diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2001-10-17 22:52:06 +0400 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2001-10-17 22:52:06 +0400 |
| commit | e34027611aee68eb3e2467db874137f22ba5c204 (patch) | |
| tree | 8af7b7a6d7d65a7a8f54d5fc0c648d265e1f3ebb | |
| parent | c711831918b5b066e41aae33c2f043c05d8805e9 (diff) | |
Patch from Frederic Devernay <Frederic.Devernay@sophia.inria.fr>:
* poll.cc (poll): Call cygwin_select() if any fd is valid.
| -rw-r--r-- | winsup/cygwin/ChangeLog | 4 | ||||
| -rw-r--r-- | winsup/cygwin/poll.cc | 15 |
2 files changed, 11 insertions, 8 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog index 93e70cef3..15f55fa2c 100644 --- a/winsup/cygwin/ChangeLog +++ b/winsup/cygwin/ChangeLog @@ -1,3 +1,7 @@ +2001-10-16 Frederic Devernay <Frederic.Devernay@sophia.inria.fr> + + * poll.cc (poll): Call cygwin_select() if any fd is valid. + 2001-10-16 Corinna Vinschen <corinna@vinschen.de> * fhandler_raw.cc (fhandler_dev_raw::open): Eliminate compatibility diff --git a/winsup/cygwin/poll.cc b/winsup/cygwin/poll.cc index ce28d0554..017d0e529 100644 --- a/winsup/cygwin/poll.cc +++ b/winsup/cygwin/poll.cc @@ -51,10 +51,12 @@ poll (struct pollfd *fds, unsigned int nfds, int timeout) memset (write_fds, 0, fds_size); memset (except_fds, 0, fds_size); - bool invalid_fds = false; + bool valid_fds = false; for (unsigned int i = 0; i < nfds; ++i) if (!cygheap->fdtab.not_open (fds[i].fd)) { + valid_fds = true; + fds[i].revents = 0; FD_SET (fds[i].fd, open_fds); if (fds[i].events & POLLIN) FD_SET (fds[i].fd, read_fds); @@ -64,20 +66,17 @@ poll (struct pollfd *fds, unsigned int nfds, int timeout) FD_SET (fds[i].fd, except_fds); } else - invalid_fds = true; + fds[i].revents = POLLNVAL; int ret = 0; - if (!invalid_fds) + if (valid_fds) ret = cygwin_select (max_fd + 1, read_fds, write_fds, except_fds, timeout < 0 ? NULL : &tv); for (unsigned int i = 0; i < nfds; ++i) { - if (!FD_ISSET (fds[i].fd, open_fds)) - { - fds[i].revents = POLLNVAL; - ret++; - } + if (fds[i].revents == POLLNVAL && ret >= 0) + ret++; else if (cygheap->fdtab.not_open(fds[i].fd)) fds[i].revents = POLLHUP; else if (ret < 0) |