Shared memory segment manager in userland

1 files changed, 15 insertions, 0 deletions

diff --git a/src/include/mutex.h b/src/include/mutex.h
new file mode 100644
index 0000000..50b5606
--- /dev/null
+++ b/src/include/mutex.h
@@ -0,0 +1,15 @@
+#ifndef DEF_MUTEX_H
+#define DEF_MUTEX_H
+
+#include <gc/syscall.h>
+
+#define MUTEX_LOCKED 1
+#define MUTEX_UNLOCKED 0
+
+//A mutex is just an uint32_t
+
+void mutex_lock(uint32_t* mutex);	//wait for mutex to be free
+int mutex_lockE(uint32_t* mutex);	//lock mutex only if free, returns !0 if locked, 0 if was busy
+void mutex_unlock(uint32_t* mutex);
+
+#endif