mini-os: Notify shutdown through weak function call instead of wake queue

To allow for more flexibility, this notifies domain shutdown through a
function rather than a wake queue, to let the application use a wake
queue only if it wishes.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Committed-by: Keir Fraser <keir@xen.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/extras/mini-os/test.c b/extras/mini-os/test.c
index 95e2d697f8..0f348d2aac 100644
--- a/extras/mini-os/test.c
+++ b/extras/mini-os/test.c
@@ -45,6 +45,10 @@
 #include <xen/features.h>
 #include <xen/version.h>
 
+static unsigned int do_shutdown = 0;
+static unsigned int shutdown_reason;
+static DECLARE_WAIT_QUEUE_HEAD(shutdown_queue);
+
 static struct netfront_dev *net_dev;
 static struct semaphore net_sem = __SEMAPHORE_INITIALIZER(net_sem, 0);
 
@@ -487,6 +491,15 @@ void shutdown_frontends(void)
 #endif
 }
 
+void app_shutdown(unsigned reason)
+{
+    shutdown_reason = reason;
+    wmb();
+    do_shutdown = 1;
+    wmb();
+    wake_up(&shutdown_queue);
+}
+
 static void shutdown_thread(void *p)
 {
     DEFINE_WAIT(w);