1 files changed, 20 insertions, 1 deletions
diff --git a/linen.h b/linen.h
index ef625d0..9062111 100644
--- a/linen.h
+++ b/linen.h
@@ -5,9 +5,28 @@
 	#error "Linen (libinen.so) only works on x86_64 Linux!"
 #endif
 
-typedef int* linen_thread_t;
+#include <stdint.h>
+
+
+typedef struct {
+	uint32_t futex;
+	uint32_t magic;
+} *linen_thread_t;
 
 extern int linen_thread_create(linen_thread_t* handle, void* (*func)(void*), void* arg);
 extern int linen_thread_finish(linen_thread_t  handle, void** retval);
 
+
+typedef struct {
+	uint32_t futex;
+	uint32_t count;
+	uint32_t magic;
+} linen_lock_t;
+
+#define LINEN_LOCK_INITIALIZER { 0, 0, 0xCAFEBABE }
+
+extern int linen_lock_acquire(linen_lock_t* handle);
+extern int linen_lock_release(linen_lock_t* handle);
+
+
 #endif /* _LINEN_H_ */