Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/share/vm/memory/gcLocker.inline.hpp	Sat Dec 01 00:00:00 2007 +0000
     1.3 @@ -0,0 +1,72 @@
     1.4 +/*
     1.5 + * Copyright 2000-2005 Sun Microsystems, Inc.  All Rights Reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
    1.24 + * have any questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +inline bool GC_locker::is_active() {
    1.29 +  return _lock_count > 0 || _jni_lock_count > 0;
    1.30 +}
    1.31 +
    1.32 +inline bool GC_locker::check_active_before_gc() {
    1.33 +  if (is_active()) {
    1.34 +    set_needs_gc();
    1.35 +  }
    1.36 +  return is_active();
    1.37 +}
    1.38 +
    1.39 +inline void GC_locker::lock() {
    1.40 +  // cast away volatile
    1.41 +  Atomic::inc(&_lock_count);
    1.42 +  CHECK_UNHANDLED_OOPS_ONLY(
    1.43 +    if (CheckUnhandledOops) { Thread::current()->_gc_locked_out_count++; })
    1.44 +  assert(Universe::heap() == NULL ||
    1.45 +         !Universe::heap()->is_gc_active(), "locking failed");
    1.46 +}
    1.47 +
    1.48 +inline void GC_locker::unlock() {
    1.49 +  // cast away volatile
    1.50 +  Atomic::dec(&_lock_count);
    1.51 +  CHECK_UNHANDLED_OOPS_ONLY(
    1.52 +    if (CheckUnhandledOops) { Thread::current()->_gc_locked_out_count--; })
    1.53 +}
    1.54 +
    1.55 +inline void GC_locker::lock_critical(JavaThread* thread) {
    1.56 +  if (!thread->in_critical()) {
    1.57 +    if (!needs_gc()) {
    1.58 +      jni_lock();
    1.59 +    } else {
    1.60 +      jni_lock_slow();
    1.61 +    }
    1.62 +  }
    1.63 +  thread->enter_critical();
    1.64 +}
    1.65 +
    1.66 +inline void GC_locker::unlock_critical(JavaThread* thread) {
    1.67 +  thread->exit_critical();
    1.68 +  if (!thread->in_critical()) {
    1.69 +    if (!needs_gc()) {
    1.70 +      jni_unlock();
    1.71 +    } else {
    1.72 +      jni_unlock_slow();
    1.73 +    }
    1.74 +  }
    1.75 +}