1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #ifndef EIGEN_CXX11_THREADPOOL_THREAD_POOL_INTERFACE_H 11 #define EIGEN_CXX11_THREADPOOL_THREAD_POOL_INTERFACE_H 12 13 namespace Eigen { 14 15 // This defines an interface that ThreadPoolDevice can take to use 16 // custom thread pools underneath. 17 class ThreadPoolInterface { 18 public: 19 virtual void Schedule(std::function<void()> fn) = 0; 20 21 // Returns the number of threads in the pool. 22 virtual int NumThreads() const = 0; 23 24 // Returns a logical thread index between 0 and NumThreads() - 1 if called 25 // from one of the threads in the pool. Returns -1 otherwise. 26 virtual int CurrentThreadId() const = 0; 27 ~ThreadPoolInterface()28 virtual ~ThreadPoolInterface() {} 29 }; 30 31 } // namespace Eigen 32 33 #endif // EIGEN_CXX11_THREADPOOL_THREAD_POOL_INTERFACE_H 34