sdl: use mutex in printf()
This prevents lines of output being overwritten by different threads.
Change-Id: I24cee52238b53c8a4b2536e082bb4bcd103d8d60
diff --git a/apps/plugins/sdl/wrappers.c b/apps/plugins/sdl/wrappers.c
index 02e9db1..efa29ea 100644
--- a/apps/plugins/sdl/wrappers.c
+++ b/apps/plugins/sdl/wrappers.c
@@ -333,11 +333,24 @@
return 1;
}
+
/* stolen from doom */
// Here is a hacked up printf command to get the output from the game.
int printf_wrapper(const char *fmt, ...)
{
- static int p_xtpt;
+ static volatile struct mutex printf_mutex;
+ static volatile int mutex_init = 0;
+
+ if(!mutex_init)
+ {
+ rb->mutex_init(&printf_mutex);
+ mutex_init = 1;
+ }
+
+ static volatile int p_xtpt;
+
+ rb->mutex_lock(&printf_mutex);
+
char p_buf[256];
rb->yield();
va_list ap;
@@ -362,6 +375,9 @@
rb->lcd_clear_display();
}
}
+
+ rb->mutex_unlock(&printf_mutex);
+
return 1;
}