| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrGpuResourceCacheAccess_DEFINED |
| #define GrGpuResourceCacheAccess_DEFINED |
| |
| #include "src/gpu/ganesh/GrGpuResource.h" |
| #include "src/gpu/ganesh/GrGpuResourcePriv.h" |
| |
| namespace skiatest { |
| class Reporter; |
| } // namespace skiatest |
| |
| /** |
| * This class allows GrResourceCache increased privileged access to GrGpuResource objects. |
| */ |
| class GrGpuResource::CacheAccess { |
| private: |
| /** The cache is allowed to go from no refs to 1 ref. */ |
| void ref() { fResource->addInitialRef(); } |
| |
| /** |
| * Is the resource currently cached as scratch? This means it is cached, has a valid scratch |
| * key, and does not have a unique key. |
| */ |
| bool isScratch() const { |
| return !fResource->getUniqueKey().isValid() && fResource->fScratchKey.isValid() && |
| GrBudgetedType::kBudgeted == fResource->resourcePriv().budgetedType(); |
| } |
| |
| bool isUsableAsScratch() const { |
| return this->isScratch() && !fResource->internalHasRef(); |
| } |
| |
| /** |
| * Called by the cache to delete the resource under normal circumstances. |
| */ |
| void release() { |
| fResource->release(); |
| if (!fResource->hasRef() && fResource->hasNoCommandBufferUsages()) { |
| delete fResource; |
| } |
| } |
| |
| /** |
| * Called by the cache to delete the resource when the backend 3D context is no longer valid. |
| */ |
| void abandon() { |
| fResource->abandon(); |
| if (!fResource->hasRef() && fResource->hasNoCommandBufferUsages()) { |
| delete fResource; |
| } |
| } |
| |
| /** Called by the cache to assign a new unique key. */ |
| void setUniqueKey(const skgpu::UniqueKey& key) { fResource->fUniqueKey = key; } |
| |
| /** Is the resource ref'ed */ |
| bool hasRef() const { return fResource->hasRef(); } |
| bool hasRefOrCommandBufferUsage() const { |
| return this->hasRef() || !fResource->hasNoCommandBufferUsages(); |
| } |
| |
| /** Called by the cache to make the unique key invalid. */ |
| void removeUniqueKey() { fResource->fUniqueKey.reset(); } |
| |
| uint32_t timestamp() const { return fResource->fTimestamp; } |
| void setTimestamp(uint32_t ts) { fResource->fTimestamp = ts; } |
| |
| void setTimeWhenResourceBecomePurgeable() { |
| SkASSERT(fResource->isPurgeable()); |
| fResource->fTimeWhenBecamePurgeable = skgpu::StdSteadyClock::now(); |
| } |
| /** |
| * Called by the cache to determine whether this resource should be purged based on the length |
| * of time it has been available for purging. |
| */ |
| skgpu::StdSteadyClock::time_point timeWhenResourceBecamePurgeable() { |
| SkASSERT(fResource->isPurgeable()); |
| return fResource->fTimeWhenBecamePurgeable; |
| } |
| |
| int* accessCacheIndex() const { return &fResource->fCacheArrayIndex; } |
| |
| CacheAccess(GrGpuResource* resource) : fResource(resource) {} |
| CacheAccess(const CacheAccess& that) : fResource(that.fResource) {} |
| CacheAccess& operator=(const CacheAccess&) = delete; |
| |
| // No taking addresses of this type. |
| const CacheAccess* operator&() const = delete; |
| CacheAccess* operator&() = delete; |
| |
| GrGpuResource* fResource; |
| |
| friend class GrGpuResource; // to construct/copy this type. |
| friend class GrResourceCache; // to use this type |
| friend void test_unbudgeted_to_scratch(skiatest::Reporter* reporter); // for unit testing |
| }; |
| |
| inline GrGpuResource::CacheAccess GrGpuResource::cacheAccess() { return CacheAccess(this); } |
| |
| inline const GrGpuResource::CacheAccess GrGpuResource::cacheAccess() const { // NOLINT(readability-const-return-type) |
| return CacheAccess(const_cast<GrGpuResource*>(this)); |
| } |
| |
| #endif |