8032229: [TEST_BUG] The app failed automatically and it threw exception:java.lang.UnsupportedOperationException.
Reviewed-by: serb, alexsch
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/* @test TestG1ZeroPGCTJcmdThreadPrint
* @key gc
* @bug 8005875
* @summary Use jcmd to generate a thread dump of a Java program being run with PGCT=0 to verify 8005875
* @library /testlibrary
* @run main/othervm -XX:+UseG1GC -XX:ParallelGCThreads=0 -XX:+IgnoreUnrecognizedVMOptions TestG1ZeroPGCTJcmdThreadPrint
*/
import com.oracle.java.testlibrary.*;
public class TestG1ZeroPGCTJcmdThreadPrint {
public static void main(String args[]) throws Exception {
// Grab the pid from the current java process
String pid = Integer.toString(ProcessTools.getProcessId());
// Create a ProcessBuilder
ProcessBuilder pb = new ProcessBuilder();
// Run jcmd <pid> Thread.print
pb.command(JDKToolFinder.getJDKTool("jcmd"), pid, "Thread.print");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
// There shouldn't be a work gang for concurrent marking.
output.shouldNotContain("G1 Parallel Marking Threads");
// Make sure we didn't crash
output.shouldHaveExitValue(0);
}
}