53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
/*! @file pithreadnotifier.h
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* @brief Class for simply notify and wait in different threads
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*/
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/*
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PIP - Platform Independent Primitives
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Class for simply notify and wait in different threads
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Andrey Bychkov work.a.b@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PITHREADNOTIFIER_H
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#define PITHREADNOTIFIER_H
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#include "piconditionvar.h"
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class PIP_EXPORT PIThreadNotifier {
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public:
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PIThreadNotifier();
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//! Start waiting, return if other thread call \a notifyOnce().
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//! If \a notifyOnce() has been called before, then returns immediately.
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//! If notifyOnce() has been called "n" times, then returns immediately "n" times,
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//! but only if wait in one thread.
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//! If many threads waiting, then If notifyOnce() has been called "n" times,
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//! All threads total returns "n" times in random sequence.
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void wait();
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//! Notify one waiting thread, wich waiting on \a wait() function.
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//! If many threads waiting, then notify randomly one.
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//! If call this "n" times, then notify any waiting threads totally "n" times.
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void notifyOnce();
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private:
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ullong cnt;
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PIMutex m;
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PIConditionVariable v;
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};
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#endif // PITHREADNOTIFIER_H
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