1 // 2 // Copyright 2017 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 // MemoryProgramCache: Stores compiled and linked programs in memory so they don't 7 // always have to be re-compiled. Can be used in conjunction with the platform 8 // layer to warm up the cache from disk. 9 10 #ifndef LIBANGLE_MEMORY_PROGRAM_CACHE_H_ 11 #define LIBANGLE_MEMORY_PROGRAM_CACHE_H_ 12 13 #include <array> 14 15 #include "common/MemoryBuffer.h" 16 #include "libANGLE/BlobCache.h" 17 #include "libANGLE/Error.h" 18 19 namespace gl 20 { 21 class Context; 22 class Program; 23 class ProgramState; 24 25 class MemoryProgramCache final : angle::NonCopyable 26 { 27 public: 28 explicit MemoryProgramCache(egl::BlobCache &blobCache); 29 ~MemoryProgramCache(); 30 31 static void ComputeHash(const Context *context, 32 const Program *program, 33 egl::BlobCache::Key *hashOut); 34 35 // For querying the contents of the cache. 36 bool getAt(size_t index, 37 const egl::BlobCache::Key **hashOut, 38 egl::BlobCache::Value *programOut); 39 40 // Evict a program from the binary cache. 41 void remove(const egl::BlobCache::Key &programHash); 42 43 // Helper method that serializes a program. 44 angle::Result putProgram(const egl::BlobCache::Key &programHash, 45 const Context *context, 46 Program *program); 47 48 // Same as putProgram but computes the hash. 49 angle::Result updateProgram(const Context *context, Program *program); 50 51 // Store a binary directly. TODO(syoussefi): deprecated. Will be removed once Chrome supports 52 // EGL_ANDROID_blob_cache. http://anglebug.com/42261225 53 [[nodiscard]] bool putBinary(const egl::BlobCache::Key &programHash, 54 const uint8_t *binary, 55 size_t length); 56 57 // Check the cache, and deserialize and load the program if found. Evict existing hash if load 58 // fails. 59 angle::Result getProgram(const Context *context, 60 Program *program, 61 egl::BlobCache::Key *hashOut, 62 egl::CacheGetResult *resultOut); 63 64 // Empty the cache. 65 void clear(); 66 67 // Resize the cache. Discards current contents. 68 void resize(size_t maxCacheSizeBytes); 69 70 // Returns the number of entries in the cache. 71 size_t entryCount() const; 72 73 // Reduces the current cache size and returns the number of bytes freed. 74 size_t trim(size_t limit); 75 76 // Returns the current cache size in bytes. 77 size_t size() const; 78 79 // Returns the maximum cache size in bytes. 80 size_t maxSize() const; 81 82 private: 83 egl::BlobCache &mBlobCache; 84 }; 85 86 } // namespace gl 87 88 #endif // LIBANGLE_MEMORY_PROGRAM_CACHE_H_ 89