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Diffstat (limited to 'src/third_party/boost-1.56.0/boost/thread/executors/serial_executor.hpp')
| -rw-r--r-- | src/third_party/boost-1.56.0/boost/thread/executors/serial_executor.hpp | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/src/third_party/boost-1.56.0/boost/thread/executors/serial_executor.hpp b/src/third_party/boost-1.56.0/boost/thread/executors/serial_executor.hpp deleted file mode 100644 index 5aaaacf9626..00000000000 --- a/src/third_party/boost-1.56.0/boost/thread/executors/serial_executor.hpp +++ /dev/null @@ -1,213 +0,0 @@ -// Copyright (C) 2013 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) -// -// 2013/11 Vicente J. Botet Escriba -// first implementation of a simple serial scheduler. - -#ifndef BOOST_THREAD_SERIAL_EXECUTOR_HPP -#define BOOST_THREAD_SERIAL_EXECUTOR_HPP - -#include <boost/thread/detail/config.hpp> -#include <boost/thread/detail/delete.hpp> -#include <boost/thread/detail/move.hpp> -#include <boost/thread/sync_queue.hpp> -#include <boost/thread/executors/work.hpp> -#include <boost/thread/executors/executor.hpp> -#include <boost/thread/future.hpp> -#include <boost/thread/scoped_thread.hpp> - -#include <boost/config/abi_prefix.hpp> - -namespace boost -{ -namespace executors -{ - class serial_executor - { - public: - /// type-erasure to store the works to do - typedef executors::work work; - private: - typedef scoped_thread<> thread_t; - - /// the thread safe work queue - sync_queue<work > work_queue; - executor& ex; - thread_t thr; - - struct try_executing_one_task { - work& task; - boost::promise<void> &p; - try_executing_one_task(work& task, boost::promise<void> &p) - : task(task), p(p) {} - void operator()() { - task(); // if task() throws promise is not set but as the the program terminates and should terminate there is no need to use try-catch here. - p.set_value(); - } - }; - public: - /** - * Effects: try to execute one task. - * Returns: whether a task has been executed. - * Throws: whatever the current task constructor throws or the task() throws. - */ - bool try_executing_one() - { - work task; - try - { - if (work_queue.try_pull_front(task) == queue_op_status::success) - { - boost::promise<void> p; - try_executing_one_task tmp(task,p); - ex.submit(tmp); -// ex.submit([&task, &p]() -// { -// task(); // if task() throws promise is not set but as the the program terminates and should terminate there is no need to use try-catch here. -// p.set_value(); -// }); - p.get_future().wait(); - return true; - } - return false; - } - catch (std::exception& ) - { - return false; - } - catch (...) - { - return false; - } - } - private: - /** - * Effects: schedule one task or yields - * Throws: whatever the current task constructor throws or the task() throws. - */ - void schedule_one_or_yield() - { - if ( ! try_executing_one()) - { - this_thread::yield(); - } - } - - /** - * The main loop of the worker thread - */ - void worker_thread() - { - while (!closed()) - { - schedule_one_or_yield(); - } - while (try_executing_one()) - { - } - } - - public: - /// serial_executor is not copyable. - BOOST_THREAD_NO_COPYABLE(serial_executor) - - /** - * \b Effects: creates a thread pool that runs closures using one of its closure-executing methods. - * - * \b Throws: Whatever exception is thrown while initializing the needed resources. - */ - serial_executor(executor& ex) - : ex(ex), thr(&serial_executor::worker_thread, this) - { - } - /** - * \b Effects: Destroys the thread pool. - * - * \b Synchronization: The completion of all the closures happen before the completion of the \c serial_executor destructor. - */ - ~serial_executor() - { - // signal to all the worker thread that there will be no more submissions. - close(); - } - - /** - * \b Effects: close the \c serial_executor for submissions. - * The loop will work until there is no more closures to run. - */ - void close() - { - work_queue.close(); - } - - /** - * \b Returns: whether the pool is closed for submissions. - */ - bool closed() - { - return work_queue.closed(); - } - - /** - * \b Requires: \c Closure is a model of \c Callable(void()) and a model of \c CopyConstructible/MoveConstructible. - * - * \b Effects: The specified \c closure will be scheduled for execution at some point in the future. - * If invoked closure throws an exception the \c serial_executor will call \c std::terminate, as is the case with threads. - * - * \b Synchronization: completion of \c closure on a particular thread happens before destruction of thread's thread local variables. - * - * \b Throws: \c sync_queue_is_closed if the thread pool is closed. - * Whatever exception that can be throw while storing the closure. - */ - -#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) - template <typename Closure> - void submit(Closure & closure) - { - work w ((closure)); - work_queue.push_back(boost::move(w)); - //work_queue.push(work(closure)); // todo check why this doesn't work - } -#endif - void submit(void (*closure)()) - { - work w ((closure)); - work_queue.push_back(boost::move(w)); - //work_queue.push_back(work(closure)); // todo check why this doesn't work - } - - template <typename Closure> - void submit(BOOST_THREAD_RV_REF(Closure) closure) - { - work w =boost::move(closure); - work_queue.push_back(boost::move(w)); - //work_queue.push_back(work(boost::move(closure))); // todo check why this doesn't work - } - - /** - * \b Requires: This must be called from an scheduled task. - * - * \b Effects: reschedule functions until pred() - */ - template <typename Pred> - bool reschedule_until(Pred const& pred) - { - do { - if ( ! try_executing_one()) - { - return false; - } - } while (! pred()); - return true; - } - - }; -} -using executors::serial_executor; -} - -#include <boost/config/abi_suffix.hpp> - -#endif |