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src/share/vm/memory/gcLocker.inline.hpp@4b52137b07c9 (annotated)

src/share/vm/memory/gcLocker.inline.hpp

Wed, 01 May 2013 14:11:01 +0100

author

chegar

date

Wed, 01 May 2013 14:11:01 +0100

changeset 5246

4b52137b07c9

parent 3576

ad3b47344802

child 6619

9c3dc501b5eb

permissions

-rw-r--r--

Merge

duke@435	1	/*
never@3494	2	* Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP
stefank@2314	26	#define SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP
stefank@2314	27
stefank@2314	28	#include "memory/gcLocker.hpp"
stefank@2314	29
duke@435	30	inline void GC_locker::lock() {
duke@435	31	// cast away volatile
duke@435	32	Atomic::inc(&_lock_count);
duke@435	33	CHECK_UNHANDLED_OOPS_ONLY(
duke@435	34	if (CheckUnhandledOops) { Thread::current()->_gc_locked_out_count++; })
duke@435	35	assert(Universe::heap() == NULL ||
duke@435	36	!Universe::heap()->is_gc_active(), "locking failed");
duke@435	37	}
duke@435	38
duke@435	39	inline void GC_locker::unlock() {
duke@435	40	// cast away volatile
duke@435	41	Atomic::dec(&_lock_count);
duke@435	42	CHECK_UNHANDLED_OOPS_ONLY(
duke@435	43	if (CheckUnhandledOops) { Thread::current()->_gc_locked_out_count--; })
duke@435	44	}
duke@435	45
duke@435	46	inline void GC_locker::lock_critical(JavaThread* thread) {
duke@435	47	if (!thread->in_critical()) {
never@3494	48	if (needs_gc()) {
never@3494	49	// jni_lock call calls enter_critical under the lock so that the
never@3494	50	// global lock count and per thread count are in agreement.
never@3494	51	jni_lock(thread);
never@3494	52	return;
duke@435	53	}
never@3494	54	increment_debug_jni_lock_count();
duke@435	55	}
duke@435	56	thread->enter_critical();
duke@435	57	}
duke@435	58
duke@435	59	inline void GC_locker::unlock_critical(JavaThread* thread) {
never@3494	60	if (thread->in_last_critical()) {
never@3494	61	if (needs_gc()) {
never@3494	62	// jni_unlock call calls exit_critical under the lock so that
never@3494	63	// the global lock count and per thread count are in agreement.
never@3494	64	jni_unlock(thread);
never@3494	65	return;
never@3494	66	}
never@3494	67	decrement_debug_jni_lock_count();
never@3494	68	}
duke@435	69	thread->exit_critical();
duke@435	70	}
stefank@2314	71
stefank@2314	72	#endif // SHARE_VM_MEMORY_GCLOCKER_INLINE_HPP