安装libevent ubuntu下

1.是否安装

安装了的话应该是这样的：如果不是，那就装一下。

chen@chen-book1:~/libevent20$ ls -al /usr/lib |grep libevent
lrwxrwxrwx   1 root root           21 2013-06-07 10:43 libevent-2.0.so.5 -> libevent-2.0.so.5.1.4
-rw-r--r--   1 root root       281472 2011-07-08 08:28 libevent-2.0.so.5.1.1
-rwxr-xr-x   1 root root       814018 2013-06-07 10:43 libevent-2.0.so.5.1.4
-rw-r--r--   1 root root      1144276 2013-06-07 10:43 libevent.a
lrwxrwxrwx   1 root root           26 2013-06-07 10:43 libevent_core-2.0.so.5 -> libevent_core-2.0.so.5.1.4
-rwxr-xr-x   1 root root       493956 2013-06-07 10:43 libevent_core-2.0.so.5.1.4
-rw-r--r--   1 root root       716442 2013-06-07 10:43 libevent_core.a
-rwxr-xr-x   1 root root          983 2013-06-07 10:43 libevent_core.la
lrwxrwxrwx   1 root root           26 2013-06-07 10:43 libevent_core.so -> libevent_core-2.0.so.5.1.4
lrwxrwxrwx   1 root root           27 2013-06-07 10:43 libevent_extra-2.0.so.5 -> libevent_extra-2.0.so.5.1.4
-rwxr-xr-x   1 root root       337896 2013-06-07 10:43 libevent_extra-2.0.so.5.1.4
-rw-r--r--   1 root root       427906 2013-06-07 10:43 libevent_extra.a
-rwxr-xr-x   1 root root          990 2013-06-07 10:43 libevent_extra.la
lrwxrwxrwx   1 root root           27 2013-06-07 10:43 libevent_extra.so -> libevent_extra-2.0.so.5.1.4
-rwxr-xr-x   1 root root          948 2013-06-07 10:43 libevent.la
lrwxrwxrwx   1 root root           30 2013-06-07 10:43 libevent_pthreads-2.0.so.5 -> libevent_pthreads-2.0.so.5.1.4
-rwxr-xr-x   1 root root        19138 2013-06-07 10:43 libevent_pthreads-2.0.so.5.1.4
-rw-r--r--   1 root root        12226 2013-06-07 10:43 libevent_pthreads.a
-rwxr-xr-x   1 root root         1011 2013-06-07 10:43 libevent_pthreads.la
lrwxrwxrwx   1 root root           30 2013-06-07 10:43 libevent_pthreads.so -> libevent_pthreads-2.0.so.5.1.4
lrwxrwxrwx   1 root root           21 2013-06-07 10:43 libevent.so -> libevent-2.0.so.5.1.4

2.下载

http://libevent.org/

3.安装

解压；

进入目录；

./configure –prefix=/usr         配置目录

make

sudo make install

4.验证

chen@chen-book1:~/libevent20$ ls -al /usr/lib |grep libevent
lrwxrwxrwx   1 root root           21 2013-06-07 10:43 libevent-2.0.so.5 -> libevent-2.0.so.5.1.4
-rw-r--r--   1 root root       281472 2011-07-08 08:28 libevent-2.0.so.5.1.1
-rwxr-xr-x   1 root root       814018 2013-06-07 10:43 libevent-2.0.so.5.1.4
-rw-r--r--   1 root root      1144276 2013-06-07 10:43 libevent.a
lrwxrwxrwx   1 root root           26 2013-06-07 10:43 libevent_core-2.0.so.5 -> libevent_core-2.0.so.5.1.4
-rwxr-xr-x   1 root root       493956 2013-06-07 10:43 libevent_core-2.0.so.5.1.4
-rw-r--r--   1 root root       716442 2013-06-07 10:43 libevent_core.a
-rwxr-xr-x   1 root root          983 2013-06-07 10:43 libevent_core.la
lrwxrwxrwx   1 root root           26 2013-06-07 10:43 libevent_core.so -> libevent_core-2.0.so.5.1.4
lrwxrwxrwx   1 root root           27 2013-06-07 10:43 libevent_extra-2.0.so.5 -> libevent_extra-2.0.so.5.1.4
-rwxr-xr-x   1 root root       337896 2013-06-07 10:43 libevent_extra-2.0.so.5.1.4
-rw-r--r--   1 root root       427906 2013-06-07 10:43 libevent_extra.a
-rwxr-xr-x   1 root root          990 2013-06-07 10:43 libevent_extra.la
lrwxrwxrwx   1 root root           27 2013-06-07 10:43 libevent_extra.so -> libevent_extra-2.0.so.5.1.4
-rwxr-xr-x   1 root root          948 2013-06-07 10:43 libevent.la
lrwxrwxrwx   1 root root           30 2013-06-07 10:43 libevent_pthreads-2.0.so.5 -> libevent_pthreads-2.0.so.5.1.4
-rwxr-xr-x   1 root root        19138 2013-06-07 10:43 libevent_pthreads-2.0.so.5.1.4
-rw-r--r--   1 root root        12226 2013-06-07 10:43 libevent_pthreads.a
-rwxr-xr-x   1 root root         1011 2013-06-07 10:43 libevent_pthreads.la
lrwxrwxrwx   1 root root           30 2013-06-07 10:43 libevent_pthreads.so -> libevent_pthreads-2.0.so.5.1.4

lrwxrwxrwx   1 root root           21 2013-06-07 10:43 libevent.so -> libevent-2.0.so.5.1.4

5.测试

服务器端ser.c

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#include <sys/socket.h>  

#include <sys/types.h>  

#include <netinet/in.h>  

#include <stdio.h>  

#include <string.h>  

#include <event.h>  

#include <stdlib.h>  

  

#define PORT        25341  

#define BACKLOG     5  

#define MEM_SIZE    1024  

  

struct event_base* base;  

struct sock_ev  

{  

    struct event* read_ev;  

    struct event* write_ev;  

    char* buffer;  

};  

  

void release_sock_event(struct sock_ev* ev)  

{  

    event_del(ev->read_ev);  

    free(ev->read_ev);  

    free(ev->write_ev);  

    free(ev->buffer);  

    free(ev);  

}  

  

void on_write(int sock, short event, void* arg)  

{  

    char* buffer = (char*)arg;  

    send(sock, buffer, strlen(buffer), 0);  

  

    free(buffer);  

}  

  

void on_read(int sock, short event, void* arg)  

{  

    struct event* write_ev;  

    int size;  

    struct sock_ev* ev = (struct sock_ev*)arg;  

    ev->buffer = (char*)malloc(MEM_SIZE);  

    bzero(ev->buffer, MEM_SIZE);  

    size = recv(sock, ev->buffer, MEM_SIZE, 0);  

    printf("receive data:%s, size:%d\n", ev->buffer, size);  

    if (size == 0)   

    {  

        release_sock_event(ev);  

        close(sock);  

        return;  

    }  

    event_set(ev->write_ev, sock, EV_WRITE, on_write, ev->buffer);  

    event_base_set(base, ev->write_ev);  

    event_add(ev->write_ev, NULL);  

}  

  

void on_accept(int sock, short event, void* arg)  

{  

    struct sockaddr_in cli_addr;  

    int newfd, sin_size;  

    struct sock_ev* ev = (struct sock_ev*)malloc(sizeof(struct sock_ev));  

    ev->read_ev = (struct event*)malloc(sizeof(struct event));  

    ev->write_ev = (struct event*)malloc(sizeof(struct event));  

    sin_size = sizeof(struct sockaddr_in);  

    newfd = accept(sock, (struct sockaddr*)&cli_addr, &sin_size);  

    event_set(ev->read_ev, newfd, EV_READ|EV_PERSIST, on_read, ev);  

    event_base_set(base, ev->read_ev);  

    event_add(ev->read_ev, NULL);  

}  

  

int main(int argc, char* argv[])  

{  

    struct sockaddr_in my_addr;  

    int sock;  

  

    sock = socket(AF_INET, SOCK_STREAM, 0);  

    int yes = 1;  

    setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));  

    memset(&my_addr, 0, sizeof(my_addr));  

    my_addr.sin_family = AF_INET;  

    my_addr.sin_port = htons(PORT);  

    my_addr.sin_addr.s_addr = INADDR_ANY;  

    bind(sock, (struct sockaddr*)&my_addr, sizeof(struct sockaddr));  

    listen(sock, BACKLOG);  

  

    struct event listen_ev;  

    base = event_base_new();  

    event_set(&listen_ev, sock, EV_READ|EV_PERSIST, on_accept, NULL);  

    event_base_set(base, &listen_ev);  

    event_add(&listen_ev, NULL);  

    event_base_dispatch(base);  

  

    return 0;  

}  

客户端echo_client.c：

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#include <unistd.h>  

#include <stdio.h>  

#include <fcntl.h>  

#include <netdb.h>  

#include <sys/socket.h>  

#include <stdlib.h>  

#include <string.h>  

#define cerror(str) do{perror(str); exit(EXIT_FAILURE); }while(0)  

  

static int port;   

static char addr[256];  

static int nlen;  

static char msg[]="hello\n";  

int main(int argc, char*argv[])  

{  

      

    int fd;  

    struct sockaddr_in sin;  

      

    memset(&sin, 0, sizeof(sin));  

    sin.sin_family = AF_INET;  

    

    if(argc<3)  

    {  

        port = 8888;  

    }else  

    {  

        port = atoi(argv[2]);  

    }  

      

    sin.sin_port = htons(port);  

      

    if(argc<2)  

    {  

        strcpy(addr, argv[1]);  

        if (inet_pton(AF_INET, addr, &(sin.sin_addr) )<0)  

        {  

             struct hostent *psh;    

             psh=gethostbyname(addr);  

             if(psh!=NULL)  

                inet_pton(AF_INET, psh->h_addr, &(sin.sin_addr) );  

             else  

                cerror("inet_pton");  

        }  

    }  

      

    if((fd=socket(AF_INET, SOCK_STREAM, 0))<0)  

        cerror("socket");  

      

    if(connect(fd, (struct sockaddr*)&sin, sizeof(sin))<0 )  

        cerror("sonnect");  

      

    if( (nlen = write(fd,msg, strlen(msg)))<0 )  

        cerror("write");  

          

    if( (nlen = read(fd,msg, strlen(msg)))<0 )  

        cerror("read");  

    msg[nlen]='\0';  

    printf("msg: %s\n", msg);  

    return 0;  

}  

编译

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chen@chen-book1:~/libevent20/sample$ gcc echo_client.c -o client  

chen@chen-book1:~/libevent20/sample$ gcc ser.c -o ser -levent  

chen@chen-book1:~/libevent20/sample$ ./ser &  

[1] 6995  

chen@chen-book1:~/libevent20/sample$ ./client localhost 25341  

receive data:hello  

, size:6  

msg: hello  

  

receive data:, size:0  

chen@chen-book1:~/libevent20/sample$ ./client localhost 25341  

receive data:hello  

, size:6  

msg: hello  

代码和安装程序下载链接：
http://download.csdn.net/detail/fall221/5537153