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Bug 534433. Destroy all nsImageLoaders when the prescontext is torn down. r=mats

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This commit is contained in:
Robert O'Callahan 2010-01-14 15:30:05 +13:00
parent 4e9435de20
commit cd2f7f16fc
3 changed files with 14 additions and 12 deletions
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20
layout/base/nsPresContext.cpp
View File

@ -253,9 +253,6 @@ nsPresContext::nsPresContext(nsIDocument* aDocument, nsPresContextType aType)
nsPresContext::~nsPresContext()
{
for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i)
mImageLoaders[i].Enumerate(destroy_loads, nsnull);
NS_PRECONDITION(!mShell, "Presshell forgot to clear our mShell pointer");
SetShell(nsnull);
@ -374,11 +371,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsPresContext)
// NS_RELEASE(tmp->mLookAndFeel); // a service
// NS_RELEASE(tmp->mLangGroup); // an atom
for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i) {
tmp->mImageLoaders[i].Enumerate(destroy_loads, nsnull);
tmp->mImageLoaders[i].Clear();
}
// NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTheme); // a service
// NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mLangService); // a service
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mPrintSettings);
@ -992,6 +984,15 @@ nsPresContext::SetShell(nsIPresShell* aShell)
UpdateCharSet(doc->GetDocumentCharacterSet());
}
}
} else {
// Destroy image loaders now that the presshell is going away.
// This is important since imageloaders can have pointers to frames and
// we don't want those pointers to outlive the destruction of the frame
// arena.
for (PRUint32 i = 0; i < IMAGE_LOAD_TYPE_COUNT; ++i) {
mImageLoaders[i].Enumerate(destroy_loads, nsnull);
mImageLoaders[i].Clear();
}
}
}
@ -1278,6 +1279,9 @@ nsPresContext::SetImageLoaders(nsIFrame* aTargetFrame,
ImageLoadType aType,
nsImageLoader* aImageLoaders)
{
NS_ASSERTION(mShell || !aImageLoaders,
"Shouldn't add new image loader after the shell is gone");
nsRefPtr<nsImageLoader> oldLoaders;
mImageLoaders[aType].Get(aTargetFrame, getter_AddRefs(oldLoaders));

2
layout/base/nsPresShell.cpp
View File

@ -2748,6 +2748,8 @@ NS_IMETHODIMP
PresShell::NotifyDestroyingFrame(nsIFrame* aFrame)
{
if (!mIgnoreFrameDestruction) {
mPresContext->StopImagesFor(aFrame);
mFrameConstructor->NotifyDestroyingFrame(aFrame);
for (PRInt32 idx = mDirtyRoots.Length(); idx; ) {

4
layout/generic/nsFrame.cpp
View File

@ -451,10 +451,6 @@ nsFrame::DestroyFrom(nsIFrame* aDestructRoot)
shell->ClearFrameRefs(this);
}
//XXX Why is this done in nsFrame instead of some frame class
// that actually loads images?
presContext->StopImagesFor(this);
if (view) {
// Break association between view and frame
view->SetClientData(nsnull);