1 /* 2 * Copyright (c) 2002, 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_CMS_CMSLOCKVERIFIER_HPP 26 #define SHARE_VM_GC_CMS_CMSLOCKVERIFIER_HPP 27 28 #include "runtime/mutex.hpp" 29 30 ///////////// Locking verification specific to CMS ////////////// 31 // Much like "assert_lock_strong()", except 32 // that it relaxes the assertion somewhat for the parallel GC case, where 33 // main GC thread or the CMS thread might hold the lock on behalf of 34 // the parallel threads. 35 class CMSLockVerifier: AllStatic { 36 public: 37 static void assert_locked(const Mutex* lock, const Mutex* p_lock1, const Mutex* p_lock2) 38 PRODUCT_RETURN; 39 static void assert_locked(const Mutex* lock, const Mutex* p_lock) { 40 assert_locked(lock, p_lock, NULL); 41 } 42 static void assert_locked(const Mutex* lock) { 43 assert_locked(lock, NULL); 44 } 45 }; 46 47 #endif // SHARE_VM_GC_CMS_CMSLOCKVERIFIER_HPP