test/com/sun/management/HotSpotDiagnosticMXBean/SetVMOption.java

*** 28,85 ****
   *          and getDiagnosticOptions().
   * @author  Mandy Chung
   * @author  Jaroslav Bachorik
   *
   * @modules jdk.management
!  * @run main/othervm -XX:+PrintGCDetails SetVMOption
   */
  
  import java.lang.management.ManagementFactory;
  import java.util.*;
  import com.sun.management.HotSpotDiagnosticMXBean;
  import com.sun.management.VMOption;
  import com.sun.management.VMOption.Origin;
  
  public class SetVMOption {
!     private static final String PRINT_GC_DETAILS = "PrintGCDetails";
      private static final String EXPECTED_VALUE = "true";
      private static final String BAD_VALUE = "yes";
      private static final String NEW_VALUE = "false";
      private static final String MANAGEMENT_SERVER = "ManagementServer";
      private static HotSpotDiagnosticMXBean mbean;
  
      public static void main(String[] args) throws Exception {
          mbean =
              ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
  
!         VMOption option = findPrintGCDetailsOption();
          if (!option.getValue().equalsIgnoreCase(EXPECTED_VALUE)) {
              throw new RuntimeException("Unexpected value: " +
                  option.getValue() + " expected: " + EXPECTED_VALUE);
          }
          if (option.getOrigin() != Origin.VM_CREATION) {
              throw new RuntimeException("Unexpected origin: " +
                  option.getOrigin() + " expected: VM_CREATION");
          }
          if (!option.isWriteable()) {
!             throw new RuntimeException("Expected " + PRINT_GC_DETAILS +
                  " to be writeable");
          }
  
          // set VM option to a new value
!         mbean.setVMOption(PRINT_GC_DETAILS, NEW_VALUE);
  
!         option = findPrintGCDetailsOption();
          if (!option.getValue().equalsIgnoreCase(NEW_VALUE)) {
              throw new RuntimeException("Unexpected value: " +
                  option.getValue() + " expected: " + NEW_VALUE);
          }
          if (option.getOrigin() != Origin.MANAGEMENT) {
              throw new RuntimeException("Unexpected origin: " +
                  option.getOrigin() + " expected: MANAGEMENT");
          }
!         VMOption o = mbean.getVMOption(PRINT_GC_DETAILS);
          if (!option.getValue().equals(o.getValue())) {
              throw new RuntimeException("Unmatched value: " +
                  option.getValue() + " expected: " + o.getValue());
          }
          if (!option.getValue().equals(o.getValue())) {
--- 28,85 ----
   *          and getDiagnosticOptions().
   * @author  Mandy Chung
   * @author  Jaroslav Bachorik
   *
   * @modules jdk.management
!  * @run main/othervm -XX:+HeapDumpOnOutOfMemoryError SetVMOption
   */
  
  import java.lang.management.ManagementFactory;
  import java.util.*;
  import com.sun.management.HotSpotDiagnosticMXBean;
  import com.sun.management.VMOption;
  import com.sun.management.VMOption.Origin;
  
  public class SetVMOption {
!     private static final String HEAP_DUMP_ON_OOM = "HeapDumpOnOutOfMemoryError";
      private static final String EXPECTED_VALUE = "true";
      private static final String BAD_VALUE = "yes";
      private static final String NEW_VALUE = "false";
      private static final String MANAGEMENT_SERVER = "ManagementServer";
      private static HotSpotDiagnosticMXBean mbean;
  
      public static void main(String[] args) throws Exception {
          mbean =
              ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
  
!         VMOption option = findHeapDumpOnOomOption();
          if (!option.getValue().equalsIgnoreCase(EXPECTED_VALUE)) {
              throw new RuntimeException("Unexpected value: " +
                  option.getValue() + " expected: " + EXPECTED_VALUE);
          }
          if (option.getOrigin() != Origin.VM_CREATION) {
              throw new RuntimeException("Unexpected origin: " +
                  option.getOrigin() + " expected: VM_CREATION");
          }
          if (!option.isWriteable()) {
!             throw new RuntimeException("Expected " + HEAP_DUMP_ON_OOM +
                  " to be writeable");
          }
  
          // set VM option to a new value
!         mbean.setVMOption(HEAP_DUMP_ON_OOM, NEW_VALUE);
  
!         option = findHeapDumpOnOomOption();
          if (!option.getValue().equalsIgnoreCase(NEW_VALUE)) {
              throw new RuntimeException("Unexpected value: " +
                  option.getValue() + " expected: " + NEW_VALUE);
          }
          if (option.getOrigin() != Origin.MANAGEMENT) {
              throw new RuntimeException("Unexpected origin: " +
                  option.getOrigin() + " expected: MANAGEMENT");
          }
!         VMOption o = mbean.getVMOption(HEAP_DUMP_ON_OOM);
          if (!option.getValue().equals(o.getValue())) {
              throw new RuntimeException("Unmatched value: " +
                  option.getValue() + " expected: " + o.getValue());
          }
          if (!option.getValue().equals(o.getValue())) {
*** 121,141 ****
              throw new RuntimeException(MANAGEMENT_SERVER +
                  " is not expected to be writeable");
          }
      }
  
!     public static VMOption findPrintGCDetailsOption() {
          List<VMOption> options = mbean.getDiagnosticOptions();
          VMOption gcDetails = null;
          for (VMOption o : options) {
!             if (o.getName().equals(PRINT_GC_DETAILS)) {
                   gcDetails = o;
                   break;
              }
          }
          if (gcDetails == null) {
!             throw new RuntimeException("VM option " + PRINT_GC_DETAILS +
                  " not found");
          }
          return gcDetails;
      }
  }
--- 121,141 ----
              throw new RuntimeException(MANAGEMENT_SERVER +
                  " is not expected to be writeable");
          }
      }
  
!     public static VMOption findHeapDumpOnOomOption() {
          List<VMOption> options = mbean.getDiagnosticOptions();
          VMOption gcDetails = null;
          for (VMOption o : options) {
!             if (o.getName().equals(HEAP_DUMP_ON_OOM)) {
                   gcDetails = o;
                   break;
              }
          }
          if (gcDetails == null) {
!             throw new RuntimeException("VM option " + HEAP_DUMP_ON_OOM +
                  " not found");
          }
          return gcDetails;
      }
  }