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