1/*
2 * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#ifndef SHARE_GC_SHARED_GCLOCKER_INLINE_HPP
26#define SHARE_GC_SHARED_GCLOCKER_INLINE_HPP
27
28#include "gc/shared/gcLocker.hpp"
29#include "runtime/thread.hpp"
30
31void GCLocker::lock_critical(JavaThread* thread) {
32 if (!thread->in_critical()) {
33 if (needs_gc()) {
34 // jni_lock call calls enter_critical under the lock so that the
35 // global lock count and per thread count are in agreement.
36 jni_lock(thread);
37 return;
38 }
39 increment_debug_jni_lock_count();
40 }
41 thread->enter_critical();
42}
43
44void GCLocker::unlock_critical(JavaThread* thread) {
45 if (thread->in_last_critical()) {
46 if (needs_gc()) {
47 // jni_unlock call calls exit_critical under the lock so that
48 // the global lock count and per thread count are in agreement.
49 jni_unlock(thread);
50 return;
51 }
52 decrement_debug_jni_lock_count();
53 }
54 thread->exit_critical();
55}
56
57#endif // SHARE_GC_SHARED_GCLOCKER_INLINE_HPP
58