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/*
* @test
* @key nmt jcmd
* @summary Verify that jcmd correctly reports that NMT is not enabled
* @library /testlibrary
* First run without enabling NMT
* @run main/othervm JcmdWithNMTDisabled
* Then run with explicitly disabling NMT, should not be any difference
* @run main/othervm -XX:NativeMemoryTracking=off JcmdWithNMTDisabled
*/
import com.oracle.java.testlibrary.*;
public class JcmdWithNMTDisabled {
static ProcessBuilder pb = new ProcessBuilder();
static String pid;
public static void main(String args[]) throws Exception {
// Grab my own PID
pid = Integer.toString(ProcessTools.getProcessId());
jcmdCommand("summary");
jcmdCommand("detail");
jcmdCommand("baseline");
jcmdCommand("summary.diff");
jcmdCommand("detail.diff");
jcmdCommand("scale=GB");
jcmdCommand("shutdown");
}
// Helper method for invoking different jcmd calls, all should fail with the same message saying NMT is not enabled
public static void jcmdCommand(String command) throws Exception {
pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", command});
OutputAnalyzer output = new OutputAnalyzer(pb.start());
// Verify that jcmd reports that NMT is not enabled
output.shouldContain("Native memory tracking is not enabled");
}
}