andrey
077ac9887b
All feature flags now use positive naming (enabled by default): - PIP_HAS_FILESYSTEM, PIP_HAS_THREADS, PIP_HAS_SOCKET - PIP_HAS_PROCESS, PIP_HAS_DYNLIB, PIP_HAS_FFT, PIP_HAS_SERIAL Preprocessor guards inverted: - #ifndef PIP_NO_X → #ifdef PIP_HAS_X - #ifdef PIP_NO_X → #ifndef PIP_HAS_X CMake options default ON instead of OFF. Platform blocks set flags OFF to disable features. 85 files transformed via Python script + 2 manual fixes.
70 lines
3.0 KiB
C++
70 lines
3.0 KiB
C++
//! \~\file pithreadnotifier.h
|
|
//! \~\ingroup Thread
|
|
//! \~\brief
|
|
//! \~english Counting notification helper for coordination between threads
|
|
//! \~russian Счетный помощник уведомления для координации между потоками
|
|
/*
|
|
PIP - Platform Independent Primitives
|
|
Class for simply notify and wait in different threads
|
|
Ivan Pelipenko peri4ko@yandex.ru
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef PITHREADNOTIFIER_H
|
|
#define PITHREADNOTIFIER_H
|
|
|
|
#include "piconditionvar.h"
|
|
|
|
#ifdef PIP_HAS_THREADS
|
|
|
|
//! \~\ingroup Thread
|
|
//! \~\brief
|
|
//! \~english Thread notifier class for synchronization between threads.
|
|
//! \~russian Класс уведомления потоков для синхронизации между потоками.
|
|
//! \~\details
|
|
//! \~english
|
|
//! Each \a notify() stores one pending wake-up. A later \a wait() or
|
|
//! \a waitFor() consumes one stored notification; with multiple waiters the
|
|
//! resume order is unspecified.
|
|
//! \~russian
|
|
//! Каждый вызов \a notify() сохраняет одно ожидающее пробуждение. Последующий
|
|
//! \a wait() или \a waitFor() потребляет одно сохраненное уведомление; при
|
|
//! нескольких ожидающих потоках порядок возобновления не определен.
|
|
class PIP_EXPORT PIThreadNotifier {
|
|
public:
|
|
PIThreadNotifier();
|
|
|
|
//! \~english Start waiting, return if other thread call \a notify()
|
|
//! \~russian Начать ожидание, продолжает когда другой поток вызовет \a notify()
|
|
void wait();
|
|
|
|
//! \~english Start waiting no longer than "timeout", return \b true if other thread call \a notify(), \b false if timeout expired
|
|
//! \~russian Начать ожидание не дольше чем "timeout", возвращает \b true когда другой поток вызовал \a notify(), \b false если таймаут
|
|
//! истек
|
|
bool waitFor(PISystemTime timeout);
|
|
|
|
//! \~english Notify one waiting thread, which waiting on \a wait() function
|
|
//! \~russian Уведомить один из ожидающих потоков, которые висят на методе \a wait()
|
|
void notify();
|
|
|
|
private:
|
|
ullong cnt;
|
|
PIMutex m;
|
|
PIConditionVariable v;
|
|
};
|
|
#endif // PIP_HAS_THREADS
|
|
|
|
#endif // PITHREADNOTIFIER_H
|