--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/whitebox/DeoptimizeMultipleOSRTest.java Thu Oct 30 13:03:30 2014 +0100
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2013, 2014, 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.
+ */
+
+import sun.hotspot.WhiteBox;
+import java.lang.reflect.Executable;
+import java.lang.reflect.Method;
+
+/*
+ * @test DeoptimizeMultipleOSRTest
+ * @bug 8061817
+ * @library /testlibrary /testlibrary/whitebox
+ * @build DeoptimizeMultipleOSRTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,DeoptimizeMultipleOSRTest::triggerOSR DeoptimizeMultipleOSRTest
+ * @summary testing of WB::deoptimizeMethod()
+ */
+public class DeoptimizeMultipleOSRTest {
+ private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
+ private static final long BACKEDGE_THRESHOLD = 150000;
+ private Method method;
+ private int counter = 0;
+
+ public static void main(String[] args) throws Exception {
+ DeoptimizeMultipleOSRTest test = new DeoptimizeMultipleOSRTest();
+ test.test();
+ }
+
+ /**
+ * Triggers two different OSR compilations for the same method and
+ * checks if WhiteBox.deoptimizeMethod() deoptimizes both.
+ *
+ * @throws Exception
+ */
+ public void test() throws Exception {
+ method = DeoptimizeMultipleOSRTest.class.getDeclaredMethod("triggerOSR", boolean.class, long.class);
+ // Trigger two OSR compiled versions
+ triggerOSR(true, BACKEDGE_THRESHOLD);
+ triggerOSR(false, BACKEDGE_THRESHOLD);
+ // Wait for compilation
+ CompilerWhiteBoxTest.waitBackgroundCompilation(method);
+ // Deoptimize
+ WHITE_BOX.deoptimizeMethod(method, true);
+ if (WHITE_BOX.isMethodCompiled(method, true)) {
+ throw new AssertionError("Not all OSR compiled versions were deoptimized");
+ }
+ }
+
+ /**
+ * Triggers OSR compilations by executing loops.
+ *
+ * @param first Determines which loop to execute
+ * @param limit The number of loop iterations
+ */
+ public void triggerOSR(boolean first, long limit) {
+ if (limit != 1) {
+ // Warmup method to avoid uncommon traps
+ for (int i = 0; i < limit; ++i) {
+ triggerOSR(first, 1);
+ }
+ CompilerWhiteBoxTest.waitBackgroundCompilation(method);
+ }
+ if (first) {
+ // Trigger OSR compilation 1
+ for (int i = 0; i < limit; ++i) {
+ counter++;
+ }
+ } else {
+ // Trigger OSR compilation 2
+ for (int i = 0; i < limit; ++i) {
+ counter++;
+ }
+ }
+ }
+}