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src/share/vm/prims/jvmtiRawMonitor.hpp@eef07cd490d4 (annotated)
src/share/vm/prims/jvmtiRawMonitor.hpp
Wed, 03 Jul 2019 20:42:37 +0800
- author
- aoqi
- date
- Wed, 03 Jul 2019 20:42:37 +0800
- changeset 9637
- eef07cd490d4
- parent 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP |
| aoqi@0 | 26 | #define SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "runtime/objectMonitor.hpp" |
| aoqi@0 | 29 | #include "utilities/growableArray.hpp" |
| aoqi@0 | 30 | |
| aoqi@0 | 31 | // |
| aoqi@0 | 32 | // class JvmtiRawMonitor |
| aoqi@0 | 33 | // |
| aoqi@0 | 34 | // Used by JVMTI methods: All RawMonitor methods (CreateRawMonitor, EnterRawMonitor, etc.) |
| aoqi@0 | 35 | // |
| aoqi@0 | 36 | // Wrapper for ObjectMonitor class that saves the Monitor's name |
| aoqi@0 | 37 | // |
| aoqi@0 | 38 | |
| aoqi@0 | 39 | class JvmtiRawMonitor : public ObjectMonitor { |
| aoqi@0 | 40 | private: |
| aoqi@0 | 41 | int _magic; |
| aoqi@0 | 42 | char * _name; |
| aoqi@0 | 43 | // JVMTI_RM_MAGIC is set in contructor and unset in destructor. |
| aoqi@0 | 44 | enum { JVMTI_RM_MAGIC = (int)(('T' << 24) | ('I' << 16) | ('R' << 8) | 'M') }; |
| aoqi@0 | 45 | |
| aoqi@0 | 46 | int SimpleEnter (Thread * Self) ; |
| aoqi@0 | 47 | int SimpleExit (Thread * Self) ; |
| aoqi@0 | 48 | int SimpleWait (Thread * Self, jlong millis) ; |
| aoqi@0 | 49 | int SimpleNotify (Thread * Self, bool All) ; |
| aoqi@0 | 50 | |
| aoqi@0 | 51 | public: |
| aoqi@0 | 52 | JvmtiRawMonitor(const char *name); |
| aoqi@0 | 53 | ~JvmtiRawMonitor(); |
| aoqi@0 | 54 | int raw_enter(TRAPS); |
| aoqi@0 | 55 | int raw_exit(TRAPS); |
| aoqi@0 | 56 | int raw_wait(jlong millis, bool interruptable, TRAPS); |
| aoqi@0 | 57 | int raw_notify(TRAPS); |
| aoqi@0 | 58 | int raw_notifyAll(TRAPS); |
| aoqi@0 | 59 | int magic() { return _magic; } |
| aoqi@0 | 60 | const char *get_name() { return _name; } |
| aoqi@0 | 61 | bool is_valid(); |
| aoqi@0 | 62 | }; |
| aoqi@0 | 63 | |
| aoqi@0 | 64 | // Onload pending raw monitors |
| aoqi@0 | 65 | // Class is used to cache onload or onstart monitor enter |
| aoqi@0 | 66 | // which will transition into real monitor when |
| aoqi@0 | 67 | // VM is fully initialized. |
| aoqi@0 | 68 | class JvmtiPendingMonitors : public AllStatic { |
| aoqi@0 | 69 | |
| aoqi@0 | 70 | private: |
| aoqi@0 | 71 | static GrowableArray<JvmtiRawMonitor*> *_monitors; // Cache raw monitor enter |
| aoqi@0 | 72 | |
| aoqi@0 | 73 | inline static GrowableArray<JvmtiRawMonitor*>* monitors() { return _monitors; } |
| aoqi@0 | 74 | |
| aoqi@0 | 75 | static void dispose() { |
| aoqi@0 | 76 | delete monitors(); |
| aoqi@0 | 77 | } |
| aoqi@0 | 78 | |
| aoqi@0 | 79 | public: |
| aoqi@0 | 80 | static void enter(JvmtiRawMonitor *monitor) { |
| aoqi@0 | 81 | monitors()->append(monitor); |
| aoqi@0 | 82 | } |
| aoqi@0 | 83 | |
| aoqi@0 | 84 | static int count() { |
| aoqi@0 | 85 | return monitors()->length(); |
| aoqi@0 | 86 | } |
| aoqi@0 | 87 | |
| aoqi@0 | 88 | static void destroy(JvmtiRawMonitor *monitor) { |
| aoqi@0 | 89 | while (monitors()->contains(monitor)) { |
| aoqi@0 | 90 | monitors()->remove(monitor); |
| aoqi@0 | 91 | } |
| aoqi@0 | 92 | } |
| aoqi@0 | 93 | |
| aoqi@0 | 94 | // Return false if monitor is not found in the list. |
| aoqi@0 | 95 | static bool exit(JvmtiRawMonitor *monitor) { |
| aoqi@0 | 96 | if (monitors()->contains(monitor)) { |
| aoqi@0 | 97 | monitors()->remove(monitor); |
| aoqi@0 | 98 | return true; |
| aoqi@0 | 99 | } else { |
| aoqi@0 | 100 | return false; |
| aoqi@0 | 101 | } |
| aoqi@0 | 102 | } |
| aoqi@0 | 103 | |
| aoqi@0 | 104 | static void transition_raw_monitors(); |
| aoqi@0 | 105 | }; |
| aoqi@0 | 106 | |
| aoqi@0 | 107 | #endif // SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP |
