--- old/src/share/vm/runtime/arguments.cpp 2013-05-16 23:54:37.925139610 +0200 +++ new/src/share/vm/runtime/arguments.cpp 2013-05-16 23:54:37.737139617 +0200 @@ -3044,6 +3044,11 @@ set_mode_flags(_int); } + // eventually fix up InitialTenuringThreshold if only MaxTenuringThreshold is set + if (FLAG_IS_DEFAULT(InitialTenuringThreshold) && (InitialTenuringThreshold > MaxTenuringThreshold)) { + FLAG_SET_ERGO(uintx, InitialTenuringThreshold, MaxTenuringThreshold); + } + #ifndef COMPILER2 // Don't degrade server performance for footprint if (FLAG_IS_DEFAULT(UseLargePages) && --- /dev/null 2013-04-16 09:14:15.018414535 +0200 +++ new/test/gc/arguments/TestInitialTenuringThreshold.java 2013-05-16 23:54:38.833139575 +0200 @@ -0,0 +1,75 @@ +/* +* Copyright (c) 2013, 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 TestInitialTenuringThreshold + * @key gc + * @bug 8014765 + * @summary Tests argument processing for initial tenuring threshold + * @library /testlibrary + * @run main/othervm TestInitialTenuringThreshold + * @author thomas.schatzl@oracle.com + */ + +import com.oracle.java.testlibrary.*; + +public class TestInitialTenuringThreshold { + + public static void runWithThresholds(int initial, int max, boolean shouldfail) throws Exception { + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( + "-XX:InitialTenuringThreshold=" + String.valueOf(initial), + "-XX:MaxTenuringThreshold=" + String.valueOf(max), + "-version" + ); + + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + if (shouldfail) { + output.shouldHaveExitValue(1); + } else { + output.shouldHaveExitValue(0); + } + } + + + public static void main(String args[]) throws Exception { + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( + // some value below the default value of InitialTenuringThreshold of 7 + "-XX:MaxTenuringThreshold=1", + "-version" + ); + + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + output.shouldHaveExitValue(0); + // successful tests + runWithThresholds(0, 10, false); + runWithThresholds(5, 5, false); + // failing tests + runWithThresholds(10, 0, true); + runWithThresholds(9, 8, true); + runWithThresholds(-1, 8, true); + runWithThresholds(8, -1, true); + runWithThresholds(8, 16, true); + runWithThresholds(16, 8, true); + } +} +