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Bug 1370412 - Part 7. ImageSurfaceCache::Lookup should enter factor of 2 mode on cache misses. r=tnikkel

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This commit is contained in:
Andrew Osmond 2017-09-05 07:58:45 -04:00
parent dedad4d54f
commit ee46542020
1 changed files with 13 additions and 3 deletions
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16
image/SurfaceCache.cpp
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@ -276,10 +276,19 @@ public:
return surface.forget();
}
already_AddRefed<CachedSurface> Lookup(const SurfaceKey& aSurfaceKey)
already_AddRefed<CachedSurface> Lookup(const SurfaceKey& aSurfaceKey,
bool aForAccess)
{
RefPtr<CachedSurface> surface;
mSurfaces.Get(aSurfaceKey, getter_AddRefs(surface));
// If no exact match is found, and this is for use rather than internal
// accounting (i.e. insert and removal), we know this will trigger a
// decode. Make sure we switch now to factor of 2 mode if necessary.
if (!surface && aForAccess && !mFactor2Mode) {
MaybeSetFactor2Mode();
}
return surface.forget();
}
@ -759,7 +768,7 @@ public:
return LookupResult(MatchType::NOT_FOUND);
}
RefPtr<CachedSurface> surface = cache->Lookup(aSurfaceKey);
RefPtr<CachedSurface> surface = cache->Lookup(aSurfaceKey, aMarkUsed);
if (!surface) {
// Lookup in the per-image cache missed.
return LookupResult(MatchType::NOT_FOUND);
@ -1099,7 +1108,8 @@ private:
return; // No cached surfaces for this image.
}
RefPtr<CachedSurface> surface = cache->Lookup(aSurfaceKey);
RefPtr<CachedSurface> surface =
cache->Lookup(aSurfaceKey, /* aForAccess = */ false);
if (!surface) {
return; // Lookup in the per-image cache missed.
}