debug.c

unix环境高级编程的源代码

#include    "calld.h"
#include    <stdarg.h>

/* Note that all debug output goes back to the client. */

void
DEBUG(char *fmt, ...)        /* debug output, newline at end */
{
    va_list    args;
    char    line[MAXLINE];
    int        n;

    if (Debug == 0)
        return;
    va_start(args, fmt);
    vsprintf(line, fmt, args);
    strcat(line, "\n");
    va_end(args);

    n = strlen(line);
    if (writen(clifd, line, n) != n)
        log_sys("writen error");
}

void
DEBUG_NONL(char *fmt, ...)    /* debug output, NO newline at end */
{
    va_list    args;
    char    line[MAXLINE];
    int        n;

    if (Debug == 0)
        return;
    va_start(args, fmt);
    vsprintf(line, fmt, args);
    va_end(args);

    n = strlen(line);
    if (writen(clifd, line, n) != n)
        log_sys("writen error");
}