added:

* threads support with mutexes

cthreads.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+
+// == THREAD ===========================================
+
+typedef uintptr_t cthread_t;
+
+typedef int (*cthread_func_t)(void *);
+
+cthread_t thrCreate(cthread_func_t func, void *arg);
+bool thrValid(cthread_t ctx);
+bool thrDetach(cthread_t ctx);
+
+cthread_t thrCurrent(void);
+int thrCurrentId(void);
+int thrGetId(cthread_t ctx);
+
+void thrExit(int code);
+bool thrJoin(cthread_t ctx, int *code);
+
+// == MUTEX ============================================
+
+typedef uintptr_t cmutex_t;
+
+cmutex_t mtxInit(void);
+void mtxDestroy(cmutex_t ctx);
+
+bool mtxValid(cmutex_t ctx);
+
+bool mtxLock(cmutex_t ctx);
+bool mtxTryLock(cmutex_t ctx);
+bool mtxUnlock(cmutex_t ctx);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif