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src/share/vm/runtime/jniPeriodicChecker.hpp@9f4457a14b58 (annotated)

src/share/vm/runtime/jniPeriodicChecker.hpp

Wed, 09 Apr 2008 15:10:22 -0700

author

rasbold

date

Wed, 09 Apr 2008 15:10:22 -0700

changeset 544

9f4457a14b58

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

Merge

duke@435	1	/*
duke@435	2	* Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	class JniPeriodicCheckerTask;
duke@435	26
duke@435	27	/*
duke@435	28	* This gets activated under Xcheck:jni (CheckJNICalls), and is typically
duke@435	29	* to detect any errors caused by JNI applications, such as signal handler,
duke@435	30	* hijacking, va 0x0 hijacking either by mmap or an OS error.
duke@435	31	*/
duke@435	32
duke@435	33
duke@435	34	class JniPeriodicChecker : AllStatic {
duke@435	35
duke@435	36	friend class JniPeriodicCheckerTask;
duke@435	37
duke@435	38	private:
duke@435	39	static JniPeriodicCheckerTask* _task;
duke@435	40
duke@435	41	public:
duke@435	42	// Start/stop task
duke@435	43	static void engage();
duke@435	44	static void disengage();
duke@435	45
duke@435	46	static bool is_active() { return _task != NULL; }
duke@435	47
duke@435	48	static void initialize();
duke@435	49	static void destroy();
duke@435	50	};
duke@435	51
duke@435	52	void jniPeriodicChecker_exit();