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Adapt mutexes in fifo.c

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This commit is contained in:
Reinhard Panhuber 2021-03-04 19:52:48 +01:00
parent 2e28861cf8
commit de1f36f2b0
1 changed files with 42 additions and 60 deletions
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102
src/common/tusb_fifo.c
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@ -39,44 +39,26 @@
// implement mutex lock and unlock
#if CFG_FIFO_MUTEX
static void tu_fifo_lock_wr(tu_fifo_t *f)
static void tu_fifo_lock(tu_fifo_mutex_t mutex)
{
if (f->mutex_wr)
if (mutex)
{
osal_mutex_lock(f->mutex_wr, OSAL_TIMEOUT_WAIT_FOREVER);
osal_mutex_lock(mutex, OSAL_TIMEOUT_WAIT_FOREVER);
}
}
static void tu_fifo_unlock_wr(tu_fifo_t *f)
static void tu_fifo_unlock(tu_fifo_mutex_t mutex)
{
if (f->mutex_wr)
if (mutex)
{
osal_mutex_unlock(f->mutex_wr);
}
}
static void tu_fifo_lock_rd(tu_fifo_t *f)
{
if (f->mutex_rd)
{
osal_mutex_lock(f->mutex_rd, OSAL_TIMEOUT_WAIT_FOREVER);
}
}
static void tu_fifo_unlock_rd(tu_fifo_t *f)
{
if (f->mutex_rd)
{
osal_mutex_unlock(f->mutex_rd);
osal_mutex_unlock(mutex);
}
}
#else
#define tu_fifo_lock_wr(_ff)
#define tu_fifo_unlock_wr(_ff)
#define tu_fifo_lock_rd(_ff)
#define tu_fifo_unlock_rd(_ff)
#define tu_fifo_lock(_mutex)
#define tu_fifo_unlock(_mutex)
#endif
@ -93,8 +75,8 @@ bool tu_fifo_config(tu_fifo_t *f, void* buffer, uint16_t depth, uint16_t item_si
{
if (depth > 0x8000) return false; // Maximum depth is 2^15 items
tu_fifo_lock_wr(f);
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_wr);
tu_fifo_lock(f->mutex_rd);
f->buffer = (uint8_t*) buffer;
f->depth = depth;
@ -106,8 +88,8 @@ bool tu_fifo_config(tu_fifo_t *f, void* buffer, uint16_t depth, uint16_t item_si
f->rd_idx = f->wr_idx = 0;
tu_fifo_unlock_wr(f);
tu_fifo_lock_rd(f);
tu_fifo_unlock(f->mutex_wr);
tu_fifo_lock(f->mutex_rd);
return true;
}
@ -401,7 +383,7 @@ static uint16_t _tu_fifo_write_n(tu_fifo_t* f, const void * data, uint16_t n, tu
{
if ( n == 0 ) return 0;
tu_fifo_lock_wr(f);
tu_fifo_lock(f->mutex_wr);
uint16_t w = f->wr_idx, r = f->rd_idx;
uint8_t const* buf8 = (uint8_t const*) data;
@ -431,14 +413,14 @@ static uint16_t _tu_fifo_write_n(tu_fifo_t* f, const void * data, uint16_t n, tu
// Advance pointer
f->wr_idx = advance_pointer(f, w, n);
tu_fifo_unlock_wr(f);
tu_fifo_unlock(f->mutex_wr);
return n;
}
static uint16_t _tu_fifo_read_n(tu_fifo_t* f, void * buffer, uint16_t n, tu_fifo_copy_mode_t copy_mode)
{
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_rd);
// Peek the data
n = _tu_fifo_peek_at_n(f, 0, buffer, n, f->wr_idx, f->rd_idx, copy_mode); // f->rd_idx might get modified in case of an overflow so we can not use a local variable
@ -446,7 +428,7 @@ static uint16_t _tu_fifo_read_n(tu_fifo_t* f, void * buffer, uint16_t n, tu_fifo
// Advance read pointer
f->rd_idx = advance_pointer(f, f->rd_idx, n);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_rd);
return n;
}
@ -553,9 +535,9 @@ bool tu_fifo_overflowed(tu_fifo_t* f)
// Only use in case tu_fifo_overflow() returned true!
void tu_fifo_correct_read_pointer(tu_fifo_t* f)
{
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_rd);
_tu_fifo_correct_read_pointer(f, f->wr_idx);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_rd);
}
/******************************************************************************/
@ -576,7 +558,7 @@ void tu_fifo_correct_read_pointer(tu_fifo_t* f)
/******************************************************************************/
bool tu_fifo_read(tu_fifo_t* f, void * buffer)
{
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_rd);
// Peek the data
bool ret = _tu_fifo_peek_at(f, 0, buffer, f->wr_idx, f->rd_idx); // f->rd_idx might get modified in case of an overflow so we can not use a local variable
@ -584,7 +566,7 @@ bool tu_fifo_read(tu_fifo_t* f, void * buffer)
// Advance pointer
f->rd_idx = advance_pointer(f, f->rd_idx, ret);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_rd);
return ret;
}
@ -635,8 +617,8 @@ uint16_t tu_fifo_read_n_const_addr(tu_fifo_t* f, void * buffer, uint16_t n)
/******************************************************************************/
uint16_t tu_fifo_read_n_into_other_fifo(tu_fifo_t* f, tu_fifo_t* f_target, uint16_t offset, uint16_t n)
{
tu_fifo_lock_rd(f);
tu_fifo_lock_wr(f_target);
tu_fifo_lock(f->mutex_rd);
tu_fifo_lock(f_target->mutex_wr);
// Conduct copy
n = tu_fifo_peek_n_into_other_fifo(f, f_target, offset, n);
@ -644,8 +626,8 @@ uint16_t tu_fifo_read_n_into_other_fifo(tu_fifo_t* f, tu_fifo_t* f_target, uint1
// Advance read pointer
f->rd_idx = advance_pointer(f, f->rd_idx, n);
tu_fifo_unlock_rd(f);
tu_fifo_unlock_wr(f_target);
tu_fifo_unlock(f->mutex_rd);
tu_fifo_unlock(f_target->mutex_wr);
return n;
}
@ -667,9 +649,9 @@ uint16_t tu_fifo_read_n_into_other_fifo(tu_fifo_t* f, tu_fifo_t* f_target, uint1
/******************************************************************************/
bool tu_fifo_peek_at(tu_fifo_t* f, uint16_t offset, void * p_buffer)
{
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_rd);
bool ret = _tu_fifo_peek_at(f, offset, p_buffer, f->wr_idx, f->rd_idx);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_rd);
return ret;
}
@ -692,9 +674,9 @@ bool tu_fifo_peek_at(tu_fifo_t* f, uint16_t offset, void * p_buffer)
/******************************************************************************/
uint16_t tu_fifo_peek_at_n(tu_fifo_t* f, uint16_t offset, void * p_buffer, uint16_t n)
{
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_rd);
bool ret = _tu_fifo_peek_at_n(f, offset, p_buffer, n, f->wr_idx, f->rd_idx, TU_FIFO_COPY_INC);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_rd);
return ret;
}
@ -741,7 +723,7 @@ uint16_t tu_fifo_peek_n_into_other_fifo (tu_fifo_t* f, tu_fifo_t* f_target, uint
cnt -= offset;
if (cnt < n) n = cnt;
tu_fifo_lock_wr(f_target); // Lock both read and write pointers - in case of an overwritable FIFO both may be modified
tu_fifo_lock(f_target->mutex_wr); // Lock both read and write pointers - in case of an overwritable FIFO both may be modified
uint16_t wr_rel_tgt = get_relative_pointer(f_target, f_target->wr_idx, 0);
@ -779,7 +761,7 @@ uint16_t tu_fifo_peek_n_into_other_fifo (tu_fifo_t* f, tu_fifo_t* f_target, uint
_tu_fifo_peek_at_n(f, offset + sz, f_target->buffer, n-sz, f_wr_idx, f_rd_idx, TU_FIFO_COPY_INC);
}
tu_fifo_unlock_wr(f_target);
tu_fifo_unlock(f_target->mutex_wr);
return n;
}
@ -802,7 +784,7 @@ uint16_t tu_fifo_peek_n_into_other_fifo (tu_fifo_t* f, tu_fifo_t* f_target, uint
/******************************************************************************/
bool tu_fifo_write(tu_fifo_t* f, const void * data)
{
tu_fifo_lock_wr(f);
tu_fifo_lock(f->mutex_wr);
uint16_t w = f->wr_idx;
@ -816,7 +798,7 @@ bool tu_fifo_write(tu_fifo_t* f, const void * data)
// Advance pointer
f->wr_idx = advance_pointer(f, w, 1);
tu_fifo_unlock_wr(f);
tu_fifo_unlock(f->mutex_wr);
return true;
}
@ -870,13 +852,13 @@ uint16_t tu_fifo_write_n_const_addr(tu_fifo_t* f, const void * data, uint16_t n)
/******************************************************************************/
bool tu_fifo_clear(tu_fifo_t *f)
{
tu_fifo_lock_wr(f);
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_wr);
tu_fifo_lock(f->mutex_rd);
f->rd_idx = f->wr_idx = 0;
f->max_pointer_idx = 2*f->depth-1;
f->non_used_index_space = UINT16_MAX - f->max_pointer_idx;
tu_fifo_unlock_wr(f);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_wr);
tu_fifo_unlock(f->mutex_rd);
return true;
}
@ -892,13 +874,13 @@ bool tu_fifo_clear(tu_fifo_t *f)
/******************************************************************************/
bool tu_fifo_set_overwritable(tu_fifo_t *f, bool overwritable)
{
tu_fifo_lock_wr(f);
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_wr);
tu_fifo_lock(f->mutex_rd);
f->overwritable = overwritable;
tu_fifo_unlock_wr(f);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_wr);
tu_fifo_unlock(f->mutex_rd);
return true;
}
@ -1021,9 +1003,9 @@ uint16_t tu_fifo_get_linear_read_info(tu_fifo_t *f, uint16_t offset, void **ptr,
// Check overflow and correct if required
if (cnt > f->depth)
{
tu_fifo_lock_rd(f);
tu_fifo_lock(f->mutex_rd);
_tu_fifo_correct_read_pointer(f, w);
tu_fifo_unlock_rd(f);
tu_fifo_unlock(f->mutex_rd);
r = f->rd_idx;
cnt = f->depth;
}