void
evbuffer_commit_read(struct evbuffer *evbuf, ev_ssize_t nBytes)
{
struct evbuffer_overlapped *buf = upcast_evbuffer(evbuf);
struct evbuffer_iovec iov[2];
int n_vec;
EVBUFFER_LOCK(evbuf);
EVUTIL_ASSERT(buf->read_in_progress && !buf->write_in_progress);
EVUTIL_ASSERT(nBytes >= 0); /* XXXX Can this be false? */
evbuffer_unfreeze(evbuf, 0);
iov[0].iov_base = buf->buffers[0].buf;
if ((size_t)nBytes <= buf->buffers[0].len) {
iov[0].iov_len = nBytes;
n_vec = 1;
} else {
iov[0].iov_len = buf->buffers[0].len;
iov[1].iov_base = buf->buffers[1].buf;
iov[1].iov_len = nBytes - iov[0].iov_len;
n_vec = 2;
}
if (evbuffer_commit_space(evbuf, iov, n_vec) < 0)
EVUTIL_ASSERT(0); /* XXXX fail nicer. */
pin_release(buf, EVBUFFER_MEM_PINNED_R);
buf->read_in_progress = 0;
_evbuffer_decref_and_unlock(evbuf);
}
void
evbuffer_commit_write(struct evbuffer *evbuf, ev_ssize_t nBytes)
{
struct evbuffer_overlapped *buf = upcast_evbuffer(evbuf);
EVBUFFER_LOCK(evbuf);
EVUTIL_ASSERT(buf->write_in_progress && !buf->read_in_progress);
evbuffer_unfreeze(evbuf, 1);
evbuffer_drain(evbuf, nBytes);
pin_release(buf,EVBUFFER_MEM_PINNED_W);
buf->write_in_progress = 0;
_evbuffer_decref_and_unlock(evbuf);
}
void
evbuffer_commit_read(struct evbuffer *evbuf, ev_ssize_t nBytes)
{
struct evbuffer_overlapped *buf = upcast_evbuffer(evbuf);
struct evbuffer_chain **chainp;
size_t remaining, len;
unsigned i;
EVBUFFER_LOCK(evbuf);
EVUTIL_ASSERT(buf->read_in_progress && !buf->write_in_progress);
EVUTIL_ASSERT(nBytes >= 0); /* XXXX Can this be false? */
evbuffer_unfreeze(evbuf, 0);
chainp = evbuf->last_with_datap;
if (!((*chainp)->flags & EVBUFFER_MEM_PINNED_R))
chainp = &(*chainp)->next;
remaining = nBytes;
for (i = 0; remaining > 0 && i < (unsigned)buf->n_buffers; ++i) {
EVUTIL_ASSERT(*chainp);
len = buf->buffers[i].len;
if (remaining < len)
len = remaining;
(*chainp)->off += len;
evbuf->last_with_datap = chainp;
remaining -= len;
chainp = &(*chainp)->next;
}
pin_release(buf, EVBUFFER_MEM_PINNED_R);
buf->read_in_progress = 0;
evbuf->total_len += nBytes;
evbuf->n_add_for_cb += nBytes;
evbuffer_invoke_callbacks(evbuf);
_evbuffer_decref_and_unlock(evbuf);
}
