| /* |
| Copyright (c) 2011 mingw-w64 project |
| |
| 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 WIN_PTHREADS_RWLOCK_H |
| #define WIN_PTHREADS_RWLOCK_H |
| |
| #define LIFE_RWLOCK 0xBAB1F0ED |
| #define DEAD_RWLOCK 0xDEADB0EF |
| |
| #define INIT_RWLOCK(rwl) { int r; \ |
| if (STATIC_RWL_INITIALIZER(*rwl)) { if ((r = rwlock_static_init(rwl))) { if (r != EBUSY) return r; }}} |
| |
| #define STATIC_RWL_INITIALIZER(x) ((pthread_rwlock_t)(x) == ((pthread_rwlock_t)PTHREAD_RWLOCK_INITIALIZER)) |
| |
| typedef struct rwlock_t rwlock_t; |
| struct rwlock_t { |
| unsigned int valid; |
| int busy; |
| LONG nex_count; /* Exclusive access counter. */ |
| LONG nsh_count; /* Shared access counter. */ |
| LONG ncomplete; /* Shared completed counter. */ |
| pthread_mutex_t mex; /* Exclusive access protection. */ |
| pthread_mutex_t mcomplete; /* Shared completed protection. */ |
| pthread_cond_t ccomplete; /* Shared access completed queue. */ |
| }; |
| |
| #define RWL_SET 0x01 |
| #define RWL_TRY 0x02 |
| |
| void rwl_print(volatile pthread_rwlock_t *rwl, char *txt); |
| void rwl_print_set(int state); |
| |
| #endif |