| /* |
| * 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 GetUsageTest |
| * @summary testing of getUsage() for segmented code cache |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @library /test/lib / |
| * |
| * @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:-UseCodeCacheFlushing -XX:-MethodFlushing |
| * -XX:+SegmentedCodeCache |
| * compiler.codecache.jmx.GetUsageTest |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::* |
| * -XX:-UseCodeCacheFlushing -XX:-MethodFlushing |
| * -XX:-SegmentedCodeCache |
| * compiler.codecache.jmx.GetUsageTest |
| */ |
| |
| package compiler.codecache.jmx; |
| |
| import jdk.test.lib.Asserts; |
| import sun.hotspot.code.BlobType; |
| |
| import java.lang.management.MemoryPoolMXBean; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class GetUsageTest { |
| |
| private final BlobType btype; |
| private final int allocateSize; |
| |
| public GetUsageTest(BlobType btype, int allocSize) { |
| this.btype = btype; |
| this.allocateSize = allocSize; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| for (BlobType btype : BlobType.getAvailable()) { |
| for (int allocSize = 10; allocSize < 100000; allocSize *= 10) { |
| new GetUsageTest(btype, allocSize).runTest(); |
| } |
| } |
| } |
| |
| protected final Map<MemoryPoolMXBean, Long> getBeanUsages() { |
| Map<MemoryPoolMXBean, Long> beanUsages = new HashMap<>(); |
| for (BlobType bt : BlobType.getAvailable()) { |
| beanUsages.put(bt.getMemoryPool(), |
| bt.getMemoryPool().getUsage().getUsed()); |
| } |
| return beanUsages; |
| } |
| |
| protected void runTest() { |
| MemoryPoolMXBean[] predictableBeans = BlobType.getAvailable().stream() |
| .filter(CodeCacheUtils::isCodeHeapPredictable) |
| .map(BlobType::getMemoryPool) |
| .toArray(MemoryPoolMXBean[]::new); |
| Map<MemoryPoolMXBean, Long> initial = getBeanUsages(); |
| long addr = 0; |
| try { |
| addr = CodeCacheUtils.WB.allocateCodeBlob(allocateSize, btype.id); |
| Map<MemoryPoolMXBean, Long> current = getBeanUsages(); |
| long blockCount = Math.floorDiv(allocateSize |
| + CodeCacheUtils.getHeaderSize(btype) |
| + CodeCacheUtils.SEGMENT_SIZE - 1, CodeCacheUtils.SEGMENT_SIZE); |
| long usageUpperEstimate = Math.max(blockCount, |
| CodeCacheUtils.MIN_BLOCK_LENGTH) * CodeCacheUtils.SEGMENT_SIZE; |
| for (MemoryPoolMXBean entry : predictableBeans) { |
| long diff = current.get(entry) - initial.get(entry); |
| if (entry.equals(btype.getMemoryPool())) { |
| if (CodeCacheUtils.isCodeHeapPredictable(btype)) { |
| Asserts.assertFalse(diff <= 0L || diff > usageUpperEstimate, |
| String.format("Pool %s usage increase was reported " |
| + "unexpectedly as increased by %d using " |
| + "allocation size %d", entry.getName(), |
| diff, allocateSize)); |
| } |
| } else { |
| CodeCacheUtils.assertEQorGTE(btype, diff, 0L, |
| String.format("Pool %s usage changed unexpectedly while" |
| + " trying to increase: %s using allocation " |
| + "size %d", entry.getName(), |
| btype.getMemoryPool().getName(), allocateSize)); |
| } |
| } |
| } finally { |
| if (addr != 0) { |
| CodeCacheUtils.WB.freeCodeBlob(addr); |
| } |
| } |
| System.out.printf("INFO: Scenario finished successfully for %s%n", |
| btype.getMemoryPool().getName()); |
| } |
| } |