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// Copyright 2022 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "dawn/native/BlobCache.h"
#include <algorithm>
#include "dawn/common/Assert.h"
#include "dawn/common/Version_autogen.h"
#include "dawn/native/CacheKey.h"
#include "dawn/native/Instance.h"
#include "dawn/platform/DawnPlatform.h"
namespace dawn::native {
BlobCache::BlobCache(const dawn::native::DawnCacheDeviceDescriptor& desc)
: mLoadFunction(desc.loadDataFunction),
mStoreFunction(desc.storeDataFunction),
mFunctionUserdata(desc.functionUserdata) {}
Blob BlobCache::Load(const CacheKey& key) {
std::lock_guard<std::mutex> lock(mMutex);
return LoadInternal(key);
}
void BlobCache::Store(const CacheKey& key, size_t valueSize, const void* value) {
std::lock_guard<std::mutex> lock(mMutex);
StoreInternal(key, valueSize, value);
}
void BlobCache::Store(const CacheKey& key, const Blob& value) {
Store(key, value.Size(), value.Data());
}
Blob BlobCache::LoadInternal(const CacheKey& key) {
DAWN_ASSERT(ValidateCacheKey(key));
if (mLoadFunction == nullptr) {
return Blob();
}
const size_t expectedSize =
mLoadFunction(key.data(), key.size(), nullptr, 0, mFunctionUserdata);
if (expectedSize > 0) {
// Need to put this inside to trigger copy elision.
Blob result = CreateBlob(expectedSize);
const size_t actualSize =
mLoadFunction(key.data(), key.size(), result.Data(), expectedSize, mFunctionUserdata);
DAWN_ASSERT(expectedSize == actualSize);
return result;
}
return Blob();
}
void BlobCache::StoreInternal(const CacheKey& key, size_t valueSize, const void* value) {
DAWN_ASSERT(ValidateCacheKey(key));
DAWN_ASSERT(value != nullptr);
DAWN_ASSERT(valueSize > 0);
if (mStoreFunction == nullptr) {
return;
}
mStoreFunction(key.data(), key.size(), value, valueSize, mFunctionUserdata);
}
bool BlobCache::ValidateCacheKey(const CacheKey& key) {
return std::search(key.begin(), key.end(), kDawnVersion.begin(), kDawnVersion.end()) !=
key.end();
}
} // namespace dawn::native