1 /* 2 * Copyright (c) 2002, 2005, 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 # include "incls/_precompiled.incl" 26 # include "incls/_cmsLockVerifier.cpp.incl" 27 28 ///////////// Locking verification specific to CMS ////////////// 29 // Much like "assert_lock_strong()", except that it relaxes the 30 // assertion somewhat for the parallel GC case, where VM thread 31 // or the CMS thread might hold the lock on behalf of the parallel 32 // threads. The second argument is in support of an extra locking 33 // check for CFL spaces' free list locks. 34 #ifndef PRODUCT 35 void CMSLockVerifier::assert_locked(const Mutex* lock, 36 const Mutex* p_lock1, 37 const Mutex* p_lock2) { 38 if (!Universe::is_fully_initialized()) { 39 return; 40 } 41 42 Thread* myThread = Thread::current(); 43 44 if (lock == NULL) { // a "lock-free" structure, e.g. MUT, protected by CMS token 45 assert(p_lock1 == NULL && p_lock2 == NULL, "Unexpected caller error"); 46 if (myThread->is_ConcurrentGC_thread()) { | 1 /* 2 * Copyright (c) 2002, 2010, 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 #include "precompiled.hpp" 26 #include "gc_implementation/concurrentMarkSweep/cmsLockVerifier.hpp" 27 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" 28 #include "runtime/vmThread.hpp" 29 30 ///////////// Locking verification specific to CMS ////////////// 31 // Much like "assert_lock_strong()", except that it relaxes the 32 // assertion somewhat for the parallel GC case, where VM thread 33 // or the CMS thread might hold the lock on behalf of the parallel 34 // threads. The second argument is in support of an extra locking 35 // check for CFL spaces' free list locks. 36 #ifndef PRODUCT 37 void CMSLockVerifier::assert_locked(const Mutex* lock, 38 const Mutex* p_lock1, 39 const Mutex* p_lock2) { 40 if (!Universe::is_fully_initialized()) { 41 return; 42 } 43 44 Thread* myThread = Thread::current(); 45 46 if (lock == NULL) { // a "lock-free" structure, e.g. MUT, protected by CMS token 47 assert(p_lock1 == NULL && p_lock2 == NULL, "Unexpected caller error"); 48 if (myThread->is_ConcurrentGC_thread()) { |