diff test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java @ 17873:ba8268c23fa2

8037860: Add tests to cover Intel RTM instructions support Reviewed-by: kvn, iignatyev Contributed-by: filipp.zhinkin@oracle.com
author iignatyev
date Fri, 11 Apr 2014 00:35:23 +0400
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java	Fri Apr 11 00:35:23 2014 +0400
@@ -0,0 +1,210 @@
+/*
+ * 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 if we use RTMDeopt, then deoptimization
+ *          caused by reason other then rtm_state_change will reset
+ *          method's RTM state. And if we don't use RTMDeopt, then
+ *          RTM state remain the same after such deoptimization.
+ * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
+ * @build TestRTMAfterNonRTMDeopt
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI TestRTMAfterNonRTMDeopt
+ */
+
+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;
+import sun.misc.Unsafe;
+
+/**
+ * To verify that with +UseRTMDeopt method's RTM state will be
+ * changed to ProfileRTM on deoptimization unrelated to
+ * rtm_state_change following sequence of events is used:
+ * <pre>
+ *
+ *     rtm state ^
+ *               |
+ *       UseRTM  |      ******|     ******
+ *               |            |
+ *   ProfileRTM  |******|     |*****|
+ *               |      |     |     |
+ *              0-------|-----|-----|---------------------&gt; time
+ *                      |     |     \ force abort
+ *                      |     |
+ *                      |     \ force deoptimization
+ *                      |
+ *                      \ force xabort
+ * </pre>
+ * When xabort is forced by native method call method should
+ * change it's state to UseRTM, because we use RTMAbortRatio=100
+ * and low RTMLockingThreshold, so at this point actual abort
+ * ratio will be below 100% and there should be enough lock
+ * attempts to recompile method without RTM profiling.
+ */
+public class TestRTMAfterNonRTMDeopt extends CommandLineOptionTest {
+    private static final int ABORT_THRESHOLD = 1000;
+    private static final String RANGE_CHECK = "range_check";
+
+    private TestRTMAfterNonRTMDeopt() {
+        super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
+    }
+
+    @Override
+    protected void runTestCases() throws Throwable {
+        verifyRTMAfterDeopt(false, false);
+        verifyRTMAfterDeopt(true, false);
+
+        verifyRTMAfterDeopt(false, true);
+        verifyRTMAfterDeopt(true, true);
+    }
+
+    private void verifyRTMAfterDeopt(boolean useStackLock,
+            boolean useRTMDeopt) throws Throwable {
+        CompilableTest test = new Test();
+        String logFile = String.format("rtm_%s_stack_lock_%s_deopt.xml",
+                (useStackLock ? "use" : "no"), (useRTMDeopt ? "use" : "no"));
+
+        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
+                logFile,
+                test,
+                "-XX:CompileThreshold=1",
+                CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
+                        useStackLock),
+                CommandLineOptionTest.prepareBooleanFlag("UseRTMDeopt",
+                        useRTMDeopt),
+                "-XX:RTMAbortRatio=100",
+                CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
+                        TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD),
+                CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",
+                        TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD / 2L),
+                "-XX:RTMTotalCountIncrRate=1",
+                "-XX:+PrintPreciseRTMLockingStatistics",
+                Test.class.getName(),
+                Boolean.toString(!useStackLock)
+        );
+
+        outputAnalyzer.shouldHaveExitValue(0);
+
+        int traps = RTMTestBase.firedRTMStateChangeTraps(logFile);
+
+        if (useRTMDeopt) {
+            Asserts.assertEQ(traps, 2, "Two uncommon traps with "
+                    + "reason rtm_state_change should be fired.");
+        } else {
+            Asserts.assertEQ(traps, 0, "No uncommon traps with "
+                    + "reason rtm_state_change should be fired.");
+        }
+
+        int rangeCheckTraps = RTMTestBase.firedUncommonTraps(logFile,
+                TestRTMAfterNonRTMDeopt.RANGE_CHECK);
+
+        Asserts.assertEQ(rangeCheckTraps, 1,
+                "One range_check uncommon trap should be fired.");
+
+        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
+                test.getMethodWithLockName(), outputAnalyzer.getOutput());
+
+        int expectedStatEntries = (useRTMDeopt ? 4 : 2);
+
+        Asserts.assertEQ(statistics.size(), expectedStatEntries,
+                String.format("VM output should contain %d RTM locking "
+                        + "statistics entries.", expectedStatEntries));
+    }
+
+    public static class Test implements CompilableTest {
+        // Following field have to be static in order to avoid escape analysis.
+        @SuppressWarnings("UnsuedDeclaration")
+        private static int field = 0;
+        private static final int ITERATIONS = 10000;
+        private static final int RANGE_CHECK_AT = ITERATIONS / 2;
+        private static final Unsafe UNSAFE = Utils.getUnsafe();
+        private final Object monitor = new Object();
+
+        @Override
+        public String getMethodWithLockName() {
+            return this.getClass().getName() + "::forceAbort";
+        }
+
+        @Override
+        public String[] getMethodsToCompileNames() {
+            return new String[] {
+                getMethodWithLockName(),
+                sun.misc.Unsafe.class.getName() + "::forceAbort"
+            };
+        }
+
+        public void forceAbort(int a[], boolean abort) {
+            try {
+                synchronized(monitor) {
+                    a[0]++;
+                    if (abort) {
+                        Test.field = Test.UNSAFE.addressSize();
+                    }
+                }
+            } catch (Throwable t) {
+                // suppress any throwables
+            }
+        }
+
+        /**
+         * Usage:
+         * Test &lt;inflate monitor&gt;
+         */
+        public static void main(String args[]) throws Throwable {
+            Test t = new Test();
+
+            if (Boolean.valueOf(args[0])) {
+                AbortProvoker.inflateMonitor(t.monitor);
+            }
+
+            int tmp[] = new int[1];
+
+            for (int i = 0; i < Test.ITERATIONS; i++ ) {
+                if (i == Test.RANGE_CHECK_AT) {
+                    t.forceAbort(new int[0], false);
+                } else {
+                    boolean isThreshold
+                            = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD);
+                    boolean isThresholdPlusRange
+                            = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD
+                            + Test.RANGE_CHECK_AT);
+                    t.forceAbort(tmp, isThreshold || isThresholdPlusRange);
+                }
+            }
+        }
+    }
+
+    public static void main(String args[]) throws Throwable {
+        new TestRTMAfterNonRTMDeopt().test();
+    }
+}
+