| /* |
| Copyright (c) 2012 Martin Sustrik All rights reserved. |
| |
| 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_MUTEX_INCLUDED |
| #define NN_MUTEX_INCLUDED |
| |
| #ifdef NN_HAVE_WINDOWS |
| #include "win.h" |
| #else |
| #include <pthread.h> |
| #endif |
| |
| struct nn_mutex { |
| /* NB: The fields of this structure are private to the mutex |
| implementation. */ |
| #ifdef NN_HAVE_WINDOWS |
| CRITICAL_SECTION cs; |
| DWORD owner; |
| int debug; |
| #else |
| pthread_mutex_t mutex; |
| #endif |
| }; |
| |
| typedef struct nn_mutex nn_mutex_t; |
| |
| /* Initialise the mutex. */ |
| void nn_mutex_init (nn_mutex_t *self); |
| |
| /* Terminate the mutex. */ |
| void nn_mutex_term (nn_mutex_t *self); |
| |
| /* Lock the mutex. Behaviour of multiple locks from the same thread is |
| undefined. */ |
| void nn_mutex_lock (nn_mutex_t *self); |
| |
| /* Unlock the mutex. Behaviour of unlocking an unlocked mutex is undefined */ |
| void nn_mutex_unlock (nn_mutex_t *self); |
| |
| #endif |