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Added trace log where epoll_wait returns and to where read fomr/write to socket decicion is made.

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This commit is contained in:
vraatikka
2013-08-15 20:16:23 +03:00
parent 90e6e11923
commit a1b05359ac
2 changed files with 62 additions and 17 deletions
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55
server/core/poll.c
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@ -143,6 +143,8 @@ poll_waitevents(void *arg)
struct epoll_event events[MAX_EVENTS];
int i, nfds;
int thread_id = (int)arg;
pthread_t tid = pthread_self();
bool no_op = FALSE;
/* Add this thread to the bitmask of running polling threads */
bitmask_set(&poll_mask, thread_id);
@ -153,31 +155,39 @@ int thread_id = (int)arg;
{
}
#else
if (!no_op) {
skygw_log_write(LOGFILE_TRACE,
"%lu [poll_waitevents] > epoll_wait <",
tid);
no_op = TRUE;
}
if ((nfds = epoll_wait(epoll_fd, events, MAX_EVENTS, 0)) == -1)
{
int eno = errno;
errno = 0;
skygw_log_write(LOGFILE_TRACE,
"epoll_wait returned %d, errno %d",
"%lu [poll_waitevents] epoll_wait returned %d, errno %d",
tid,
nfds,
eno);
no_op = FALSE;
}
else if (nfds == 0)
{
int eno = 0;
if ((nfds = epoll_wait(epoll_fd, events, MAX_EVENTS, EPOLL_TIMEOUT)) == -1)
{
}
eno = errno;
errno = 0;
skygw_log_write(LOGFILE_TRACE,
"After timeout, epoll_wait returned %d, errno %d",
nfds,
eno);
if ((nfds = epoll_wait(epoll_fd, events, MAX_EVENTS, EPOLL_TIMEOUT)) == -1)
{
}
}
#endif
if (nfds > 0)
{
skygw_log_write(
LOGFILE_TRACE,
"%lu [poll_waitevents] epoll_wait found %d fds",
tid,
nfds);
atomic_add(&pollStats.n_polls, 1);
for (i = 0; i < nfds; i++)
{
@ -203,6 +213,10 @@ int thread_id = (int)arg;
}
if (ev & EPOLLOUT)
{
skygw_log_write(LOGFILE_TRACE,
"%lu [poll_waitevents] Write in %d",
tid,
dcb->fd);
atomic_add(&pollStats.n_write, 1);
dcb->func.write_ready(dcb);
}
@ -210,16 +224,27 @@ int thread_id = (int)arg;
{
if (dcb->state == DCB_STATE_LISTENING)
{
atomic_add(&pollStats.n_accept, 1);
dcb->func.accept(dcb);
skygw_log_write(
LOGFILE_TRACE,
"%lu [poll_waitevents] Accept in %d",
tid,
dcb->fd);
atomic_add(&pollStats.n_accept, 1);
dcb->func.accept(dcb);
}
else
{
skygw_log_write(
LOGFILE_TRACE,
"%lu [poll_waitevents] Read in %d",
tid,
dcb->fd);
atomic_add(&pollStats.n_read, 1);
dcb->func.read(dcb);
}
}
}
} /**< for */
no_op = FALSE;
}
dcb_process_zombies(thread_id);
if (shutdown)
@ -228,7 +253,7 @@ int thread_id = (int)arg;
bitmask_clear(&poll_mask, thread_id);
return;
}
}
} /**< while(1) */
}
/**