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authorStefan Hajnoczi <stefanha@redhat.com>2013-05-16 17:36:01 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2013-05-16 14:18:47 -0500
commit3cb8c205e36531a07dff1d8414c9e2cbf04c980b (patch)
tree9ae5baaf26a562a38cd252d3f2f088f5173db095 /main-loop.c
parent8db165b36ef893ac69af0452f20eeb78e7b26b5a (diff)
downloadqemu-arm-3cb8c205e36531a07dff1d8414c9e2cbf04c980b.tar.gz
main-loop: partial revert of 5e3bc73
This patch reverts part of 5e3bc735d93dd23f074b5116fd11e1ad8cd4962f. Paolo Bonzini wrote this patch and commented: "WSAEventSelect is edge-triggered and the event will not be signaled if the socket handler does not consume all the data in the socket buffer." Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1368718561-7816-3-git-send-email-stefanha@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'main-loop.c')
-rw-r--r--main-loop.c32
1 files changed, 14 insertions, 18 deletions
diff --git a/main-loop.c b/main-loop.c
index 2b8eed7311..cf36645af4 100644
--- a/main-loop.c
+++ b/main-loop.c
@@ -394,6 +394,20 @@ static int os_host_main_loop_wait(uint32_t timeout)
return ret;
}
+ FD_ZERO(&rfds);
+ FD_ZERO(&wfds);
+ FD_ZERO(&xfds);
+ nfds = pollfds_fill(gpollfds, &rfds, &wfds, &xfds);
+ if (nfds >= 0) {
+ select_ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv0);
+ if (select_ret != 0) {
+ timeout = 0;
+ }
+ if (select_ret > 0) {
+ pollfds_poll(gpollfds, nfds, &rfds, &wfds, &xfds);
+ }
+ }
+
g_main_context_prepare(context, &max_priority);
n_poll_fds = g_main_context_query(context, max_priority, &poll_timeout,
poll_fds, ARRAY_SIZE(poll_fds));
@@ -426,24 +440,6 @@ static int os_host_main_loop_wait(uint32_t timeout)
g_main_context_dispatch(context);
}
- /* Call select after g_poll to avoid a useless iteration and therefore
- * improve socket latency.
- */
-
- FD_ZERO(&rfds);
- FD_ZERO(&wfds);
- FD_ZERO(&xfds);
- nfds = pollfds_fill(gpollfds, &rfds, &wfds, &xfds);
- if (nfds >= 0) {
- select_ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv0);
- if (select_ret != 0) {
- timeout = 0;
- }
- if (select_ret > 0) {
- pollfds_poll(gpollfds, nfds, &rfds, &wfds, &xfds);
- }
- }
-
return select_ret || g_poll_ret;
}
#endif