1 files changed, 15 insertions, 0 deletions
diff --git a/src/util/mutex.h b/src/util/mutex.h
new file mode 100644
index 0000000..8c9a097
--- /dev/null
+++ b/src/util/mutex.h
@@ -0,0 +1,15 @@
+#ifndef SYS_MUTEX_H
+#define SYS_MUTEX_H
+
+#define NULL_PID 0
+#define SCHED_PID 1
+
+struct Mutex {
+	unsigned long* addr;
+	unsigned long pid;
+};
+
+unsigned char lock_mutex(struct Mutex*, unsigned long);
+unsigned char release_mutex(struct Mutex*, unsigned long);
+
+#endif