[Qemu-commits] [COMMIT 84b8bd7] qemu: introduce lock/unlock_iothread (Marcelo Tosatti)

[Anthony Liguori]

From: aliguori <address@hidden>

Hook to allow iothread to drop the global mutex.

Signed-off-by: Marcelo Tosatti <address@hidden>
Signed-off-by: Anthony Liguori <address@hidden>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/address@hidden 
c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/vl.c b/vl.c
index 92f3014..63aeb23 100644
--- a/vl.c
+++ b/vl.c
@@ -3750,6 +3750,9 @@ void qemu_cpu_kick(void *env)
     return;
 }
 
+#define qemu_mutex_lock_iothread() do { } while (0)
+#define qemu_mutex_unlock_iothread() do { } while (0)
+
 #ifdef _WIN32
 static void host_main_loop_wait(int *timeout)
 {
@@ -3842,7 +3845,9 @@ void main_loop_wait(int timeout)
         slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
     }
 #endif
+    qemu_mutex_unlock_iothread();
     ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
+    qemu_mutex_lock_iothread();
     if (ret > 0) {
         IOHandlerRecord **pioh;