diff options
Diffstat (limited to 'src/lib/shm_ap_rbuff.c')
| -rw-r--r-- | src/lib/shm_ap_rbuff.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/lib/shm_ap_rbuff.c b/src/lib/shm_ap_rbuff.c index 63aa8813..666e053f 100644 --- a/src/lib/shm_ap_rbuff.c +++ b/src/lib/shm_ap_rbuff.c @@ -42,6 +42,7 @@ #define shm_rbuff_used(rb)((*rb->ptr_head + SHM_RBUFF_SIZE - *rb->ptr_tail) \ & (SHM_RBUFF_SIZE - 1)) #define shm_rbuff_free(rb)(shm_rbuff_used(rb) + 1 < SHM_RBUFF_SIZE) +#define shm_rbuff_empty(rb) (*rb->ptr_head == *rb->ptr_tail) #define head_el_ptr (rb->shm_base + *rb->ptr_head) #define tail_el_ptr (rb->shm_base + *rb->ptr_tail) @@ -239,8 +240,7 @@ int shm_ap_rbuff_write(struct shm_ap_rbuff * rb, struct rb_entry * e) pthread_mutex_unlock(rb->shm_mutex); return -1; } - - if (shm_rbuff_used(rb) == 0) + if (shm_rbuff_empty(rb)) pthread_cond_broadcast(rb->work); *head_el_ptr = *e; @@ -262,11 +262,9 @@ struct rb_entry * shm_ap_rbuff_read(struct shm_ap_rbuff * rb) (void*) rb->shm_mutex); pthread_mutex_lock(rb->shm_mutex); - while(shm_rbuff_used(rb) == 0) + while(shm_rbuff_empty(rb)) pthread_cond_wait(rb->work, rb->shm_mutex); - pthread_cleanup_pop(0); - e = malloc(sizeof(*e)); if (e == NULL) { pthread_mutex_unlock(rb->shm_mutex); @@ -277,7 +275,7 @@ struct rb_entry * shm_ap_rbuff_read(struct shm_ap_rbuff * rb) *rb->ptr_tail = (*rb->ptr_tail + 1) & (SHM_RBUFF_SIZE -1); - pthread_mutex_unlock(rb->shm_mutex); + pthread_cleanup_pop(1); return e; } @@ -288,7 +286,7 @@ ssize_t shm_ap_rbuff_read_port(struct shm_ap_rbuff * rb, int port_id) pthread_mutex_lock(rb->shm_mutex); - if (shm_rbuff_used(rb) == 0) { + if (shm_rbuff_empty(rb)) { pthread_mutex_unlock(rb->shm_mutex); return -1; } |