139 lines
5.2 KiB
Java
139 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 AllocationCodeBlobTest
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* @summary testing of WB::allocate/freeCodeBlob()
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* @bug 8059624 8064669
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* @library /test/lib /
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* @modules java.base/jdk.internal.misc
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* java.management
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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:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
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* -XX:-SegmentedCodeCache
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* compiler.whitebox.AllocationCodeBlobTest
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
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* -XX:+SegmentedCodeCache
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* compiler.whitebox.AllocationCodeBlobTest
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*/
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package compiler.whitebox;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.InfiniteLoop;
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import jdk.test.whitebox.WhiteBox;
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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.EnumSet;
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public class AllocationCodeBlobTest {
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private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
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private static final long CODE_CACHE_SIZE
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= WHITE_BOX.getUintxVMFlag("ReservedCodeCacheSize");
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private static final int SIZE = 1;
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public static void main(String[] args) {
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// check that code unloading handles dummy blobs correctly
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Thread t = new Thread(
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new InfiniteLoop(WHITE_BOX::fullGC, 1L),
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"ForcedGC");
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t.setDaemon(true);
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System.out.println("Starting " + t.getName());
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t.start();
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EnumSet<BlobType> blobTypes = BlobType.getAvailable();
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for (BlobType type : blobTypes) {
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new AllocationCodeBlobTest(type).test();
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}
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// check that deoptimization works well w/ dummy blobs
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t = new Thread(
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new InfiniteLoop(WHITE_BOX::deoptimizeAll, 1L),
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"Deoptimize Thread");
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t.setDaemon(true);
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System.out.println("Starting " + t.getName());
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t.start();
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for (int i = 0; i < 10_000; ++i) {
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for (BlobType type : blobTypes) {
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long addr = WHITE_BOX.allocateCodeBlob(SIZE, type.id);
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}
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}
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}
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private final BlobType type;
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private final MemoryPoolMXBean bean;
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private AllocationCodeBlobTest(BlobType type) {
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this.type = type;
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bean = type.getMemoryPool();
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}
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private void test() {
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System.out.printf("type %s%n", type);
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// Measure the code cache usage after allocate/free.
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long start = getUsage();
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long addr1 = WHITE_BOX.allocateCodeBlob(SIZE, type.id);
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long firstAllocation = getUsage();
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WHITE_BOX.freeCodeBlob(addr1);
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long firstFree = getUsage();
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long addr2 = WHITE_BOX.allocateCodeBlob(SIZE, type.id);
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long secondAllocation = getUsage();
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WHITE_BOX.freeCodeBlob(addr2);
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// The following code may trigger resolving of invokedynamic
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// instructions and therefore method handle intrinsic creation
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// in the code cache. Make sure this is executed after measuring
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// the code cache usage.
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Asserts.assertNE(0, addr1, "first allocation failed");
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Asserts.assertNE(0, addr2, "second allocation failed");
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Asserts.assertLTE(start + SIZE, firstAllocation,
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"allocation should increase memory usage: "
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+ start + " + " + SIZE + " <= " + firstAllocation);
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Asserts.assertLTE(firstFree, firstAllocation,
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"free shouldn't increase memory usage: "
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+ firstFree + " <= " + firstAllocation);
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Asserts.assertEQ(firstAllocation, secondAllocation);
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System.out.println("allocating till possible...");
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ArrayList<Long> blobs = new ArrayList<>();
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int size = (int) (CODE_CACHE_SIZE >> 7);
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while ((addr1 = WHITE_BOX.allocateCodeBlob(size, type.id)) != 0) {
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blobs.add(addr1);
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}
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for (Long blob : blobs) {
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WHITE_BOX.freeCodeBlob(blob);
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}
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}
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private long getUsage() {
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return bean.getUsage().getUsed();
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}
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}
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