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Bug 399107: Add API to force cycle collection. r/sr/a=jst

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This commit is contained in:
jonas@sicking.cc 2007-10-19 14:36:20 -07:00
parent d1d5b7afe6
commit a02704b46d
2 changed files with 29 additions and 1 deletions
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11
dom/public/idl/base/nsIDOMWindowUtils.idl
View File

@ -47,7 +47,7 @@
interface nsIDOMElement;
[scriptable, uuid(25f55fb2-a6f8-4f7f-93c3-3adafd5166bc)]
[scriptable, uuid(7a55fc2b-afb3-41c6-9e50-3fee341fa87c)]
interface nsIDOMWindowUtils : nsISupports {
/**
@ -156,4 +156,13 @@ interface nsIDOMWindowUtils : nsISupports {
* @param aElement the element to focus
*/
void focus(in nsIDOMElement aElement);
/**
* Force a garbage collection. This will run the cycle-collector twice to
* make sure all garbage is collected.
*
* Will throw a DOM security error if called without UniversalXPConnect
* privileges in non-debug builds. Available to all callers in debug builds.
*/
void garbageCollect();
};

19
dom/src/base/nsDOMWindowUtils.cpp
View File

@ -53,6 +53,7 @@
#include "nsIWidget.h"
#include "nsGUIEvent.h"
#include "nsIParser.h"
#include "nsCycleCollector.h"
#ifdef MOZ_ENABLE_GTK2
#include <gdk/gdkx.h>
@ -327,3 +328,21 @@ nsDOMWindowUtils::Focus(nsIDOMElement* aElement)
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GarbageCollect()
{
// NOTE: Only do this in NON debug builds, as this function can useful
// during debugging.
#ifndef DEBUG
PRBool hasCap = PR_FALSE;
if (NS_FAILED(nsContentUtils::GetSecurityManager()->
IsCapabilityEnabled("UniversalXPConnect", &hasCap))
|| !hasCap)
return NS_ERROR_DOM_SECURITY_ERR;
#endif
nsCycleCollector_collect();
nsCycleCollector_collect();
return NS_OK;
}