1 /*
2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.
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9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22  */
23 
24 /*
25  * @test
26  * @bug 8196294
27  * @summary when loop strip is enabled, LoopStripMiningIterShortLoop should be not null
28  * @requires vm.flavor == "server"
29  * @library /test/lib /
30  * @modules java.base/jdk.internal.misc
31  *          java.management
32  * @run driver CheckLoopStripMiningIterShortLoop
33  */
34 
35 import jdk.test.lib.process.OutputAnalyzer;
36 import jdk.test.lib.process.ProcessTools;
37 
38 public class CheckLoopStripMiningIterShortLoop {
39 
main(String[] args)40     public static void main(String[] args) throws Exception {
41         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", "-XX:+PrintFlagsFinal", "-version");
42         OutputAnalyzer out = new OutputAnalyzer(pb.start());
43 
44         long iter = Long.parseLong(out.firstMatch("uintx LoopStripMiningIter                      = (\\d+)", 1));
45         long iterShort = Long.parseLong(out.firstMatch("uintx LoopStripMiningIterShortLoop             = (\\d+)", 1));
46 
47         if (iter <= 0 || iterShort <= 0) {
48             throw new RuntimeException("Bad defaults for loop strip mining");
49         }
50     }
51 }
52