CTDP linux 程序员手册 C和C++编程（5）其他一些系统限制

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文件 "/usr/include/limits.h" 定义了系统的可变参数，例如SEM_NSEMS_MAX 表示一个进程可以同时打开的最大信号量数量。这个文件包含下列内容:

#ifdef   __USE_POSIX

/* POSIX adds things to <limits.h>.  */

# include <bits/posix1_lim.h>

#endif

#ifdef   __USE_POSIX2

# include <bits/posix2_lim.h>

#endif

#ifdef   __USE_XOPEN

# include <bits/xopen_lim.h<

#endif

这意味着文件"/usr/include/bits/posix1_lim.h" 和 "/usr/include/bits/posix2_lim.h" 定义了系统地限制。

 

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