| /* |
| * 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()); |
| } |
| } |