src/os/aix/vm/os_aix.cpp

*** 1,7 ****
  /*
!  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2012, 2014 SAP AG. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
--- 1,7 ----
  /*
!  * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2012, 2014 SAP AG. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
*** 2827,2848 ****
    sched_yield();
  }
  
  os::YieldResult os::NakedYield() { sched_yield(); return os::YIELD_UNKNOWN; }
  
! void os::yield_all(int attempts) {
    // Yields to all threads, including threads with lower priorities
    // Threads on Linux are all with same priority. The Solaris style
    // os::yield_all() with nanosleep(1ms) is not necessary.
    sched_yield();
  }
  
- // Called from the tight loops to possibly influence time-sharing heuristics
- void os::loop_breaker(int attempts) {
-   os::yield_all(attempts);
- }
- 
  ////////////////////////////////////////////////////////////////////////////////
  // thread priority support
  
  // From AIX manpage to pthread_setschedparam
  // (see: http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?
--- 2827,2843 ----
    sched_yield();
  }
  
  os::YieldResult os::NakedYield() { sched_yield(); return os::YIELD_UNKNOWN; }
  
! void os::yield_all() {
    // Yields to all threads, including threads with lower priorities
    // Threads on Linux are all with same priority. The Solaris style
    // os::yield_all() with nanosleep(1ms) is not necessary.
    sched_yield();
  }
  
  ////////////////////////////////////////////////////////////////////////////////
  // thread priority support
  
  // From AIX manpage to pthread_setschedparam
  // (see: http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?
*** 3095,3105 ****
  
    // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED
  
    for (int n = 0; !osthread->sr.is_suspended(); n++) {
      for (int i = 0; i < RANDOMLY_LARGE_INTEGER2 && !osthread->sr.is_suspended(); i++) {
!       os::yield_all(i);
      }
  
      // timeout, try to cancel the request
      if (n >= RANDOMLY_LARGE_INTEGER) {
        os::SuspendResume::State cancelled = osthread->sr.cancel_suspend();
--- 3090,3100 ----
  
    // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED
  
    for (int n = 0; !osthread->sr.is_suspended(); n++) {
      for (int i = 0; i < RANDOMLY_LARGE_INTEGER2 && !osthread->sr.is_suspended(); i++) {
!       os::yield_all();
      }
  
      // timeout, try to cancel the request
      if (n >= RANDOMLY_LARGE_INTEGER) {
        os::SuspendResume::State cancelled = osthread->sr.cancel_suspend();
*** 3129,3139 ****
  
    while (!osthread->sr.is_running()) {
      if (sr_notify(osthread) == 0) {
        for (int n = 0; n < RANDOMLY_LARGE_INTEGER && !osthread->sr.is_running(); n++) {
          for (int i = 0; i < 100 && !osthread->sr.is_running(); i++) {
!           os::yield_all(i);
          }
        }
      } else {
        ShouldNotReachHere();
      }
--- 3124,3134 ----
  
    while (!osthread->sr.is_running()) {
      if (sr_notify(osthread) == 0) {
        for (int n = 0; n < RANDOMLY_LARGE_INTEGER && !osthread->sr.is_running(); n++) {
          for (int i = 0; i < 100 && !osthread->sr.is_running(); i++) {
!           os::yield_all();
          }
        }
      } else {
        ShouldNotReachHere();
      }