sleep.c

来自「glibc 库, 不仅可以学习使用库函数,还可以学习函数的具体实现,是提高功力的」· C语言 代码 · 共 11 行

/* We want an #include_next, but we are the main source file.
   So, #include ourselves and in that incarnation we can use #include_next.  */
#ifndef INCLUDED_SELF
# define INCLUDED_SELF
# include <sleep.c>
#else
/* This defines the CANCELLATION_P macro, which sleep.c checks for.  */
# include <pthreadP.h>
# include_next <sleep.c>
#endif