nsIMemoryReporterManager 编辑

xpcom/base/nsIMemoryReporter.idlScriptable A service that provides methods for managing nsIMemoryReporter objects. Inherits from: nsISupports Last changed in Gecko 1.9 (Firefox 3)

Implemented by @mozilla.org/memory-reporter-manager;1 as a service:

var reporterManager = Components.classes["@mozilla.org/memory-reporter-manager;1"]
                      .getService(Components.interfaces.nsIMemoryReporterManager);

Each memory reporter object, which implements nsiMemoryReporter interface, provides information for a given code area. Each code area is identified by a unique path string, which is displayed in about:memory.

Method overview

nsISimpleEnumerator enumerateMultiReporters();

nsISimpleEnumerator enumerateReporters();

void init();

void registerMultiReporter(in nsIMemoryMultiReporter reporter);

void registerReporter(in nsIMemoryReporter reporter);

void unregisterMultiReporter(in nsIMemoryMultiReporter reporter);

void unregisterReporter(in nsIMemoryReporter reporter);

Attributes

Attribute	Type	Description
explicit	PRInt64	Gets the total size of explicit memory allocations, both at the operating system level (for example, via mmap, VirtualAlloc) and at the heap level (for example, via malloc(), calloc(), operator new). Note: It covers all heap allocations, but will miss any Operating System level ones not covered by memory reporters. This reporter is special-cased because it is interesting, and is moderately difficult to compute in JavaScript. -1 means unknown. Read only.
resident	PRInt64	Gets the resident size (that is RSS, physical memory used). This reporter is special-cased because it is interesting, is available on all platforms, and returns a meaningful result on all common platforms. -1 means unknown. Read only.

Methods

enumerateMultiReporters()

Returns an enumerator for looking at the installed memory multi-reporters.

nsISimpleEnumerator enumerateMultiReporters();

Parameters

None.

Return value

An enumerator of nsIMemoryMultiReporters that are currently registered.

enumerateReporters()

Returns an enumerator for looking at the installed memory reporters.

nsISimpleEnumerator enumerateReporters();

Parameters

None.

Return value

An nsISimpleEnumerator for enumerating installed memory reporters.

init()

Initializes the memory reporter manager.

void init();

Parameters

None.

registerMultiReporter()

Requests that memory multi-reporter notifications be sent to the specified objects.

void registerMultiReporter(
  in nsIMemoryMultiReporter reporter
);

Parameters

reporter

An object implementing the nsIMemoryMultiReporter interface which provides memory usage information for a given code area.

registerReporter()

Requests that memory reporter notifications be sent to the specified objects.

void registerReporter(
  in nsIMemoryReporter reporter
);

Parameters

reporter

An object implementing the nsIMemoryReporter interface which provides memory usage information for a given code area.

unregisterMultiReporter()

Stops sending memory multi-reporter notifications to the specified object.

void unregisterMultiReporter(
  in nsIMemoryMultiReporter reporter
);

Parameters

reporter

An object implementing the nsIMemoryMultiReporter interface which provides memory usage information for a given code area.

unregisterReporter()

Stops sending memory reporter notifications to the specified object.

void unregisterReporter(
  in nsIMemoryReporter reporter
);

Parameters

reporter

An object implementing the nsIMemoryReporter interface which provides memory usage information for a given code area.

See also

• nsIMemoryMultiReporter
• nsIMemoryReporter