From d9f75a4eb449c96dd47731a4d6f1619f3c23b5e7 Mon Sep 17 00:00:00 2001
From: aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Fri, 24 Apr 2009 18:03:11 +0000
Subject: [PATCH] qemu: create helper for event notification (Marcelo Tosatti)

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7236 c046a42c-6fe2-441c-8c8c-71466251a162
---
 hw/mac_dbdma.c |  4 +---
 qemu-common.h  |  3 +++
 vl.c           | 43 +++++++++++++++++++++----------------------
 3 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/hw/mac_dbdma.c b/hw/mac_dbdma.c
index b8e4b128d4..e863980d9c 100644
--- a/hw/mac_dbdma.c
+++ b/hw/mac_dbdma.c
@@ -651,9 +651,7 @@ void DBDMA_register_channel(void *dbdma, int nchan, qemu_irq irq,
 
 void DBDMA_schedule(void)
 {
-    CPUState *env = cpu_single_env;
-    if (env)
-        cpu_exit(env);
+    qemu_notify_event();
 }
 
 static void
diff --git a/qemu-common.h b/qemu-common.h
index c10043db7b..ee963c11de 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -186,6 +186,9 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id);
 /* Force QEMU to stop what it's doing and service IO */
 void qemu_service_io(void);
 
+/* Force QEMU to process pending events */
+void qemu_notify_event(void);
+
 typedef struct QEMUIOVector {
     struct iovec *iov;
     int niov;
diff --git a/vl.c b/vl.c
index 05e760cfd5..437f41af37 100644
--- a/vl.c
+++ b/vl.c
@@ -1193,9 +1193,8 @@ void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
             qemu_rearm_alarm_timer(alarm_timer);
         }
         /* Interrupt execution to force deadline recalculation.  */
-        if (use_icount && cpu_single_env) {
-            cpu_exit(cpu_single_env);
-        }
+        if (use_icount)
+            qemu_notify_event();
     }
 }
 
@@ -1370,6 +1369,7 @@ static void host_alarm_handler(int host_signum)
 #endif
         }
         event_pending = 1;
+        qemu_notify_event();
     }
 }
 
@@ -3406,15 +3406,7 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id)
 
 void qemu_service_io(void)
 {
-    CPUState *env = cpu_single_env;
-    if (env) {
-        cpu_exit(env);
-#ifdef CONFIG_KQEMU
-        if (env->kqemu_enabled) {
-            kqemu_cpu_interrupt(env);
-        }
-#endif
-    }
+    qemu_notify_event();
 }
 
 /***********************************************************/
@@ -3482,15 +3474,12 @@ void qemu_bh_schedule_idle(QEMUBH *bh)
 
 void qemu_bh_schedule(QEMUBH *bh)
 {
-    CPUState *env = cpu_single_env;
     if (bh->scheduled)
         return;
     bh->scheduled = 1;
     bh->idle = 0;
     /* stop the currently executing CPU to execute the BH ASAP */
-    if (env) {
-        cpu_exit(env);
-    }
+    qemu_notify_event();
 }
 
 void qemu_bh_cancel(QEMUBH *bh)
@@ -3701,22 +3690,32 @@ void qemu_system_reset_request(void)
     } else {
         reset_requested = 1;
     }
-    if (cpu_single_env)
-        cpu_exit(cpu_single_env);
+    qemu_notify_event();
 }
 
 void qemu_system_shutdown_request(void)
 {
     shutdown_requested = 1;
-    if (cpu_single_env)
-        cpu_exit(cpu_single_env);
+    qemu_notify_event();
 }
 
 void qemu_system_powerdown_request(void)
 {
     powerdown_requested = 1;
-    if (cpu_single_env)
-        cpu_exit(cpu_single_env);
+    qemu_notify_event();
+}
+
+void qemu_notify_event(void)
+{
+    CPUState *env = cpu_single_env;
+
+    if (env) {
+        cpu_exit(env);
+#ifdef USE_KQEMU
+        if (env->kqemu_enabled)
+            kqemu_cpu_interrupt(env);
+#endif
+     }
 }
 
 #ifdef _WIN32
-- 
2.11.0