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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrResourceCache2.h"
#include "GrGpuResource.h"
#include "SkRefCnt.h"
GrResourceCache2::~GrResourceCache2() {
this->releaseAll();
}
void GrResourceCache2::insertResource(GrGpuResource* resource) {
SkASSERT(resource);
SkASSERT(!resource->wasDestroyed());
SkASSERT(!this->isInCache(resource));
fResources.addToHead(resource);
++fCount;
if (!resource->getScratchKey().isNullScratch()) {
fScratchMap.insert(resource->getScratchKey(), resource);
}
}
void GrResourceCache2::removeResource(GrGpuResource* resource) {
SkASSERT(this->isInCache(resource));
fResources.remove(resource);
if (!resource->getScratchKey().isNullScratch()) {
fScratchMap.remove(resource->getScratchKey(), resource);
}
--fCount;
}
void GrResourceCache2::abandonAll() {
while (GrGpuResource* head = fResources.head()) {
SkASSERT(!head->wasDestroyed());
head->abandon();
// abandon should have already removed this from the list.
SkASSERT(head != fResources.head());
}
SkASSERT(!fScratchMap.count());
SkASSERT(!fCount);
}
void GrResourceCache2::releaseAll() {
while (GrGpuResource* head = fResources.head()) {
SkASSERT(!head->wasDestroyed());
head->release();
// release should have already removed this from the list.
SkASSERT(head != fResources.head());
}
SkASSERT(!fScratchMap.count());
SkASSERT(!fCount);
}
class GrResourceCache2::AvailableForScratchUse {
public:
AvailableForScratchUse(bool calledDuringFlush) : fFlushing(calledDuringFlush) { }
bool operator()(const GrGpuResource* resource) const {
if (fFlushing) {
// If this request is coming during draw buffer flush then no refs are allowed
// either by drawing code or for pending io operations.
// This will be removed when flush no longer creates resources.
return resource->reffedOnlyByCache() && !resource->internalHasPendingIO() &&
GrGpuResource::kYes_IsScratch == resource->fIsScratch;
} else {
// Because duties are currently shared between GrResourceCache and GrResourceCache2, the
// current interpretation of this rule is that only GrResourceCache has a ref but that
// it has been marked as a scratch resource.
return resource->reffedOnlyByCache() &&
GrGpuResource::kYes_IsScratch == resource->fIsScratch;
}
}
private:
bool fFlushing;
};
GrGpuResource* GrResourceCache2::findAndRefScratchResource(const GrResourceKey& scratchKey,
bool calledDuringFlush) {
SkASSERT(scratchKey.isScratch());
return SkSafeRef(fScratchMap.find(scratchKey, AvailableForScratchUse(calledDuringFlush)));
}
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