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cf820d79ef
Per https://github.com/webgpu-native/webgpu-headers/pull/71 Keeps but deprecates WGPU_STRIDE_UNDEFINED/wgpu::kStrideUndefined. Bug: dawn:520 Change-Id: Ied162ec39454fac3d16a3782c9ed6d2f68c1d41d Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/34926 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Auto-Submit: Kai Ninomiya <kainino@chromium.org>
87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
// Copyright 2020 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_PERSISTENTCACHE_H_
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#define DAWNNATIVE_PERSISTENTCACHE_H_
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#include "dawn_native/Error.h"
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#include <vector>
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namespace dawn_platform {
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class CachingInterface;
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}
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namespace dawn_native {
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using PersistentCacheKey = std::vector<uint8_t>;
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struct ScopedCachedBlob {
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std::unique_ptr<uint8_t[]> buffer;
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size_t bufferSize = 0;
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};
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class DeviceBase;
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enum class PersistentKeyType { Shader };
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class PersistentCache {
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public:
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PersistentCache(DeviceBase* device);
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// Combines load/store operations into a single call.
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// If the load was successful, a non-empty blob is returned to the caller.
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// Else, the creation callback |createFn| gets invoked with a callback
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// |doCache| to store the newly created blob back in the cache.
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//
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// Example usage:
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//
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// ScopedCachedBlob cachedBlob = {};
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// DAWN_TRY_ASSIGN(cachedBlob, GetOrCreate(key, [&](auto doCache)) {
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// // Create a new blob to be stored
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// doCache(newBlobPtr, newBlobSize); // store
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// }));
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//
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template <typename CreateFn>
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ResultOrError<ScopedCachedBlob> GetOrCreate(const PersistentCacheKey& key,
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CreateFn&& createFn) {
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// Attempt to load an existing blob from the cache.
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ScopedCachedBlob blob = LoadData(key);
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if (blob.bufferSize > 0) {
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return std::move(blob);
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}
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// Allow the caller to create a new blob to be stored for the given key.
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DAWN_TRY(createFn([this, key](const void* value, size_t size) {
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this->StoreData(key, value, size);
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}));
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return std::move(blob);
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}
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private:
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// PersistentCache impl
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ScopedCachedBlob LoadData(const PersistentCacheKey& key);
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void StoreData(const PersistentCacheKey& key, const void* value, size_t size);
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dawn_platform::CachingInterface* GetPlatformCache();
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DeviceBase* mDevice = nullptr;
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dawn_platform::CachingInterface* mCache = nullptr;
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_PERSISTENTCACHE_H_
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