4789   Linux::_pthread_setname_np =
4790     (int(*)(pthread_t, const char*))dlsym(RTLD_DEFAULT, "pthread_setname_np");
4791 
4792   os::Posix::init();
4793 }
4794 
4795 // To install functions for atexit system call
4796 extern "C" {
4797   static void perfMemory_exit_helper() {
4798     perfMemory_exit();
4799   }
4800 }
4801 
4802 // this is called _after_ the global arguments have been parsed
4803 jint os::init_2(void) {
4804 
4805   os::Posix::init_2();
4806 
4807   Linux::fast_thread_clock_init();
4808 
4809   // Allocate a single page and mark it as readable for safepoint polling
4810   address polling_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
4811   guarantee(polling_page != MAP_FAILED, "os::init_2: failed to allocate polling page");
4812 
4813   os::set_polling_page(polling_page);
4814   log_info(os)("SafePoint Polling address: " INTPTR_FORMAT, p2i(polling_page));
4815 
4816   if (!UseMembar) {
4817     address mem_serialize_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
4818     guarantee(mem_serialize_page != MAP_FAILED, "mmap Failed for memory serialize page");
4819     os::set_memory_serialize_page(mem_serialize_page);
4820     log_info(os)("Memory Serialize Page address: " INTPTR_FORMAT, p2i(mem_serialize_page));
4821   }
4822 
4823   // initialize suspend/resume support - must do this before signal_sets_init()
4824   if (SR_initialize() != 0) {
4825     perror("SR_initialize failed");
4826     return JNI_ERR;
4827   }
4828 
4829   Linux::signal_sets_init();
4830   Linux::install_signal_handlers();
4831 
4832   // Check and sets minimum stack sizes against command line options
4833   if (Posix::set_minimum_stack_sizes() == JNI_ERR) {
4834     return JNI_ERR;
4835   }
4836   Linux::capture_initial_stack(JavaThread::stack_size_at_create());
4837 
4838 #if defined(IA32)
4839   workaround_expand_exec_shield_cs_limit();
4840 #endif
4841 
4842   Linux::libpthread_init();

4789   Linux::_pthread_setname_np =
4790     (int(*)(pthread_t, const char*))dlsym(RTLD_DEFAULT, "pthread_setname_np");
4791 
4792   os::Posix::init();
4793 }
4794 
4795 // To install functions for atexit system call
4796 extern "C" {
4797   static void perfMemory_exit_helper() {
4798     perfMemory_exit();
4799   }
4800 }
4801 
4802 // this is called _after_ the global arguments have been parsed
4803 jint os::init_2(void) {
4804 
4805   os::Posix::init_2();
4806 
4807   Linux::fast_thread_clock_init();
4808 














4809   // initialize suspend/resume support - must do this before signal_sets_init()
4810   if (SR_initialize() != 0) {
4811     perror("SR_initialize failed");
4812     return JNI_ERR;
4813   }
4814 
4815   Linux::signal_sets_init();
4816   Linux::install_signal_handlers();
4817 
4818   // Check and sets minimum stack sizes against command line options
4819   if (Posix::set_minimum_stack_sizes() == JNI_ERR) {
4820     return JNI_ERR;
4821   }
4822   Linux::capture_initial_stack(JavaThread::stack_size_at_create());
4823 
4824 #if defined(IA32)
4825   workaround_expand_exec_shield_cs_limit();
4826 #endif
4827 
4828   Linux::libpthread_init();