//
// Make sure the buf has enough bytes for whatever you're up to.
int
cf_buf_builder_reserve_internal(cf_buf_builder **bb_r, size_t sz)
{
cf_buf_builder *bb = *bb_r;
// see if we need more space
size_t new_sz = cf_dyn_buf_get_newsize(bb->alloc_sz, bb->used_sz, sz);
if (new_sz > bb->alloc_sz) {
if (bb->alloc_sz - bb->used_sz < MAX_BACKOFF) {
bb = cf_realloc(bb, new_sz);
if (!bb) return(-1);
}
else {
// Only possible if buffer was reset. Avoids potential expensive
// copy within realloc.
cf_buf_builder *_t = cf_malloc(new_sz);
if (!_t) return(-1);
memcpy(_t->buf, bb->buf, bb->used_sz);
_t->used_sz = bb->used_sz;
cf_free(bb);
bb = _t;
}
bb->alloc_sz = new_sz - sizeof(cf_buf_builder);
*bb_r = bb;
}
return(0);
}
//
// Make sure the buf has enough bytes for whatever you're up to.
int
cf_buf_builder_reserve_internal(cf_buf_builder **bb_r, size_t sz)
{
cf_buf_builder *bb = *bb_r;
// see if we need more space
size_t new_sz = cf_dyn_buf_get_newsize(bb->alloc_sz, bb->used_sz, sz);
if (new_sz > bb->alloc_sz) {
bb = cf_realloc(bb, new_sz);
if (!bb) return(-1);
bb->alloc_sz = new_sz - sizeof(cf_buf_builder);
*bb_r = bb;
}
return(0);
}
//
// Make sure the buf has enough bytes for whatever you're up to.
int
cf_dyn_buf_reserve_internal(cf_dyn_buf *db, size_t sz)
{
// see if we need more space
size_t new_sz = cf_dyn_buf_get_newsize(db->alloc_sz, db->used_sz, sz);
if (new_sz > db->alloc_sz) {
uint8_t *_t;
if (db->is_stack) {
_t = cf_malloc(new_sz);
if (!_t) return(-1);
memcpy(_t, db->buf, db->used_sz);
db->is_stack = false;
db->buf = _t;
}
else {
_t = cf_realloc(db->buf, new_sz);
if (!_t) return(-1);
db->buf = _t;
}
db->alloc_sz = new_sz;
}
return(0);
}
