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simplify and remove _tu_fifo_empty, _tu_fifo_full. Also correct full condition check

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hathach 2023-01-07 16:48:07 +07:00
parent 2d7849282a
commit a804a1ac09
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GPG Key ID: F5D50C6D51D17CBA
1 changed files with 7 additions and 23 deletions
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30
src/common/tusb_fifo.c
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@ -38,12 +38,12 @@
#if OSAL_MUTEX_REQUIRED
static inline void _ff_lock(osal_mutex_t mutex)
TU_ATTR_ALWAYS_INLINE static inline void _ff_lock(osal_mutex_t mutex)
{
if (mutex) osal_mutex_lock(mutex, OSAL_TIMEOUT_WAIT_FOREVER);
}
static inline void _ff_unlock(osal_mutex_t mutex)
TU_ATTR_ALWAYS_INLINE static inline void _ff_unlock(osal_mutex_t mutex)
{
if (mutex) osal_mutex_unlock(mutex);
}
@ -361,30 +361,14 @@ static inline uint16_t idx2ptr(uint16_t idx, uint16_t depth)
// Works on local copies of w and r - return only the difference and as such can be used to determine an overflow
static inline uint16_t _tu_fifo_count(tu_fifo_t* f, uint16_t wr_idx, uint16_t rd_idx)
{
uint16_t cnt;
// In case we have non-power of two depth we need a further modification
if (wr_idx >= rd_idx)
{
cnt = (uint16_t) (wr_idx - rd_idx);
return (uint16_t) (wr_idx - rd_idx);
} else
{
cnt = (uint16_t) (2*f->depth - (rd_idx - wr_idx));
return (uint16_t) (2*f->depth - (rd_idx - wr_idx));
}
return cnt;
}
// Works on local copies of w and r
static inline bool _tu_fifo_empty(uint16_t wr_idx, uint16_t rd_idx)
{
return wr_idx == rd_idx;
}
// Works on local copies of w and r
static inline bool _tu_fifo_full(tu_fifo_t* f, uint16_t wAbs, uint16_t rAbs)
{
return _tu_fifo_count(f, wAbs, rAbs) == f->depth;
}
// Works on local copies of w and r
@ -601,7 +585,7 @@ uint16_t tu_fifo_count(tu_fifo_t* f)
/******************************************************************************/
bool tu_fifo_empty(tu_fifo_t* f)
{
return _tu_fifo_empty(f->wr_idx, f->rd_idx);
return f->wr_idx == f->rd_idx;
}
/******************************************************************************/
@ -619,7 +603,7 @@ bool tu_fifo_empty(tu_fifo_t* f)
/******************************************************************************/
bool tu_fifo_full(tu_fifo_t* f)
{
return _tu_fifo_full(f, f->wr_idx, f->rd_idx);
return _tu_fifo_count(f, f->wr_idx, f->rd_idx) >= f->depth;
}
/******************************************************************************/
@ -798,7 +782,7 @@ bool tu_fifo_write(tu_fifo_t* f, const void * data)
bool ret;
uint16_t const wr_idx = f->wr_idx;
if ( _tu_fifo_full(f, wr_idx, f->rd_idx) && !f->overwritable )
if ( tu_fifo_full(f) && !f->overwritable )
{
ret = false;
}else