11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test TestDynamicNumberOfGCThreads
  26  * @bug 8017462
  27  * @summary Ensure that UseDynamicNumberOfGCThreads runs
  28  * @requires vm.gc=="null"
  29  * @key gc
  30  * @modules java.base/jdk.internal.misc
  31  * @library /testlibrary
  32  */
  33 
  34 import jdk.test.lib.ProcessTools;
  35 import jdk.test.lib.OutputAnalyzer;
  36 
  37 public class TestDynamicNumberOfGCThreads {
  38   public static void main(String[] args) throws Exception {
  39 
  40     testDynamicNumberOfGCThreads("UseConcMarkSweepGC");
  41 
  42     testDynamicNumberOfGCThreads("UseG1GC");
  43 
  44     testDynamicNumberOfGCThreads("UseParallelGC");
  45   }
  46 
  47   private static void verifyDynamicNumberOfGCThreads(OutputAnalyzer output) {
  48     output.shouldHaveExitValue(0); // test should run succesfully
  49     output.shouldContain("new_active_workers");
  50   }
  51 
  52   private static void testDynamicNumberOfGCThreads(String gcFlag) throws Exception {
  53     // UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled
  54     String[] baseArgs = {"-XX:+" + gcFlag, "-Xmx10M", "-XX:+UseDynamicNumberOfGCThreads", "-Xlog:gc+task=trace", GCTest.class.getName()};
  55 

  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test TestDynamicNumberOfGCThreads
  26  * @bug 8017462
  27  * @summary Ensure that UseDynamicNumberOfGCThreads runs
  28  * @requires vm.gc=="null"
  29  * @key gc
  30  * @modules java.base/jdk.internal.misc
  31  * @library /test/lib
  32  */
  33 
  34 import jdk.test.lib.process.OutputAnalyzer;
  35 import jdk.test.lib.process.ProcessTools;
  36 
  37 public class TestDynamicNumberOfGCThreads {
  38   public static void main(String[] args) throws Exception {
  39 
  40     testDynamicNumberOfGCThreads("UseConcMarkSweepGC");
  41 
  42     testDynamicNumberOfGCThreads("UseG1GC");
  43 
  44     testDynamicNumberOfGCThreads("UseParallelGC");
  45   }
  46 
  47   private static void verifyDynamicNumberOfGCThreads(OutputAnalyzer output) {
  48     output.shouldHaveExitValue(0); // test should run succesfully
  49     output.shouldContain("new_active_workers");
  50   }
  51 
  52   private static void testDynamicNumberOfGCThreads(String gcFlag) throws Exception {
  53     // UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled
  54     String[] baseArgs = {"-XX:+" + gcFlag, "-Xmx10M", "-XX:+UseDynamicNumberOfGCThreads", "-Xlog:gc+task=trace", GCTest.class.getName()};
  55