Programming

I am sure it warms the heartstrings of those guys who design CPUs with multiple parallel integer units. Calls and branches can slow things. Ditto getc().

PS: Back burner of brain bubble: FILE* also needs to have an EOF/error save variables for feof() and ferror(), but might rely on real EOF and errno. Let's look! I **never** looked before, I just inferred (so much cheaper!) HP-UX 11.00 stdio.h, excuse my line numbers:

Code:

63    _NAMESPACE_STD_START
64       typedef struct {
65        int         __cnt;
66        unsigned char    *__ptr;
67        unsigned char    *__base;
68        unsigned short     __flag;
69        unsigned char      __fileL;        /* low byte of file desc */
70        unsigned char      __fileH;        /* high byte of file desc */
71       } FILE;
72    _NAMESPACE_STD_END

It is very important that programmers realize all the FILE* stuff is inside the process, and it does all its work with the embedded fd. I was considering writing a new super_FILE* that, when you might block on FILE* I/O, services all FILE*, emptying write buffers and filling read buffers, maybe even with its own threads to take the system call hits.