publicstaticvoid testjstack() throws IOException {
launchJshell(); long jShellPID = jShellProcess.pid();
OutputAnalyzer jshellOutput = new OutputAnalyzer(jShellProcess);
try { // Do 4 jstacks on the jshell process as it starts up for (int i = 1; i <= 4; i++) {
JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jhsdb");
launcher.addVMArgs(Utils.getTestJavaOpts());
launcher.addToolArg("jstack");
launcher.addToolArg("--pid=" + Long.toString(jShellPID));
System.out.println("###### Starting jstack iteration " + i + " against " + jShellPID); long startTime = System.currentTimeMillis();
ProcessBuilder processBuilder = SATestUtils.createProcessBuilder(launcher);
OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
System.out.println("jhsdb jstack stdout:");
System.out.println(output.getStdout());
System.out.println("jhsdb jstack stderr:");
System.out.println(output.getStderr()); long elapsedTime = System.currentTimeMillis() - startTime;
System.out.println("###### End of all output for iteration " + i + " which took " + elapsedTime + "ms");
output.shouldHaveExitValue(0); // This will detect most SA failures, including during the attach.
output.shouldNotMatch("^sun.jvm.hotspot.debugger.DebuggerException:.*$"); // This will detect unexpected exceptions, like NPEs and asserts, that are caught // by sun.jvm.hotspot.tools.Tool.execute().
output.shouldNotMatch("^Error: .*$");
}
} catch (Exception ex) { thrownew RuntimeException("Test ERROR " + ex, ex);
} finally { try (OutputStream out = jShellProcess.getOutputStream()) {
out.write("/exit\n".getBytes());
out.flush();
} try {
jShellProcess.waitFor(); // jshell should exit quickly
} catch (InterruptedException e) {
}
System.out.println("jshell Output: " + jshellOutput.getOutput());
}
}
publicstaticvoid main(String[] args) throws Exception {
SATestUtils.skipIfCannotAttach(); // throws SkippedException if attach not expected to work.
testjstack();
// The test throws RuntimeException on error. // IOException is thrown if Jshell can't start because of some bad // environment condition
System.out.println("Test PASSED");
}
}
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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