| /* |
| * 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 "GrGpuResource.h" |
| #include "GrGpuResourcePriv.h" |
| |
| namespace skiatest { |
| class Reporter; |
| } |
| |
| /** |
| * This class allows GrResourceCache increased privileged access to GrGpuResource objects. |
| */ |
| class GrGpuResource::CacheAccess { |
| private: |
| /** |
| * 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() && |
| SkBudgeted::kYes == fResource->resourcePriv().isBudgeted(); |
| } |
| |
| /** |
| * Called by the cache to delete the resource under normal circumstances. |
| */ |
| void release() { |
| fResource->release(); |
| if (fResource->isPurgeable()) { |
| 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| * Called by the cache to delete the resource when the backend 3D context is no longer valid.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->isPurgeable()) { |
| delete fResource; |
| } |
| } |
| |
| /** Called by the cache to assign a new unique key. */ |
| void setUniqueKey(const GrUniqueKey& key) { fResource->fUniqueKey = key; } |
| |
| /** 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; } |
| |
| /** Called by the cache to record when this became purgeable. */ |
| void setFlushCntWhenResourceBecamePurgeable(uint32_t cnt) { |
| SkASSERT(fResource->isPurgeable()); |
| fResource->fExternalFlushCntWhenBecamePurgeable = cnt; |
| } |
| void setTimeWhenResourceBecomePurgeable() { |
| SkASSERT(fResource->isPurgeable()); |
| fResource->fTimeWhenBecamePurgeable = std::chrono::steady_clock::now(); |
| } |
| /** |
| * Called by the cache to determine whether this resource has been puregable for more than |
| * a threshold number of external flushes. |
| */ |
| uint32_t flushCntWhenResourceBecamePurgeable() { |
| SkASSERT(fResource->isPurgeable()); |
| return fResource->fExternalFlushCntWhenBecamePurgeable; |
| } |
| /** |
| * Called by the cache to determine whether this resource should be purged based on the length |
| * of time it has been available for purging. |
| */ |
| std::chrono::steady_clock::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&); // unimpl |
| |
| // No taking addresses of this type. |
| const CacheAccess* operator&() const; |
| CacheAccess* operator&(); |
| |
| 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 { |
| return CacheAccess(const_cast<GrGpuResource*>(this)); |
| } |
| |
| #endif |