37 UNUSED static void fifo_clear(fifo_t * f)  in fifo_clear()  argument
39   f->end = f->begin = 0;  in fifo_clear()
42 UNUSED static void * fifo_reserve(fifo_t * f, FIFO_SIZE_T n)  in fifo_reserve()  argument
44   n *= f->item_size;  in fifo_reserve()
46   if (f->begin == f->end)  in fifo_reserve()
47     fifo_clear(f);  in fifo_reserve()
50     if (f->end + n <= f->allocation) {  in fifo_reserve()
51       void *p = f->data + f->end;  in fifo_reserve()
53       f->end += n;  in fifo_reserve()
56     if (f->begin > FIFO_MIN) {  in fifo_reserve()
57       memmove(f->data, f->data + f->begin, f->end - f->begin);  in fifo_reserve()
58       f->end -= f->begin;  in fifo_reserve()
59       f->begin = 0;  in fifo_reserve()
62     f->allocation += n;  in fifo_reserve()
63     f->data = lsx_realloc(f->data, f->allocation);  in fifo_reserve()
67 UNUSED static void * fifo_write(fifo_t * f, FIFO_SIZE_T n, void const * data)  in fifo_write()  argument
69   void * s = fifo_reserve(f, n);  in fifo_write()
71     memcpy(s, data, n * f->item_size);  in fifo_write()
75 UNUSED static void fifo_trim_to(fifo_t * f, FIFO_SIZE_T n)  in fifo_trim_to()  argument
77   n *= f->item_size;  in fifo_trim_to()
78   f->end = f->begin + n;  in fifo_trim_to()
81 UNUSED static void fifo_trim_by(fifo_t * f, FIFO_SIZE_T n)  in fifo_trim_by()  argument
83   n *= f->item_size;  in fifo_trim_by()
84   f->end -= n;  in fifo_trim_by()
87 UNUSED static FIFO_SIZE_T fifo_occupancy(fifo_t * f)  in fifo_occupancy()  argument
89   return (f->end - f->begin) / f->item_size;  in fifo_occupancy()
92 UNUSED static void * fifo_read(fifo_t * f, FIFO_SIZE_T n, void * data)  in fifo_read()  argument
94   char * ret = f->data + f->begin;  in fifo_read()
95   n *= f->item_size;  in fifo_read()
96   if (n > (FIFO_SIZE_T)(f->end - f->begin))  in fifo_read()
100   f->begin += n;  in fifo_read()
104 #define fifo_read_ptr(f) fifo_read(f, (FIFO_SIZE_T)0, NULL)  argument
106 UNUSED static void fifo_delete(fifo_t * f)  in fifo_delete()  argument
108   free(f->data);  in fifo_delete()
111 UNUSED static void fifo_create(fifo_t * f, FIFO_SIZE_T item_size)  in fifo_create()  argument
113   f->item_size = item_size;  in fifo_create()
114   f->allocation = FIFO_MIN;  in fifo_create()
115   f->data = lsx_malloc(f->allocation);  in fifo_create()
116   fifo_clear(f);  in fifo_create()