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Diffstat (limited to 'src/third_party/boost-1.60.0/boost/thread/executors/generic_executor_ref.hpp')
| -rw-r--r-- | src/third_party/boost-1.60.0/boost/thread/executors/generic_executor_ref.hpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/src/third_party/boost-1.60.0/boost/thread/executors/generic_executor_ref.hpp b/src/third_party/boost-1.60.0/boost/thread/executors/generic_executor_ref.hpp new file mode 100644 index 00000000000..de270bcfed3 --- /dev/null +++ b/src/third_party/boost-1.60.0/boost/thread/executors/generic_executor_ref.hpp @@ -0,0 +1,213 @@ +// Copyright (C) 2014 Vicente J. Botet Escriba +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#ifndef BOOST_THREAD_EXECUTORS_GENERIC_EXECUTOR_REF_HPP +#define BOOST_THREAD_EXECUTORS_GENERIC_EXECUTOR_REF_HPP + +#include <boost/thread/detail/config.hpp> + +#include <boost/thread/detail/delete.hpp> +#include <boost/thread/detail/move.hpp> +#include <boost/thread/executors/executor.hpp> + +#include <boost/shared_ptr.hpp> + +#include <boost/config/abi_prefix.hpp> + +namespace boost +{ + namespace executors + { + + template <class Executor> + class executor_ref : public executor + { + Executor& ex; + public: + /// type-erasure to store the works to do + typedef executors::work work; + + /// executor is not copyable. + BOOST_THREAD_NO_COPYABLE(executor_ref) + executor_ref(Executor& ex) : ex(ex) {} + + /** + * \par Effects + * Destroys the executor. + * + * \par Synchronization + * The completion of all the closures happen before the completion of the executor destructor. + */ + ~executor_ref() {}; + + /** + * \par Effects + * Close the \c executor for submissions. + * The worker threads will work until there is no more closures to run. + */ + void close() { ex.close(); } + + /** + * \par Returns + * Whether the pool is closed for submissions. + */ + bool closed() { return ex.closed(); } + + /** + * \par Effects + * The specified closure will be scheduled for execution at some point in the future. + * If invoked closure throws an exception the executor will call std::terminate, as is the case with threads. + * + * \par Synchronization + * Ccompletion of closure on a particular thread happens before destruction of thread's thread local variables. + * + * \par Throws + * \c sync_queue_is_closed if the thread pool is closed. + * Whatever exception that can be throw while storing the closure. + */ + void submit(BOOST_THREAD_RV_REF(work) closure) { + ex.submit(boost::move(closure)); + } +// void submit(work& closure) { +// ex.submit(closure); +// } + + + /** + * \par Effects + * Try to execute one task. + * + * \par Returns + * Whether a task has been executed. + * + * \par Throws + * Whatever the current task constructor throws or the task() throws. + */ + bool try_executing_one() { return ex.try_executing_one(); } + + }; + + class generic_executor_ref + { + shared_ptr<executor> ex; + public: + /// type-erasure to store the works to do + typedef executors::work work; + + template<typename Executor> + generic_executor_ref(Executor& ex) + //: ex(make_shared<executor_ref<Executor> >(ex)) // todo check why this doesn't works with C++03 + : ex( new executor_ref<Executor>(ex) ) + { + } + + //generic_executor_ref(generic_executor_ref const& other) noexcept {} + //generic_executor_ref& operator=(generic_executor_ref const& other) noexcept {} + + + /** + * \par Effects + * Close the \c executor for submissions. + * The worker threads will work until there is no more closures to run. + */ + void close() { ex->close(); } + + /** + * \par Returns + * Whether the pool is closed for submissions. + */ + bool closed() { return ex->closed(); } + + /** + * \par Requires + * \c Closure is a model of Callable(void()) and a model of CopyConstructible/MoveConstructible. + * + * \par Effects + * The specified closure will be scheduled for execution at some point in the future. + * If invoked closure throws an exception the thread pool will call std::terminate, as is the case with threads. + * + * \par Synchronization + * Completion of closure on a particular thread happens before destruction of thread's thread local variables. + * + * \par Throws + * \c sync_queue_is_closed if the thread pool is closed. + * Whatever exception that can be throw while storing the closure. + */ + + void submit(BOOST_THREAD_RV_REF(work) closure) + { + ex->submit(boost::move(closure)); + } + +#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) + template <typename Closure> + void submit(Closure & closure) + { + //work w ((closure)); + //submit(boost::move(w)); + submit(work(closure)); + } +#endif + void submit(void (*closure)()) + { + work w ((closure)); + submit(boost::move(w)); + //submit(work(closure)); + } + + template <typename Closure> + void submit(BOOST_THREAD_FWD_REF(Closure) closure) + { + work w((boost::forward<Closure>(closure))); + submit(boost::move(w)); + } + +// size_t num_pending_closures() const +// { +// return ex->num_pending_closures(); +// } + + /** + * \par Effects + * Try to execute one task. + * + * \par Returns + * Whether a task has been executed. + * + * \par Throws + * Whatever the current task constructor throws or the task() throws. + */ + bool try_executing_one() { return ex->try_executing_one(); } + + /** + * \par Requires + * This must be called from an scheduled task. + * + * \par Effects + * reschedule functions until pred() + */ + template <typename Pred> + bool reschedule_until(Pred const& pred) + { + do { + //schedule_one_or_yield(); + if ( ! try_executing_one()) + { + return false; + } + } while (! pred()); + return true; + } + + }; + } + using executors::executor_ref; + using executors::generic_executor_ref; +} + +#include <boost/config/abi_suffix.hpp> + +#endif |