290 #ifdef _LP64
291 return true;
292 #else
293 if (bytes < 2 * G) {
294 return true;
295 }
296
297 char* addr = reserve_memory(bytes, NULL);
298
299 if (addr != NULL) {
300 release_memory(addr, bytes);
301 }
302
303 return addr != NULL;
304 #endif // _LP64
305 }
306
307 ///////////////////////////////////////////////////////////////////////////////
308 // thread stack
309
310 size_t os::Linux::min_stack_allowed = 64 * K;
311
312 size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
313 #ifdef _LP64
314 size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
315 #else
316 size_t s = (thr_type == os::compiler_thread ? 2 * M : 512 * K);
317 #endif // _LP64
318 return s;
319 }
320
321 size_t os::Linux::default_guard_size(os::ThreadType thr_type) {
322 // Only enable glibc guard pages for non-Java threads
323 // (Java threads have HotSpot guard pages)
324 return (thr_type == java_thread ? 0 : page_size());
325 }
326
327 static void current_stack_region(address *bottom, size_t *size) {
328 pthread_attr_t attr;
329 int res = pthread_getattr_np(pthread_self(), &attr);
330 if (res != 0) {
331 if (res == ENOMEM) {
332 vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "pthread_getattr_np");
|
290 #ifdef _LP64
291 return true;
292 #else
293 if (bytes < 2 * G) {
294 return true;
295 }
296
297 char* addr = reserve_memory(bytes, NULL);
298
299 if (addr != NULL) {
300 release_memory(addr, bytes);
301 }
302
303 return addr != NULL;
304 #endif // _LP64
305 }
306
307 ///////////////////////////////////////////////////////////////////////////////
308 // thread stack
309
310 size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
311 size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
312 size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
313
314 size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
315 #ifdef _LP64
316 size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
317 #else
318 size_t s = (thr_type == os::compiler_thread ? 2 * M : 512 * K);
319 #endif // _LP64
320 return s;
321 }
322
323 size_t os::Linux::default_guard_size(os::ThreadType thr_type) {
324 // Only enable glibc guard pages for non-Java threads
325 // (Java threads have HotSpot guard pages)
326 return (thr_type == java_thread ? 0 : page_size());
327 }
328
329 static void current_stack_region(address *bottom, size_t *size) {
330 pthread_attr_t attr;
331 int res = pthread_getattr_np(pthread_self(), &attr);
332 if (res != 0) {
333 if (res == ENOMEM) {
334 vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "pthread_getattr_np");
|