org.eclipse.mat.snapshot.acquire

Interface IHeapDumpProvider

All Known Implementing Classes:

BaseProvider, IBMDumpProvider, IBMExecDumpProvider, IBMJavaDumpProvider, JMapHeapDumpProvider

public interface IHeapDumpProvider

Provides functionality to acquire a heap dump from a locally running Java process Implementations of this interface need to be registered using the org.eclipse.mat.api.heapDumpProvider extension point. Arguments can be injected into the query using public fields marked with the Argument annotation. Typical arguments to be supplied by the user of the heap dump provider include

• boolean flags
• int parm
• File file optionally tagged with tagged with Argument.Advice.DIRECTORY or Argument.Advice.SAVE.
• enum - an enum

The implementation can be tagged with the following annotations to control the description and help text.

• Name
• Help
• HelpUrl
• Usage

Since:

1.0

Method Summary

Modifier and Type	Method and Description
File	acquireDump(VmInfo info, File preferredLocation, IProgressListener listener) Acquire a heap dump from a locally running Java process.
List<? extends VmInfo>	getAvailableVMs(IProgressListener listener) Returns a list of locally running Java processes from which the heap dump provider can attempt to acquire a heap dump

Method Detail

getAvailableVMs

List<? extends VmInfo> getAvailableVMs(IProgressListener listener)
                                throws SnapshotException

Returns a list of locally running Java processes from which the heap dump provider can attempt to acquire a heap dump

Parameters:

listener - a progress listener

Returns:

A List of VMs, of a type which extends VmInfo.

Throws:

SnapshotException

acquireDump

File acquireDump(VmInfo info,
                 File preferredLocation,
                 IProgressListener listener)
          throws SnapshotException

Acquire a heap dump from a locally running Java process. The

Parameters:

info - a descriptor of the Java process which should be dumped

preferredLocation - a preferred filename under which the heap dump should be saved. The IHeapDumpProvider is not obliged to provide the heap dump at this location

listener - a progress listener

Returns:

the File under which the successfully generated heap dump is saved

Throws:

SnapshotException