Mercurial > hg > graal-compiler
comparison src/share/vm/runtime/jniPeriodicChecker.hpp @ 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 class JniPeriodicCheckerTask; | |
26 | |
27 /* | |
28 * This gets activated under Xcheck:jni (CheckJNICalls), and is typically | |
29 * to detect any errors caused by JNI applications, such as signal handler, | |
30 * hijacking, va 0x0 hijacking either by mmap or an OS error. | |
31 */ | |
32 | |
33 | |
34 class JniPeriodicChecker : AllStatic { | |
35 | |
36 friend class JniPeriodicCheckerTask; | |
37 | |
38 private: | |
39 static JniPeriodicCheckerTask* _task; | |
40 | |
41 public: | |
42 // Start/stop task | |
43 static void engage(); | |
44 static void disengage(); | |
45 | |
46 static bool is_active() { return _task != NULL; } | |
47 | |
48 static void initialize(); | |
49 static void destroy(); | |
50 }; | |
51 | |
52 void jniPeriodicChecker_exit(); |