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/*
* Copyright (c) 2014, 2016, 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 PeakUsageTest
* @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=compileonly,null::*
* -XX:+SegmentedCodeCache
* compiler.codecache.jmx.PeakUsageTest
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
* -XX:-SegmentedCodeCache
* compiler.codecache.jmx.PeakUsageTest
* @summary testing of getPeakUsage() and resetPeakUsage for
* segmented code cache
*/
package compiler.codecache.jmx;
import sun.hotspot.code.BlobType;
import java.lang.management.MemoryPoolMXBean;
public class PeakUsageTest {
private final BlobType btype;
public PeakUsageTest(BlobType btype) {
this.btype = btype;
}
public static void main(String[] args) {
for (BlobType btype : BlobType.getAvailable()) {
new PeakUsageTest(btype).runTest();
}
}
protected void runTest() {
MemoryPoolMXBean bean = btype.getMemoryPool();
bean.resetPeakUsage();
long addr = CodeCacheUtils.WB.allocateCodeBlob(
CodeCacheUtils.ALLOCATION_SIZE, btype.id);
try {
/*
Always save peakUsage after saving currentUsage. Reversing the order
can lead to inconsistent results (currentUsage > peakUsage) because
of intermediate allocations.
*/
long currUsage = bean.getUsage().getUsed();
long peakUsage = bean.getPeakUsage().getUsed();
CodeCacheUtils.assertEQorLTE(btype, currUsage,
peakUsage,
"Peak usage does not match usage after allocation for "
+ bean.getName());
} finally {
if (addr != 0) {
CodeCacheUtils.WB.freeCodeBlob(addr);
}
}
bean.resetPeakUsage();
long currUsage = bean.getUsage().getUsed();
long peakUsage = bean.getPeakUsage().getUsed();
CodeCacheUtils.assertEQorLTE(btype, currUsage,
peakUsage,
"Code cache peak usage is not equal to usage after reset for "
+ bean.getName());
long addr2 = CodeCacheUtils.WB.allocateCodeBlob(
CodeCacheUtils.ALLOCATION_SIZE, btype.id);
try {
currUsage = bean.getUsage().getUsed();
peakUsage = bean.getPeakUsage().getUsed();
CodeCacheUtils.assertEQorLTE(btype, currUsage,
peakUsage,
"Code cache peak usage is not equal to usage after fresh "
+ "allocation for " + bean.getName());
} finally {
if (addr2 != 0) {
CodeCacheUtils.WB.freeCodeBlob(addr2);
}
}
System.out.printf("INFO: Scenario finished successfully for %s%n",
bean.getName());
}
}
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