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First fix for the ring buffer

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Quentin Dufour 2019-02-12 17:57:51 +01:00
parent 8fc0d16e85
commit 08a73180d4
1 changed files with 2 additions and 1 deletions
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3
src/utils.c
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@ -15,6 +15,7 @@ int ring_buffer_read(struct ring_buffer* rb, char* dest, int size) {
slice2 = used_space - slice1; slice2 = used_space - slice1;
} }
printf("max_buffer=%d, head=%d, tail=%d, size=%d, slice1=%d, slice2=%d\n", RING_BUFFER_SIZE, rb->head, rb->tail, size, slice1, slice2);
memcpy(dest, rb->buffer + rb->head, slice1); memcpy(dest, rb->buffer + rb->head, slice1);
memcpy(dest+slice1, rb->buffer, slice2); memcpy(dest+slice1, rb->buffer, slice2);
@ -53,7 +54,7 @@ int ring_buffer_write(struct ring_buffer* rb, char* source, int size) {
int ring_buffer_free_space(struct ring_buffer* rb) { int ring_buffer_free_space(struct ring_buffer* rb) {
if (rb->head > rb->tail) return rb->head - rb->tail; if (rb->head > rb->tail) return rb->head - rb->tail;
return RING_BUFFER_SIZE + (rb->tail - rb->head); return RING_BUFFER_SIZE - (rb->tail - rb->head);
} }
int ring_buffer_used_space(struct ring_buffer* rb) { int ring_buffer_used_space(struct ring_buffer* rb) {