• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/runtime/jniPeriodicChecker.cpp@f47fa50d9b9c (annotated)

src/share/vm/runtime/jniPeriodicChecker.cpp

Fri, 28 Mar 2014 10:12:48 -0700

author

vlivanov

date

Fri, 28 Mar 2014 10:12:48 -0700

changeset 6527

f47fa50d9b9c

parent 2314

f95d63e2154a

child 6876

710a3c8b516e

permissions

-rw-r--r--

8035887: VM crashes trying to force inlining the recursive call
Reviewed-by: kvn, twisti

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2007, 2010, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "memory/allocation.inline.hpp"
stefank@2314	27	#include "runtime/jniPeriodicChecker.hpp"
stefank@2314	28	#include "runtime/task.hpp"
duke@435	29
duke@435	30
duke@435	31	// --------------------------------------------------------
duke@435	32	// Class to aid in periodic checking under CheckJNICalls
duke@435	33	class JniPeriodicCheckerTask : public PeriodicTask {
duke@435	34	public:
duke@435	35	JniPeriodicCheckerTask(int interval_time) : PeriodicTask(interval_time) {}
duke@435	36	void task() { os::run_periodic_checks(); }
duke@435	37	static void engage();
duke@435	38	static void disengage();
duke@435	39	};
duke@435	40
duke@435	41
duke@435	42	//----------------------------------------------------------
duke@435	43	// Implementation of JniPeriodicChecker
duke@435	44
duke@435	45	JniPeriodicCheckerTask* JniPeriodicChecker::_task = NULL;
duke@435	46
duke@435	47	/*
duke@435	48	* The engage() method is called at initialization time via
duke@435	49	* Thread::create_vm() to initialize the JniPeriodicChecker and
duke@435	50	* register it with the WatcherThread as a periodic task.
duke@435	51	*/
duke@435	52	void JniPeriodicChecker::engage() {
duke@435	53	if (CheckJNICalls && !is_active()) {
duke@435	54	// start up the periodic task
duke@435	55	_task = new JniPeriodicCheckerTask(10);
duke@435	56	_task->enroll();
duke@435	57	}
duke@435	58	}
duke@435	59
duke@435	60
duke@435	61	/*
duke@435	62	* the disengage() method is responsible for deactivating the periodic
duke@435	63	* task. This method is called from before_exit() in java.cpp and is only called
duke@435	64	* after the WatcherThread has been stopped.
duke@435	65	*/
duke@435	66	void JniPeriodicChecker::disengage() {
duke@435	67	if (CheckJNICalls && is_active()) {
duke@435	68	// remove JniPeriodicChecker
duke@435	69	_task->disenroll();
duke@435	70	delete _task;
duke@435	71	_task = NULL;
duke@435	72	}
duke@435	73	}
duke@435	74
duke@435	75	void jniPeriodicChecker_exit() {
duke@435	76	if (!CheckJNICalls) return;
duke@435	77	}