Package org.eclipse.mat.snapshot.model

Interface GCRootInfo.Type

Enclosing class:
GCRootInfo
public static interface GCRootInfo.Type
Reasons why an heap object is a garbage collection root.
No Implement:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    BUSY_MONITOR
    Everything you have called wait() or notify() on or you have synchronized on
    static final int
    FINALIZABLE
    An object which is a queue awaiting its finalizer to be run
    static final int
    JAVA_LOCAL
    Local variable, i.e.
    static final int
    JAVA_STACK_FRAME
    A Java stack frame containing references to Java locals
    static final int
    NATIVE_LOCAL
    Local variable in native code
    static final int
    NATIVE_STACK
    In or out parameters in native code; frequently seen as some methods have native parts and the objects handled as method parameters become GC roots, e.g.
    static final int
    NATIVE_STATIC
    Global variable in native code
    static final int
    SYSTEM_CLASS
    Class loaded by system class loader, e.g.
    static final int
    THREAD_BLOCK
    Started but not stopped threads
    static final int
    THREAD_OBJ
    Running or blocked Java threads
    static final int
    UNFINALIZED
    An object which has a finalize method, but has not been finalized and is not yet on the finalizer queue
    static final int
    UNKNOWN
    GC root of unknown type, or a type not matching any of the other declared types
    static final int
    UNREACHABLE
    An object which is unreachable from any other root, but has been marked as a root by MAT to retain objects which otherwise would not be included in the analysis

  • Field Details

    • UNKNOWN

      static final int UNKNOWN
      GC root of unknown type, or a type not matching any of the other declared types
      See Also:

    • SYSTEM_CLASS

      static final int SYSTEM_CLASS
      Class loaded by system class loader, e.g. java.lang.String
      See Also:

    • NATIVE_LOCAL

      static final int NATIVE_LOCAL
      Local variable in native code
      See Also:

    • NATIVE_STATIC

      static final int NATIVE_STATIC
      Global variable in native code
      See Also:

    • THREAD_BLOCK

      static final int THREAD_BLOCK
      Started but not stopped threads
      See Also:

    • BUSY_MONITOR

      static final int BUSY_MONITOR
      Everything you have called wait() or notify() on or you have synchronized on
      See Also:

    • JAVA_LOCAL

      static final int JAVA_LOCAL
      Local variable, i.e. method input parameters or locally created objects of methods still on the stack of a thread
      See Also:

    • NATIVE_STACK

      static final int NATIVE_STACK
      In or out parameters in native code; frequently seen as some methods have native parts and the objects handled as method parameters become GC roots, e.g. parameters used for file/network I/O methods or reflection
      See Also:

    • THREAD_OBJ

      static final int THREAD_OBJ
      Running or blocked Java threads
      See Also:

    • FINALIZABLE

      static final int FINALIZABLE
      An object which is a queue awaiting its finalizer to be run
      See Also:

    • UNFINALIZED

      static final int UNFINALIZED
      An object which has a finalize method, but has not been finalized and is not yet on the finalizer queue
      See Also:

    • UNREACHABLE

      static final int UNREACHABLE
      An object which is unreachable from any other root, but has been marked as a root by MAT to retain objects which otherwise would not be included in the analysis
      Since:
      1.0
      See Also:

    • JAVA_STACK_FRAME

      static final int JAVA_STACK_FRAME
      A Java stack frame containing references to Java locals
      Since:
      1.0
      See Also: