Mercurial > hg > truffle
annotate src/os/linux/vm/os_linux.hpp @ 11122:81b6cb70717c jdk8-b99
Merge
| author | katleman |
|---|---|
| date | Tue, 16 Jul 2013 15:15:43 -0700 |
| parents | a837fa3d3f86 |
| children | 4c84d351cca9 88c255656030 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
8675
63e54c37ac64
8008959: Fix non-PCH build on Linux, Windows and MacOS X
simonis
parents:
6630
diff
changeset
|
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef OS_LINUX_VM_OS_LINUX_HPP |
| 26 #define OS_LINUX_VM_OS_LINUX_HPP | |
| 27 | |
| 0 | 28 // Linux_OS defines the interface to Linux operating systems |
| 29 | |
| 30 /* pthread_getattr_np comes with LinuxThreads-0.9-7 on RedHat 7.1 */ | |
| 31 typedef int (*pthread_getattr_func_type) (pthread_t, pthread_attr_t *); | |
| 32 | |
| 33 class Linux { | |
| 34 friend class os; | |
| 35 | |
| 36 // For signal-chaining | |
| 37 #define MAXSIGNUM 32 | |
| 38 static struct sigaction sigact[MAXSIGNUM]; // saved preinstalled sigactions | |
| 39 static unsigned int sigs; // mask of signals that have | |
| 40 // preinstalled signal handlers | |
| 41 static bool libjsig_is_loaded; // libjsig that interposes sigaction(), | |
| 42 // __sigaction(), signal() is loaded | |
| 43 static struct sigaction *(*get_signal_action)(int); | |
| 44 static struct sigaction *get_preinstalled_handler(int); | |
| 45 static void save_preinstalled_handler(int, struct sigaction&); | |
| 46 | |
| 47 static void check_signal_handler(int sig); | |
| 48 | |
| 49 // For signal flags diagnostics | |
| 50 static int sigflags[MAXSIGNUM]; | |
| 51 | |
| 52 static int (*_clock_gettime)(clockid_t, struct timespec *); | |
| 53 static int (*_pthread_getcpuclockid)(pthread_t, clockid_t *); | |
| 54 | |
| 55 static address _initial_thread_stack_bottom; | |
| 56 static uintptr_t _initial_thread_stack_size; | |
| 57 | |
|
199
f139919897d2
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
141
diff
changeset
|
58 static const char *_glibc_version; |
|
f139919897d2
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
141
diff
changeset
|
59 static const char *_libpthread_version; |
| 0 | 60 |
| 61 static bool _is_floating_stack; | |
| 62 static bool _is_NPTL; | |
| 63 static bool _supports_fast_thread_cpu_time; | |
| 64 | |
| 141 | 65 static GrowableArray<int>* _cpu_to_node; |
| 66 | |
| 0 | 67 protected: |
| 68 | |
| 69 static julong _physical_memory; | |
| 70 static pthread_t _main_thread; | |
| 71 static Mutex* _createThread_lock; | |
| 72 static int _page_size; | |
|
10164
b4081e9714ec
8013398: Adjust number of stack guard pages on systems with large memory page size
vladidan
parents:
8812
diff
changeset
|
73 static const int _vm_default_page_size; |
| 0 | 74 |
| 75 static julong available_memory(); | |
| 76 static julong physical_memory() { return _physical_memory; } | |
| 77 static void initialize_system_info(); | |
| 78 | |
|
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
79 static int commit_memory_impl(char* addr, size_t bytes, bool exec); |
|
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
80 static int commit_memory_impl(char* addr, size_t bytes, |
|
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
81 size_t alignment_hint, bool exec); |
|
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
82 |
|
199
f139919897d2
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
141
diff
changeset
|
83 static void set_glibc_version(const char *s) { _glibc_version = s; } |
|
f139919897d2
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
141
diff
changeset
|
84 static void set_libpthread_version(const char *s) { _libpthread_version = s; } |
| 0 | 85 |
| 86 static bool supports_variable_stack_size(); | |
| 87 | |
| 88 static void set_is_NPTL() { _is_NPTL = true; } | |
| 89 static void set_is_LinuxThreads() { _is_NPTL = false; } | |
| 90 static void set_is_floating_stack() { _is_floating_stack = true; } | |
| 91 | |
| 141 | 92 static void rebuild_cpu_to_node_map(); |
| 93 static GrowableArray<int>* cpu_to_node() { return _cpu_to_node; } | |
|
3286
139667d9836a
7034464: Support transparent large pages on Linux
iveresov
parents:
1972
diff
changeset
|
94 |
|
139667d9836a
7034464: Support transparent large pages on Linux
iveresov
parents:
1972
diff
changeset
|
95 static bool hugetlbfs_sanity_check(bool warn, size_t page_size); |
|
139667d9836a
7034464: Support transparent large pages on Linux
iveresov
parents:
1972
diff
changeset
|
96 |
|
6080
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
3826
diff
changeset
|
97 static void print_full_memory_info(outputStream* st); |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
3826
diff
changeset
|
98 static void print_distro_info(outputStream* st); |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
3826
diff
changeset
|
99 static void print_libversion_info(outputStream* st); |
|
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
nloodin
parents:
3826
diff
changeset
|
100 |
| 0 | 101 public: |
|
8710
9058789475af
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
8675
diff
changeset
|
102 static bool _stack_is_executable; |
|
8812
14509df4cd63
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
8710
diff
changeset
|
103 static void *dlopen_helper(const char *name, char *ebuf, int ebuflen); |
|
14509df4cd63
8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
iklam
parents:
8710
diff
changeset
|
104 static void *dll_load_in_vmthread(const char *name, char *ebuf, int ebuflen); |
|
8710
9058789475af
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
iklam
parents:
8675
diff
changeset
|
105 |
| 0 | 106 static void init_thread_fpu_state(); |
| 107 static int get_fpu_control_word(); | |
| 108 static void set_fpu_control_word(int fpu_control); | |
| 109 static pthread_t main_thread(void) { return _main_thread; } | |
| 110 // returns kernel thread id (similar to LWP id on Solaris), which can be | |
| 111 // used to access /proc | |
| 112 static pid_t gettid(); | |
| 113 static void set_createThread_lock(Mutex* lk) { _createThread_lock = lk; } | |
| 114 static Mutex* createThread_lock(void) { return _createThread_lock; } | |
| 115 static void hotspot_sigmask(Thread* thread); | |
| 116 | |
| 117 static address initial_thread_stack_bottom(void) { return _initial_thread_stack_bottom; } | |
| 118 static uintptr_t initial_thread_stack_size(void) { return _initial_thread_stack_size; } | |
| 119 static bool is_initial_thread(void); | |
| 120 | |
| 121 static int page_size(void) { return _page_size; } | |
| 122 static void set_page_size(int val) { _page_size = val; } | |
| 123 | |
|
10164
b4081e9714ec
8013398: Adjust number of stack guard pages on systems with large memory page size
vladidan
parents:
8812
diff
changeset
|
124 static int vm_default_page_size(void) { return _vm_default_page_size; } |
|
b4081e9714ec
8013398: Adjust number of stack guard pages on systems with large memory page size
vladidan
parents:
8812
diff
changeset
|
125 |
| 0 | 126 static address ucontext_get_pc(ucontext_t* uc); |
| 127 static intptr_t* ucontext_get_sp(ucontext_t* uc); | |
| 128 static intptr_t* ucontext_get_fp(ucontext_t* uc); | |
| 129 | |
| 130 // For Analyzer Forte AsyncGetCallTrace profiling support: | |
| 131 // | |
| 132 // This interface should be declared in os_linux_i486.hpp, but | |
| 133 // that file provides extensions to the os class and not the | |
| 134 // Linux class. | |
| 135 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc, | |
| 136 intptr_t** ret_sp, intptr_t** ret_fp); | |
| 137 | |
| 138 // This boolean allows users to forward their own non-matching signals | |
| 139 // to JVM_handle_linux_signal, harmlessly. | |
| 140 static bool signal_handlers_are_installed; | |
| 141 | |
| 142 static int get_our_sigflags(int); | |
| 143 static void set_our_sigflags(int, int); | |
| 144 static void signal_sets_init(); | |
| 145 static void install_signal_handlers(); | |
| 146 static void set_signal_handler(int, bool); | |
| 147 static bool is_sig_ignored(int sig); | |
| 148 | |
| 149 static sigset_t* unblocked_signals(); | |
| 150 static sigset_t* vm_signals(); | |
| 151 static sigset_t* allowdebug_blocked_signals(); | |
| 152 | |
| 153 // For signal-chaining | |
| 154 static struct sigaction *get_chained_signal_action(int sig); | |
| 155 static bool chained_handler(int sig, siginfo_t* siginfo, void* context); | |
| 156 | |
| 157 // GNU libc and libpthread version strings | |
|
199
f139919897d2
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
141
diff
changeset
|
158 static const char *glibc_version() { return _glibc_version; } |
|
f139919897d2
6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
xlu
parents:
141
diff
changeset
|
159 static const char *libpthread_version() { return _libpthread_version; } |
| 0 | 160 |
| 161 // NPTL or LinuxThreads? | |
| 162 static bool is_LinuxThreads() { return !_is_NPTL; } | |
| 163 static bool is_NPTL() { return _is_NPTL; } | |
| 164 | |
| 165 // NPTL is always floating stack. LinuxThreads could be using floating | |
| 166 // stack or fixed stack. | |
| 167 static bool is_floating_stack() { return _is_floating_stack; } | |
| 168 | |
| 169 static void libpthread_init(); | |
|
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
170 static bool libnuma_init(); |
|
763
cf71f149d7ae
6840196: NUMA allocator: crash in fastdebug during startup on Linux
iveresov
parents:
462
diff
changeset
|
171 static void* libnuma_dlsym(void* handle, const char* name); |
| 0 | 172 // Minimum stack size a thread can be created with (allowing |
| 173 // the VM to completely create the thread and enter user code) | |
| 174 static size_t min_stack_allowed; | |
| 175 | |
| 176 // Return default stack size or guard size for the specified thread type | |
| 177 static size_t default_stack_size(os::ThreadType thr_type); | |
| 178 static size_t default_guard_size(os::ThreadType thr_type); | |
| 179 | |
| 180 static void capture_initial_stack(size_t max_size); | |
| 181 | |
| 182 // Stack overflow handling | |
| 183 static bool manually_expand_stack(JavaThread * t, address addr); | |
| 184 static int max_register_window_saves_before_flushing(); | |
| 185 | |
| 186 // Real-time clock functions | |
| 187 static void clock_init(void); | |
| 188 | |
| 189 // fast POSIX clocks support | |
| 190 static void fast_thread_clock_init(void); | |
| 191 | |
|
6630
fa9253dcd4df
7194409: os::javaTimeNanos() shows hot on CPU_CLK_UNHALTED profiles
johnc
parents:
6197
diff
changeset
|
192 static inline bool supports_monotonic_clock() { |
| 0 | 193 return _clock_gettime != NULL; |
| 194 } | |
| 195 | |
| 196 static int clock_gettime(clockid_t clock_id, struct timespec *tp) { | |
| 197 return _clock_gettime ? _clock_gettime(clock_id, tp) : -1; | |
| 198 } | |
| 199 | |
| 200 static int pthread_getcpuclockid(pthread_t tid, clockid_t *clock_id) { | |
| 201 return _pthread_getcpuclockid ? _pthread_getcpuclockid(tid, clock_id) : -1; | |
| 202 } | |
| 203 | |
| 204 static bool supports_fast_thread_cpu_time() { | |
| 205 return _supports_fast_thread_cpu_time; | |
| 206 } | |
| 207 | |
| 208 static jlong fast_thread_cpu_time(clockid_t clockid); | |
| 209 | |
| 210 // Stack repair handling | |
| 211 | |
| 212 // none present | |
| 213 | |
| 214 // LinuxThreads work-around for 6292965 | |
| 215 static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime); | |
| 216 | |
| 141 | 217 private: |
| 218 typedef int (*sched_getcpu_func_t)(void); | |
| 219 typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen); | |
| 220 typedef int (*numa_max_node_func_t)(void); | |
| 221 typedef int (*numa_available_func_t)(void); | |
| 222 typedef int (*numa_tonode_memory_func_t)(void *start, size_t size, int node); | |
|
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
223 typedef void (*numa_interleave_memory_func_t)(void *start, size_t size, unsigned long *nodemask); |
| 141 | 224 |
| 225 static sched_getcpu_func_t _sched_getcpu; | |
| 226 static numa_node_to_cpus_func_t _numa_node_to_cpus; | |
| 227 static numa_max_node_func_t _numa_max_node; | |
| 228 static numa_available_func_t _numa_available; | |
| 229 static numa_tonode_memory_func_t _numa_tonode_memory; | |
|
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
230 static numa_interleave_memory_func_t _numa_interleave_memory; |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
231 static unsigned long* _numa_all_nodes; |
| 141 | 232 |
| 233 static void set_sched_getcpu(sched_getcpu_func_t func) { _sched_getcpu = func; } | |
| 234 static void set_numa_node_to_cpus(numa_node_to_cpus_func_t func) { _numa_node_to_cpus = func; } | |
| 235 static void set_numa_max_node(numa_max_node_func_t func) { _numa_max_node = func; } | |
| 236 static void set_numa_available(numa_available_func_t func) { _numa_available = func; } | |
| 237 static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; } | |
|
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
238 static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; } |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
239 static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; } |
| 3826 | 240 static int sched_getcpu_syscall(void); |
| 141 | 241 public: |
| 242 static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; } | |
| 243 static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) { | |
| 244 return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1; | |
| 245 } | |
| 246 static int numa_max_node() { return _numa_max_node != NULL ? _numa_max_node() : -1; } | |
| 247 static int numa_available() { return _numa_available != NULL ? _numa_available() : -1; } | |
| 248 static int numa_tonode_memory(void *start, size_t size, int node) { | |
| 249 return _numa_tonode_memory != NULL ? _numa_tonode_memory(start, size, node) : -1; | |
| 250 } | |
|
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
251 static void numa_interleave_memory(void *start, size_t size) { |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
252 if (_numa_interleave_memory != NULL && _numa_all_nodes != NULL) { |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
253 _numa_interleave_memory(start, size, _numa_all_nodes); |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
254 } |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
235
diff
changeset
|
255 } |
| 141 | 256 static int get_node_by_cpu(int cpu_id); |
| 0 | 257 }; |
| 258 | |
| 259 | |
| 6197 | 260 class PlatformEvent : public CHeapObj<mtInternal> { |
| 0 | 261 private: |
| 262 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line | |
| 263 volatile int _Event ; | |
| 264 volatile int _nParked ; | |
| 265 pthread_mutex_t _mutex [1] ; | |
| 266 pthread_cond_t _cond [1] ; | |
| 267 double PostPad [2] ; | |
| 268 Thread * _Assoc ; | |
| 269 | |
| 270 public: // TODO-FIXME: make dtor private | |
| 271 ~PlatformEvent() { guarantee (0, "invariant") ; } | |
| 272 | |
| 273 public: | |
| 274 PlatformEvent() { | |
| 275 int status; | |
| 276 status = pthread_cond_init (_cond, NULL); | |
| 277 assert_status(status == 0, status, "cond_init"); | |
| 278 status = pthread_mutex_init (_mutex, NULL); | |
| 279 assert_status(status == 0, status, "mutex_init"); | |
| 280 _Event = 0 ; | |
| 281 _nParked = 0 ; | |
| 282 _Assoc = NULL ; | |
| 283 } | |
| 284 | |
| 285 // Use caution with reset() and fired() -- they may require MEMBARs | |
| 286 void reset() { _Event = 0 ; } | |
| 287 int fired() { return _Event; } | |
| 288 void park () ; | |
| 289 void unpark () ; | |
| 290 int TryPark () ; | |
| 291 int park (jlong millis) ; | |
| 292 void SetAssociation (Thread * a) { _Assoc = a ; } | |
| 293 } ; | |
| 294 | |
| 6197 | 295 class PlatformParker : public CHeapObj<mtInternal> { |
| 0 | 296 protected: |
| 297 pthread_mutex_t _mutex [1] ; | |
| 298 pthread_cond_t _cond [1] ; | |
| 299 | |
| 300 public: // TODO-FIXME: make dtor private | |
| 301 ~PlatformParker() { guarantee (0, "invariant") ; } | |
| 302 | |
| 303 public: | |
| 304 PlatformParker() { | |
| 305 int status; | |
| 306 status = pthread_cond_init (_cond, NULL); | |
| 307 assert_status(status == 0, status, "cond_init"); | |
| 308 status = pthread_mutex_init (_mutex, NULL); | |
| 309 assert_status(status == 0, status, "mutex_init"); | |
| 310 } | |
| 10405 | 311 }; |
| 1972 | 312 |
| 313 #endif // OS_LINUX_VM_OS_LINUX_HPP |