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//
// Copyright 2017-2018 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// MemoryProgramCache: Stores compiled and linked programs in memory so they don't
// always have to be re-compiled. Can be used in conjunction with the platform
// layer to warm up the cache from disk.
#ifndef LIBANGLE_MEMORY_PROGRAM_CACHE_H_
#define LIBANGLE_MEMORY_PROGRAM_CACHE_H_
#include <array>
#include "common/MemoryBuffer.h"
#include "libANGLE/BlobCache.h"
#include "libANGLE/Error.h"
namespace gl
{
class Context;
class Program;
class ProgramState;
class MemoryProgramCache final : angle::NonCopyable
{
public:
explicit MemoryProgramCache(egl::BlobCache &blobCache);
~MemoryProgramCache();
static void ComputeHash(const Context *context,
const Program *program,
egl::BlobCache::Key *hashOut);
// Check if the cache contains a binary matching the specified program.
bool get(const Context *context,
const egl::BlobCache::Key &programHash,
egl::BlobCache::Value *programOut);
// For querying the contents of the cache.
bool getAt(size_t index,
const egl::BlobCache::Key **hashOut,
egl::BlobCache::Value *programOut);
// Evict a program from the binary cache.
void remove(const egl::BlobCache::Key &programHash);
// Helper method that serializes a program.
void putProgram(const egl::BlobCache::Key &programHash,
const Context *context,
const Program *program);
// Same as putProgram but computes the hash.
void updateProgram(const Context *context, const Program *program);
// Store a binary directly. TODO(syoussefi): deprecated. Will be removed once Chrome supports
// EGL_ANDROID_blob_cache. http://anglebug.com/2516
void putBinary(const egl::BlobCache::Key &programHash, const uint8_t *binary, size_t length);
// Check the cache, and deserialize and load the program if found. Evict existing hash if load
// fails.
angle::Result getProgram(const Context *context,
Program *program,
egl::BlobCache::Key *hashOut);
// Empty the cache.
void clear();
// Resize the cache. Discards current contents.
void resize(size_t maxCacheSizeBytes);
// Returns the number of entries in the cache.
size_t entryCount() const;
// Reduces the current cache size and returns the number of bytes freed.
size_t trim(size_t limit);
// Returns the current cache size in bytes.
size_t size() const;
// Returns the maximum cache size in bytes.
size_t maxSize() const;
private:
egl::BlobCache &mBlobCache;
unsigned int mIssuedWarnings;
};
} // namespace gl
#endif // LIBANGLE_MEMORY_PROGRAM_CACHE_H_
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