47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
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#ifndef __ASM_SEMAPHORE_H__
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#define __ASM_SEMAPHORE_H__
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//#include <cyg/hal/drv_api.h>
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//struct semaphore {
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// cyg_drv_mutex_t x;
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//};
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//#define DECLARE_MUTEX(x) //struct semaphore x = { { 0 } };
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//#define DECLARE_MUTEX_LOCKED(x) //struct semaphore x = { { 1 } };
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//
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//#define init_MUTEX(sem) //cyg_drv_mutex_init((cyg_drv_mutex_t *)sem)
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//#define init_MUTEX_LOCKED(sem) //do { cyg_drv_mutex_init((cyg_drv_mutex_t *)sem); cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem); } while(0)
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//#define down(sem) //cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem)
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//#define down_interruptible(sem) //({ cyg_drv_mutex_lock((cyg_drv_mutex_t *)sem), 0; })
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//#define down_trylock(sem) //cyg_drv_mutex_trylock((cyg_drv_mutex_t *)sem)
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//#define up(sem) //cyg_drv_mutex_unlock((cyg_drv_mutex_t *)sem)
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#include <rtthread.h>
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struct semaphore {
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struct rt_mutex x;
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};
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#define DECLARE_MUTEX(x) struct semaphore x = { { .value = 0, } };
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#define DECLARE_MUTEX_LOCKED(x) struct semaphore x = { { .vlalue = 1 } };
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#define init_MUTEX(sem) rt_mutex_init((rt_mutex_t *)sem, "mutex", RT_IPC_FLAG_FIFO)
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#define init_MUTEX_LOCKED(sem) do { \
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rt_mutex_init((rt_mutex_t *)sem, "mutex", RT_IPC_FLAG_FIFO);\
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rt_mutex_take((rt_mutex_t *)sem, RT_WAITING_FOREVER);} \
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while(0)
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#define down(sem) rt_mutex_take((rt_mutex_t *)sem, RT_WAITING_FOREVER)
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#define down_interruptible(sem) ({rt_mutex_take((rt_mutex_t *)sem, RT_WAITING_FOREVER), 0; })
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/*
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Attempt to lock the mutex pointed to by the mutex argument without waiting.
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If the mutex is already locked by some other thread then this function
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returns FALSE. If the function can lock the mutex without waiting, then
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TRUE is returned.
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void cyg_drv_mutex_unlock( cyg_drv_mutex *mutex )
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*/
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#define down_trylock(sem) rt_mutex_take((rt_mutex_t *)sem, RT_WAITING_NO)
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#define up(sem) rt_mutex_release((rt_mutex_t *)sem)
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#endif /* __ASM_SEMAPHORE_H__ */
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