author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 35227 | hotspot/src/share/vm/gc/shared/gcId.hpp@176e593eb364 |
child 49030 | 1817d118ff66 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_GC_SHARED_GCID_HPP |
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#define SHARE_VM_GC_SHARED_GCID_HPP |
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#include "memory/allocation.hpp" |
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class GCId : public AllStatic { |
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friend class GCIdMark; |
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friend class GCIdMarkAndRestore; |
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static uint _next_id; |
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static const uint UNDEFINED = (uint)-1; |
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static const uint create(); |
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public: |
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// Returns the currently active GC id. Asserts that there is an active GC id. |
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static const uint current(); |
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// Same as current() but can return undefined() if no GC id is currently active |
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static const uint current_raw(); |
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// Returns the next expected GCId. |
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static const uint peek(); |
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static const uint undefined() { return UNDEFINED; } |
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static size_t print_prefix(char* buf, size_t len); |
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}; |
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class GCIdMark : public StackObj { |
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uint _gc_id; |
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public: |
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GCIdMark(); |
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GCIdMark(uint gc_id); |
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~GCIdMark(); |
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}; |
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class GCIdMarkAndRestore : public StackObj { |
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uint _gc_id; |
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uint _previous_gc_id; |
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public: |
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GCIdMarkAndRestore(); |
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GCIdMarkAndRestore(uint gc_id); |
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~GCIdMarkAndRestore(); |
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}; |
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#endif // SHARE_VM_GC_SHARED_GCID_HPP |