--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/arguments/TestObjectTenuringFlags.java Wed Mar 26 12:49:34 2014 +0100
@@ -0,0 +1,215 @@
+/*
+* 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 TestObjectTenuringFlags
+ * @key gc
+ * @bug 6521376
+ * @summary Tests argument processing for NeverTenure, AlwaysTenure,
+ * and MaxTenuringThreshold
+ * @library /testlibrary
+ * @build TestObjectTenuringFlags FlagsValue
+ * @run main/othervm TestObjectTenuringFlags
+ */
+
+import com.oracle.java.testlibrary.*;
+
+import java.util.*;
+
+public class TestObjectTenuringFlags {
+ public static void main(String args[]) throws Exception {
+ // default case
+ runTenuringFlagsConsistencyTest(
+ new String[]{},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
+
+ // valid cases
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:+NeverTenure"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:+AlwaysTenure"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=0"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=5"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 5));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=10"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 10));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=15"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 15));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=16"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:InitialTenuringThreshold=0"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 0, 15));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:InitialTenuringThreshold=5"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 5, 15));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:InitialTenuringThreshold=10"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 10, 15));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:InitialTenuringThreshold=15"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 15, 15));
+
+ // "Last option wins" cases
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:+AlwaysTenure", "-XX:+NeverTenure"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:+NeverTenure", "-XX:+AlwaysTenure"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=16", "-XX:+AlwaysTenure"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:+AlwaysTenure", "-XX:MaxTenuringThreshold=16"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, false /* neverTenure */, 7, 16));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=0", "-XX:+NeverTenure"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(false /* alwaysTenure */, true /* neverTenure */, 7, 16));
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:+NeverTenure", "-XX:MaxTenuringThreshold=0"},
+ false /* shouldFail */,
+ new ExpectedTenuringFlags(true /* alwaysTenure */, false /* neverTenure */, 0, 0));
+
+ // Illegal cases
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:MaxTenuringThreshold=17"},
+ true /* shouldFail */,
+ new ExpectedTenuringFlags());
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:InitialTenuringThreshold=16"},
+ true /* shouldFail */,
+ new ExpectedTenuringFlags());
+
+ runTenuringFlagsConsistencyTest(
+ new String[]{"-XX:InitialTenuringThreshold=17"},
+ true /* shouldFail */,
+ new ExpectedTenuringFlags());
+ }
+
+ private static void runTenuringFlagsConsistencyTest(String[] tenuringFlags,
+ boolean shouldFail,
+ ExpectedTenuringFlags expectedFlags) throws Exception {
+ List<String> vmOpts = new ArrayList<>();
+ if (tenuringFlags.length > 0) {
+ Collections.addAll(vmOpts, tenuringFlags);
+ }
+ Collections.addAll(vmOpts, "-XX:+PrintFlagsFinal", "-version");
+
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));
+ OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+ if (shouldFail) {
+ output.shouldHaveExitValue(1);
+ } else {
+ output.shouldHaveExitValue(0);
+ String stdout = output.getStdout();
+ checkTenuringFlagsConsistency(stdout, expectedFlags);
+ }
+ }
+
+ private static void checkTenuringFlagsConsistency(String output, ExpectedTenuringFlags expectedFlags) {
+ if (expectedFlags.alwaysTenure != FlagsValue.getFlagBoolValue("AlwaysTenure", output)) {
+ throw new RuntimeException(
+ "Actual flag AlwaysTenure " + FlagsValue.getFlagBoolValue("AlwaysTenure", output) +
+ " is not equal to expected flag AlwaysTenure " + expectedFlags.alwaysTenure);
+ }
+
+ if (expectedFlags.neverTenure != FlagsValue.getFlagBoolValue("NeverTenure", output)) {
+ throw new RuntimeException(
+ "Actual flag NeverTenure " + FlagsValue.getFlagBoolValue("NeverTenure", output) +
+ " is not equal to expected flag NeverTenure " + expectedFlags.neverTenure);
+ }
+
+ if (expectedFlags.initialTenuringThreshold != FlagsValue.getFlagLongValue("InitialTenuringThreshold", output)) {
+ throw new RuntimeException(
+ "Actual flag InitialTenuringThreshold " + FlagsValue.getFlagLongValue("InitialTenuringThreshold", output) +
+ " is not equal to expected flag InitialTenuringThreshold " + expectedFlags.initialTenuringThreshold);
+ }
+
+ if (expectedFlags.maxTenuringThreshold != FlagsValue.getFlagLongValue("MaxTenuringThreshold", output)) {
+ throw new RuntimeException(
+ "Actual flag MaxTenuringThreshold " + FlagsValue.getFlagLongValue("MaxTenuringThreshold", output) +
+ " is not equal to expected flag MaxTenuringThreshold " + expectedFlags.maxTenuringThreshold);
+ }
+ }
+}
+
+class ExpectedTenuringFlags {
+ public boolean alwaysTenure;
+ public boolean neverTenure;
+ public long initialTenuringThreshold;
+ public long maxTenuringThreshold;
+
+ public ExpectedTenuringFlags(boolean alwaysTenure,
+ boolean neverTenure,
+ long initialTenuringThreshold,
+ long maxTenuringThreshold) {
+ this.alwaysTenure = alwaysTenure;
+ this.neverTenure = neverTenure;
+ this.initialTenuringThreshold = initialTenuringThreshold;
+ this.maxTenuringThreshold = maxTenuringThreshold;
+ }
+ public ExpectedTenuringFlags() {}
+}