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* poll.cc (poll): Return count of fds with events instead of total

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event count.
This commit is contained in:
Corinna Vinschen 2007-12-13 10:57:08 +00:00
parent 5642c35aae
commit d1f3668837
2 changed files with 50 additions and 37 deletions
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6
winsup/cygwin/ChangeLog
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@ -1,3 +1,9 @@
2007-12-13 Craig MacGregor <cmacgreg@gmail.com>
Corinna Vinschen <corinna@vinschen.de>
* poll.cc (poll): Return count of fds with events instead of total
event count.
2007-12-13 Corinna Vinschen <corinna@vinschen.de> 2007-12-13 Corinna Vinschen <corinna@vinschen.de>
* string.h: Guard cygwin internal string function definitions with * string.h: Guard cygwin internal string function definitions with

13
winsup/cygwin/poll.cc
View File

@ -1,6 +1,6 @@
/* poll.cc. Implements poll(2) via usage of select(2) call. /* poll.cc. Implements poll(2) via usage of select(2) call.
Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006 Red Hat, Inc. Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Red Hat, Inc.
This file is part of Cygwin. This file is part of Cygwin.
@ -76,9 +76,14 @@ poll (struct pollfd *fds, nfds_t nfds, int timeout)
if (invalid_fds) if (invalid_fds)
return invalid_fds; return invalid_fds;
int ret = cygwin_select (max_fd + 1, read_fds, write_fds, except_fds, timeout < 0 ? NULL : &tv); int ret = cygwin_select (max_fd + 1, read_fds, write_fds, except_fds,
timeout < 0 ? NULL : &tv);
if (ret <= 0)
return ret;
if (ret > 0) /* Set revents fields and count fds with non-zero revents fields for
return value. */
ret = 0;
for (unsigned int i = 0; i < nfds; ++i) for (unsigned int i = 0; i < nfds; ++i)
{ {
if (fds[i].fd >= 0) if (fds[i].fd >= 0)
@ -112,6 +117,8 @@ poll (struct pollfd *fds, nfds_t nfds, int timeout)
fds[i].revents |= POLLPRI; fds[i].revents |= POLLPRI;
} }
} }
if (fds[i].revents)
++ret;
} }
} }