| /* |
| Copyright 2016 Garrett D'Amore <garrett@damore.org> |
| |
| 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 NN_CONDVAR_INCLUDED |
| #define NN_CONDVAR_INCLUDED |
| |
| #include "mutex.h" |
| |
| #ifdef NN_HAVE_WINDOWS |
| #include "win.h" |
| struct nn_condvar { |
| CONDITION_VARIABLE cv; |
| }; |
| |
| #else /* !NN_HAVE_WINDOWS */ |
| |
| #include <pthread.h> |
| |
| struct nn_condvar { |
| pthread_cond_t cv; |
| }; |
| |
| #endif /* NN_HAVE_WINDOWS */ |
| |
| typedef struct nn_condvar nn_condvar_t; |
| |
| /* Initialise the condvar. */ |
| int nn_condvar_init (nn_condvar_t *cond); |
| |
| /* Terminate the condvar. */ |
| void nn_condvar_term (nn_condvar_t *cond); |
| |
| /* Sleep on a condition variable, with a possible timeout. The mutex should |
| be held when calling, and will be dropped on entry and reacquired |
| atomically on return. The caller will wake when signaled, or when the |
| timeout expires, but may be woken spuriously as well. If the timeout |
| expires without a signal, -ETIMEDOUT will be returned, otherwise 0 |
| will be returned. If expire is < 0, then no timeout will be used, |
| representing a potentially infinite wait. */ |
| int nn_condvar_wait (nn_condvar_t *cond, nn_mutex_t *lock, int timeout); |
| |
| /* Signal (wake) one condition variable waiter. */ |
| void nn_condvar_signal (nn_condvar_t *cond); |
| |
| /* Signal all condition variable waiters, waking all of them. */ |
| void nn_condvar_broadcast (nn_condvar_t *cond); |
| |
| #endif |