8202095: JFR TestBiasedLockRevocationEvents should cope with multiple events during a single safepoint
Reviewed-by: mgronlun, egahlin
/*
* Copyright (c) 2017, 2018, 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 applications.jcstress;
import jdk.test.lib.Utils;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Calendar;
import java.util.EnumSet;
import java.util.function.Predicate;
/**
* @notest THIS IS NOT A TEST.
* This is a test generator, should be run only when jcstress is changed
*
* @library /test/lib /
* @run main applications.jcstress.TestGenerator
*/
/**
* Use jcstress test suite to generate jtreg tests in 'test.src' or current
* directory. Used version is defined in JcstressRunner class.
*
* Each generated jtreg test file will contain several tests. Subdirectories are
* used to allow running all tests from a file using command line. 'copy',
* 'acqrel', 'fences', 'atomicity', 'seqcst.sync', 'seqcst.volatiles' and
* 'other' tests will be generated.
*
* This generator depends on testlibrary, therefore it should be compiled and
* added to classpath. One can replace @notest by @test in jtreg test
* description above to run this class with jtreg.
*
* @see <a href=https://wiki.openjdk.java.net/display/CodeTools/jcstress>jcstress</a>
*/
public class TestGenerator {
private static final String COPYRIGHT;
static {
String years;
final int firstYear = 2017;
int currentYear = Calendar.getInstance().get(Calendar.YEAR);
if (firstYear < currentYear) {
years = String.format("%d, %d", firstYear, currentYear);
} else {
years = "" + firstYear;
}
COPYRIGHT = String.format("/*\n" +
" * Copyright (c) %s, Oracle and/or its affiliates. All rights reserved.\n" +
" * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.\n" +
" *\n" +
" * This code is free software; you can redistribute it and/or modify it\n" +
" * under the terms of the GNU General Public License version 2 only, as\n" +
" * published by the Free Software Foundation.\n" +
" *\n" +
" * This code is distributed in the hope that it will be useful, but WITHOUT\n" +
" * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\n" +
" * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License\n" +
" * version 2 for more details (a copy is included in the LICENSE file that\n" +
" * accompanied this code).\n" +
" *\n" +
" * You should have received a copy of the GNU General Public License version\n" +
" * 2 along with this work; if not, write to the Free Software Foundation,\n" +
" * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.\n" +
" *\n" +
" * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA\n" +
" * or visit www.oracle.com if you need additional information or have any\n" +
" * questions.\n" +
" */\n\n", years);
}
private static enum JcstressGroup {
MEMEFFECTS("memeffects"),
COPY("copy"),
ACQREL("acqrel"),
FENCES("fences"),
ATOMICITY("atomicity"),
SEQCST_SYNC("seqcst.sync"),
SEQCST_VOLATILES("seqcst.volatiles"),
OTHER("other", JcstressGroup.otherFilter());
private final String groupName;
private final Predicate<String> filter;
private JcstressGroup(String groupName, Predicate<String> filter) {
this.groupName = groupName;
this.filter = filter;
}
private JcstressGroup(String groupName) {
this(groupName, JcstressGroup.nameFilter(groupName));
}
private static Predicate<String> nameFilter(String group) {
return s -> s.startsWith("org.openjdk.jcstress.tests." + group + ".");
}
private static Predicate<String> otherFilter() {
return (s) -> {
for (JcstressGroup g : EnumSet.complementOf(EnumSet.of(OTHER))) {
if (g.filter.test(s)) {
return false;
}
}
return true;
};
}
}
public static String DESC_FORMAT = "\n"
+ "/**\n"
+ " * @test %1$s\n"
+ " * @library /test/lib /\n"
+ " * @run driver/timeout=2400 " + JcstressRunner.class.getName()
// verbose output
+ " -v"
// test mode preset
+ " -m default"
// test name
+ " -t %1$s\n"
+ " */\n";
public static void main(String[] args) {
Path path = JcstressRunner.pathToArtifact();
Path output;
try {
output = Files.createTempFile("jcstress", ".out");
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-jar",
path.toAbsolutePath().toString(),
"-l");
pb.redirectOutput(output.toFile());
new OutputAnalyzer(pb.start()).shouldHaveExitValue(0);
} catch (Exception e) {
throw new Error("Can not get list of tests", e);
}
for (JcstressGroup group : JcstressGroup.values()) {
try {
try (BufferedReader reader = Files.newBufferedReader(output)) {
// skip first 4 lines: name, -{80}, revision and empty line
for (int i = 0; i < 4; ++i) {
reader.readLine();
}
new TestGenerator(group).generate(reader);
}
} catch (IOException e) {
throw new Error("Generating tests for " + group.name()
+ " has failed", e);
}
}
output.toFile().delete();
}
private final JcstressGroup group;
private TestGenerator(JcstressGroup group) {
this.group = group;
}
private void generate(BufferedReader reader) throws IOException {
// array is needed to change value inside a lambda
long[] count = {0L};
String root = Utils.TEST_SRC;
Path testFile = Paths.get(root)
.resolve(group.groupName)
.resolve("Test.java");
File testDir = testFile.getParent().toFile();
if (!testDir.mkdirs() && !testDir.exists()) {
throw new Error("Can not create directories for "
+ testFile.toString());
}
try (PrintStream ps = new PrintStream(testFile.toFile())) {
ps.print(COPYRIGHT);
ps.printf("/* DO NOT MODIFY THIS FILE. GENERATED BY %s */\n",
getClass().getName());
reader.lines()
.filter(group.filter)
.forEach(s -> {
count[0]++;
ps.printf(DESC_FORMAT, s);
});
ps.print('\n');
}
System.out.printf("%d tests generated in %s%n",
count[0], group.groupName);
}
}