1 /*
2 * Copyright (c) 2009-2022, Google LLC
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Google LLC nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "upb/reflection/desc_state_internal.h"
29
30 // Must be last.
31 #include "upb/port/def.inc"
32
_upb_DescState_Grow(upb_DescState * d,upb_Arena * a)33 bool _upb_DescState_Grow(upb_DescState* d, upb_Arena* a) {
34 const size_t oldbufsize = d->bufsize;
35 const int used = d->ptr - d->buf;
36
37 if (!d->buf) {
38 d->buf = upb_Arena_Malloc(a, d->bufsize);
39 if (!d->buf) return false;
40 d->ptr = d->buf;
41 d->e.end = d->buf + d->bufsize;
42 }
43
44 if (oldbufsize - used < kUpb_MtDataEncoder_MinSize) {
45 d->bufsize *= 2;
46 d->buf = upb_Arena_Realloc(a, d->buf, oldbufsize, d->bufsize);
47 if (!d->buf) return false;
48 d->ptr = d->buf + used;
49 d->e.end = d->buf + d->bufsize;
50 }
51
52 return true;
53 }
54