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comparison src/share/vm/gc_implementation/shared/gcId.hpp @ 20190:0982ec23da03

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8043607: Add a GC id as a log decoration similar to PrintGCTimeStamps Reviewed-by: jwilhelm, ehelin, tschatzl
author brutisso
date Thu, 19 Jun 2014 13:31:14 +0200
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20189:5d855d021755 20190:0982ec23da03
1 /*
2 * Copyright (c) 2014, 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_IMPLEMENTATION_SHARED_GCID_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCID_HPP
27
28 #include "memory/allocation.hpp"
29
30 class GCId VALUE_OBJ_CLASS_SPEC {
31 private:
32 uint _id;
33 GCId(uint id) : _id(id) {}
34 GCId() { } // Unused
35
36 static uint _next_id;
37 static const uint UNDEFINED = (uint)-1;
38
39 public:
40 uint id() const {
41 assert(_id != UNDEFINED, "Using undefined GC ID");
42 return _id;
43 }
44 bool is_undefined() const;
45
46 static const GCId create();
47 static const GCId peek();
48 static const GCId undefined();
49 };
50
51 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCID_HPP