--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/rtm/method_options/TestUseRTMLockElidingOption.java Fri Apr 11 00:35:23 2014 +0400
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 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.
+ *
+ */
+
+/**
+ * @test
+ * @bug 8031320
+ * @summary Verify that UseRTMLockEliding option could be applied to
+ * specified method and that such method will not be deoptimized
+ * on high abort ratio.
+ * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
+ * @build TestUseRTMLockElidingOption
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ * -XX:+WhiteBoxAPI TestUseRTMLockElidingOption
+ */
+
+import java.util.List;
+import com.oracle.java.testlibrary.*;
+import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
+import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
+import rtm.*;
+import rtm.predicate.SupportedCPU;
+import rtm.predicate.SupportedVM;
+
+/**
+ * Test verifies that method tagged with option <i>UseRTMLockElidingOption</i>
+ * will use RTM-based lock elision, but will be never deoptimized with
+ * <i>rtm_state_change reason</i>.
+ * Test invokes compiled method and checks that no deoptimization with
+ * <i>rtm_state_change</i> reason had happened and that that VM output
+ * contains RTM locking statistics for compiled method and that total locks
+ * count equals to method's invocations.
+ * Since last assert is pretty strict, test uses -XX:RTMRetryCount=0 in order
+ * to avoid issue with retriable aborts described in
+ * {@link TestUseRTMAfterLockInflation}.
+ */
+public class TestUseRTMLockElidingOption extends CommandLineOptionTest {
+ private TestUseRTMLockElidingOption() {
+ super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
+ }
+
+ @Override
+ public void runTestCases() throws Throwable {
+ verifyOption(false);
+ verifyOption(true);
+ }
+
+ public void verifyOption(boolean useStackLock) throws Throwable {
+ AbortProvoker provoker = AbortType.XABORT.provoker();
+ String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
+ (useStackLock ? "use" : "no"));
+ String methodOption = String.format("-XX:CompileCommand=option," +
+ "%s,UseRTMLockEliding", provoker.getMethodWithLockName());
+
+ OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
+ logFileName,
+ provoker,
+ CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
+ useStackLock),
+ methodOption,
+ "-XX:RTMTotalCountIncrRate=1",
+ "-XX:RTMRetryCount=0",
+ "-XX:+UseRTMDeopt",
+ "-XX:+PrintPreciseRTMLockingStatistics",
+ provoker.getClass().getName(),
+ AbortType.XABORT.toString(),
+ Boolean.toString(!useStackLock)
+ );
+
+ outputAnalyzer.shouldHaveExitValue(0);
+
+ int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName);
+
+ Asserts.assertEQ(firedTraps, 0,
+ "Method deoptimization with rtm_state_change is unexpected");
+
+ List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
+ provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
+
+ Asserts.assertEQ(statistics.size(), 1,
+ "VM output should contain exactly one RTM locking "
+ + "statistics entry for method "
+ + provoker.getMethodWithLockName());
+
+ RTMLockingStatistics lock = statistics.get(0);
+
+ Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
+ "Expected to get total locks count equal to total amount of "
+ + "lock attempts.");
+ }
+
+ public static void main(String args[]) throws Throwable {
+ new TestUseRTMLockElidingOption().test();
+ }
+}