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Imbus 2024-06-30 05:20:01 +02:00
parent 46a341e537
commit 0c89aa8bfc
2 changed files with 14 additions and 9 deletions
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16
ringbuf.c
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@ -34,9 +34,8 @@ rb_destroy(struct RingBuf *rb, void(free)())
enum WriteResult
rb_push_back(struct RingBuf *rb, const void *item, MEMCPY_T memcpy_fn)
{
if(rb->count == rb->capacity) {
// handle error
}
if(rb->count == rb->capacity)
return Full;
memcpy_fn(rb->write_head, item, rb->size);
@ -48,15 +47,18 @@ rb_push_back(struct RingBuf *rb, const void *item, MEMCPY_T memcpy_fn)
rb->count++;
}
void
enum ReadResult
rb_pop_front(struct RingBuf *rb, void *item)
{
if(rb->count == 0) {
// handle error
}
if(rb->count == 0)
return Empty;
memcpy(item, rb->read_head, rb->size);
rb->read_head = (char *)rb->read_head + rb->size;
if(rb->read_head == rb->buffer_end)
rb->read_head = rb->buffer;
rb->count--;
}

7
ringbuf.h
View file

@ -24,7 +24,10 @@ struct RingBuf {
void *buffer_end; /* The end of the buffer */
} __attribute__((packed));
enum WriteResult { CollisionError, Ok };
// TODO: Perhaps unify these to RBResult?
enum WriteResult { Full, WriteOk }; /** Result of a write */
enum ReadResult { Empty, ReadOk }; /** Result of a read */
/** Initialize the ring buffer */
void rb_init(struct RingBuf *rb, rb_size_t capacity, void *(*alloc)(rb_size_t),
@ -35,7 +38,7 @@ enum WriteResult rb_push_back(struct RingBuf *rb, const void *item,
MEMCPY_T memcpy_fn);
/** Read data from the ring buffer */
void rb_pop_front(struct RingBuf *rb, void *item);
enum ReadResult rb_pop_front(struct RingBuf *rb, void *item);
/** Free the ring buffer */
void rb_destroy(struct RingBuf *rb, void(free)());