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