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Add isc_buffer_trycompact() function needed for StreamDNS

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Add isc_buffer_trycompact() that's an optimization; it will compact the
buffer only when the remaining length is smaller than used length.
This commit is contained in:
Ondřej Surý
2022-12-16 11:43:20 +01:00
parent e6062ee3ae
commit 460afcda18
1 changed files with 9 additions and 0 deletions
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9
lib/isc/include/isc/buffer.h
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@@ -265,6 +265,8 @@ isc_buffer_reinit(isc_buffer_t *b, void *base, unsigned int length);
*
*/
static inline void
isc_buffer_trycompact(isc_buffer_t *b);
static inline void
isc_buffer_compact(isc_buffer_t *b);
/*!<
@@ -1043,6 +1045,13 @@ isc_buffer_reinit(isc_buffer_t *b, void *base, unsigned int length) {
b->length = length;
}
static inline void
isc_buffer_trycompact(isc_buffer_t *b) {
if (isc_buffer_consumedlength(b) >= isc_buffer_remaininglength(b)) {
isc_buffer_compact(b);
}
}
static inline void
isc_buffer_compact(isc_buffer_t *b) {
unsigned int length;