hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/MemoryUsageBenchmark.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/MemoryUsageBenchmark.java Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,200 @@
+/*
+ * Copyright (c) 2011, 2015, 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.
+ */
+package org.graalvm.compiler.hotspot.test;
+
+import static org.graalvm.compiler.debug.internal.MemUseTrackerImpl.getCurrentThreadAllocatedBytes;
+
+import org.graalvm.compiler.api.test.Graal;
+import org.graalvm.compiler.core.test.AllocSpy;
+import org.graalvm.compiler.debug.Debug;
+import org.graalvm.compiler.debug.DebugEnvironment;
+import org.graalvm.compiler.debug.internal.DebugScope;
+import org.graalvm.compiler.hotspot.CompilationTask;
+import org.graalvm.compiler.hotspot.CompileTheWorld;
+import org.graalvm.compiler.hotspot.CompileTheWorldOptions;
+import org.graalvm.compiler.hotspot.HotSpotGraalCompiler;
+import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
+
+import jdk.vm.ci.hotspot.HotSpotCompilationRequest;
+import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
+import jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider;
+import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
+import jdk.vm.ci.runtime.JVMCICompiler;
+
+/**
+ * Used to benchmark memory usage during Graal compilation.
+ *
+ * To benchmark:
+ *
+ * <pre>
+ * mx vm -XX:-UseJVMCIClassLoader -cp @org.graalvm.compiler.hotspot.test org.graalvm.compiler.hotspot.test.MemoryUsageBenchmark
+ * </pre>
+ *
+ * Memory analysis for a {@link CompileTheWorld} execution can also be performed. For example:
+ *
+ * <pre>
+ * mx --vm server vm -XX:-UseJVMCIClassLoader -Dgraal.CompileTheWorldClasspath=$HOME/SPECjvm2008/SPECjvm2008.jar -cp @org.graalvm.compiler.hotspot.test org.graalvm.compiler.hotspot.test.MemoryUsageBenchmark
+ * </pre>
+ */
+public class MemoryUsageBenchmark extends HotSpotGraalCompilerTest {
+
+ public static int simple(int a, int b) {
+ return a + b;
+ }
+
+ public static synchronized int complex(CharSequence cs) {
+ if (cs instanceof String) {
+ return cs.hashCode();
+ }
+
+ if (cs instanceof StringBuilder) {
+ int[] hash = {0};
+ cs.chars().forEach(c -> hash[0] += c);
+ return hash[0];
+ }
+
+ int res = 0;
+
+ // Exercise lock elimination
+ synchronized (cs) {
+ res = cs.length();
+ }
+ synchronized (cs) {
+ res = cs.hashCode() ^ 31;
+ }
+
+ for (int i = 0; i < cs.length(); i++) {
+ res *= cs.charAt(i);
+ }
+
+ // A fixed length loop with some canonicalizable arithmetics will
+ // activate loop unrolling and more canonicalization
+ int sum = 0;
+ for (int i = 0; i < 5; i++) {
+ sum += i * 2;
+ }
+ res += sum;
+
+ // Activates escape-analysis
+ res += new String("asdf").length();
+
+ return res;
+ }
+
+ static class MemoryUsageCloseable implements AutoCloseable {
+
+ private final long start;
+ private final String name;
+
+ MemoryUsageCloseable(String name) {
+ this.name = name;
+ this.start = getCurrentThreadAllocatedBytes();
+ }
+
+ @Override
+ public void close() {
+ long end = getCurrentThreadAllocatedBytes();
+ long allocated = end - start;
+ System.out.println(name + ": " + allocated);
+ }
+ }
+
+ public static void main(String[] args) {
+ // Ensure a Graal runtime is initialized prior to Debug being initialized as the former
+ // may include processing command line options used by the latter.
+ Graal.getRuntime();
+
+ // Ensure a debug configuration for this thread is initialized
+ if (Debug.isEnabled() && DebugScope.getConfig() == null) {
+ DebugEnvironment.initialize(System.out);
+ }
+ new MemoryUsageBenchmark().run();
+ }
+
+ @SuppressWarnings("try")
+ private void doCompilation(String methodName, String label) {
+ HotSpotResolvedJavaMethod method = (HotSpotResolvedJavaMethod) getResolvedJavaMethod(methodName);
+
+ // invalidate any existing compiled code
+ method.reprofile();
+
+ long jvmciEnv = 0L;
+
+ try (MemoryUsageCloseable c = label == null ? null : new MemoryUsageCloseable(label)) {
+ HotSpotJVMCIRuntimeProvider runtime = HotSpotJVMCIRuntime.runtime();
+ int entryBCI = JVMCICompiler.INVOCATION_ENTRY_BCI;
+ HotSpotCompilationRequest request = new HotSpotCompilationRequest(method, entryBCI, jvmciEnv);
+ CompilationTask task = new CompilationTask(runtime, (HotSpotGraalCompiler) runtime.getCompiler(), request, true, false);
+ task.runCompilation();
+ }
+ }
+
+ @SuppressWarnings("try")
+ private void allocSpyCompilation(String methodName) {
+ if (AllocSpy.isEnabled()) {
+ HotSpotResolvedJavaMethod method = (HotSpotResolvedJavaMethod) getResolvedJavaMethod(methodName);
+
+ // invalidate any existing compiled code
+ method.reprofile();
+
+ long jvmciEnv = 0L;
+ try (AllocSpy as = AllocSpy.open(methodName)) {
+ HotSpotJVMCIRuntimeProvider runtime = HotSpotJVMCIRuntime.runtime();
+ HotSpotCompilationRequest request = new HotSpotCompilationRequest(method, JVMCICompiler.INVOCATION_ENTRY_BCI, jvmciEnv);
+ CompilationTask task = new CompilationTask(runtime, (HotSpotGraalCompiler) runtime.getCompiler(), request, true, false);
+ task.runCompilation();
+ }
+ }
+ }
+
+ private static final boolean verbose = Boolean.getBoolean("verbose");
+
+ private void compileAndTime(String methodName) {
+
+ // Parse in eager mode to resolve methods/fields/classes
+ parseEager(methodName, AllowAssumptions.YES);
+
+ // Warm up and initialize compiler phases used by this compilation
+ for (int i = 0; i < 10; i++) {
+ doCompilation(methodName, verbose ? methodName + "[warmup-" + i + "]" : null);
+ }
+
+ doCompilation(methodName, methodName);
+ }
+
+ public void run() {
+ compileAndTime("simple");
+ compileAndTime("complex");
+ if (CompileTheWorldOptions.CompileTheWorldClasspath.getValue() != CompileTheWorld.SUN_BOOT_CLASS_PATH) {
+ HotSpotJVMCIRuntimeProvider runtime = HotSpotJVMCIRuntime.runtime();
+ CompileTheWorld ctw = new CompileTheWorld(runtime, (HotSpotGraalCompiler) runtime.getCompiler());
+ try {
+ ctw.compile();
+ } catch (Throwable e) {
+ e.printStackTrace();
+ }
+ }
+ allocSpyCompilation("simple");
+ allocSpyCompilation("complex");
+ }
+}