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compat: poll: work around event loss on WIN32

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Signed-off-by: Steve Lhomme <robux4@videolabs.io>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
(cherry picked from commit 3e0d833a3f)
Signed-off-by: Thomas Guillem <thomas@gllm.fr>
This commit is contained in:
Thomas Guillem 2018-02-22 10:15:17 +01:00
parent 7e6f3f45de
commit 776c8d73fb
1 changed files with 18 additions and 1 deletions
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19
compat/poll.c
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@ -109,7 +109,7 @@ int (poll) (struct pollfd *fds, unsigned nfds, int timeout)
# include <windows.h>
# include <winsock2.h>
int poll(struct pollfd *fds, unsigned nfds, int timeout)
static int poll_compat(struct pollfd *fds, unsigned nfds, int timeout)
{
DWORD to = (timeout >= 0) ? (DWORD)timeout : INFINITE;
@ -251,4 +251,21 @@ int poll(struct pollfd *fds, unsigned nfds, int timeout)
}
return count;
}
int poll(struct pollfd *fds, unsigned nfds, int timeout)
{
if (timeout == -1)
{
/* HACK: In some cases, we lose some events because events are
* destroyed and recreated only when we need to poll. In order to work
* arround this issue, we try to call the poll compat function every
* 100ms (in case of infinite timeout). */
int ret;
while ((ret = poll_compat(fds, nfds, 100)) == 0);
return ret;
}
else
return poll_compat(fds, nfds, timeout);
}
#endif