serv02.lc

unix网络编程卷1：套接口API的全书源码

/* include serv02 */
#include    "unp.h"##  1 ##src/server/serv02.c##

static int nchildren;##  2 ##src/server/serv02.c##
static pid_t *pids;##  3 ##src/server/serv02.c##

int##  4 ##src/server/serv02.c##
main(int argc, char **argv)##  5 ##src/server/serv02.c##
{##  6 ##src/server/serv02.c##
    int     listenfd, i;##  7 ##src/server/serv02.c##
    socklen_t addrlen;##  8 ##src/server/serv02.c##
    void    sig_int(int);##  9 ##src/server/serv02.c##
    pid_t   child_make(int, int, int);## 10 ##src/server/serv02.c##

    if (argc == 3)## 11 ##src/server/serv02.c##
        listenfd = Tcp_listen(NULL, argv[1], &addrlen);## 12 ##src/server/serv02.c##
    else if (argc == 4)## 13 ##src/server/serv02.c##
        listenfd = Tcp_listen(argv[1], argv[2], &addrlen);## 14 ##src/server/serv02.c##
    else## 15 ##src/server/serv02.c##
        err_quit("usage: serv02 [ <host> ] <port#> <#children>");## 16 ##src/server/serv02.c##
    nchildren = atoi(argv[argc - 1]);## 17 ##src/server/serv02.c##
    pids = Calloc(nchildren, sizeof(pid_t));## 18 ##src/server/serv02.c##

    for (i = 0; i < nchildren; i++)## 19 ##src/server/serv02.c##
        pids[i] = child_make(i, listenfd, addrlen); /* parent returns */## 20 ##src/server/serv02.c##

    Signal(SIGINT, sig_int);## 21 ##src/server/serv02.c##

    for (;;)## 22 ##src/server/serv02.c##
        pause();                /* everything done by children */## 23 ##src/server/serv02.c##
}## 24 ##src/server/serv02.c##
/* end serv02 */

/* include sigint */
void## 25 ##src/server/serv02.c##
sig_int(int signo)## 26 ##src/server/serv02.c##
{## 27 ##src/server/serv02.c##
    int     i;## 28 ##src/server/serv02.c##
    void    pr_cpu_time(void);## 29 ##src/server/serv02.c##

    /* 4terminate all children */## 30 ##src/server/serv02.c##
    for (i = 0; i < nchildren; i++)## 31 ##src/server/serv02.c##
        kill(pids[i], SIGTERM);## 32 ##src/server/serv02.c##
    while (wait(NULL) > 0)      /* wait for all children */## 33 ##src/server/serv02.c##
        ;## 34 ##src/server/serv02.c##
    if (errno != ECHILD)## 35 ##src/server/serv02.c##
        err_sys("wait error");## 36 ##src/server/serv02.c##

    pr_cpu_time();## 37 ##src/server/serv02.c##
    exit(0);## 38 ##src/server/serv02.c##
}## 39 ##src/server/serv02.c##
/* end sigint */