8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  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
  26  * @key gc
  27  * @bug 8049831
  28  * @library /testlibrary /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  * @build TestG1ClassUnloadingHWM
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  33  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run driver TestG1ClassUnloadingHWM
  35  * @summary Test that -XX:-ClassUnloadingWithConcurrentMark will trigger a Full GC when more than MetaspaceSize metadata is allocated.
  36  */
  37 
  38 import jdk.test.lib.OutputAnalyzer;
  39 import jdk.test.lib.ProcessTools;
  40 import java.util.ArrayList;
  41 import java.util.Arrays;
  42 import sun.hotspot.WhiteBox;
  43 
  44 public class TestG1ClassUnloadingHWM {
  45   private static long MetaspaceSize = 32 * 1024 * 1024;
  46   private static long YoungGenSize  = 32 * 1024 * 1024;
  47 
  48   private static OutputAnalyzer run(boolean enableUnloading) throws Exception {
  49     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  50       "-Xbootclasspath/a:.",
  51       "-XX:+UnlockDiagnosticVMOptions",
  52       "-XX:+WhiteBoxAPI",
  53       "-XX:MetaspaceSize=" + MetaspaceSize,
  54       "-Xmn" + YoungGenSize,
  55       "-XX:+UseG1GC",
  56       "-XX:" + (enableUnloading ? "+" : "-") + "ClassUnloadingWithConcurrentMark",
  57       "-Xlog:gc",
  58       TestG1ClassUnloadingHWM.AllocateBeyondMetaspaceSize.class.getName(),
  59       "" + MetaspaceSize,

   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  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
  26  * @key gc
  27  * @bug 8049831
  28  * @library /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  * @build sun.hotspot.WhiteBox
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  33  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run driver TestG1ClassUnloadingHWM
  35  * @summary Test that -XX:-ClassUnloadingWithConcurrentMark will trigger a Full GC when more than MetaspaceSize metadata is allocated.
  36  */
  37 
  38 import jdk.test.lib.process.OutputAnalyzer;
  39 import jdk.test.lib.process.ProcessTools;
  40 import java.util.ArrayList;
  41 import java.util.Arrays;
  42 import sun.hotspot.WhiteBox;
  43 
  44 public class TestG1ClassUnloadingHWM {
  45   private static long MetaspaceSize = 32 * 1024 * 1024;
  46   private static long YoungGenSize  = 32 * 1024 * 1024;
  47 
  48   private static OutputAnalyzer run(boolean enableUnloading) throws Exception {
  49     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  50       "-Xbootclasspath/a:.",
  51       "-XX:+UnlockDiagnosticVMOptions",
  52       "-XX:+WhiteBoxAPI",
  53       "-XX:MetaspaceSize=" + MetaspaceSize,
  54       "-Xmn" + YoungGenSize,
  55       "-XX:+UseG1GC",
  56       "-XX:" + (enableUnloading ? "+" : "-") + "ClassUnloadingWithConcurrentMark",
  57       "-Xlog:gc",
  58       TestG1ClassUnloadingHWM.AllocateBeyondMetaspaceSize.class.getName(),
  59       "" + MetaspaceSize,