| /* |
| * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package nsk.share.gc.lock.jvmti; |
| |
| import nsk.share.TestBug; |
| import nsk.share.gc.lock.Locker; |
| import nsk.share.gc.lock.CriticalSectionTimedLocker; |
| |
| /** |
| * Malloc locker tries to hold malloc lock (if there is any) |
| * by calling malloc() and free() in a loop. |
| */ |
| public class JVMTIAllocLocker extends CriticalSectionTimedLocker { |
| static { |
| System.loadLibrary("JVMTIAllocLocker"); |
| } |
| |
| public JVMTIAllocLocker() { |
| } |
| |
| public JVMTIAllocLocker(long enterTime, long sleepTime) { |
| super(enterTime, sleepTime); |
| setSleepTime(sleepTime); |
| } |
| |
| /** |
| * This native method does Allocate() / Deallocate() in a loop |
| * while java field locked is set to true, sleeping |
| * for sleepTime between Allocate() and Deallocate() and after |
| * Deallocate(). |
| */ |
| private native void jVMTIAllocSection(long enterTime, long sleepTime); |
| |
| protected void criticalSection(long enterTime, long sleepTime) { |
| jVMTIAllocSection(enterTime, sleepTime); |
| } |
| } |