 1312 // pages, false otherwise. | |
| 1313 | |
| 1314 bool os::stack_shadow_pages_available(Thread *thread, methodHandle method) { | |
| 1315 assert(StackRedPages > 0 && StackYellowPages > 0,"Sanity check"); | |
| 1316 address sp = current_stack_pointer(); | |
| 1317 // Check if we have StackShadowPages above the yellow zone. This parameter | |
| 605 | 1318 // is dependent on the depth of the maximum VM call stack possible from |
| 0 | 1319 // the handler for stack overflow. 'instanceof' in the stack overflow |
| 1320 // handler or a println uses at least 8k stack of VM and native code | |
| 1321 // respectively. | |
| 1322 const int framesize_in_bytes = | |
| 1323 Interpreter::size_top_interpreter_activation(method()) * wordSize; | |
| 1324 int reserved_area = ((StackShadowPages + StackRedPages + StackYellowPages) | |
| 1325 * vm_page_size()) + framesize_in_bytes; | |
| 1326 // The very lower end of the stack | |
| 1327 address stack_limit = thread->stack_base() - thread->stack_size(); | |
| 1328 return (sp > (stack_limit + reserved_area)); | |
| 1329 } | |
| 1330 | |
| 22976 | 1331 size_t os::page_size_for_region(size_t region_size, size_t min_pages, bool must_be_aligned) { |
| 0 | 1332 assert(min_pages > 0, "sanity"); |
| 1333 if (UseLargePages) { | |
|
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1334 const size_t max_page_size = region_size / min_pages; |
| 0 | 1335 |
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1336 for (size_t i = 0; _page_sizes[i] != 0; ++i) { |
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1337 const size_t page_size = _page_sizes[i]; |
| 22976 | 1338 if (page_size <= max_page_size) { |
| 1339 if (!must_be_aligned || is_size_aligned(region_size, page_size)) { | |
| 1340 return page_size; | |
| 1341 } | |
| 0 | 1342 } |
| 1343 } | |
| 1344 } | |
| 1345 | |
| 1346 return vm_page_size(); | |
| 1347 } | |
| 1348 | |
| 22976 | 1349 size_t os::page_size_for_region_aligned(size_t region_size, size_t min_pages) { |
| 1350 return page_size_for_region(region_size, min_pages, true); | |
| 1351 } | |
| 1352 | |
| 1353 size_t os::page_size_for_region_unaligned(size_t region_size, size_t min_pages) { | |
| 1354 return page_size_for_region(region_size, min_pages, false); | |
| 1355 } | |
| 1356 | |
| 0 | 1357 #ifndef PRODUCT |
| 3859 | 1358 void os::trace_page_sizes(const char* str, const size_t* page_sizes, int count) |
| 1359 { | |
| 1360 if (TracePageSizes) { | |
| 1361 tty->print("%s: ", str); | |
| 1362 for (int i = 0; i < count; ++i) { | |
| 1363 tty->print(" " SIZE_FORMAT, page_sizes[i]); | |
| 1364 } | |
| 1365 tty->cr(); | |
| 1366 } | |
| 1367 } | |
| 1368 | |
| 0 | 1369 void os::trace_page_sizes(const char* str, const size_t region_min_size, |
| 1370 const size_t region_max_size, const size_t page_size, | |
| 1371 const char* base, const size_t size) | |
| 1372 { | |
| 1373 if (TracePageSizes) { | |
| 1374 tty->print_cr("%s: min=" SIZE_FORMAT " max=" SIZE_FORMAT | |
| 1375 " pg_sz=" SIZE_FORMAT " base=" PTR_FORMAT | |
| 1376 " size=" SIZE_FORMAT, | |
| 1377 str, region_min_size, region_max_size, | |
| 1378 page_size, base, size); | |
| 1379 } | |
| 1380 } | |
| 1381 #endif // #ifndef PRODUCT | |
| 1382 | |
| 1383 // This is the working definition of a server class machine: | |
| 1384 // >= 2 physical CPU's and >=2GB of memory, with some fuzz | |
| 1385 // because the graphics memory (?) sometimes masks physical memory. | |
| 1386 // If you want to change the definition of a server class machine | |
| 1387 // on some OS or platform, e.g., >=4GB on Windohs platforms, | |
| 1388 // then you'll have to parameterize this method based on that state, | |
| 1389 // as was done for logical processors here, or replicate and | |
| 1390 // specialize this method for each platform. (Or fix os to have | |
| 1391 // some inheritance structure and use subclassing. Sigh.) | |
| 1392 // If you want some platform to always or never behave as a server | |
| 1393 // class machine, change the setting of AlwaysActAsServerClassMachine | |
| 1394 // and NeverActAsServerClassMachine in globals*.hpp. | |
| 1395 bool os::is_server_class_machine() { | |
| 1396 // First check for the early returns | |
| 1397 if (NeverActAsServerClassMachine) { | |
| 1398 return false; | |
| 1399 } | |
| 1400 if (AlwaysActAsServerClassMachine) { | |
| 1401 return true; | |
| 1402 } | |
| 1403 // Then actually look at the machine | |
| 1404 bool result = false; | |
| 1405 const unsigned int server_processors = 2; | |
| 1406 const julong server_memory = 2UL * G; | |
| 1407 // We seem not to get our full complement of memory. | |
| 1408 // We allow some part (1/8?) of the memory to be "missing", | |
| 1409 // based on the sizes of DIMMs, and maybe graphics cards. | |
| 1410 const julong missing_memory = 256UL * M; | |
| 1411 | |
| 1412 /* Is this a server class machine? */ | |
| 1413 if ((os::active_processor_count() >= (int)server_processors) && | |
| 1414 (os::physical_memory() >= (server_memory - missing_memory))) { | |
| 1415 const unsigned int logical_processors = | |
| 1416 VM_Version::logical_processors_per_package(); | |
| 1417 if (logical_processors > 1) { | |
| 1418 const unsigned int physical_packages = | |
| 1419 os::active_processor_count() / logical_processors; | |
| 1420 if (physical_packages > server_processors) { | |
| 1421 result = true; | |
| 1422 } | |
| 1423 } else { | |
| 1424 result = true; | |
| 1425 } | |
| 1426 } | |
| 1427 return result; | |
| 1428 } | |
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1429 |
| 24177 | 1430 void os::initialize_initial_active_processor_count() { |
| 1431 assert(_initial_active_processor_count == 0, "Initial active processor count already set."); | |
| 1432 _initial_active_processor_count = active_processor_count(); | |
| 1433 } | |
| 1434 | |
| 10405 | 1435 void os::SuspendedThreadTask::run() { |
| 1436 assert(Threads_lock->owned_by_self() || (_thread == VMThread::vm_thread()), "must have threads lock to call this"); | |
| 1437 internal_do_task(); | |
| 1438 _done = true; | |
| 1439 } | |
| 1440 | |
| 6197 | 1441 bool os::create_stack_guard_pages(char* addr, size_t bytes) { |
| 1442 return os::pd_create_stack_guard_pages(addr, bytes); | |
| 1443 } | |
| 1444 | |
| 1445 char* os::reserve_memory(size_t bytes, char* addr, size_t alignment_hint) { | |
| 1446 char* result = pd_reserve_memory(bytes, addr, alignment_hint); | |
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1447 if (result != NULL) { |
| 20360 | 1448 MemTracker::record_virtual_memory_reserve((address)result, bytes, CALLER_PC); |
| 6197 | 1449 } |
| 1450 | |
| 1451 return result; | |
| 1452 } | |
|
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1453 |
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1454 char* os::reserve_memory(size_t bytes, char* addr, size_t alignment_hint, |
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1455 MEMFLAGS flags) { |
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1456 char* result = pd_reserve_memory(bytes, addr, alignment_hint); |
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1457 if (result != NULL) { |
| 20360 | 1458 MemTracker::record_virtual_memory_reserve((address)result, bytes, CALLER_PC); |
|
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1459 MemTracker::record_virtual_memory_type((address)result, flags); |
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1460 } |
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1461 |
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1462 return result; |
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1463 } |
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1464 |
| 6197 | 1465 char* os::attempt_reserve_memory_at(size_t bytes, char* addr) { |
| 1466 char* result = pd_attempt_reserve_memory_at(bytes, addr); | |
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1467 if (result != NULL) { |
| 20360 | 1468 MemTracker::record_virtual_memory_reserve((address)result, bytes, CALLER_PC); |
| 6197 | 1469 } |
| 1470 return result; | |
| 1471 } | |
| 1472 | |
| 1473 void os::split_reserved_memory(char *base, size_t size, | |
| 1474 size_t split, bool realloc) { | |
| 1475 pd_split_reserved_memory(base, size, split, realloc); | |
| 1476 } | |
| 1477 | |
| 1478 bool os::commit_memory(char* addr, size_t bytes, bool executable) { | |
| 1479 bool res = pd_commit_memory(addr, bytes, executable); | |
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1480 if (res) { |
| 6197 | 1481 MemTracker::record_virtual_memory_commit((address)addr, bytes, CALLER_PC); |
| 1482 } | |
| 1483 return res; | |
| 1484 } | |
| 1485 | |
| 1486 bool os::commit_memory(char* addr, size_t size, size_t alignment_hint, | |
| 1487 bool executable) { | |
| 1488 bool res = os::pd_commit_memory(addr, size, alignment_hint, executable); | |
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1489 if (res) { |
| 6197 | 1490 MemTracker::record_virtual_memory_commit((address)addr, size, CALLER_PC); |
| 1491 } | |
| 1492 return res; | |
| 1493 } | |
| 1494 | |
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1495 void os::commit_memory_or_exit(char* addr, size_t bytes, bool executable, |
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1496 const char* mesg) { |
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1497 pd_commit_memory_or_exit(addr, bytes, executable, mesg); |
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1498 MemTracker::record_virtual_memory_commit((address)addr, bytes, CALLER_PC); |
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1499 } |
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1500 |
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1501 void os::commit_memory_or_exit(char* addr, size_t size, size_t alignment_hint, |
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1502 bool executable, const char* mesg) { |
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1503 os::pd_commit_memory_or_exit(addr, size, alignment_hint, executable, mesg); |
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1504 MemTracker::record_virtual_memory_commit((address)addr, size, CALLER_PC); |
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1505 } |
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1506 |
| 6197 | 1507 bool os::uncommit_memory(char* addr, size_t bytes) { |
| 20360 | 1508 bool res; |
| 1509 if (MemTracker::tracking_level() > NMT_minimal) { | |
| 1510 Tracker tkr = MemTracker::get_virtual_memory_uncommit_tracker(); | |
| 1511 res = pd_uncommit_memory(addr, bytes); | |
| 1512 if (res) { | |
| 1513 tkr.record((address)addr, bytes); | |
| 1514 } | |
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1515 } else { |
| 20360 | 1516 res = pd_uncommit_memory(addr, bytes); |
| 6197 | 1517 } |
| 1518 return res; | |
| 1519 } | |
| 1520 | |
| 1521 bool os::release_memory(char* addr, size_t bytes) { | |
| 20360 | 1522 bool res; |
| 1523 if (MemTracker::tracking_level() > NMT_minimal) { | |
| 1524 Tracker tkr = MemTracker::get_virtual_memory_release_tracker(); | |
| 1525 res = pd_release_memory(addr, bytes); | |
| 1526 if (res) { | |
| 1527 tkr.record((address)addr, bytes); | |
| 1528 } | |
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1529 } else { |
| 20360 | 1530 res = pd_release_memory(addr, bytes); |
| 6197 | 1531 } |
| 1532 return res; | |
| 1533 } | |
| 1534 | |
| 22973 | 1535 void os::pretouch_memory(char* start, char* end) { |
| 1536 for (volatile char *p = start; p < end; p += os::vm_page_size()) { | |
| 1537 *p = 0; | |
| 1538 } | |
| 1539 } | |
| 6197 | 1540 |
| 1541 char* os::map_memory(int fd, const char* file_name, size_t file_offset, | |
| 1542 char *addr, size_t bytes, bool read_only, | |
| 1543 bool allow_exec) { | |
| 1544 char* result = pd_map_memory(fd, file_name, file_offset, addr, bytes, read_only, allow_exec); | |
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1545 if (result != NULL) { |
| 20360 | 1546 MemTracker::record_virtual_memory_reserve_and_commit((address)result, bytes, CALLER_PC); |
| 6197 | 1547 } |
| 1548 return result; | |
| 1549 } | |
| 1550 | |
| 1551 char* os::remap_memory(int fd, const char* file_name, size_t file_offset, | |
| 1552 char *addr, size_t bytes, bool read_only, | |
| 1553 bool allow_exec) { | |
| 1554 return pd_remap_memory(fd, file_name, file_offset, addr, bytes, | |
| 1555 read_only, allow_exec); | |
| 1556 } | |
| 1557 | |
| 1558 bool os::unmap_memory(char *addr, size_t bytes) { | |
| 20360 | 1559 bool result; |
| 1560 if (MemTracker::tracking_level() > NMT_minimal) { | |
| 1561 Tracker tkr = MemTracker::get_virtual_memory_release_tracker(); | |
| 1562 result = pd_unmap_memory(addr, bytes); | |
| 1563 if (result) { | |
| 1564 tkr.record((address)addr, bytes); | |
| 1565 } | |
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1566 } else { |
| 20360 | 1567 result = pd_unmap_memory(addr, bytes); |
| 6197 | 1568 } |
| 1569 return result; | |
| 1570 } | |
| 1571 | |
| 1572 void os::free_memory(char *addr, size_t bytes, size_t alignment_hint) { | |
| 1573 pd_free_memory(addr, bytes, alignment_hint); | |
| 1574 } | |
| 1575 | |
| 1576 void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { | |
| 1577 pd_realign_memory(addr, bytes, alignment_hint); | |
| 1578 } | |
| 1579 | |
| 10405 | 1580 #ifndef TARGET_OS_FAMILY_windows |
| 1581 /* try to switch state from state "from" to state "to" | |
| 1582 * returns the state set after the method is complete | |
| 1583 */ | |
| 1584 os::SuspendResume::State os::SuspendResume::switch_state(os::SuspendResume::State from, | |
| 1585 os::SuspendResume::State to) | |
| 1586 { | |
| 1587 os::SuspendResume::State result = | |
| 1588 (os::SuspendResume::State) Atomic::cmpxchg((jint) to, (jint *) &_state, (jint) from); | |
| 1589 if (result == from) { | |
| 1590 // success | |
| 1591 return to; | |
| 1592 } | |
| 1593 return result; | |
| 1594 } | |
| 1595 #endif | |
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1596 |
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1597 /////////////// Unit tests /////////////// |
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1598 |
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1599 #ifndef PRODUCT |
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1600 |
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1601 #define assert_eq(a,b) assert(a == b, err_msg(SIZE_FORMAT " != " SIZE_FORMAT, a, b)) |
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1602 |
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1603 class TestOS : AllStatic { |
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1604 static size_t small_page_size() { |
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1605 return os::vm_page_size(); |
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1606 } |
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1607 |
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1608 static size_t large_page_size() { |
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1609 const size_t large_page_size_example = 4 * M; |
| 22976 | 1610 return os::page_size_for_region_aligned(large_page_size_example, 1); |
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1611 } |
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1612 |
| 22976 | 1613 static void test_page_size_for_region_aligned() { |
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1614 if (UseLargePages) { |
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1615 const size_t small_page = small_page_size(); |
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1616 const size_t large_page = large_page_size(); |
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1617 |
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1618 if (large_page > small_page) { |
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1619 size_t num_small_pages_in_large = large_page / small_page; |
| 22976 | 1620 size_t page = os::page_size_for_region_aligned(large_page, num_small_pages_in_large); |
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1621 |
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1622 assert_eq(page, small_page); |
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1623 } |
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1624 } |
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1625 } |
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1626 |
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1627 static void test_page_size_for_region_alignment() { |
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1628 if (UseLargePages) { |
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1629 const size_t small_page = small_page_size(); |
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1630 const size_t large_page = large_page_size(); |
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1631 if (large_page > small_page) { |
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1632 const size_t unaligned_region = large_page + 17; |
| 22976 | 1633 size_t page = os::page_size_for_region_aligned(unaligned_region, 1); |
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1634 assert_eq(page, small_page); |
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1635 |
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1636 const size_t num_pages = 5; |
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1637 const size_t aligned_region = large_page * num_pages; |
| 22976 | 1638 page = os::page_size_for_region_aligned(aligned_region, num_pages); |
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1639 assert_eq(page, large_page); |
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1640 } |
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1641 } |
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1642 } |
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1643 |
| 22976 | 1644 static void test_page_size_for_region_unaligned() { |
| 1645 if (UseLargePages) { | |
| 1646 // Given exact page size, should return that page size. | |
| 1647 for (size_t i = 0; os::_page_sizes[i] != 0; i++) { | |
| 1648 size_t expected = os::_page_sizes[i]; | |
| 1649 size_t actual = os::page_size_for_region_unaligned(expected, 1); | |
| 1650 assert_eq(expected, actual); | |
| 1651 } | |
| 1652 | |
| 1653 // Given slightly larger size than a page size, return the page size. | |
| 1654 for (size_t i = 0; os::_page_sizes[i] != 0; i++) { | |
| 1655 size_t expected = os::_page_sizes[i]; | |
| 1656 size_t actual = os::page_size_for_region_unaligned(expected + 17, 1); | |
| 1657 assert_eq(expected, actual); | |
| 1658 } | |
| 1659 | |
| 1660 // Given a slightly smaller size than a page size, | |
| 1661 // return the next smaller page size. | |
| 1662 if (os::_page_sizes[1] > os::_page_sizes[0]) { | |
| 1663 size_t expected = os::_page_sizes[0]; | |
| 1664 size_t actual = os::page_size_for_region_unaligned(os::_page_sizes[1] - 17, 1); | |
| 1665 assert_eq(actual, expected); | |
| 1666 } | |
| 1667 | |
| 1668 // Return small page size for values less than a small page. | |
| 1669 size_t small_page = small_page_size(); | |
| 1670 size_t actual = os::page_size_for_region_unaligned(small_page - 17, 1); | |
| 1671 assert_eq(small_page, actual); | |
| 1672 } | |
| 1673 } | |
| 1674 | |
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1675 public: |
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1676 static void run_tests() { |
| 22976 | 1677 test_page_size_for_region_aligned(); |
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1678 test_page_size_for_region_alignment(); |
| 22976 | 1679 test_page_size_for_region_unaligned(); |
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1680 } |
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1681 }; |
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1682 |
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1683 void TestOS_test() { |
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1684 TestOS::run_tests(); |
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1685 } |
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1686 |
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1687 #endif // PRODUCT |