futex: add missing header guards

The header file was introduced by fbcc3e5 ("qemu-thread: optimize QemuLockCnt with futexes on Linux", 2017-01-16) without header guards. Add them. Signed-off-by: Emilio G. Cota <[email protected]> Reviewed-by: Philippe Mathieu-Daudé <[email protected]> Signed-off-by: Michael Tokarev <[email protected]>
dreddy · Oct 16, 2017 · f3245d6 · f3245d6
1 parent 70857ad
commit f3245d6
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/include/qemu/futex.h b/include/qemu/futex.h
@@ -11,6 +11,9 @@
  *
  */
 
+#ifndef QEMU_FUTEX_H
+#define QEMU_FUTEX_H
+
 #include <sys/syscall.h>
 #include <linux/futex.h>
 
@@ -34,3 +37,5 @@ static inline void qemu_futex_wait(void *f, unsigned val)
         }
     }
 }
+
+#endif /* QEMU_FUTEX_H */