1 /* 2 * Copyright (c) 2000, 2015, 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_VM_GC_SHARED_GCLOCKER_INLINE_HPP 26 #define SHARE_VM_GC_SHARED_GCLOCKER_INLINE_HPP 27 28 #include "gc/shared/gcLocker.hpp" 29 #include "runtime/thread.hpp" 30 31 void 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 44 void 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_VM_GC_SHARED_GCLOCKER_INLINE_HPP