Mercurial > hg > graal-jvmci-8

comparison src/os/linux/vm/os_linux.cpp @ 10164:b4081e9714ec

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8013398: Adjust number of stack guard pages on systems with large memory page size Summary: Auto adjust number of stack guard pages on systems with large memory page size Reviewed-by: bobv, coleenp
author vladidan
date Tue, 30 Apr 2013 17:36:01 -0400
parents f32b6c267d2e
children 9ce110b1d14a
comparison
equal deleted inserted replaced
10160:ed5a590835a4 10164:b4081e9714ec
117 int (*os::Linux::_clock_gettime)(clockid_t, struct timespec *) = NULL; 117 int (*os::Linux::_clock_gettime)(clockid_t, struct timespec *) = NULL;
118 int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL; 118 int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL;
119 Mutex* os::Linux::_createThread_lock = NULL; 119 Mutex* os::Linux::_createThread_lock = NULL;
120 pthread_t os::Linux::_main_thread; 120 pthread_t os::Linux::_main_thread;
121 int os::Linux::_page_size = -1; 121 int os::Linux::_page_size = -1;
122 const int os::Linux::_vm_default_page_size = (8 * K);
122 bool os::Linux::_is_floating_stack = false; 123 bool os::Linux::_is_floating_stack = false;
123 bool os::Linux::_is_NPTL = false; 124 bool os::Linux::_is_NPTL = false;
124 bool os::Linux::_supports_fast_thread_cpu_time = false; 125 bool os::Linux::_supports_fast_thread_cpu_time = false;
125 const char * os::Linux::_glibc_version = NULL; 126 const char * os::Linux::_glibc_version = NULL;
126 const char * os::Linux::_libpthread_version = NULL; 127 const char * os::Linux::_libpthread_version = NULL;
4248 Linux::_main_thread = pthread_self(); 4249 Linux::_main_thread = pthread_self();
4249 4250
4250 Linux::clock_init(); 4251 Linux::clock_init();
4251 initial_time_count = os::elapsed_counter(); 4252 initial_time_count = os::elapsed_counter();
4252 pthread_mutex_init(&dl_mutex, NULL); 4253 pthread_mutex_init(&dl_mutex, NULL);
4254
4255 // If the pagesize of the VM is greater than 8K determine the appropriate
4256 // number of initial guard pages. The user can change this with the
4257 // command line arguments, if needed.
4258 if (vm_page_size() > (int)Linux::vm_default_page_size()) {
4259 StackYellowPages = 1;
4260 StackRedPages = 1;
4261 StackShadowPages = round_to((StackShadowPages*Linux::vm_default_page_size()), vm_page_size()) / vm_page_size();
4262 }
4253 } 4263 }
4254 4264
4255 // To install functions for atexit system call 4265 // To install functions for atexit system call
4256 extern "C" { 4266 extern "C" {
4257 static void perfMemory_exit_helper() { 4267 static void perfMemory_exit_helper() {
4301 // the java system classes, including StackOverflowError - depends on page 4311 // the java system classes, including StackOverflowError - depends on page
4302 // size. Add a page for compiler2 recursion in main thread. 4312 // size. Add a page for compiler2 recursion in main thread.
4303 // Add in 2*BytesPerWord times page size to account for VM stack during 4313 // Add in 2*BytesPerWord times page size to account for VM stack during
4304 // class initialization depending on 32 or 64 bit VM. 4314 // class initialization depending on 32 or 64 bit VM.
4305 os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed, 4315 os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
4306 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ 4316 (size_t)(StackYellowPages+StackRedPages+StackShadowPages) * Linux::page_size() +
4307 2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::page_size()); 4317 (2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::vm_default_page_size());
4308 4318
4309 size_t threadStackSizeInBytes = ThreadStackSize * K; 4319 size_t threadStackSizeInBytes = ThreadStackSize * K;
4310 if (threadStackSizeInBytes != 0 && 4320 if (threadStackSizeInBytes != 0 &&
4311 threadStackSizeInBytes < os::Linux::min_stack_allowed) { 4321 threadStackSizeInBytes < os::Linux::min_stack_allowed) {
4312 tty->print_cr("\nThe stack size specified is too small, " 4322 tty->print_cr("\nThe stack size specified is too small, "