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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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81 lines
2.6 KiB
81 lines
2.6 KiB
/* |
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#ifndef GRPCXX_DYNAMIC_THREAD_POOL_H |
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#define GRPCXX_DYNAMIC_THREAD_POOL_H |
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#include <grpc++/config.h> |
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#include <grpc++/impl/sync.h> |
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#include <grpc++/impl/thd.h> |
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#include <grpc++/thread_pool_interface.h> |
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#include <list> |
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#include <queue> |
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namespace grpc { |
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class DynamicThreadPool GRPC_FINAL : public ThreadPoolInterface { |
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public: |
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explicit DynamicThreadPool(int reserve_threads); |
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~DynamicThreadPool(); |
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void Add(const std::function<void()>& callback) GRPC_OVERRIDE; |
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private: |
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class DynamicThread { |
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public: |
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DynamicThread(DynamicThreadPool *pool); |
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~DynamicThread(); |
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private: |
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DynamicThreadPool *pool_; |
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std::unique_ptr<grpc::thread> thd_; |
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void ThreadFunc(); |
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}; |
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grpc::mutex mu_; |
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grpc::condition_variable cv_; |
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grpc::condition_variable shutdown_cv_; |
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bool shutdown_; |
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std::queue<std::function<void()>> callbacks_; |
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int reserve_threads_; |
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int nthreads_; |
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int threads_waiting_; |
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std::list<DynamicThread*> dead_threads_; |
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void ThreadFunc(); |
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static void ReapThreads(std::list<DynamicThread*>* tlist); |
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}; |
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} // namespace grpc |
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#endif // GRPCXX_DYNAMIC_THREAD_POOL_H
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