static void
poll_poll (EV_P_ ev_tstamp timeout)
{
struct pollfd *p;
int res = poll (polls, pollcnt, (int)ceil (timeout * 1000.));
if (expect_false (res < 0))
{
if (errno == EBADF)
fd_ebadf (EV_A);
else if (errno == ENOMEM && !syserr_cb)
fd_enomem (EV_A);
else if (errno != EINTR)
syserr ("(libev) poll");
}
else
for (p = polls; res; ++p)
if (expect_false (p->revents)) /* this expect is debatable */
{
--res;
if (expect_false (p->revents & POLLNVAL))
fd_kill (EV_A_ p->fd);
else
fd_event (
EV_A_
p->fd,
(p->revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
| (p->revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
);
}
}
static void
poll_poll (EV_P_ ev_tstamp timeout)
{
struct pollfd *p;
int res;
EV_RELEASE_CB;
res = poll (polls, pollcnt, timeout * 1e3);
EV_ACQUIRE_CB;
if (expect_false (res < 0))
{
if (errno == EBADF)
fd_ebadf (EV_A);
else if (errno == ENOMEM && !syserr_cb)
fd_enomem (EV_A);
else if (errno != EINTR)
ev_syserr ("(libev) poll");
}
else
for (p = polls; res; ++p)
{
assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
if (expect_false (p->revents)) /* this expect is debatable */
{
--res;
if (expect_false (p->revents & POLLNVAL))
fd_kill (EV_A_ p->fd);
else
fd_event (
EV_A_
p->fd,
(p->revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
| (p->revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
);
}
}
}
static void
select_poll (EV_P_ ev_tstamp timeout)
{
struct timeval tv;
int res;
#if EV_SELECT_USE_FD_SET
memcpy (vec_ro, vec_ri, sizeof (fd_set));
memcpy (vec_wo, vec_wi, sizeof (fd_set));
#else
memcpy (vec_ro, vec_ri, vec_max * NFDBYTES);
memcpy (vec_wo, vec_wi, vec_max * NFDBYTES);
#endif
tv.tv_sec = (long)timeout;
tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6);
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
if (expect_false (res < 0))
{
#if EV_SELECT_IS_WINSOCKET
errno = WSAGetLastError ();
#endif
#ifdef WSABASEERR
/* on windows, select returns incompatible error codes, fix this */
if (errno >= WSABASEERR && errno < WSABASEERR + 1000)
if (errno == WSAENOTSOCK)
errno = EBADF;
else
errno -= WSABASEERR;
#endif
#ifdef _WIN32
/* select on windows errornously returns EINVAL when no fd sets have been
* provided (this is documented). what microsoft doesn't tell you that this bug
* exists even when the fd sets are provided, so we have to check for this bug
* here and emulate by sleeping manually.
* we also get EINVAL when the timeout is invalid, but we ignore this case here
* and assume that EINVAL always means: you have to wait manually.
*/
if (errno == EINVAL)
{
ev_sleep (timeout);
return;
}
#endif
if (errno == EBADF)
fd_ebadf (EV_A);
else if (errno == ENOMEM && !syserr_cb)
fd_enomem (EV_A);
else if (errno != EINTR)
syserr ("(libev) select");
return;
}
#if EV_SELECT_USE_FD_SET
{
int fd;
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
{
int events = 0;
#if EV_SELECT_IS_WINSOCKET
SOCKET handle = anfds [fd].handle;
#else
int handle = fd;
#endif
if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ;
if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE;
if (expect_true (events))
fd_event (EV_A_ fd, events);
}
}
#else
{
int word, bit;
for (word = vec_max; word--; )
{
fd_mask word_r = ((fd_mask *)vec_ro) [word];
fd_mask word_w = ((fd_mask *)vec_wo) [word];
if (word_r || word_w)
for (bit = NFDBITS; bit--; )
{
fd_mask mask = 1UL << bit;
int events = 0;
events |= word_r & mask ? EV_READ : 0;
events |= word_w & mask ? EV_WRITE : 0;
if (expect_true (events))
fd_event (EV_A_ word * NFDBITS + bit, events);
}
}
}
#endif
}
static void
select_poll (EV_P_ ev_tstamp timeout)
{
struct timeval tv;
int res;
int fd_setsize;
EV_RELEASE_CB;
EV_TV_SET (tv, timeout);
#if EV_SELECT_USE_FD_SET
fd_setsize = sizeof (fd_set);
#else
fd_setsize = vec_max * NFDBYTES;
#endif
memcpy (vec_ro, vec_ri, fd_setsize);
memcpy (vec_wo, vec_wi, fd_setsize);
#ifdef _WIN32
/* pass in the write set as except set.
* the idea behind this is to work around a windows bug that causes
* errors to be reported as an exception and not by setting
* the writable bit. this is so uncontrollably lame.
*/
memcpy (vec_eo, vec_wi, fd_setsize);
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, (fd_set *)vec_eo, &tv);
#elif EV_SELECT_USE_FD_SET
fd_setsize = anfdmax < FD_SETSIZE ? anfdmax : FD_SETSIZE;
res = select (fd_setsize, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
#else
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
#endif
EV_ACQUIRE_CB;
if (expect_false (res < 0))
{
#if EV_SELECT_IS_WINSOCKET
errno = WSAGetLastError ();
#endif
#ifdef WSABASEERR
/* on windows, select returns incompatible error codes, fix this */
if (errno >= WSABASEERR && errno < WSABASEERR + 1000)
if (errno == WSAENOTSOCK)
errno = EBADF;
else
errno -= WSABASEERR;
#endif
#ifdef _WIN32
/* select on windows erroneously returns EINVAL when no fd sets have been
* provided (this is documented). what microsoft doesn't tell you that this bug
* exists even when the fd sets _are_ provided, so we have to check for this bug
* here and emulate by sleeping manually.
* we also get EINVAL when the timeout is invalid, but we ignore this case here
* and assume that EINVAL always means: you have to wait manually.
*/
if (errno == EINVAL)
{
if (timeout)
{
unsigned long ms = timeout * 1e3;
Sleep (ms ? ms : 1);
}
return;
}
#endif
if (errno == EBADF)
fd_ebadf (EV_A);
else if (errno == ENOMEM && !syserr_cb)
fd_enomem (EV_A);
else if (errno != EINTR)
ev_syserr ("(libev) select");
return;
}
#if EV_SELECT_USE_FD_SET
{
int fd;
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
{
int events = 0;
#if EV_SELECT_IS_WINSOCKET
SOCKET handle = anfds [fd].handle;
#else
int handle = fd;
#endif
if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ;
if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE;
#ifdef _WIN32
if (FD_ISSET (handle, (fd_set *)vec_eo)) events |= EV_WRITE;
#endif
if (expect_true (events))
fd_event (EV_A_ fd, events);
}
}
#else
{
int word, bit;
for (word = vec_max; word--; )
{
fd_mask word_r = ((fd_mask *)vec_ro) [word];
fd_mask word_w = ((fd_mask *)vec_wo) [word];
#ifdef _WIN32
word_w |= ((fd_mask *)vec_eo) [word];
#endif
if (word_r || word_w)
for (bit = NFDBITS; bit--; )
{
fd_mask mask = 1UL << bit;
int events = 0;
events |= word_r & mask ? EV_READ : 0;
events |= word_w & mask ? EV_WRITE : 0;
if (expect_true (events))
fd_event (EV_A_ word * NFDBITS + bit, events);
}
}
}
#endif
}
static void
select_poll (EV_P_ ev_tstamp timeout)
{
struct timeval tv;
int res;
#if EV_SELECT_USE_FD_SET
memcpy (vec_ro, vec_ri, sizeof (fd_set));
memcpy (vec_wo, vec_wi, sizeof (fd_set));
#else
memcpy (vec_ro, vec_ri, vec_max * NFDBYTES);
memcpy (vec_wo, vec_wi, vec_max * NFDBYTES);
#endif
tv.tv_sec = (long)timeout;
tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6);
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
if (expect_false (res < 0))
{
#if EV_SELECT_IS_WINSOCKET
errno = WSAGetLastError ();
#endif
if (errno == EBADF)
fd_ebadf (EV_A);
else if (errno == ENOMEM && !syserr_cb)
fd_enomem (EV_A);
else if (errno != EINTR)
syserr ("(libev) select");
return;
}
#if EV_SELECT_USE_FD_SET
{
int fd;
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
{
int events = 0;
#if EV_SELECT_IS_WINSOCKET
SOCKET handle = anfds [fd].handle;
#else
int handle = fd;
#endif
if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ;
if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE;
if (expect_true (events))
fd_event (EV_A_ fd, events);
}
}
#else
{
int word, bit;
for (word = vec_max; word--; )
{
fd_mask word_r = ((fd_mask *)vec_ro) [word];
fd_mask word_w = ((fd_mask *)vec_wo) [word];
if (word_r || word_w)
for (bit = NFDBITS; bit--; )
{
fd_mask mask = 1UL << bit;
int events = 0;
events |= word_r & mask ? EV_READ : 0;
events |= word_w & mask ? EV_WRITE : 0;
if (expect_true (events))
fd_event (EV_A_ word * NFDBITS + bit, events);
}
}
}
#endif
}
static void
select_poll (EV_P_ ev_tstamp timeout)
{
struct timeval tv;
int res;
int fd_setsize;
#ifdef _WIN32
/* POSIX defines the case when the readfds, writefds, and errorfds arguments
* are all null pointers.
* http://pubs.opengroup.org/onlinepubs/9699919799/functions/select.html
*
* But Windows doesn't define such case; simply say don't so that
* https://msdn.microsoft.com/en-us/library/windows/desktop/ms740141(v=vs.85).aspx
* "Any two of the parameters, readfds, writefds, or exceptfds, can be given
* as null. At least one must be non-null, and any non-null descriptor set
* must contain at least one handle to a socket."
* At least on Windows Server 2012 R2 Datacenter with Visual Studio 2013
* (Visual C++ 12), it cause WaitForMultipleObjects stuck.
*/
if (EV_WIN_FD_COUNT(vec_ri) == 0 && EV_WIN_FD_COUNT(vec_wi) == 0)
return;
#endif
EV_RELEASE_CB;
EV_TV_SET (tv, timeout);
#if EV_SELECT_USE_FD_SET
fd_setsize = sizeof (fd_set);
#else
fd_setsize = vec_max * NFDBYTES;
#endif
memcpy (vec_ro, vec_ri, fd_setsize);
memcpy (vec_wo, vec_wi, fd_setsize);
#ifdef _WIN32
/* pass in the write set as except set.
* the idea behind this is to work around a windows bug that causes
* errors to be reported as an exception and not by setting
* the writable bit. this is so uncontrollably lame.
*/
memcpy (vec_eo, vec_wi, fd_setsize);
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, (fd_set *)vec_eo, &tv);
#elif EV_SELECT_USE_FD_SET
fd_setsize = anfdmax < FD_SETSIZE ? anfdmax : FD_SETSIZE;
res = select (fd_setsize, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
#else
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
#endif
EV_ACQUIRE_CB;
if (expect_false (res < 0))
{
#if EV_SELECT_IS_WINSOCKET
errno = WSAGetLastError ();
#endif
#ifdef WSABASEERR
/* on windows, select returns incompatible error codes, fix this */
if (errno >= WSABASEERR && errno < WSABASEERR + 1000)
if (errno == WSAENOTSOCK)
errno = EBADF;
else
errno -= WSABASEERR;
#endif
#ifdef _WIN32
/* select on windows erroneously returns EINVAL when no fd sets have been
* provided (this is documented). what microsoft doesn't tell you that this bug
* exists even when the fd sets _are_ provided, so we have to check for this bug
* here and emulate by sleeping manually.
* we also get EINVAL when the timeout is invalid, but we ignore this case here
* and assume that EINVAL always means: you have to wait manually.
*/
if (errno == EINVAL)
{
if (timeout)
{
unsigned long ms = (unsigned long)(timeout * 1e3);
Sleep (ms ? ms : 1);
}
return;
}
#endif
if (errno == EBADF)
fd_ebadf (EV_A);
else if (errno == ENOMEM && !syserr_cb)
fd_enomem (EV_A);
else if (errno != EINTR)
ev_syserr ("(libev) select");
return;
}
#if EV_SELECT_USE_FD_SET
{
int fd;
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
{
int events = 0;
#if EV_SELECT_IS_WINSOCKET
SOCKET handle = anfds [fd].handle;
#else
int handle = fd;
#endif
if (EV_WIN_FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ;
if (EV_WIN_FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE;
#ifdef _WIN32
if (EV_WIN_FD_ISSET (handle, (fd_set *)vec_eo)) events |= EV_WRITE;
#endif
if (expect_true (events))
fd_event (EV_A_ fd, events);
}
}
#else
{
int word, bit;
for (word = vec_max; word--; )
{
fd_mask word_r = ((fd_mask *)vec_ro) [word];
fd_mask word_w = ((fd_mask *)vec_wo) [word];
#ifdef _WIN32
word_w |= ((fd_mask *)vec_eo) [word];
#endif
if (word_r || word_w)
for (bit = NFDBITS; bit--; )
{
fd_mask mask = 1UL << bit;
int events = 0;
events |= word_r & mask ? EV_READ : 0;
events |= word_w & mask ? EV_WRITE : 0;
if (expect_true (events))
fd_event (EV_A_ word * NFDBITS + bit, events);
}
}
}
#endif
}
static void
select_poll (EV_P_ ev_tstamp timeout)
{
struct timeval tv;
int res;
int fd_setsize;
EV_RELEASE_CB;
tv.tv_sec = (long)timeout;
tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6);
#if EV_SELECT_USE_FD_SET
fd_setsize = sizeof (fd_set);
#else
fd_setsize = vec_max * NFDBYTES;
#endif
SXEE6("select_poll(timeout=%f)", timeout);
memcpy (vec_ro, vec_ri, fd_setsize);
memcpy (vec_wo, vec_wi, fd_setsize);
#ifdef _WIN32
SXEL6("Using select() on Windows");
/* pass in the write set as except set.
* the idea behind this is to work around a windows bug that causes
* errors to be reported as an exception and not by setting
* the writable bit. this is so uncontrollably lame.
*/
memcpy (vec_eo, vec_wi, fd_setsize);
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, (fd_set *)vec_eo, &tv);
#elif EV_SELECT_USE_FD_SET
SXEL6("Using select() with fd_set...");
fd_setsize = anfdmax < FD_SETSIZE ? anfdmax : FD_SETSIZE;
res = select (fd_setsize, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
#else
SXEL6("Using select() without fd_set...");
res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
#endif
EV_ACQUIRE_CB;
if (expect_false (res < 0))
{
SXEL6("expect_false (res < 0) // res=%d", res);
#if EV_SELECT_IS_WINSOCKET
errno = WSAGetLastError ();
SXEL6("errno=%d", errno);
#endif
#ifdef WSABASEERR
/* on windows, select returns incompatible error codes, fix this */
if (errno >= WSABASEERR && errno < WSABASEERR + 1000)
if (errno == WSAENOTSOCK)
errno = EBADF;
else
errno -= WSABASEERR;
SXEL6("errno=%d // after fixing error code", errno);
#endif
#ifdef _WIN32
/* select on windows errornously returns EINVAL when no fd sets have been
* provided (this is documented). what microsoft doesn't tell you that this bug
* exists even when the fd sets _are_ provided, so we have to check for this bug
* here and emulate by sleeping manually.
* we also get EINVAL when the timeout is invalid, but we ignore this case here
* and assume that EINVAL always means: you have to wait manually.
*/
if (errno == EINVAL)
{
SXEL6("ev_sleep(timeout=%f)", timeout);
ev_sleep (timeout);
SXER6("return // errno == EINVAL");
return;
}
#endif
if (errno == EBADF)
fd_ebadf (EV_A);
else if (errno == ENOMEM && !syserr_cb)
fd_enomem (EV_A);
else if (errno != EINTR) {
SXEL1("select_poll(): errno=%d // note: 93? have you called sxe_socket_init()?", errno);
ev_syserr ("(libev) select");
}
SXER6("return // expect_false (res < 0)");
return;
}
#if EV_SELECT_USE_FD_SET
{
int fd;
SXEL6("#if EV_SELECT_USE_FD_SET");
for (fd = 0; fd < anfdmax; ++fd)
if (anfds [fd].events)
{
int events = 0;
#if EV_SELECT_IS_WINSOCKET
SOCKET handle = anfds [fd].handle;
#else
int handle = fd;
#endif
if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ;
if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE;
#ifdef _WIN32
if (FD_ISSET (handle, (fd_set *)vec_eo)) events |= EV_WRITE;
#endif
if (expect_true (events))
fd_event (EV_A_ fd, events);
}
SXEL6("#endif // EV_SELECT_USE_FD_SET");
}
#else
{
int word, bit;
SXEL6("#if *not* EV_SELECT_USE_FD_SET");
for (word = vec_max; word--; )
{
fd_mask word_r = ((fd_mask *)vec_ro) [word];
fd_mask word_w = ((fd_mask *)vec_wo) [word];
#ifdef _WIN32
word_w |= ((fd_mask *)vec_eo) [word];
#endif
if (word_r || word_w)
for (bit = NFDBITS; bit--; )
{
fd_mask mask = 1UL << bit;
int events = 0;
events |= word_r & mask ? EV_READ : 0;
events |= word_w & mask ? EV_WRITE : 0;
if (expect_true (events))
fd_event (EV_A_ word * NFDBITS + bit, events);
}
}
SXEL6("#endif // *not* EV_SELECT_USE_FD_SET");
}
#endif
SXER6("return");
}
