137 lines
3.8 KiB
Plaintext
137 lines
3.8 KiB
Plaintext
// Copyright (C) 2013,2014 Vicente J. Botet Escriba
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// 2013/09 Vicente J. Botet Escriba
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// Adapt to boost from CCIA C++11 implementation
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#ifndef BOOST_THREAD_EXECUTORS_EXECUTOR_ADAPTOR_HPP
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#define BOOST_THREAD_EXECUTORS_EXECUTOR_ADAPTOR_HPP
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#include <boost/thread/detail/config.hpp>
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#include <boost/thread/executors/executor.hpp>
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#include <boost/config/abi_prefix.hpp>
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namespace boost
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{
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namespace executors
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{
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/**
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* Polymorphic adaptor of a model of Executor to an executor.
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*/
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template <typename Executor>
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class executor_adaptor : public executor
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{
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Executor ex;
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public:
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/// type-erasure to store the works to do
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typedef executor::work work;
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/// executor is not copyable.
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BOOST_THREAD_NO_COPYABLE(executor_adaptor)
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/**
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* executor_adaptor constructor
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*/
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#if ! defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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template <typename ...Args>
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executor_adaptor(BOOST_THREAD_RV_REF(Args) ... args) : ex(boost::forward<Args>(args)...) {}
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#else
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/**
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* executor_adaptor constructor
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*/
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executor_adaptor() : ex() {}
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template <typename A1>
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executor_adaptor(
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BOOST_THREAD_FWD_REF(A1) a1
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) :
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ex(
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boost::forward<A1>(a1)
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) {}
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template <typename A1, typename A2>
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executor_adaptor(
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BOOST_THREAD_FWD_REF(A1) a1,
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BOOST_THREAD_FWD_REF(A2) a2
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) :
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ex(
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boost::forward<A1>(a1),
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boost::forward<A2>(a2)
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) {}
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template <typename A1, typename A2, typename A3>
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executor_adaptor(
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BOOST_THREAD_FWD_REF(A1) a1,
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BOOST_THREAD_FWD_REF(A2) a2,
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BOOST_THREAD_FWD_REF(A3) a3
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) :
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ex(
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boost::forward<A1>(a1),
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boost::forward<A2>(a2),
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boost::forward<A3>(a3)
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) {}
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#endif
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Executor& underlying_executor() { return ex; }
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/**
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* \b Effects: close the \c executor for submissions.
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* The worker threads will work until there is no more closures to run.
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*/
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void close() { ex.close(); }
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/**
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* \b Returns: whether the pool is closed for submissions.
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*/
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bool closed() { return ex.closed(); }
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/**
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* \b Effects: The specified closure will be scheduled for execution at some point in the future.
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* If invoked closure throws an exception the executor will call std::terminate, as is the case with threads.
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*
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* \b Synchronization: completion of closure on a particular thread happens before destruction of thread's thread local variables.
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*
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* \b Throws: \c sync_queue_is_closed if the thread pool is closed.
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* Whatever exception that can be throw while storing the closure.
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*/
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void submit(BOOST_THREAD_RV_REF(work) closure) {
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return ex.submit(boost::move(closure));
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}
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#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
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template <typename Closure>
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void submit(Closure & closure)
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{
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submit(work(closure));
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}
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#endif
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void submit(void (*closure)())
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{
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submit(work(closure));
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}
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template <typename Closure>
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void submit(BOOST_THREAD_FWD_REF(Closure) closure)
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{
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//submit(work(boost::forward<Closure>(closure)));
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work w((boost::forward<Closure>(closure)));
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submit(boost::move(w));
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}
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/**
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* Effects: try to execute one task.
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* Returns: whether a task has been executed.
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* Throws: whatever the current task constructor throws or the task() throws.
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*/
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bool try_executing_one() { return ex.try_executing_one(); }
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};
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}
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using executors::executor_adaptor;
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}
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#include <boost/config/abi_suffix.hpp>
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#endif
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