< prev index next >

src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp

Print this page
rev 12334 : 8169373: Work around linux NPTL stack guard error.
Summary: Also skip OS guard page for compiler thread, merge similar code on linux platforms, and streamline OS guard page handling on linuxs390, linuxppc, aixppc.
Reviewed-by: dholmes

*** 154,208 **** address os::current_stack_pointer() { register void *sp __asm__ ("sp"); return (address)sp; } - static void current_stack_region(address* bottom, size_t* size) { - if (os::Linux::is_initial_thread()) { - // initial thread needs special handling because pthread_getattr_np() - // may return bogus value. - *bottom = os::Linux::initial_thread_stack_bottom(); - *size = os::Linux::initial_thread_stack_size(); - } else { - pthread_attr_t attr; - - int rslt = pthread_getattr_np(pthread_self(), &attr); - - // JVM needs to know exact stack location, abort if it fails - if (rslt != 0) { - if (rslt == ENOMEM) { - vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "pthread_getattr_np"); - } else { - fatal("pthread_getattr_np failed with errno = %d", rslt); - } - } - - if (pthread_attr_getstack(&attr, (void**)bottom, size) != 0) { - fatal("Can not locate current stack attributes!"); - } - - pthread_attr_destroy(&attr); - } - assert(os::current_stack_pointer() >= *bottom && - os::current_stack_pointer() < *bottom + *size, "just checking"); - } - - address os::current_stack_base() { - address bottom; - size_t size; - current_stack_region(&bottom, &size); - return bottom + size; - } - - size_t os::current_stack_size() { - // stack size includes normal stack and HotSpot guard pages - address bottom; - size_t size; - current_stack_region(&bottom, &size); - return size; - } - char* os::non_memory_address_word() { // Must never look like an address returned by reserve_memory, // even in its subfields (as defined by the CPU immediate fields, // if the CPU splits constants across multiple instructions). // On SPARC, 0 != %hi(any real address), because there is no --- 154,163 ----
*** 735,750 **** // default stack size (compiler thread needs larger stack) size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M); return s; } - size_t os::Linux::default_guard_size(os::ThreadType thr_type) { - // Creating guard page is very expensive. Java thread has HotSpot - // guard page, only enable glibc guard page for non-Java threads. - return (thr_type == java_thread ? 0 : page_size()); - } - #ifndef PRODUCT void os::verify_stack_alignment() { } #endif --- 690,699 ----
< prev index next >