author | chegar |
Thu, 17 Oct 2019 20:54:25 +0100 | |
branch | datagramsocketimpl-branch |
changeset 58679 | 9c3209ff7550 |
parent 58678 | 9cf78a70fa4f |
parent 55606 | 78a2b1bb15cf |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, Red Hat, Inc. All rights reserved. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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|
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/* |
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* @test TestRefprocSanity |
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* @summary Test that null references/referents work fine |
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* @key gc |
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* @requires vm.gc.Shenandoah & !vm.graal.enabled |
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* |
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* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
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* -XX:+UseShenandoahGC |
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* -XX:+ShenandoahVerify |
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* TestRefprocSanity |
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* |
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* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
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* -XX:+UseShenandoahGC |
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* TestRefprocSanity |
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* |
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* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
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* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive |
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* TestRefprocSanity |
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*/ |
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|
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/* |
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* @test TestRefprocSanity |
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* @summary Test that null references/referents work fine |
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* @key gc |
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* @requires vm.gc.Shenandoah & !vm.graal.enabled |
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* |
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* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
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* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal |
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* -XX:+ShenandoahVerify |
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* TestRefprocSanity |
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* |
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* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
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* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal |
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* TestRefprocSanity |
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* |
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* @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
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* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal -XX:ShenandoahGCHeuristics=aggressive |
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* TestRefprocSanity |
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*/ |
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import java.lang.ref.*; |
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public class TestRefprocSanity { |
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static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation |
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static final int WINDOW = 10_000; |
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static final Reference<MyObject>[] refs = new Reference[WINDOW]; |
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public static void main(String[] args) throws Exception { |
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long count = TARGET_MB * 1024 * 1024 / 32; |
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int rIdx = 0; |
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ReferenceQueue rq = new ReferenceQueue(); |
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for (int c = 0; c < WINDOW; c++) { |
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refs[c] = select(c, new MyObject(c), rq); |
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} |
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for (int c = 0; c < count; c++) { |
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verifyRefAt(rIdx); |
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refs[rIdx] = select(c, new MyObject(rIdx), rq); |
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rIdx++; |
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if (rIdx >= WINDOW) { |
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rIdx = 0; |
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} |
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while (rq.poll() != null); // drain |
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} |
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} |
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static Reference<MyObject> select(int v, MyObject ext, ReferenceQueue rq) { |
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switch (v % 10) { |
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case 0: return new SoftReference<MyObject>(null); |
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case 1: return new SoftReference<MyObject>(null, rq); |
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case 2: return new SoftReference<MyObject>(ext); |
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case 3: return new SoftReference<MyObject>(ext, rq); |
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case 4: return new WeakReference<MyObject>(null); |
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case 5: return new WeakReference<MyObject>(null, rq); |
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case 6: return new WeakReference<MyObject>(ext); |
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case 7: return new WeakReference<MyObject>(ext, rq); |
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case 8: return new PhantomReference<MyObject>(null, rq); |
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case 9: return new PhantomReference<MyObject>(ext, rq); |
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default: throw new IllegalStateException(); |
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} |
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} |
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static void verifyRefAt(int idx) { |
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Reference<MyObject> ref = refs[idx]; |
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MyObject mo = ref.get(); |
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if (mo != null && mo.x != idx) { |
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throw new IllegalStateException("Referent tag is incorrect: " + mo.x + ", should be " + idx); |
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} |
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} |
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static class MyObject { |
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final int x; |
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public MyObject(int x) { |
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this.x = x; |
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} |
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} |
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} |