src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp

rev 12308 : imported patch new_os_guard_for_java_thread.patch

*** 837,859 ****
  }
  
  ////////////////////////////////////////////////////////////////////////////////
  // 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)
--- 837,860 ----
  }
  
  ////////////////////////////////////////////////////////////////////////////////
  // thread stack
  
! // Minimum usable stack sizes required to get to user code. Space for VM
! // guard pages is added later.
! size_t os::Posix::_compiler_thread_min_stack_allowed = 48 * K;
! size_t os::Posix::_java_thread_min_stack_allowed = 48 * K;
! #ifdef _LP64
  size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
  #else
  size_t os::Posix::_vm_internal_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
+ #endif // _LP64
  
+ #ifndef AMD64
  #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)