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Diffstat (limited to 'src/threading/event.h')
-rw-r--r-- | src/threading/event.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/threading/event.h b/src/threading/event.h new file mode 100644 index 000000000..dd5164576 --- /dev/null +++ b/src/threading/event.h @@ -0,0 +1,72 @@ +/* +This file is a part of the JThread package, which contains some object- +oriented thread wrappers for different thread implementations. + +Copyright (c) 2000-2006 Jori Liesenborgs (jori.liesenborgs@gmail.com) + +Permission is hereby granted, free of charge, to any person obtaining a +copy of this software and associated documentation files (the "Software"), +to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, +and/or sell copies of the Software, and to permit persons to whom the +Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. +*/ + +#ifndef THREADING_EVENT_H +#define THREADING_EVENT_H + +#if __cplusplus >= 201103L + #include <condition_variable> + #include "threading/mutex.h" + #include "threading/mutex_auto_lock.h" +#elif defined(_WIN32) + #ifndef WIN32_LEAN_AND_MEAN + #define WIN32_LEAN_AND_MEAN + #endif + #include <windows.h> +#else + #include <pthread.h> +#endif + + +/** A syncronization primitive that will wake up one waiting thread when signaled. + * Calling @c signal() multiple times before a waiting thread has had a chance + * to notice the signal will wake only one thread. Additionally, if no threads + * are waiting on the event when it is signaled, the next call to @c wait() + * will return (almost) immediately. + */ +class Event { +public: + Event(); +#if __cplusplus < 201103L + ~Event(); +#endif + void wait(); + void signal(); + +private: +#if __cplusplus >= 201103L + std::condition_variable cv; + Mutex mutex; + bool notified; +#elif defined(_WIN32) + HANDLE event; +#else + pthread_cond_t cv; + pthread_mutex_t mutex; + bool notified; +#endif +}; + +#endif |