124 lines
5.2 KiB
Java
124 lines
5.2 KiB
Java
/*
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* Copyright (c) 2014, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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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* @test InitialAndMaxUsageTest
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* @summary testing of initial and max usage
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* @modules java.base/jdk.internal.misc
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* java.management
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* @library /test/lib /
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*
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:-UseCodeCacheFlushing
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* -XX:-MethodFlushing -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* -XX:CompileCommand=compileonly,null::* -XX:-UseLargePages
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* -XX:+SegmentedCodeCache
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* compiler.codecache.jmx.InitialAndMaxUsageTest
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* @run main/othervm -Xbootclasspath/a:. -XX:-UseCodeCacheFlushing
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* -XX:-MethodFlushing -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* -XX:CompileCommand=compileonly,null::* -XX:-UseLargePages
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* -XX:-SegmentedCodeCache
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* compiler.codecache.jmx.InitialAndMaxUsageTest
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*/
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package compiler.codecache.jmx;
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import jdk.test.lib.Asserts;
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import jdk.test.whitebox.code.BlobType;
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import java.lang.management.MemoryPoolMXBean;
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import java.util.ArrayList;
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import java.util.List;
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public class InitialAndMaxUsageTest {
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private static final double CACHE_USAGE_COEF = 0.95d;
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private final BlobType btype;
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private final boolean lowerBoundIsZero;
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private final long maxSize;
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public InitialAndMaxUsageTest(BlobType btype) {
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this.btype = btype;
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this.maxSize = btype.getSize();
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/* Only profiled code cache initial size should be 0, because of
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-XX:CompileCommand=compileonly,null::* non-methods might be not empty,
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as well as non-profiled methods, because it's used as fallback in
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case non-methods is full */
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lowerBoundIsZero = btype == BlobType.MethodProfiled;
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}
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public static void main(String[] args) {
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for (BlobType btype : BlobType.getAvailable()) {
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new InitialAndMaxUsageTest(btype).runTest();
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}
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}
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private boolean canAllocate(double size, long maxSize, MemoryPoolMXBean bean) {
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// Don't fill too much to have space for adapters. So, stop after crossing 95% and
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// don't allocate in case we'll cross 97% on next allocation.
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double used = bean.getUsage().getUsed();
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return (used <= CACHE_USAGE_COEF * maxSize) &&
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(used + size <= (CACHE_USAGE_COEF + 0.02d) * maxSize);
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}
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protected void runTest() {
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long headerSize = CodeCacheUtils.getHeaderSize(btype);
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MemoryPoolMXBean bean = btype.getMemoryPool();
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long initialUsage = btype.getMemoryPool().getUsage().getUsed();
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System.out.printf("INFO: trying to test %s of max size %d and initial"
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+ " usage %d%n", bean.getName(), maxSize, initialUsage);
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Asserts.assertLT(initialUsage + headerSize + 1L, maxSize,
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"Initial usage is close to total size for " + bean.getName());
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if (lowerBoundIsZero) {
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Asserts.assertEQ(initialUsage, 0L, "Unexpected initial usage");
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}
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ArrayList<Long> blobs = new ArrayList<>();
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long minAllocationUnit = Math.max(1, CodeCacheUtils.MIN_ALLOCATION - headerSize);
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/* now filling code cache with large-sized allocation first, since
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lots of small allocations takes too much time, so, just a small
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optimization */
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try {
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for (long size = 100_000 * minAllocationUnit; size > 0; size /= 10) {
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long blob = 0;
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while (canAllocate(size, maxSize, bean) &&
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(blob = CodeCacheUtils.WB.allocateCodeBlob(size, btype.id)) != 0) {
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blobs.add(blob);
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}
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}
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Asserts.assertGT((double) bean.getUsage().getUsed(),
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CACHE_USAGE_COEF * maxSize, String.format("Unable to fill "
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+ "more than %f of %s. Reported usage is %d ",
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CACHE_USAGE_COEF, bean.getName(),
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bean.getUsage().getUsed()));
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} finally {
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for (long entry : blobs) {
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CodeCacheUtils.WB.freeCodeBlob(entry);
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}
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}
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System.out.printf("INFO: Scenario finished successfully for %s%n",
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bean.getName());
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}
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}
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