Simplified nginx multi-process model demo and nginxdemo

Simplified nginx multi-process model demo and nginxdemo

[test@vm c]$ cat mynginx.c
#include <stdio.h>#include <string.h>#include <unistd.h>char **os_argv;char  *os_argv_last; init_setproctitle(void){    char      *p;     size_t       size;    int   i;      size = 0;    os_argv_last = os_argv[0];    for (i = 0; os_argv[i]; i++) {        if (os_argv_last == os_argv[i]) {            os_argv_last = os_argv[i] + strlen(os_argv[i]) + 1;        }       }       os_argv_last += strlen(os_argv_last);}void setproctitle(char *title){    char  *p;    os_argv[1] = NULL;    p = strncpy((char *) os_argv[0], (char *) title,            strlen(title));    p += strlen(title);    if (os_argv_last - (char *) p > 0) {        memset(p, ' ', os_argv_last - (char *) p);    }}void start_woker_processes(){    setproctitle("mynginx:worker process");    for(;;)    {        sleep(1);        printf("worker pid=%d\n",getpid());    }}void start_dispatcher_process(){    setproctitle("mynginx:dispatcher process");    for(;;)    {        sleep(1);        printf("\tdispatcher pid=%d\n",getpid());    }}void save_argv(int argc, char *const *argv){    os_argv = (char **) argv;}int main(int argc, char **argv){    int fd;    int i;    pid_t pid;    save_argv(argc, argv);    init_setproctitle();    printf("father pid1=%d\n",getpid());    for (i = 0; i <3; i++)    {        pid = fork();         if (pid == 0)        {            start_woker_processes();        }    }     pid = fork();    if (pid == 0)    {        start_dispatcher_process();    }    printf("father pid2=%d\n",getpid());    while(1)        sleep(1);    return 0;}

 

Make mynginx

./Mynginx

Ps-ef | grep mynginx.

Test 20553 20463 0 00:00:00 pts/0./mynginx
Test 20554 20553 0 00:00:00 pts/0 mynginx: worker process
Test 20555 20553 0 00:00:00 pts/0 mynginx: worker process
Test 20556 20553 0 00:00:00 pts/0 mynginx: worker process
Test 20557 20553 0 00:00:00 pts/0 mynginx: dispatcher process
Root 20574 20560 0 00:00:00 pts/2 grep mynginx