test/gc/metaspace/TestMetaspaceMemoryPool.java

rev 5230 : 8024718: Metaspace performance counters and memory pools should report the same data

*** 20,78 ****
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  import java.util.List;
! import java.lang.management.ManagementFactory;
! import java.lang.management.MemoryManagerMXBean;
! import java.lang.management.MemoryPoolMXBean;
! import java.lang.management.MemoryUsage;
! 
! import java.lang.management.RuntimeMXBean;
! import java.lang.management.ManagementFactory;
  
  /* @test TestMetaspaceMemoryPool
   * @bug 8000754
   * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a
   *          MemoryManagerMXBean is created.
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops TestMetaspaceMemoryPool
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:MaxMetaspaceSize=60m TestMetaspaceMemoryPool
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers TestMetaspaceMemoryPool
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:CompressedClassSpaceSize=60m TestMetaspaceMemoryPool
   */
  public class TestMetaspaceMemoryPool {
      public static void main(String[] args) {
          verifyThatMetaspaceMemoryManagerExists();
-         verifyMemoryPool(getMemoryPool("Metaspace"), isFlagDefined("MaxMetaspaceSize"));
  
!         if (runsOn64bit()) {
!             if (usesCompressedOops()) {
                  MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space");
                  verifyMemoryPool(cksPool, true);
              }
          }
      }
  
-     private static boolean runsOn64bit() {
-         return !System.getProperty("sun.arch.data.model").equals("32");
-     }
- 
-     private static boolean usesCompressedOops() {
-         return isFlagDefined("+UseCompressedOops");
-     }
- 
-     private static boolean isFlagDefined(String name) {
-         RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean();
-         List<String> args = runtimeMxBean.getInputArguments();
-         for (String arg : args) {
-             if (arg.startsWith("-XX:" + name)) {
-                 return true;
-             }
-         }
-         return false;
-     }
- 
      private static void verifyThatMetaspaceMemoryManagerExists() {
          List<MemoryManagerMXBean> managers = ManagementFactory.getMemoryManagerMXBeans();
          for (MemoryManagerMXBean manager : managers) {
              if (manager.getName().equals("Metaspace Manager")) {
                  return;
--- 20,58 ----
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  import java.util.List;
! import java.lang.management.*;
! import com.oracle.java.testlibrary.*;
! import static com.oracle.java.testlibrary.Asserts.*;
  
  /* @test TestMetaspaceMemoryPool
   * @bug 8000754
   * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a
   *          MemoryManagerMXBean is created.
+  * @library /testlibrary
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops TestMetaspaceMemoryPool
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:MaxMetaspaceSize=60m TestMetaspaceMemoryPool
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers TestMetaspaceMemoryPool
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:CompressedClassSpaceSize=60m TestMetaspaceMemoryPool
   */
  public class TestMetaspaceMemoryPool {
      public static void main(String[] args) {
          verifyThatMetaspaceMemoryManagerExists();
  
!         boolean isMetaspaceMaxDefined = InputArguments.contains("-XX:MaxMetaspaceSize");
!         verifyMemoryPool(getMemoryPool("Metaspace"), isMetaspaceMaxDefined);
! 
!         if (Platform.is64bit()) {
!             if (InputArguments.contains("-XX:+UseCompressedOops")) {
                  MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space");
                  verifyMemoryPool(cksPool, true);
              }
          }
      }
  
      private static void verifyThatMetaspaceMemoryManagerExists() {
          List<MemoryManagerMXBean> managers = ManagementFactory.getMemoryManagerMXBeans();
          for (MemoryManagerMXBean manager : managers) {
              if (manager.getName().equals("Metaspace Manager")) {
                  return;
*** 93,126 ****
          throw new RuntimeException("Expected to find a memory pool with name " + name);
      }
  
      private static void verifyMemoryPool(MemoryPoolMXBean pool, boolean isMaxDefined) {
          MemoryUsage mu = pool.getUsage();
!         assertDefined(mu.getInit(), "init");
!         assertDefined(mu.getUsed(), "used");
!         assertDefined(mu.getCommitted(), "committed");
  
          if (isMaxDefined) {
!             assertDefined(mu.getMax(), "max");
          } else {
!             assertUndefined(mu.getMax(), "max");
!         }
!     }
! 
!     private static void assertDefined(long value, String name) {
!         assertTrue(value != -1, "Expected " + name + " to be defined");
!     }
! 
!     private static void assertUndefined(long value, String name) {
!         assertEquals(value, -1, "Expected " + name + " to be undefined");
!     }
! 
!     private static void assertEquals(long actual, long expected, String msg) {
!         assertTrue(actual == expected, msg);
!     }
! 
!     private static void assertTrue(boolean condition, String msg) {
!         if (!condition) {
!             throw new RuntimeException(msg);
          }
      }
  }
--- 73,93 ----
          throw new RuntimeException("Expected to find a memory pool with name " + name);
      }
  
      private static void verifyMemoryPool(MemoryPoolMXBean pool, boolean isMaxDefined) {
          MemoryUsage mu = pool.getUsage();
!         long init = mu.getInit();
!         long used = mu.getUsed();
!         long committed = mu.getCommitted();
!         long max = mu.getMax();
! 
!         assertGTE(init, 0L);
!         assertGTE(used, init);
!         assertGTE(committed, used);
  
          if (isMaxDefined) {
!             assertGTE(max, committed);
          } else {
!             assertEQ(max, -1L);
          }
      }
  }