/*
* Copyright (c) 2000, 2012, Oracle and/or its affiliates. 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
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP
#define SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP
#include "memory/gcLocker.hpp"
inline void GC_locker::lock() {
// cast away volatile
Atomic::inc(&_lock_count);
CHECK_UNHANDLED_OOPS_ONLY(
if (CheckUnhandledOops) { Thread::current()->_gc_locked_out_count++; })
assert(Universe::heap() == NULL ||
!Universe::heap()->is_gc_active(), "locking failed");
}
inline void GC_locker::unlock() {
// cast away volatile
Atomic::dec(&_lock_count);
CHECK_UNHANDLED_OOPS_ONLY(
if (CheckUnhandledOops) { Thread::current()->_gc_locked_out_count--; })
}
inline void GC_locker::lock_critical(JavaThread* thread) {
if (!thread->in_critical()) {
if (needs_gc()) {
// jni_lock call calls enter_critical under the lock so that the
// global lock count and per thread count are in agreement.
jni_lock(thread);
return;
}
increment_debug_jni_lock_count();
}
thread->enter_critical();
}
inline void GC_locker::unlock_critical(JavaThread* thread) {
if (thread->in_last_critical()) {
if (needs_gc()) {
// jni_unlock call calls exit_critical under the lock so that
// the global lock count and per thread count are in agreement.
jni_unlock(thread);
return;
}
decrement_debug_jni_lock_count();
}
thread->exit_critical();
}
#endif // SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP