commit 8e1b90ecc59573c4c5e9fc4934b4e30476b43e2f
author Jan Kiszka <jan.kiszka@siemens.com> Tue Feb 01 22:15:46 2011 +0100
committer Marcelo Tosatti <mtosatti@redhat.com> Mon Feb 14 12:39:44 2011 -0200
tree 8b242421bcfbfb1aa9f6319ebe6ab649a9e95fda
parent 38145df24c55bffe8ba63cfa28173c9ddd5a2c2d

Leave inner main_loop faster on pending requests

If there is any pending request that requires us to leave the inner loop
if main_loop, makes sure we do this as soon as possible by enforcing
non-blocking IO processing.

At this change, move variable definitions out of the inner loop to
improve readability.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

vl.c

diff --git a/vl.c b/vl.c
index 30263d6..9c628f0 100644
--- a/vl.c
+++ b/vl.c
@@ -1402,18 +1402,21 @@
 
 static void main_loop(void)
 {
+    bool nonblocking = false;
+#ifdef CONFIG_PROFILER
+    int64_t ti;
+#endif
     int r;
 
     qemu_main_loop_start();
 
     for (;;) {
         do {
-            bool nonblocking = false;
-#ifdef CONFIG_PROFILER
-            int64_t ti;
-#endif
 #ifndef CONFIG_IOTHREAD
             nonblocking = cpu_exec_all();
+            if (!vm_can_run()) {
+                nonblocking = true;
+            }
 #endif
 #ifdef CONFIG_PROFILER
             ti = profile_getclock();