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84 lines
2.4 KiB
84 lines
2.4 KiB
/**
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* Copyright 2020 Huawei Technologies Co., Ltd
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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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*/
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#ifndef GE_COMMON_THREAD_POOL_H_
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#define GE_COMMON_THREAD_POOL_H_
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#include <atomic>
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#include <condition_variable>
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#include <functional>
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#include <future>
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#include <memory>
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#include <queue>
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#include <stdexcept>
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#include <thread>
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#include <utility>
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#include <vector>
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#include "framework/common/debug/ge_log.h"
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#include "framework/common/ge_inner_error_codes.h"
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#include "external/ge/ge_api_error_codes.h"
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#include "graph/types.h"
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#include "common/ge/ge_util.h"
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namespace ge {
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using ThreadTask = std::function<void()>;
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class GE_FUNC_DEV_VISIBILITY GE_FUNC_HOST_VISIBILITY ThreadPool {
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public:
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explicit ThreadPool(uint32_t size = 4);
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~ThreadPool();
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template <class Func, class... Args>
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auto commit(Func &&func, Args &&... args) -> std::future<decltype(func(args...))> {
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GELOGD("commit run task enter.");
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using retType = decltype(func(args...));
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std::future<retType> fail_future;
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if (is_stoped_.load()) {
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GELOGE(ge::FAILED, "thread pool has been stopped.");
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return fail_future;
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}
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auto bindFunc = std::bind(std::forward<Func>(func), std::forward<Args>(args)...);
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auto task = ge::MakeShared<std::packaged_task<retType()>>(bindFunc);
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if (task == nullptr) {
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GELOGE(ge::FAILED, "Make shared failed.");
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return fail_future;
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}
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std::future<retType> future = task->get_future();
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{
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std::lock_guard<std::mutex> lock{m_lock_};
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tasks_.emplace([task]() { (*task)(); });
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}
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cond_var_.notify_one();
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GELOGD("commit run task end");
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return future;
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}
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static void ThreadFunc(ThreadPool *thread_pool);
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private:
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std::vector<std::thread> pool_;
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std::queue<ThreadTask> tasks_;
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std::mutex m_lock_;
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std::condition_variable cond_var_;
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std::atomic<bool> is_stoped_;
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std::atomic<uint32_t> idle_thrd_num_;
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};
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} // namespace ge
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#endif // GE_COMMON_THREAD_POOL_H_
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