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/*
* Copyright (c) 2014, 2016, 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.
*/
package compiler.codecache.cli.codeheapsize;
import compiler.codecache.cli.common.CodeCacheCLITestCase;
import compiler.codecache.cli.common.CodeCacheOptions;
import jdk.test.lib.process.ExitCode;
import jdk.test.lib.Utils;
import jdk.test.lib.cli.CommandLineOptionTest;
import sun.hotspot.code.BlobType;
import java.util.Random;
/**
* Test case runner aimed to verify option's consistency.
*/
public class JVMStartupRunner implements CodeCacheCLITestCase.Runner {
private static final String INCONSISTENT_CH_SIZES_ERROR
= "Invalid code heap sizes.*";
@Override
public void run(CodeCacheCLITestCase.Description testCaseDescription,
CodeCacheOptions options) throws Throwable {
// Everything should be fine when
// sum(all code heap sizes) == reserved CC size
CommandLineOptionTest.verifySameJVMStartup(/* expected messages */ null,
new String[]{ INCONSISTENT_CH_SIZES_ERROR },
"JVM startup should not fail with consistent code heap sizes",
"JVM output should not contain warning about inconsistent code "
+ "heap sizes", ExitCode.OK, options.prepareOptions());
verifySingleInconsistentValue(options);
verifyAllInconsistentValues(options);
}
/**
* Verifies that if at least one of three options will have value, such
* that sum of all three values will be inconsistent, then JVM startup will
* fail.
*/
private static void verifySingleInconsistentValue(CodeCacheOptions options)
throws Throwable {
verifyHeapSizesSum(options.reserved,
scaleCodeHeapSize(options.profiled), options.nonProfiled,
options.nonNmethods);
verifyHeapSizesSum(options.reserved, options.profiled,
scaleCodeHeapSize(options.nonProfiled), options.nonNmethods);
verifyHeapSizesSum(options.reserved, options.profiled,
options.nonProfiled, scaleCodeHeapSize(options.nonNmethods));
}
/**
* Verifies that if all three options will have values such that their sum
* is inconsistent with ReservedCodeCacheSize value, then JVM startup will
* fail.
*/
private static void verifyAllInconsistentValues(CodeCacheOptions options)
throws Throwable {
long profiled = options.profiled;
long nonProfiled = options.nonProfiled;
long nonNMethods = options.nonNmethods;
while (options.reserved == profiled + nonProfiled + nonNMethods) {
profiled = scaleCodeHeapSize(profiled);
nonProfiled = scaleCodeHeapSize(nonProfiled);
nonNMethods = scaleCodeHeapSize(nonNMethods);
}
verifyHeapSizesSum(options.reserved, profiled, nonProfiled,
nonNMethods);
}
private static void verifyHeapSizesSum(long reserved, long profiled,
long nonProfiled, long nonNmethods) throws Throwable {
// JVM startup expected to fail when
// sum(all code heap sizes) != reserved CC size
CommandLineOptionTest.verifySameJVMStartup(
new String[]{ INCONSISTENT_CH_SIZES_ERROR },
/* unexpected messages */ null,
"JVM startup should fail with inconsistent code heap size.",
"JVM output should contain appropriate error message of code "
+ "heap sizes are inconsistent",
ExitCode.FAIL,
CommandLineOptionTest.prepareBooleanFlag(
CodeCacheOptions.SEGMENTED_CODE_CACHE, true),
CommandLineOptionTest.prepareNumericFlag(
BlobType.All.sizeOptionName, reserved),
CommandLineOptionTest.prepareNumericFlag(
BlobType.MethodProfiled.sizeOptionName, profiled),
CommandLineOptionTest.prepareNumericFlag(
BlobType.MethodNonProfiled.sizeOptionName, nonProfiled),
CommandLineOptionTest.prepareNumericFlag(
BlobType.NonNMethod.sizeOptionName, nonNmethods));
}
/**
* Returns {@code unscaledSize} value scaled by a random factor from
* range (1, 2). If {@code unscaledSize} is not 0, then this
* method will return value that won't be equal to {@code unscaledSize}.
*
* @param unscaledSize The value to be scaled.
* @return {@code unscaledSize} value scaled by a factor from range (1, 2).
*/
private static long scaleCodeHeapSize(long unscaledSize) {
Random random = Utils.getRandomInstance();
long scaledSize = unscaledSize;
while (scaledSize == unscaledSize && unscaledSize != 0) {
float scale = 1.0f + random.nextFloat();
scaledSize = (long) Math.ceil(scale * unscaledSize);
}
return scaledSize;
}
}
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