Reports multiple memory measurements using a callback function that gets called once for each measurement.
1.0
28
Introduced
Gecko 7.0
Inherits from:
nsISupports
Last changed in Gecko 12.0 (Firefox 12.0 / Thunderbird 12.0 / SeaMonkey 2.9)If you want to gather multiple measurements in a single operation (such as a single traversal of a large data structure), you can use a multi-reporter to do so. The callback, which must implement the nsIMemoryMultiReporterCallback interface, receives values that match the fields in the nsIMemoryReporter object.
In order for a multi-reporter to gather and generate reports, you need to call collectReports(). This will call the specified callback's nsIMemoryMultiReporterCallback.callback() method once for each report. This will trigger any needed computation work.
Note: This differs from the behavior of
nsIMemoryReporter, which lets all fields except amount be accessed without triggering computation.Attributes
| Attribute | Type | Description |
|---|---|---|
explicitNonHeap |
PRInt64 |
The sum of all of this multi-reporter's measurements that have a path that starts with "explicit" and are of the kind
Note: This is a hack that makes
nsIMemoryReporterManager.explicit more efficient. This is important; multi-reporters can special-case this operation so it's much faster than gathering all the reports, filtering out the unneeded ones, and adding up the rest. |
Method overview
void collectReports(in nsIMemoryMultiReporterCallback callback, in nsISupports closure); |
Methods
collectReports()
void collectReports( in nsIMemoryMultiReporterCallback callback, in nsISupports closure );
Parameters
-
callback -
The
nsIMemoryMultiReporterCallbackto call when collection is complete. -
closure -
An object containing any additional data your
callbackmight need; this gets passed to the callback. You can specifynullif your callback doesn't require any additional data.
See also
Document Tags and Contributors
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Sheppy,
nnethercote
Last updated by:
Sheppy,