hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp

*** 836,871 ****
  
  ////////////////////////////////////////////////////////////////////////////////
  // thread stack
  
  #ifdef AMD64
! size_t os::Bsd::min_stack_allowed  = 64 * K;
  #else
! size_t os::Bsd::min_stack_allowed  =  (48 DEBUG_ONLY(+4))*K;
  
  #ifdef __GNUC__
  #define GET_GS() ({int gs; __asm__ volatile("movw %%gs, %w0":"=q"(gs)); gs&0xffff;})
  #endif
  
  #endif // AMD64
  
  // return default stack size for thr_type
! size_t os::Bsd::default_stack_size(os::ThreadType thr_type) {
    // default stack size (compiler thread needs larger stack)
  #ifdef AMD64
    size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
  #else
    size_t s = (thr_type == os::compiler_thread ? 2 * M : 512 * K);
  #endif // AMD64
    return s;
  }
  
- size_t os::Bsd::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());
- }
  
  // Java thread:
  //
  //   Low memory addresses
  //    +------------------------+
--- 836,870 ----
  
  ////////////////////////////////////////////////////////////////////////////////
  // thread stack
  
  #ifdef AMD64
! size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
! size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
! size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
  #else
! size_t os::Posix::_compiler_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
! size_t os::Posix::_java_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
! size_t os::Posix::_vm_internal_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
  
  #ifdef __GNUC__
  #define GET_GS() ({int gs; __asm__ volatile("movw %%gs, %w0":"=q"(gs)); gs&0xffff;})
  #endif
  
  #endif // AMD64
  
  // return default stack size for thr_type
! size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
    // default stack size (compiler thread needs larger stack)
  #ifdef AMD64
    size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
  #else
    size_t s = (thr_type == os::compiler_thread ? 2 * M : 512 * K);
  #endif // AMD64
    return s;
  }
  
  
  // Java thread:
  //
  //   Low memory addresses
  //    +------------------------+