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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef MemoryCache_DEFINED
#define MemoryCache_DEFINED
#include <unordered_map>
#include "GrContextOptions.h"
#include "SkChecksum.h"
#include "SkData.h"
namespace sk_gpu_test {
/**
* This class can be used to maintain an in memory record of all programs cached by GrContext.
* It can be shared by multiple GrContexts so long as those GrContexts are created with the same
* options and will have the same GrCaps (e.g. same backend, same GL context creation parameters,
* ...).
*/
class MemoryCache : public GrContextOptions::PersistentCache {
public:
MemoryCache() = default;
MemoryCache(const MemoryCache&) = delete;
MemoryCache& operator=(const MemoryCache&) = delete;
sk_sp<SkData> load(const SkData& key) override;
void store(const SkData& key, const SkData& data) override;
int numCacheMisses() const { return fCacheMissCnt; }
void resetNumCacheMisses() { fCacheMissCnt = 0; }
private:
struct Key {
Key() = default;
Key(const SkData& key) : fKey(SkData::MakeWithCopy(key.data(), key.size())) {}
Key(const Key& that) = default;
Key& operator=(const Key&) = default;
bool operator==(const Key& that) const {
return that.fKey->size() == fKey->size() &&
!memcmp(fKey->data(), that.fKey->data(), that.fKey->size());
}
sk_sp<const SkData> fKey;
};
struct Hash {
using argument_type = Key;
using result_type = uint32_t;
uint32_t operator()(const Key& key) const {
return key.fKey ? SkOpts::hash_fn(key.fKey->data(), key.fKey->size(), 0) : 0;
}
};
int fCacheMissCnt = 0;
std::unordered_map<Key, sk_sp<SkData>, Hash> fMap;
};
} // namespace sk_gpu_test
#endif
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