feat: IO polling for file descriptor

[lunaix-os.git] / lunaix-os / includes / lunaix / compiler.h

diff --git a/lunaix-os/includes/lunaix/compiler.h b/lunaix-os/includes/lunaix/compiler.h
index da376c1dbd36fe5ebbb6dee04204602ec3681738..f011a0b9df07cd865c81ba2c7e741ee87c5598ca 100644 (file)
--- a/lunaix-os/includes/lunaix/compiler.h
+++ b/lunaix-os/includes/lunaix/compiler.h
@@ -2,7 +2,22 @@
 #define __LUNAIX_COMPILER_H
 
 #define likely(x) __builtin_expect((x), 1)
+#define unlikely(x) __builtin_expect((x), 0)
 
 #define weak_alias(name) __attribute__((weak, alias(name)))
+#define weak __attribute__((weak))
+#define noret __attribute__((noreturn))
+
+#define stringify(v) #v
+#define stringify__(v) stringify(v)
+
+inline static void noret
+spin()
+{
+    volatile int __infloop = 1;
+    while (__infloop)
+        ;
+    __builtin_unreachable();
+}
 
 #endif /* __LUNAIX_COMPILER_H */