303 // Only enable glibc guard pages for non-Java threads
304 // (Java threads have HotSpot guard pages)
305 return (thr_type == java_thread ? 0 : page_size());
306 }
307
308 static void current_stack_region(address *bottom, size_t *size) {
309 address stack_bottom;
310 address stack_top;
311 size_t stack_bytes;
312
313 #ifdef __APPLE__
314 pthread_t self = pthread_self();
315 stack_top = (address) pthread_get_stackaddr_np(self);
316 stack_bytes = pthread_get_stacksize_np(self);
317 stack_bottom = stack_top - stack_bytes;
318 #elif defined(__OpenBSD__)
319 stack_t ss;
320 int rslt = pthread_stackseg_np(pthread_self(), &ss);
321
322 if (rslt != 0)
323 fatal(err_msg("pthread_stackseg_np failed with err = " INT32_FORMAT,
324 rslt));
325
326 stack_top = (address) ss.ss_sp;
327 stack_bytes = ss.ss_size;
328 stack_bottom = stack_top - stack_bytes;
329 #else
330 pthread_attr_t attr;
331
332 int rslt = pthread_attr_init(&attr);
333
334 // JVM needs to know exact stack location, abort if it fails
335 if (rslt != 0)
336 fatal(err_msg("pthread_attr_init failed with err = " INT32_FORMAT, rslt));
337
338 rslt = pthread_attr_get_np(pthread_self(), &attr);
339
340 if (rslt != 0)
341 fatal(err_msg("pthread_attr_get_np failed with err = " INT32_FORMAT,
342 rslt));
343
344 if (pthread_attr_getstackaddr(&attr, (void **) &stack_bottom) != 0 ||
345 pthread_attr_getstacksize(&attr, &stack_bytes) != 0) {
346 fatal("Can not locate current stack attributes!");
347 }
348
349 pthread_attr_destroy(&attr);
350
351 stack_top = stack_bottom + stack_bytes;
352 #endif
353
354 assert(os::current_stack_pointer() >= stack_bottom, "should do");
355 assert(os::current_stack_pointer() < stack_top, "should do");
356
357 *bottom = stack_bottom;
358 *size = stack_top - stack_bottom;
359 }
360
361 address os::current_stack_base() {
362 address bottom;
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303 // Only enable glibc guard pages for non-Java threads
304 // (Java threads have HotSpot guard pages)
305 return (thr_type == java_thread ? 0 : page_size());
306 }
307
308 static void current_stack_region(address *bottom, size_t *size) {
309 address stack_bottom;
310 address stack_top;
311 size_t stack_bytes;
312
313 #ifdef __APPLE__
314 pthread_t self = pthread_self();
315 stack_top = (address) pthread_get_stackaddr_np(self);
316 stack_bytes = pthread_get_stacksize_np(self);
317 stack_bottom = stack_top - stack_bytes;
318 #elif defined(__OpenBSD__)
319 stack_t ss;
320 int rslt = pthread_stackseg_np(pthread_self(), &ss);
321
322 if (rslt != 0)
323 fatal("pthread_stackseg_np failed with err = " INT32_FORMAT, rslt);
324
325 stack_top = (address) ss.ss_sp;
326 stack_bytes = ss.ss_size;
327 stack_bottom = stack_top - stack_bytes;
328 #else
329 pthread_attr_t attr;
330
331 int rslt = pthread_attr_init(&attr);
332
333 // JVM needs to know exact stack location, abort if it fails
334 if (rslt != 0)
335 fatal("pthread_attr_init failed with err = " INT32_FORMAT, rslt);
336
337 rslt = pthread_attr_get_np(pthread_self(), &attr);
338
339 if (rslt != 0)
340 fatal("pthread_attr_get_np failed with err = " INT32_FORMAT, rslt);
341
342 if (pthread_attr_getstackaddr(&attr, (void **) &stack_bottom) != 0 ||
343 pthread_attr_getstacksize(&attr, &stack_bytes) != 0) {
344 fatal("Can not locate current stack attributes!");
345 }
346
347 pthread_attr_destroy(&attr);
348
349 stack_top = stack_bottom + stack_bytes;
350 #endif
351
352 assert(os::current_stack_pointer() >= stack_bottom, "should do");
353 assert(os::current_stack_pointer() < stack_top, "should do");
354
355 *bottom = stack_bottom;
356 *size = stack_top - stack_bottom;
357 }
358
359 address os::current_stack_base() {
360 address bottom;
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