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annotate src/share/vm/runtime/jniPeriodicChecker.hpp @ 18096:ca6d25be853b jdk8u25-b13

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8044269: Analysis of archive files. Summary: Add checksum verification. Reviewed-by: iklam, dholmes, mschoene
author jiangli
date Tue, 12 Aug 2014 17:46:16 -0400
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1 /*
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2 * Copyright (c) 2007, 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_JNIPERIODICCHECKER_HPP
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26 #define SHARE_VM_RUNTIME_JNIPERIODICCHECKER_HPP
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27
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28 class JniPeriodicCheckerTask;
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30 /*
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31 * This gets activated under Xcheck:jni (CheckJNICalls), and is typically
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32 * to detect any errors caused by JNI applications, such as signal handler,
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33 * hijacking, va 0x0 hijacking either by mmap or an OS error.
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34 */
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37 class JniPeriodicChecker : AllStatic {
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39 friend class JniPeriodicCheckerTask;
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41 private:
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42 static JniPeriodicCheckerTask* _task;
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44 public:
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45 // Start/stop task
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46 static void engage();
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47 static void disengage();
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48
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49 static bool is_active() { return _task != NULL; }
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51 static void initialize();
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52 static void destroy();
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53 };
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55 void jniPeriodicChecker_exit();
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57 #endif // SHARE_VM_RUNTIME_JNIPERIODICCHECKER_HPP