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/*
* Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
*
* 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 TestStringInternCleanup
* @summary Check that Shenandoah cleans up interned strings
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:+ShenandoahDegeneratedGC
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:-ShenandoahDegeneratedGC
* TestStringInternCleanup
*/
/*
* @test TestStringInternCleanup
* @summary Check that Shenandoah cleans up interned strings
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
* -XX:+ShenandoahVerify
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:-ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC
* TestStringInternCleanup
*/
/*
* @test TestStringInternCleanup
* @summary Check that Shenandoah cleans up interned strings
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
* -XX:+ShenandoahVerify
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
* -XX:+ShenandoahVerify
* TestStringInternCleanup
*
* @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
* TestStringInternCleanup
*/
public class TestStringInternCleanup {
static final int COUNT = 1_000_000;
static final int WINDOW = 1_000;
static final String[] reachable = new String[WINDOW];
public static void main(String[] args) throws Exception {
int rIdx = 0;
for (int c = 0; c < COUNT; c++) {
reachable[rIdx] = ("LargeInternedString" + c).intern();
rIdx++;
if (rIdx >= WINDOW) {
rIdx = 0;
}
}
}
}
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