12 static inline struct id_offset *find_unused(const struct buffer_share *mix)  in find_unused()  argument
16 	for (i = 0; i < mix->id_sz; i++) {  in find_unused()
17 		if (!mix->wr_idx[i].used)  in find_unused()
18 			return &mix->wr_idx[i];  in find_unused()
25 static inline struct id_offset *find_id(const struct buffer_share *mix,  in find_id()  argument
30 	for (i = 0; i < mix->id_sz; i++) {  in find_id()
31 		if (mix->wr_idx[i].used && id == mix->wr_idx[i].id)  in find_id()
32 			return &mix->wr_idx[i];  in find_id()
38 static void alloc_more_ids(struct buffer_share *mix)  in alloc_more_ids()  argument
40 	unsigned int new_size = mix->id_sz * 2;  in alloc_more_ids()
43 	mix->wr_idx = realloc(mix->wr_idx, sizeof(mix->wr_idx[0]) * new_size);  in alloc_more_ids()
45 	for (i = mix->id_sz; i < new_size; i++)  in alloc_more_ids()
46 		mix->wr_idx[i].used = 0;  in alloc_more_ids()
48 	mix->id_sz = new_size;  in alloc_more_ids()
53 	struct buffer_share *mix;  in buffer_share_create()  local
55 	mix = calloc(1, sizeof(*mix));  in buffer_share_create()
56 	mix->id_sz = INITIAL_ID_SIZE;  in buffer_share_create()
57 	mix->wr_idx = calloc(mix->id_sz, sizeof(mix->wr_idx[0]));  in buffer_share_create()
58 	mix->buf_sz = buf_sz;  in buffer_share_create()
60 	return mix;  in buffer_share_create()
63 void buffer_share_destroy(struct buffer_share *mix)  in buffer_share_destroy()  argument
65 	if (!mix)  in buffer_share_destroy()
67 	free(mix->wr_idx);  in buffer_share_destroy()
68 	free(mix);  in buffer_share_destroy()
71 int buffer_share_add_id(struct buffer_share *mix, unsigned int id, void *data)  in buffer_share_add_id()  argument
75 	o = find_id(mix, id);  in buffer_share_add_id()
79 	o = find_unused(mix);  in buffer_share_add_id()
81 		alloc_more_ids(mix);  in buffer_share_add_id()
83 	o = find_unused(mix);  in buffer_share_add_id()
92 int buffer_share_rm_id(struct buffer_share *mix, unsigned int id)  in buffer_share_rm_id()  argument
96 	o = find_id(mix, id);  in buffer_share_rm_id()
105 int buffer_share_offset_update(struct buffer_share *mix, unsigned int id,  in buffer_share_offset_update()  argument
110 	for (i = 0; i < mix->id_sz; i++) {  in buffer_share_offset_update()
111 		if (id != mix->wr_idx[i].id)  in buffer_share_offset_update()
114 		mix->wr_idx[i].offset += delta;  in buffer_share_offset_update()
121 unsigned int buffer_share_get_new_write_point(struct buffer_share *mix)  in buffer_share_get_new_write_point()  argument
123 	unsigned int min_written = mix->buf_sz + 1;  in buffer_share_get_new_write_point()
126 	for (i = 0; i < mix->id_sz; i++) {  in buffer_share_get_new_write_point()
127 		struct id_offset *o = &mix->wr_idx[i];  in buffer_share_get_new_write_point()
134 	for (i = 0; i < mix->id_sz; i++) {  in buffer_share_get_new_write_point()
135 		struct id_offset *o = &mix->wr_idx[i];  in buffer_share_get_new_write_point()
139 	if (min_written > mix->buf_sz)  in buffer_share_get_new_write_point()
145 static struct id_offset *get_id_offset(const struct buffer_share *mix,  in get_id_offset()  argument
151 	for (i = 0; i < mix->id_sz; i++) {  in get_id_offset()
152 		o = &mix->wr_idx[i];  in get_id_offset()
159 unsigned int buffer_share_id_offset(const struct buffer_share *mix,  in buffer_share_id_offset()  argument
162 	struct id_offset *o = get_id_offset(mix, id);  in buffer_share_id_offset()
166 void *buffer_share_get_data(const struct buffer_share *mix,  in buffer_share_get_data()  argument
169 	struct id_offset *o = get_id_offset(mix, id);  in buffer_share_get_data()