hotspot虚拟机源码
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/*
* Copyright (c) 2013, 2014, 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.
*/
/*
* @test TestSystemGC
* @key gc
* @requires vm.gc=="null"
* @summary Runs System.gc() with different flags.
* @run main/othervm TestSystemGC
* @run main/othervm -XX:+UseSerialGC TestSystemGC
* @run main/othervm -XX:+UseParNewGC TestSystemGC
* @run main/othervm -XX:+UseParallelGC TestSystemGC
* @run main/othervm -XX:+UseParallelGC -XX:-UseParallelOldGC TestSystemGC
* @run main/othervm -XX:+UseConcMarkSweepGC TestSystemGC
* @run main/othervm -XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent TestSystemGC
* @run main/othervm -XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent -XX:-UseParNewGC TestSystemGC
* @run main/othervm -XX:+UseG1GC TestSystemGC
* @run main/othervm -XX:+UseG1GC -XX:+ExplicitGCInvokesConcurrent TestSystemGC
* @run main/othervm -XX:+UseLargePages TestSystemGC
* @run main/othervm -XX:+UseLargePages -XX:+UseLargePagesInMetaspace TestSystemGC
*/
public class TestSystemGC {
public static void main(String args[]) throws Exception {
System.gc();
}
}