Mon, 18 Jun 2012 12:29:21 -0700
7176856: add the JRE name to the error log
Reviewed-by: coleenp, jrose, kvn, twisti
Contributed-by: Krystal Mok <sajia@taobao.com>
1 /*
2 * Copyright (c) 2001, 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
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23 */
25 #ifndef SHARE_VM_RUNTIME_THREADCRITICAL_HPP
26 #define SHARE_VM_RUNTIME_THREADCRITICAL_HPP
28 #include "memory/allocation.hpp"
30 // ThreadCritical is used to protect short non-blocking critical sections.
31 // This class must use no vm facilities that require initialization.
32 // It is used very early in the vm's initialization, in allocation
33 // code and other areas. ThreadCritical regions are reentrant.
34 //
35 // Due to race conditions during vm exit, some of the os level
36 // synchronization primitives may not be deallocated at exit. It
37 // is a good plan to implement the platform dependent sections of
38 // code with resources that are recoverable during process
39 // cleanup by the os. Calling the initialize method before use
40 // is also problematic, it is best to use preinitialized primitives
41 // if possible. As an example:
42 //
43 // mutex_t mp = DEFAULTMUTEX;
44 //
45 // Also note that this class is declared as a StackObj to enforce
46 // block structured short locks. It cannot be declared a ResourceObj
47 // or CHeapObj, due to initialization issues.
49 class ThreadCritical : public StackObj {
50 friend class os;
51 private:
52 static void initialize();
53 static void release();
55 public:
56 ThreadCritical();
57 ~ThreadCritical();
58 };
60 #endif // SHARE_VM_RUNTIME_THREADCRITICAL_HPP