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annotate src/share/vm/runtime/extendedPC.hpp @ 12144:d8e99408faad

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8009062: poor performance of JNI AttachCurrentThread after fix for 7017193 Summary: don't re-evaluate stack bounds for main thread before install guard page Reviewed-by: coleenp, dholmes, dlong
author dsamersoff
date Thu, 29 Aug 2013 21:48:23 +0400
parents f95d63e2154a
children
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1 /*
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2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_RUNTIME_EXTENDEDPC_HPP
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26 #define SHARE_VM_RUNTIME_EXTENDEDPC_HPP
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27
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28 // An ExtendedPC contains the _pc from a signal handler in a platform
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29 // independent way.
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31 class ExtendedPC VALUE_OBJ_CLASS_SPEC {
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32 private:
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33 address _pc;
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34
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35 public:
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36 address pc() const { return _pc; }
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37 ExtendedPC(address pc) { _pc = pc; }
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38 ExtendedPC() { _pc = NULL; }
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39 };
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40
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41 #endif // SHARE_VM_RUNTIME_EXTENDEDPC_HPP