src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp

rev 12363 : 8169373: Work around linux NPTL stack guard error.
Summary: Also skip libc guard page for compiler thread, merge similar code on linux platforms, and streamline libc guard page handling on linuxs390, linuxppc, aixppc.
Reviewed-by: dholmes, dcubed, kvn

*** 868,885 ****
  
  // Java thread:
  //
  //   Low memory addresses
  //    +------------------------+
! //    |                        |\  JavaThread created by VM does not have glibc
  //    |    glibc guard page    | - guard, attached Java thread usually has
! //    |                        |/  1 page glibc guard.
  // P1 +------------------------+ Thread::stack_base() - Thread::stack_size()
  //    |                        |\
! //    |  HotSpot Guard Pages   | - red and yellow pages
  //    |                        |/
! //    +------------------------+ JavaThread::stack_yellow_zone_base()
  //    |                        |\
  //    |      Normal Stack      | -
  //    |                        |/
  // P2 +------------------------+ Thread::stack_base()
  //
--- 868,885 ----
  
  // Java thread:
  //
  //   Low memory addresses
  //    +------------------------+
! //    |                        |\  Java thread created by VM does not have glibc
  //    |    glibc guard page    | - guard, attached Java thread usually has
! //    |                        |/  1 glibc guard page.
  // P1 +------------------------+ Thread::stack_base() - Thread::stack_size()
  //    |                        |\
! //    |  HotSpot Guard Pages   | - red, yellow and reserved pages
  //    |                        |/
! //    +------------------------+ JavaThread::stack_reserved_zone_base()
  //    |                        |\
  //    |      Normal Stack      | -
  //    |                        |/
  // P2 +------------------------+ Thread::stack_base()
  //
*** 923,949 ****
  #elif defined(__OpenBSD__)
    stack_t ss;
    int rslt = pthread_stackseg_np(pthread_self(), &ss);
  
    if (rslt != 0)
!     fatal("pthread_stackseg_np failed with err = %d", rslt);
  
    *bottom = (address)((char *)ss.ss_sp - ss.ss_size);
    *size   = ss.ss_size;
  #else
    pthread_attr_t attr;
  
    int rslt = pthread_attr_init(&attr);
  
    // JVM needs to know exact stack location, abort if it fails
    if (rslt != 0)
!     fatal("pthread_attr_init failed with err = %d", rslt);
  
    rslt = pthread_attr_get_np(pthread_self(), &attr);
  
    if (rslt != 0)
!     fatal("pthread_attr_get_np failed with err = %d", rslt);
  
    if (pthread_attr_getstackaddr(&attr, (void **)bottom) != 0 ||
      pthread_attr_getstacksize(&attr, size) != 0) {
      fatal("Can not locate current stack attributes!");
    }
--- 923,949 ----
  #elif defined(__OpenBSD__)
    stack_t ss;
    int rslt = pthread_stackseg_np(pthread_self(), &ss);
  
    if (rslt != 0)
!     fatal("pthread_stackseg_np failed with error = %d", rslt);
  
    *bottom = (address)((char *)ss.ss_sp - ss.ss_size);
    *size   = ss.ss_size;
  #else
    pthread_attr_t attr;
  
    int rslt = pthread_attr_init(&attr);
  
    // JVM needs to know exact stack location, abort if it fails
    if (rslt != 0)
!     fatal("pthread_attr_init failed with error = %d", rslt);
  
    rslt = pthread_attr_get_np(pthread_self(), &attr);
  
    if (rslt != 0)
!     fatal("pthread_attr_get_np failed with error = %d", rslt);
  
    if (pthread_attr_getstackaddr(&attr, (void **)bottom) != 0 ||
      pthread_attr_getstacksize(&attr, size) != 0) {
      fatal("Can not locate current stack attributes!");
    }