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authorPaolo Bonzini <pbonzini@redhat.com>2012-03-20 10:49:20 +0100
committerBlue Swirl <blauwirbel@gmail.com>2012-04-07 08:34:17 +0000
commit06ac7d49797daf8a5c05c7d25db0b205efda8e30 (patch)
tree80a0cc976b4f73d6a677f27323fd047953a02552 /main-loop.c
parentd3385eb448e38f828c78f8f68ec5d79c66a58b5d (diff)
downloadqemu-arm-06ac7d49797daf8a5c05c7d25db0b205efda8e30.tar.gz
main-loop: replace WaitForMultipleObjects with g_poll
On w32, glib implements g_poll using WaitForMultipleObjects or MsgWaitForMultipleObjects. This means that we can simplify our code by switching to g_poll, and at the same time prepare for adding back glib sources. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'main-loop.c')
-rw-r--r--main-loop.c40
1 files changed, 17 insertions, 23 deletions
diff --git a/main-loop.c b/main-loop.c
index 7364074c56..4d02568ee9 100644
--- a/main-loop.c
+++ b/main-loop.c
@@ -220,9 +220,9 @@ int main_loop_init(void)
static fd_set rfds, wfds, xfds;
static int nfds;
+static GPollFD poll_fds[1024 * 2]; /* this is probably overkill */
#ifndef _WIN32
-static GPollFD poll_fds[1024 * 2]; /* this is probably overkill */
static int n_poll_fds;
static int max_priority;
@@ -351,6 +351,7 @@ void qemu_del_polling_cb(PollingFunc *func, void *opaque)
/* Wait objects support */
typedef struct WaitObjects {
int num;
+ int revents[MAXIMUM_WAIT_OBJECTS + 1];
HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1];
void *opaque[MAXIMUM_WAIT_OBJECTS + 1];
@@ -367,6 +368,7 @@ int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
w->events[w->num] = handle;
w->func[w->num] = func;
w->opaque[w->num] = opaque;
+ w->revents[w->num] = 0;
w->num++;
return 0;
}
@@ -385,6 +387,7 @@ void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
w->events[i] = w->events[i + 1];
w->func[i] = w->func[i + 1];
w->opaque[i] = w->opaque[i + 1];
+ w->revents[i] = w->revents[i + 1];
}
}
if (found) {
@@ -400,9 +403,8 @@ void qemu_fd_register(int fd)
static int os_host_main_loop_wait(int timeout)
{
- int ret, ret2, i;
+ int ret, i;
PollingEntry *pe;
- int err;
WaitObjects *w = &wait_objects;
static struct timeval tv0;
@@ -422,33 +424,25 @@ static int os_host_main_loop_wait(int timeout)
}
}
+ for (i = 0; i < w->num; i++) {
+ poll_fds[i].fd = (DWORD) w->events[i];
+ poll_fds[i].events = G_IO_IN;
+ }
+
qemu_mutex_unlock_iothread();
- ret = WaitForMultipleObjects(w->num, w->events, FALSE, timeout);
+ ret = g_poll(poll_fds, w->num, timeout);
qemu_mutex_lock_iothread();
- if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
- if (w->func[ret - WAIT_OBJECT_0]) {
- w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
+ if (ret > 0) {
+ for (i = 0; i < w->num; i++) {
+ w->revents[i] = poll_fds[i].revents;
}
-
- /* Check for additional signaled events */
- for (i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
- /* Check if event is signaled */
- ret2 = WaitForSingleObject(w->events[i], 0);
- if (ret2 == WAIT_OBJECT_0) {
- if (w->func[i]) {
- w->func[i](w->opaque[i]);
- }
- } else if (ret2 != WAIT_TIMEOUT) {
- err = GetLastError();
- fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
+ for (i = 0; i < w->num; i++) {
+ if (w->revents[i] && w->func[i]) {
+ w->func[i](w->opaque[i]);
}
}
- } else if (ret != WAIT_TIMEOUT) {
- err = GetLastError();
- fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
}
-
/* If an edge-triggered socket event occurred, select will return a
* positive result on the next iteration. We do not need to do anything
* here.