/* * Copyright 2005 Timo Hirvonen */ #ifndef COMPILER_H #define COMPILER_H /* * GCC 2.96 or compatible required */ /* Optimization: Condition @x is likely */ #define likely(x) __builtin_expect(!!(x), 1) /* Optimization: Condition @x is unlikely */ #define unlikely(x) __builtin_expect(!!(x), 0) /* Optimization: Function never returns */ #define __NORETURN __attribute__((__noreturn__)) /* Argument at index @fmt_idx is printf compatible format string and * argument at index @first_idx is the first format argument */ #define __FORMAT(fmt_idx, first_idx) __attribute__((format(printf, (fmt_idx), (first_idx)))) #if defined(__GNUC__) && (__GNUC__ >= 3) /* Optimization: Pointer returned can't alias other pointers */ #define __MALLOC __attribute__((__malloc__)) #else #define __MALLOC #endif #endif