private void verifyRTMRetryCount(int retryCount) throws Throwable {
CompilableTest busyLock = new BusyLock();
long expectedAborts = retryCount + 1L;
OutputAnalyzer outputAnalyzer =
RTMTestBase.executeRTMTest(
busyLock,
"-XX:-UseRTMXendForLockBusy",
"-XX:RTMTotalCountIncrRate=1",
CommandLineOptionTest.prepareNumericFlag("RTMRetryCount", retryCount),
"-XX:RTMTotalCountIncrRate=1",
"-XX:+PrintPreciseRTMLockingStatistics",
BusyLock.class.getName(),
Boolean.toString(TestRTMRetryCount.INFLATE_MONITOR),
Integer.toString(TestRTMRetryCount.LOCKING_TIME));
outputAnalyzer.shouldHaveExitValue(0);
List<RTMLockingStatistics> statistics =
RTMLockingStatistics.fromString(
busyLock.getMethodWithLockName(), outputAnalyzer.getStdout());
Asserts.assertEQ(
statistics.size(),
1,
"VM output should contain "
+ "exactly one rtm locking statistics entry for method "
+ busyLock.getMethodWithLockName());
Asserts.assertEQ(
statistics.get(0).getTotalAborts(),
expectedAborts,
String.format("It is expected to get %d aborts", expectedAborts));
}
/**
* Used to log command line, stdout, stderr and exit code from an executed process.
*
* @param pb The executed process.
* @param output The output from the process.
*/
public static String getProcessLog(ProcessBuilder pb, OutputAnalyzer output) {
String stderr = output == null ? "null" : output.getStderr();
String stdout = output == null ? "null" : output.getStdout();
String exitValue = output == null ? "null" : Integer.toString(output.getExitValue());
StringBuilder logMsg = new StringBuilder();
final String nl = System.getProperty("line.separator");
logMsg.append("--- ProcessLog ---" + nl);
logMsg.append("cmd: " + getCommandLine(pb) + nl);
logMsg.append("exitvalue: " + exitValue + nl);
logMsg.append("stderr: " + stderr + nl);
logMsg.append("stdout: " + stdout + nl);
return logMsg.toString();
}
public static void main(String args[]) throws Exception {
if (!Platform.is64bit()) {
System.out.println(
"ReadFromNoaccessArea tests is useful only on 64bit architecture. Passing silently.");
return;
}
ProcessBuilder pb =
ProcessTools.createJavaProcessBuilder(
"-Xbootclasspath/a:.",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+WhiteBoxAPI",
"-XX:+UseCompressedOops",
"-XX:HeapBaseMinAddress=33G",
"-XX:-CreateCoredumpOnCrash",
"-Xmx32m",
DummyClassWithMainTryingToReadFromNoaccessArea.class.getName());
OutputAnalyzer output = new OutputAnalyzer(pb.start());
System.out.println("******* Printing stdout for analysis in case of failure *******");
System.out.println(output.getStdout());
System.out.println("******* Printing stderr for analysis in case of failure *******");
System.out.println(output.getStderr());
System.out.println("***************************************************************");
if (output.getStdout() != null
&& output.getStdout().contains("WB_ReadFromNoaccessArea method is useless")) {
// Test conditions broken. There is no protected page in ReservedHeapSpace in these
// circumstances. Silently passing test.
return;
}
if (Platform.isWindows()) {
output.shouldContain("EXCEPTION_ACCESS_VIOLATION");
} else if (Platform.isOSX()) {
output.shouldContain("SIGBUS");
} else {
output.shouldContain("SIGSEGV");
}
}