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线程池的各个线程accept——基于UNP代码

2024-07-13 06:58:04   219人阅读

线程池的各个线程accept——基于UNP代码

1.说明

预创建一个线程池，线程池中各个线程accept。主线程不做什么。

这是Leader/Follower领导者/跟随者模式

 

2.代码

代码基于UNP的库函数

#include "unpthread.h"//线程信息typedef struct {    pthread_t    thread_tid;        //thread ID    long        thread_count;    //connections handled    } Thread;//线程结构数组Thread *tptr;                    //array of Thread structures; calloc‘edint listenfd, nthreads;socklen_t addrlen;pthread_mutex_t mlock = PTHREAD_MUTEX_INITIALIZER;static void thread_make(int i);static void sig_int(int signo){    void pr_cpu_time(void);    pr_cpu_time();    exit(0);}int main(int argc, char *argv[]){    if (argc == 3) {        listenfd = Tcp_listen(NULL, argv[1], &addrlen);    } else if (argc == 4) {        listenfd = Tcp_listen(argv[1], argv[2], &addrlen);    } else {        err_quit("Usage: a.out [ <host> ] <port#> <#threads>");    }    nthreads = atoi(argv[argc - 1]);    tptr = (Thread*)Calloc(nthreads, sizeof(Thread));        //预创建一定数目线程    for (int i = 0; i < nthreads; ++i) {        thread_make(i);    }    Signal(SIGINT, sig_int);    //主线程什么也不做，创建的各个线程accept    for (;;) {        pause();    }    return 0;}static void *thread_main(void *arg){    //第几个线程    int tcnt = (int)arg;    DPRINTF("thread %d starting\n", tcnt);    void web_child(int);    struct sockaddr *cliaddr = (struct sockaddr*)Malloc(addrlen);        //accept，然后处理连接    for (;;) {        socklen_t clilen = addrlen;        DPRINTF("thread %d lock\n", tcnt);         //加锁        Pthread_mutex_lock(&mlock);        DPRINTF("thread %d start to accept\n", tcnt);        int connfd = Accept(listenfd, cliaddr, &clilen);        DPRINTF("thread %d accept a connection\n", tcnt);        Pthread_mutex_unlock(&mlock);        DPRINTF("thread %d unlock\n", tcnt);        ++tptr[tcnt].thread_count;        DPRINTF("thread %d accept %d connections\n", tcnt, tptr[tcnt].thread_count);        web_child(connfd);        Close(connfd);    }    return NULL;}static void thread_make(int i){    Pthread_create(&tptr[i].thread_tid, NULL, &thread_main, (void*)i);    return;}


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