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MXS-2860: Extract socket error only when needed

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As the process of extracting the socket error also resets it, it should be
done only when necessary.
This commit is contained in:
Markus Mäkelä
2020-03-06 13:56:42 +02:00
parent 318a81121b
commit eb0432b7b2
2 changed files with 10 additions and 76 deletions
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56
server/core/dcb.cc
View File

@ -2657,30 +2657,12 @@ static uint32_t dcb_process_poll_events(DCB* dcb, uint32_t events)
if ((events & EPOLLOUT) && (dcb->n_close == 0))
{
int eno = 0;
eno = gw_getsockerrno(dcb->fd);
rc |= MXB_POLL_WRITE;
if (eno == 0)
if (dcb_session_check(dcb, "write_ready"))
{
rc |= MXB_POLL_WRITE;
if (dcb_session_check(dcb, "write_ready"))
{
DCB_EH_NOTICE("Calling dcb->func.write_ready(%p)", dcb);
dcb->func.write_ready(dcb);
}
}
else
{
char errbuf[MXS_STRERROR_BUFLEN];
MXS_DEBUG("%lu [poll_waitevents] "
"EPOLLOUT due %d, %s. "
"dcb %p, fd %i",
pthread_self(),
eno,
strerror_r(eno, errbuf, sizeof(errbuf)),
dcb,
dcb->fd);
DCB_EH_NOTICE("Calling dcb->func.write_ready(%p)", dcb);
dcb->func.write_ready(dcb);
}
}
if ((events & EPOLLIN) && (dcb->n_close == 0))
@ -2712,16 +2694,6 @@ static uint32_t dcb_process_poll_events(DCB* dcb, uint32_t events)
}
if ((events & EPOLLERR) && (dcb->n_close == 0))
{
int eno = gw_getsockerrno(dcb->fd);
if (eno != 0)
{
char errbuf[MXS_STRERROR_BUFLEN];
MXS_DEBUG("%lu [poll_waitevents] "
"EPOLLERR due %d, %s.",
pthread_self(),
eno,
strerror_r(eno, errbuf, sizeof(errbuf)));
}
rc |= MXB_POLL_ERROR;
if (dcb_session_check(dcb, "error"))
@ -2733,16 +2705,6 @@ static uint32_t dcb_process_poll_events(DCB* dcb, uint32_t events)
if ((events & EPOLLHUP) && (dcb->n_close == 0))
{
MXB_AT_DEBUG(int eno = gw_getsockerrno(dcb->fd));
MXB_AT_DEBUG(char errbuf[MXS_STRERROR_BUFLEN]);
MXS_DEBUG("%lu [poll_waitevents] "
"EPOLLHUP on dcb %p, fd %d. "
"Errno %d, %s.",
pthread_self(),
dcb,
dcb->fd,
eno,
strerror_r(eno, errbuf, sizeof(errbuf)));
rc |= MXB_POLL_HUP;
if (!dcb->dcb_errhandle_called)
@ -2760,16 +2722,6 @@ static uint32_t dcb_process_poll_events(DCB* dcb, uint32_t events)
#ifdef EPOLLRDHUP
if ((events & EPOLLRDHUP) && (dcb->n_close == 0))
{
MXB_AT_DEBUG(int eno = gw_getsockerrno(dcb->fd));
MXB_AT_DEBUG(char errbuf[MXS_STRERROR_BUFLEN]);
MXS_DEBUG("%lu [poll_waitevents] "
"EPOLLRDHUP on dcb %p, fd %d. "
"Errno %d, %s.",
pthread_self(),
dcb,
dcb->fd,
eno,
strerror_r(eno, errbuf, sizeof(errbuf)));
rc |= MXB_POLL_HUP;
if (!dcb->dcb_errhandle_called)