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8034775: Failing to initialize VM when running with negative value for -XX:CICompilerCount

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Ensure appropriate min. number of compiler threads (1 for non-tiered, and 2 for tiered)

Reviewed-by: kvn
This commit is contained in:
Albert Noll 2014-02-25 13:52:37 +01:00
parent e3931e81eb
commit a609fe84bb
2 changed files with 44 additions and 0 deletions
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4
hotspot/src/share/vm/runtime/arguments.cpp
View file

@ -2388,6 +2388,10 @@ bool Arguments::check_vm_args_consistency() {
status &= verify_interval(NmethodSweepFraction, 1, ReservedCodeCacheSize/K, "NmethodSweepFraction");
status &= verify_interval(NmethodSweepActivity, 0, 2000, "NmethodSweepActivity");
// TieredCompilation needs at least 2 compiler threads.
const int num_min_compiler_threads = (TieredCompilation) ? 2 : 1;
status &=verify_min_value(CICompilerCount, num_min_compiler_threads, "CICompilerCount");
return status;
}

40
hotspot/test/compiler/startup/NumCompilerThreadsCheck.java Normal file
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@ -0,0 +1,40 @@
/*
* 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 8034775
* @summary Ensures correct minimal number of compiler threads (provided by -XX:CICompilerCount=)
* @library /testlibrary
*/
import com.oracle.java.testlibrary.*;
public class NumCompilerThreadsCheck {
public static void main(String[] args) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:CICompilerCount=-1");
OutputAnalyzer out = new OutputAnalyzer(pb.start());
String expectedOutput = "CICompilerCount of -1 is invalid";
out.shouldContain(expectedOutput);
}
}