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[serialize] Support zerocopy while sharing

This commit is contained in:
Behdad Esfahbod 2022-12-03 13:03:38 -07:00
parent 44a5de3a97
commit 071a2bb4f7
1 changed files with 3 additions and 6 deletions
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9
src/hb-serialize.hh
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@ -348,8 +348,8 @@ struct hb_serialize_context_t
assert (obj->head <= obj->tail); assert (obj->head <= obj->tail);
unsigned len = obj->tail - obj->head; unsigned len = obj->tail - obj->head;
head = zerocopy ? zerocopy : obj->head; /* Rewind head. */ head = zerocopy ? zerocopy : obj->head; /* Rewind head. */
if (zerocopy) bool was_zerocopy = zerocopy;
assert (!share); zerocopy = nullptr;
if (!len) if (!len)
{ {
@ -373,11 +373,8 @@ struct hb_serialize_context_t
} }
tail -= len; tail -= len;
if (zerocopy) if (was_zerocopy)
{
zerocopy = nullptr;
assert (tail == obj->head); assert (tail == obj->head);
}
else else
memmove (tail, obj->head, len); memmove (tail, obj->head, len);