Mercurial > hg > truffle
comparison src/share/vm/runtime/jniPeriodicChecker.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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1 /* | |
2 * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_jniPeriodicChecker.cpp.incl" | |
27 | |
28 | |
29 // -------------------------------------------------------- | |
30 // Class to aid in periodic checking under CheckJNICalls | |
31 class JniPeriodicCheckerTask : public PeriodicTask { | |
32 public: | |
33 JniPeriodicCheckerTask(int interval_time) : PeriodicTask(interval_time) {} | |
34 void task() { os::run_periodic_checks(); } | |
35 static void engage(); | |
36 static void disengage(); | |
37 }; | |
38 | |
39 | |
40 //---------------------------------------------------------- | |
41 // Implementation of JniPeriodicChecker | |
42 | |
43 JniPeriodicCheckerTask* JniPeriodicChecker::_task = NULL; | |
44 | |
45 /* | |
46 * The engage() method is called at initialization time via | |
47 * Thread::create_vm() to initialize the JniPeriodicChecker and | |
48 * register it with the WatcherThread as a periodic task. | |
49 */ | |
50 void JniPeriodicChecker::engage() { | |
51 if (CheckJNICalls && !is_active()) { | |
52 // start up the periodic task | |
53 _task = new JniPeriodicCheckerTask(10); | |
54 _task->enroll(); | |
55 } | |
56 } | |
57 | |
58 | |
59 /* | |
60 * the disengage() method is responsible for deactivating the periodic | |
61 * task. This method is called from before_exit() in java.cpp and is only called | |
62 * after the WatcherThread has been stopped. | |
63 */ | |
64 void JniPeriodicChecker::disengage() { | |
65 if (CheckJNICalls && is_active()) { | |
66 // remove JniPeriodicChecker | |
67 _task->disenroll(); | |
68 delete _task; | |
69 _task = NULL; | |
70 } | |
71 } | |
72 | |
73 void jniPeriodicChecker_exit() { | |
74 if (!CheckJNICalls) return; | |
75 } |