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increase segment refcnt only if evbuffer_add_file_segment() succeeds

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This commit is contained in:
yuangongji 2020-02-29 17:47:47 +08:00
parent 4da9f87ccb
commit 114b383675
1 changed files with 4 additions and 2 deletions
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6
buffer.c
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@ -3226,7 +3226,6 @@ evbuffer_add_file_segment(struct evbuffer *buf,
}
}
}
++seg->refcnt;
EVLOCK_UNLOCK(seg->lock, 0);
if (buf->freeze_end)
@ -3290,6 +3289,9 @@ evbuffer_add_file_segment(struct evbuffer *buf,
chain->off = length;
}
EVLOCK_LOCK(seg->lock, 0);
++seg->refcnt;
EVLOCK_UNLOCK(seg->lock, 0);
extra->segment = seg;
buf->n_add_for_cb += length;
evbuffer_chain_insert(buf, chain);
@ -3316,7 +3318,7 @@ evbuffer_add_file(struct evbuffer *buf, int fd, ev_off_t offset, ev_off_t length
if (!seg)
return -1;
r = evbuffer_add_file_segment(buf, seg, 0, length);
if (r == -1)
if (r == 0)
evbuffer_file_segment_free(seg);
return r;
}