| // Copyright 2017 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef SRC_DAWN_COMMON_SERIALQUEUE_H_ |
| #define SRC_DAWN_COMMON_SERIALQUEUE_H_ |
| |
| #include <utility> |
| #include <vector> |
| |
| #include "dawn/common/SerialStorage.h" |
| |
| template <typename Serial, typename Value> |
| class SerialQueue; |
| |
| template <typename SerialT, typename ValueT> |
| struct SerialStorageTraits<SerialQueue<SerialT, ValueT>> { |
| using Serial = SerialT; |
| using Value = ValueT; |
| using SerialPair = std::pair<Serial, std::vector<Value>>; |
| using Storage = std::vector<SerialPair>; |
| using StorageIterator = typename Storage::iterator; |
| using ConstStorageIterator = typename Storage::const_iterator; |
| }; |
| |
| // SerialQueue stores an associative list mapping a Serial to Value. |
| // It enforces that the Serials enqueued are strictly non-decreasing. |
| // This makes it very efficient iterate or clear all items added up |
| // to some Serial value because they are stored contiguously in memory. |
| template <typename Serial, typename Value> |
| class SerialQueue : public SerialStorage<SerialQueue<Serial, Value>> { |
| public: |
| // The serial must be given in (not strictly) increasing order. |
| void Enqueue(const Value& value, Serial serial); |
| void Enqueue(Value&& value, Serial serial); |
| void Enqueue(const std::vector<Value>& values, Serial serial); |
| void Enqueue(std::vector<Value>&& values, Serial serial); |
| }; |
| |
| // SerialQueue |
| |
| template <typename Serial, typename Value> |
| void SerialQueue<Serial, Value>::Enqueue(const Value& value, Serial serial) { |
| DAWN_ASSERT(this->Empty() || this->mStorage.back().first <= serial); |
| |
| if (this->Empty() || this->mStorage.back().first < serial) { |
| this->mStorage.emplace_back(serial, std::vector<Value>{}); |
| } |
| this->mStorage.back().second.push_back(value); |
| } |
| |
| template <typename Serial, typename Value> |
| void SerialQueue<Serial, Value>::Enqueue(Value&& value, Serial serial) { |
| DAWN_ASSERT(this->Empty() || this->mStorage.back().first <= serial); |
| |
| if (this->Empty() || this->mStorage.back().first < serial) { |
| this->mStorage.emplace_back(serial, std::vector<Value>{}); |
| } |
| this->mStorage.back().second.push_back(std::move(value)); |
| } |
| |
| template <typename Serial, typename Value> |
| void SerialQueue<Serial, Value>::Enqueue(const std::vector<Value>& values, Serial serial) { |
| DAWN_ASSERT(values.size() > 0); |
| DAWN_ASSERT(this->Empty() || this->mStorage.back().first <= serial); |
| this->mStorage.emplace_back(serial, values); |
| } |
| |
| template <typename Serial, typename Value> |
| void SerialQueue<Serial, Value>::Enqueue(std::vector<Value>&& values, Serial serial) { |
| DAWN_ASSERT(values.size() > 0); |
| DAWN_ASSERT(this->Empty() || this->mStorage.back().first <= serial); |
| this->mStorage.emplace_back(serial, values); |
| } |
| |
| #endif // SRC_DAWN_COMMON_SERIALQUEUE_H_ |