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

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) 2011, 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_SERVICETHREAD_HPP
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26 #define SHARE_VM_RUNTIME_SERVICETHREAD_HPP
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27
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28 #include "runtime/thread.hpp"
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29
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30 // A JavaThread for low memory detection support and JVMTI
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31 // compiled-method-load events.
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32 class ServiceThread : public JavaThread {
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33 friend class VMStructs;
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34 private:
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35
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36 static ServiceThread* _instance;
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37
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38 static void service_thread_entry(JavaThread* thread, TRAPS);
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39 ServiceThread(ThreadFunction entry_point) : JavaThread(entry_point) {};
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40
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41 public:
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42 static void initialize();
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43
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44 // Hide this thread from external view.
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45 bool is_hidden_from_external_view() const { return true; }
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46
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47 // Returns true if the passed thread is the service thread.
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48 static bool is_service_thread(Thread* thread);
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49 };
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50
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51 #endif // SHARE_VM_RUNTIME_SERVICETHREAD_HPP