Merge nanoos

nanoos/semaphore.h

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2022 Oleg Borodin  <borodin@unix7.org>
+ */
+
+
+#include <stdint.h>
+
+typedef struct {
+    int32_t value;
+} sem_t;
+
+void sem_init(sem_t* sem, int32_t value);
+int32_t sem_wait(sem_t* sem);
+int32_t sem_post(sem_t* sem);