77     chdr->size = len;  in cbuf_init()
86     return chdr->size - chdr->used;  in cbuf_free_space()
90     return chdr->size;  in cbuf_size()
98     size_t until_end = chdr->size - chdr->r_index;  in cbuf_get_w_index()
116     bytes_to_end = chdr->size - w_index;  in cbuf_write()
129     size_t bytes_to_end = chdr->size - chdr->r_index;  in cbuf_read_unsafe()
164     chdr->r_index = (chdr->r_index + offset) % chdr->size;  in cbuf_read_offset()
175     chdr->r_index = (chdr->r_index + numbytes) % chdr->size;  in cbuf_pop()
247     const size_t end_idx = chdr->size;  in cbuf_contiguify()
270     size_t until_end = chdr->size - chdr->r_index;  in cbuf_reference()
297     start_index = (cbuf_get_w_index(chdr) + offset) % chdr->size;  in cbuf_reass_write()
298     end_index = (start_index + numbytes) % chdr->size;  in cbuf_reass_write()
305         bytes_to_end = chdr->size - start_index;  in cbuf_reass_write()
327         bytes_to_end = chdr->size - old_w;  in cbuf_reass_merge()
340     size_t bitmap_size = BITS_TO_BYTES(chdr->size);  in cbuf_reass_count_set()
342     offset = (cbuf_get_w_index(chdr) + offset) % chdr->size;  in cbuf_reass_count_set()
344     if (until_end >= limit || until_end < (chdr->size - offset)) {  in cbuf_reass_count_set()
355     size_t range_end = (range_start + offset) % chdr->size;  in cbuf_reass_within_offset()
359         return index < range_end || (index >= range_start && index < chdr->size);  in cbuf_reass_within_offset()