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ba70fac14d
Bug: dawn:549 Change-Id: I52d9321207d67b0214a52acc75456ee8d7943e8c Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/81943 Reviewed-by: Shrek Shao <shrekshao@google.com> Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Loko Kung <lokokung@google.com>
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
// Copyright 2019 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef DAWNNATIVE_CACHED_OBJECT_H_
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#define DAWNNATIVE_CACHED_OBJECT_H_
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#include "dawn/native/Forward.h"
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#include <cstddef>
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#include <string>
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namespace dawn::native {
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// Some objects are cached so that instead of creating new duplicate objects,
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// we increase the refcount of an existing object.
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// When an object is successfully created, the device should call
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// SetIsCachedReference() and insert the object into the cache.
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class CachedObject {
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public:
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bool IsCachedReference() const;
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// Functor necessary for the unordered_set<CachedObject*>-based cache.
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struct HashFunc {
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size_t operator()(const CachedObject* obj) const;
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};
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size_t GetContentHash() const;
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void SetContentHash(size_t contentHash);
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// Two versions of GetCacheKey, when passed a device, prepends the stored cache
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// key base with device and adapter information. When called without passing a
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// device, returns the stored cache key base. This is useful when the instance
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// is a member to a parent class.
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const std::string& GetCacheKey() const;
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std::string GetCacheKey(DeviceBase* device) const;
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void SetCacheKey(const std::string& cacheKey);
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private:
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friend class DeviceBase;
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void SetIsCachedReference();
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bool mIsCachedReference = false;
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// Called by ObjectContentHasher upon creation to record the object.
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virtual size_t ComputeContentHash() = 0;
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// Not all classes implement cache key computation, so by default we assert.
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virtual std::string ComputeCacheKeyBase() const;
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size_t mContentHash = 0;
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bool mIsContentHashInitialized = false;
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std::string mCacheKeyBase = "";
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bool mIsCacheKeyBaseInitialized = false;
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};
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} // namespace dawn::native
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#endif // DAWNNATIVE_CACHED_OBJECT_H_
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