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main-loop: disable fd_set-based glib integration under w32 

Using select with glib pollfds is wrong under w32.  Restrict
the code to the POSIX case.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Paolo Bonzini 2012-03-20 10:49:18 +01:00 committed by Blue Swirl
parent 4dae83aeac
commit 15455536df
1 changed files with 33 additions and 30 deletions
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63
main-loop.c
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@ -218,7 +218,10 @@ int main_loop_init(void)
return 0; return 0;
} }
static fd_set rfds, wfds, xfds;
static int nfds;
#ifndef _WIN32
static GPollFD poll_fds[1024 * 2]; /* this is probably overkill */ static GPollFD poll_fds[1024 * 2]; /* this is probably overkill */
static int n_poll_fds; static int n_poll_fds;
static int max_priority; static int max_priority;
@ -286,7 +289,29 @@ static void glib_select_poll(fd_set *rfds, fd_set *wfds, fd_set *xfds,
} }
} }
#ifdef _WIN32 static int os_host_main_loop_wait(int timeout)
{
struct timeval tv;
int ret;
glib_select_fill(&nfds, &rfds, &wfds, &xfds, &timeout);
if (timeout > 0) {
qemu_mutex_unlock_iothread();
}
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
if (timeout > 0) {
qemu_mutex_lock_iothread();
}
glib_select_poll(&rfds, &wfds, &xfds, (ret < 0));
return ret;
}
#else
/***********************************************************/ /***********************************************************/
/* Polling handling */ /* Polling handling */
@ -367,10 +392,11 @@ void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
} }
} }
static void os_host_main_loop_wait(int *timeout) static int os_host_main_loop_wait(int timeout)
{ {
int ret, ret2, i; int ret, ret2, i;
PollingEntry *pe; PollingEntry *pe;
static struct timeval tv0;
/* XXX: need to suppress polling by better using win32 events */ /* XXX: need to suppress polling by better using win32 events */
ret = 0; ret = 0;
@ -382,7 +408,7 @@ static void os_host_main_loop_wait(int *timeout)
WaitObjects *w = &wait_objects; WaitObjects *w = &wait_objects;
qemu_mutex_unlock_iothread(); qemu_mutex_unlock_iothread();
ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout); ret = WaitForMultipleObjects(w->num, w->events, FALSE, timeout);
qemu_mutex_lock_iothread(); qemu_mutex_lock_iothread();
if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) { if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
if (w->func[ret - WAIT_OBJECT_0]) { if (w->func[ret - WAIT_OBJECT_0]) {
@ -408,20 +434,14 @@ static void os_host_main_loop_wait(int *timeout)
} }
} }
*timeout = 0; ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv0);
} return ret;
#else
static inline void os_host_main_loop_wait(int *timeout)
{
} }
#endif #endif
int main_loop_wait(int nonblocking) int main_loop_wait(int nonblocking)
{ {
fd_set rfds, wfds, xfds; int ret, timeout;
int ret, nfds;
struct timeval tv;
int timeout;
if (nonblocking) { if (nonblocking) {
timeout = 0; timeout = 0;
@ -441,24 +461,7 @@ int main_loop_wait(int nonblocking)
slirp_select_fill(&nfds, &rfds, &wfds, &xfds); slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
#endif #endif
qemu_iohandler_fill(&nfds, &rfds, &wfds, &xfds); qemu_iohandler_fill(&nfds, &rfds, &wfds, &xfds);
ret = os_host_main_loop_wait(timeout);
glib_select_fill(&nfds, &rfds, &wfds, &xfds, &timeout);
os_host_main_loop_wait(&timeout);
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
if (timeout > 0) {
qemu_mutex_unlock_iothread();
}
ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
if (timeout > 0) {
qemu_mutex_lock_iothread();
}
glib_select_poll(&rfds, &wfds, &xfds, (ret < 0));
qemu_iohandler_poll(&rfds, &wfds, &xfds, ret); qemu_iohandler_poll(&rfds, &wfds, &xfds, ret);
#ifdef CONFIG_SLIRP #ifdef CONFIG_SLIRP
slirp_select_poll(&rfds, &wfds, &xfds, (ret < 0)); slirp_select_poll(&rfds, &wfds, &xfds, (ret < 0));