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• java
• j2se
• 1.6
• sun.management
• HotSpotDiagnostic

Methods

• HotSpotDiagnostictop

  public HotSpotDiagnostic()

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• dumpHeaptop

  public native void dumpHeap(String outputFile, boolean live) throws IOException
  Dumps the heap to the outputFile file in the same format as the hprof heap dump.

  If this method is called remotely from another process, the heap dump output is written to a file named outputFile on the machine where the target VM is running. If outputFile is a relative path, it is relative to the working directory where the target VM was started.

  Parameters:

  @param outputFile the system-dependent filename

  @param live if true dump only live objects i.e. objects that are reachable from others

  Specified by:

  dumpHeap from HotSpotDiagnosticMXBean

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• getDiagnosticOptionstop

  public List<VMOption> getDiagnosticOptions()
  Returns a list of VMOption objects for all diagnostic options. A diagnostic option is a writeable VM option that can be set dynamically mainly for troubleshooting and diagnosis.

  Return:

  @return a list of VMOption objects for all diagnostic options.

  Specified by:

  getDiagnosticOptions from HotSpotDiagnosticMXBean

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• getVMOptiontop

  public VMOption getVMOption(String name)
  Returns a VMOption object for a VM option of the given name.

  Return:

  @return a VMOption object for a VM option of the given name.

  Specified by:

  getVMOption from HotSpotDiagnosticMXBean

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• setVMOptiontop

  public void setVMOption(String name, String value)
  Sets a VM option of the given name to the specified value. The new value will be reflected in a new VMOption object returned by the com.sun.management.HotSpotDiagnosticMXBean.getVMOption(java.lang.String) method or the com.sun.management.HotSpotDiagnosticMXBean.getDiagnosticOptions() method. This method does not change the value of this VMOption object.

  Parameters:

  @param name Name of a VM option

  @param value New value of the VM option to be set

  Specified by:

  setVMOption from HotSpotDiagnosticMXBean

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