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/*
* Copyright (c) 2014, 2020, 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 OverloadCompileQueueTest
* @key stress randomness
* @summary stressing code cache by overloading compile queues
* @library /test/lib /
* @modules java.base/jdk.internal.misc
* java.management
*
* @build sun.hotspot.WhiteBox
* @run driver ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI
* -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method
* -XX:-SegmentedCodeCache
* compiler.codecache.stress.OverloadCompileQueueTest
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI
* -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method
* -XX:+SegmentedCodeCache
* compiler.codecache.stress.OverloadCompileQueueTest
*/
package compiler.codecache.stress;
import jdk.test.lib.Platform;
import jdk.test.lib.Utils;
import java.lang.reflect.Method;
import java.util.stream.IntStream;
import java.util.Random;
public class OverloadCompileQueueTest implements Runnable {
private static final int MAX_SLEEP = 10000;
private static final String METHOD_TO_ENQUEUE = "method";
private static final int LEVEL_SIMPLE = 1;
private static final int LEVEL_FULL_OPTIMIZATION = 4;
private static final boolean TIERED_COMPILATION
= Helper.WHITE_BOX.getBooleanVMFlag("TieredCompilation");
private static final int TIERED_STOP_AT_LEVEL
= Helper.WHITE_BOX.getIntxVMFlag("TieredStopAtLevel").intValue();
private static final int[] AVAILABLE_LEVELS;
private final Random rng = Utils.getRandomInstance();
static {
if (TIERED_COMPILATION) {
AVAILABLE_LEVELS = IntStream
.rangeClosed(LEVEL_SIMPLE, TIERED_STOP_AT_LEVEL)
.toArray();
} else if (Platform.isServer() && !Platform.isEmulatedClient()) {
AVAILABLE_LEVELS = new int[] { LEVEL_FULL_OPTIMIZATION };
} else if (Platform.isClient() || Platform.isMinimal() || Platform.isEmulatedClient()) {
AVAILABLE_LEVELS = new int[] { LEVEL_SIMPLE };
} else {
throw new Error("TESTBUG: unknown VM: " + Platform.vmName);
}
}
public static void main(String[] args) {
if (Platform.isInt()) {
throw new Error("TESTBUG: test can not be run in interpreter");
}
new CodeCacheStressRunner(new OverloadCompileQueueTest()).runTest();
}
public OverloadCompileQueueTest() {
Helper.startInfiniteLoopThread(this::lockUnlock, 100L);
}
@Override
public void run() {
Helper.TestCase obj = Helper.TestCase.get();
Class clazz = obj.getClass();
Method mEnqueue;
try {
mEnqueue = clazz.getMethod(METHOD_TO_ENQUEUE);
} catch (NoSuchMethodException | SecurityException e) {
throw new Error(String.format(
"TESTBUG: cannot get method '%s' of class %s",
METHOD_TO_ENQUEUE, clazz.getName()), e);
}
for (int compLevel : AVAILABLE_LEVELS) {
Helper.WHITE_BOX.enqueueMethodForCompilation(mEnqueue, compLevel);
}
}
private void lockUnlock() {
try {
int sleep = rng.nextInt(MAX_SLEEP);
Helper.WHITE_BOX.lockCompilation();
Thread.sleep(sleep);
} catch (InterruptedException e) {
throw new Error("TESTBUG: lockUnlocker thread was unexpectedly interrupted", e);
} finally {
Helper.WHITE_BOX.unlockCompilation();
}
}
}
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