| /* |
| * 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 CheckSegmentedCodeCache |
| * @bug 8015774 |
| * @summary Checks VM options related to the segmented code cache |
| * @library /testlibrary /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * |
| * @build compiler.codecache.CheckSegmentedCodeCache |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI |
| * compiler.codecache.CheckSegmentedCodeCache |
| */ |
| |
| package compiler.codecache; |
| |
| import jdk.test.lib.OutputAnalyzer; |
| import jdk.test.lib.Platform; |
| import jdk.test.lib.ProcessTools; |
| import sun.hotspot.WhiteBox; |
| |
| public class CheckSegmentedCodeCache { |
| private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); |
| // Code heap names |
| private static final String NON_METHOD = "CodeHeap 'non-nmethods'"; |
| private static final String PROFILED = "CodeHeap 'profiled nmethods'"; |
| private static final String NON_PROFILED = "CodeHeap 'non-profiled nmethods'"; |
| |
| private static void verifySegmentedCodeCache(ProcessBuilder pb, boolean enabled) throws Exception { |
| OutputAnalyzer out = new OutputAnalyzer(pb.start()); |
| out.shouldHaveExitValue(0); |
| if (enabled) { |
| try { |
| // Non-nmethod code heap should be always available with the segmented code cache |
| out.shouldContain(NON_METHOD); |
| } catch (RuntimeException e) { |
| // Check if TieredCompilation is disabled (in a client VM) |
| if(!out.getOutput().contains("-XX:+TieredCompilation not supported in this VM")) { |
| // Code cache is not segmented |
| throw new RuntimeException("No code cache segmentation."); |
| } |
| } |
| } else { |
| out.shouldNotContain(NON_METHOD); |
| } |
| } |
| |
| private static void verifyCodeHeapNotExists(ProcessBuilder pb, String... heapNames) throws Exception { |
| OutputAnalyzer out = new OutputAnalyzer(pb.start()); |
| out.shouldHaveExitValue(0); |
| for (String name : heapNames) { |
| out.shouldNotContain(name); |
| } |
| } |
| |
| private static void failsWith(ProcessBuilder pb, String message) throws Exception { |
| OutputAnalyzer out = new OutputAnalyzer(pb.start()); |
| out.shouldContain(message); |
| out.shouldHaveExitValue(1); |
| } |
| |
| /** |
| * Check the result of segmented code cache related VM options. |
| */ |
| public static void main(String[] args) throws Exception { |
| ProcessBuilder pb; |
| |
| // Disabled with ReservedCodeCacheSize < 240MB |
| pb = ProcessTools.createJavaProcessBuilder("-XX:ReservedCodeCacheSize=239m", |
| "-XX:+PrintCodeCache", "-version"); |
| verifySegmentedCodeCache(pb, false); |
| |
| // Disabled without TieredCompilation |
| pb = ProcessTools.createJavaProcessBuilder("-XX:-TieredCompilation", |
| "-XX:+PrintCodeCache", "-version"); |
| verifySegmentedCodeCache(pb, false); |
| |
| // Enabled with TieredCompilation and ReservedCodeCacheSize >= 240MB |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+TieredCompilation", |
| "-XX:ReservedCodeCacheSize=240m", |
| "-XX:+PrintCodeCache", "-version"); |
| verifySegmentedCodeCache(pb, true); |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+TieredCompilation", |
| "-XX:ReservedCodeCacheSize=400m", |
| "-XX:+PrintCodeCache", "-version"); |
| verifySegmentedCodeCache(pb, true); |
| |
| // Always enabled if SegmentedCodeCache is set |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache", |
| "-XX:-TieredCompilation", |
| "-XX:ReservedCodeCacheSize=239m", |
| "-XX:+PrintCodeCache", "-version"); |
| verifySegmentedCodeCache(pb, true); |
| |
| // The profiled and non-profiled code heaps should not be available in |
| // interpreter-only mode |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache", |
| "-Xint", |
| "-XX:+PrintCodeCache", "-version"); |
| verifyCodeHeapNotExists(pb, PROFILED, NON_PROFILED); |
| |
| // If we stop compilation at CompLevel_none or CompLevel_simple we |
| // don't need a profiled code heap. |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache", |
| "-XX:TieredStopAtLevel=0", |
| "-XX:+PrintCodeCache", "-version"); |
| verifyCodeHeapNotExists(pb, PROFILED); |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache", |
| "-XX:TieredStopAtLevel=1", |
| "-XX:+PrintCodeCache", "-version"); |
| verifyCodeHeapNotExists(pb, PROFILED); |
| |
| // Fails with too small non-nmethod code heap size |
| pb = ProcessTools.createJavaProcessBuilder("-XX:NonNMethodCodeHeapSize=100K"); |
| failsWith(pb, "Invalid NonNMethodCodeHeapSize"); |
| |
| // Fails if code heap sizes do not add up |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache", |
| "-XX:ReservedCodeCacheSize=10M", |
| "-XX:NonNMethodCodeHeapSize=5M", |
| "-XX:ProfiledCodeHeapSize=5M", |
| "-XX:NonProfiledCodeHeapSize=5M"); |
| failsWith(pb, "Invalid code heap sizes"); |
| |
| // Fails if not enough space for VM internal code |
| long minUseSpace = WHITE_BOX.getUintxVMFlag("CodeCacheMinimumUseSpace"); |
| // minimum size: CodeCacheMinimumUseSpace DEBUG_ONLY(* 3) |
| long minSize = (Platform.isDebugBuild() ? 3 : 1) * minUseSpace; |
| pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache", |
| "-XX:ReservedCodeCacheSize=" + minSize, |
| "-XX:InitialCodeCacheSize=100K"); |
| failsWith(pb, "Not enough space in non-nmethod code heap to run VM"); |
| } |
| } |