daemon: on studio stop, wait apps to finish before stopping jack server. Fix for #24

daemon/cmd_stop_studio.c

@@ -28,9 +28,11 @@
 
 #include "cmd.h"
 #include "studio_internal.h"
+#include "loader.h"
 
 #define STOP_STATE_WAITING_FOR_JACK_CLIENTS_DISAPPEAR   1
-#define STOP_STATE_WAITING_FOR_JACK_SERVER_STOP         2
+#define STOP_STATE_WAITING_FOR_CHILDS_TERMINATION       2
+#define STOP_STATE_WAITING_FOR_JACK_SERVER_STOP         3
 
 struct ladish_command_stop_studio
 {
@@ -75,6 +77,18 @@ static bool run(void * context)
         return true;
       }
 
+      cmd_ptr->stop_state = STOP_STATE_WAITING_FOR_CHILDS_TERMINATION;
+    }
+
+    if (cmd_ptr->stop_state == STOP_STATE_WAITING_FOR_CHILDS_TERMINATION)
+    {
+      clients_count = loader_get_app_count();
+      log_info("%u child processes are running", clients_count);
+      if (clients_count != 0)
+      {
+        return true;
+      }
+
       log_info("Stopping JACK server...");
 
       ladish_graph_dump(g_studio.studio_graph);

daemon/loader.c

@@ -564,3 +564,18 @@ free_struct:
 fail:
   return false;
 }
+
+unsigned int loader_get_app_count(void)
+{
+  struct list_head * node_ptr;
+  unsigned int count;
+
+  count = 0;
+
+  list_for_each(node_ptr, &g_childs_list)
+  {
+    count++;
+  }
+
+  return count;
+}

daemon/loader.h

@@ -42,4 +42,6 @@ void loader_run(void);
 
 void loader_uninit(void);
 
+unsigned int loader_get_app_count(void);
+
 #endif /* __LASHD_LOADER_H__ */