1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/runtime/jniPeriodicChecker.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,57 @@
1.4 +/*
1.5 + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_RUNTIME_JNIPERIODICCHECKER_HPP
1.29 +#define SHARE_VM_RUNTIME_JNIPERIODICCHECKER_HPP
1.30 +
1.31 +class JniPeriodicCheckerTask;
1.32 +
1.33 +/*
1.34 + * This gets activated under Xcheck:jni (CheckJNICalls), and is typically
1.35 + * to detect any errors caused by JNI applications, such as signal handler,
1.36 + * hijacking, va 0x0 hijacking either by mmap or an OS error.
1.37 + */
1.38 +
1.39 +
1.40 +class JniPeriodicChecker : AllStatic {
1.41 +
1.42 + friend class JniPeriodicCheckerTask;
1.43 +
1.44 + private:
1.45 + static JniPeriodicCheckerTask* _task;
1.46 +
1.47 + public:
1.48 + // Start/stop task
1.49 + static void engage();
1.50 + static void disengage();
1.51 +
1.52 + static bool is_active() { return _task != NULL; }
1.53 +
1.54 + static void initialize();
1.55 + static void destroy();
1.56 +};
1.57 +
1.58 +void jniPeriodicChecker_exit();
1.59 +
1.60 +#endif // SHARE_VM_RUNTIME_JNIPERIODICCHECKER_HPP
