[Qemu-devel] [7236] qemu: create helper for event notification (Marcelo Tosatti)

[Qemu-devel] [7236] qemu: create helper for event notification (Marcelo Tosatti)

[Anthony Liguori]

Revision: 7236
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=7236
Author:   aliguori
Date:     2009-04-24 18:03:11 +0000 (Fri, 24 Apr 2009)
Log Message:
-----------
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>

Modified Paths:
--------------
    trunk/hw/mac_dbdma.c
    trunk/qemu-common.h
    trunk/vl.c

Modified: trunk/hw/mac_dbdma.c
===================================================================
--- trunk/hw/mac_dbdma.c	2009-04-23 18:42:30 UTC (rev 7235)
+++ trunk/hw/mac_dbdma.c	2009-04-24 18:03:11 UTC (rev 7236)
@@ -651,9 +651,7 @@
 
 void DBDMA_schedule(void)
 {
-    CPUState *env = cpu_single_env;
-    if (env)
-        cpu_exit(env);
+    qemu_notify_event();
 }
 
 static void

Modified: trunk/qemu-common.h
===================================================================
--- trunk/qemu-common.h	2009-04-23 18:42:30 UTC (rev 7235)
+++ trunk/qemu-common.h	2009-04-24 18:03:11 UTC (rev 7236)
@@ -186,6 +186,9 @@
 /* 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;

Modified: trunk/vl.c
===================================================================
--- trunk/vl.c	2009-04-23 18:42:30 UTC (rev 7235)
+++ trunk/vl.c	2009-04-24 18:03:11 UTC (rev 7236)
@@ -1193,9 +1193,8 @@
             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 @@
 #endif
         }
         event_pending = 1;
+        qemu_notify_event();
     }
 }
 
@@ -3406,15 +3406,7 @@
 
 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(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)
@@ -3701,24 +3690,34 @@
     } 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
 static void host_main_loop_wait(int *timeout)
 {