epoll多线程
2015-12-04 14:22
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http://blog.csdn.net/liangxiaozhang/article/details/7451253
[cpp] view
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <sys/epoll.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <netdb.h>
#include <pthread.h>
#define THREAD_MAX 128
#define LISTEN_MAX 5000
#define SERVER_IP "192.168.18.191"
typedef struct {
char ip4[128];
int port;
int fd;
}LISTEN_INFO;
static LISTEN_INFO s_listens[LISTEN_MAX];
static unsigned int s_thread_para[THREAD_MAX][8];
static pthread_t s_tid[THREAD_MAX];
pthread_mutex_t s_mutex[THREAD_MAX];
static int init_thread_pool(void);
static int init_listen4(char *ip4, int port, int max_link);
void *test_server4(unsigned int thread_para[]);
int main(int argc, char *argv[])
{
int i, j, rc;
int sock_listen;
int sock_cli;
int listen_index;
int epfd;
int nfds;
struct epoll_event ev;
struct epoll_event events[LISTEN_MAX];
socklen_t addrlen;
struct sockaddr_in addr4;
rc = init_thread_pool();
if(0 != rc)
exit(-1);
for(i = 0; i<LISTEN_MAX; ++i)
{
sprintf(s_listens[i].ip4, "%s", SERVER_IP);
s_listens[i].port = 8000 + i;
rc = init_listen4(s_listens[i].ip4, s_listens[i].port, 64);
if(0 > rc)
{
fprintf(stderr, "no cread %s:%d\r\n", s_listens[i].ip4, s_listens[i].port);
exit(-1);
}
s_listens[i].fd = rc;
}
epfd = epoll_create(8192);
for(i = 0; i < LISTEN_MAX; i++)
{
ev.events = EPOLLIN;
ev.data.u32 = i;
if(epoll_ctl(epfd, EPOLL_CTL_ADD, s_listens[i].fd, &ev) < 0)
{
fprintf(stderr, "ÏòepollŒ¯ºÏÌíŒÓÌלÓ×Öʧ°Ü(fd=%d)\r\n", rc);
exit(-1);
}
}
for(;;)
{
nfds = epoll_wait(epfd, events, LISTEN_MAX, -1);
for(i = 0; i < nfds; i++)
{
listen_index = events[i].data.u32;
sock_listen = s_listens[listen_index].fd;
addrlen = sizeof(struct sockaddr_in);
bzero(&addr4, addrlen);
sock_cli = accept(sock_listen, (struct sockaddr *)&addr4, &addrlen);
if(0 > sock_cli)
{
fprintf(stderr, "œÓÊÕ¿Í»§¶Ëʧ°Ü\n");
continue;
}
for(j = 0; j < THREAD_MAX; j++)
{
if(0 == s_thread_para[j][0])
break;
}
if(j >= THREAD_MAX)
{
fprintf(stderr, "Ï̳߳ØÒÑÂú£¬Á¬œÓœ«±»·ÅÆú\r\n");
shutdown(sock_cli, SHUT_RDWR);
close(sock_cli);
continue;
}
s_thread_para[j][0] = 1;
s_thread_para[j][1] = sock_cli;
s_thread_para[j][2] = listen_index;
pthread_mutex_unlock(s_mutex + j);
}//end of for(i;;)
}//end of for(;;)
exit(0);
}
static int init_thread_pool(void)
{
int i, rc;
for(i = 0; i < THREAD_MAX; i++)
{
s_thread_para[i][0] = 0;
s_thread_para[i][7] = i;
pthread_mutex_lock(s_mutex + i);
}
for(i = 0; i < THREAD_MAX; i++)
{
rc = pthread_create(s_tid + i, 0, (void *)test_server4, (void *)(s_thread_para[i]));
if(0 != rc)
{
//fprintf(stderr, "creat thread fail\n");
printf("rc = %d\n", rc);
return -1;
}
}
return 0;
}
static int init_listen4(char *ip4, int port, int max_link)
{
int sock_listen4;
struct sockaddr_in addr4;
unsigned int optval;
struct linger optval1;
bzero(&addr4, sizeof(addr4));
inet_pton(AF_INET, ip4, &(addr4.sin_addr));
addr4.sin_family = AF_INET;
addr4.sin_port = htons(port);
sock_listen4 = socket(AF_INET, SOCK_STREAM, 0);
if(0 > sock_listen4)
return -1;
optval = 0x1;
setsockopt(sock_listen4, SOL_SOCKET, SO_REUSEADDR, &optval, 4);
optval1.l_onoff = 1;
optval1.l_linger = 60;
setsockopt(sock_listen4, SOL_SOCKET, SO_LINGER, &optval1, sizeof(struct linger));
if(0 > bind(sock_listen4, (struct sockaddr *)&addr4, sizeof(addr4)))
{
close(sock_listen4);
return -1;
}
if(0 > listen(sock_listen4, max_link))
{
close(sock_listen4);
return -1;
}
return sock_listen4;
}
void *test_server4(unsigned int thread_para[])
{
int pool_index;
int sock_cli;
int listen_index;
char buff[32768];
char *p;
int i, j, len;
pthread_detach(pthread_self());
pool_index = thread_para[7];
wait_unlock:
pthread_mutex_lock(s_mutex + pool_index);
sock_cli = thread_para[1];
listen_index = thread_para[2];
len = recv(sock_cli, buff, 32768, MSG_NOSIGNAL);
p = buff;
p += sprintf(p , "HTTP/1.1 200 OK/r/n");
p += sprintf(p , "Content-Type:text/html/r/n");
p += sprintf(p , "Connection:close/r/n/r/n");
p += sprintf(p , "<html>/r/n<head>/r/n");
j = 0;
for(i = 0; i <THREAD_MAX; i++)
{
if(0 != s_thread_para[i][0])
j++;
}
len = p - buff;
send(sock_cli, buff, len, MSG_NOSIGNAL);
shutdown(sock_cli, SHUT_RDWR);
close(sock_cli);
thread_para[0] = 0;
goto wait_unlock;
pthread_exit(NULL);
}
编译gcc server.c -Wall -O2 -pthread -o server
由于
#define THREAD_MAX 4096
会创建失败,因此我把其值改为128
方便测试。
[cpp] view
plaincopy
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <sys/epoll.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <netdb.h>
#include <pthread.h>
#define THREAD_MAX 128
#define LISTEN_MAX 5000
#define SERVER_IP "192.168.18.191"
typedef struct {
char ip4[128];
int port;
int fd;
}LISTEN_INFO;
static LISTEN_INFO s_listens[LISTEN_MAX];
static unsigned int s_thread_para[THREAD_MAX][8];
static pthread_t s_tid[THREAD_MAX];
pthread_mutex_t s_mutex[THREAD_MAX];
static int init_thread_pool(void);
static int init_listen4(char *ip4, int port, int max_link);
void *test_server4(unsigned int thread_para[]);
int main(int argc, char *argv[])
{
int i, j, rc;
int sock_listen;
int sock_cli;
int listen_index;
int epfd;
int nfds;
struct epoll_event ev;
struct epoll_event events[LISTEN_MAX];
socklen_t addrlen;
struct sockaddr_in addr4;
rc = init_thread_pool();
if(0 != rc)
exit(-1);
for(i = 0; i<LISTEN_MAX; ++i)
{
sprintf(s_listens[i].ip4, "%s", SERVER_IP);
s_listens[i].port = 8000 + i;
rc = init_listen4(s_listens[i].ip4, s_listens[i].port, 64);
if(0 > rc)
{
fprintf(stderr, "no cread %s:%d\r\n", s_listens[i].ip4, s_listens[i].port);
exit(-1);
}
s_listens[i].fd = rc;
}
epfd = epoll_create(8192);
for(i = 0; i < LISTEN_MAX; i++)
{
ev.events = EPOLLIN;
ev.data.u32 = i;
if(epoll_ctl(epfd, EPOLL_CTL_ADD, s_listens[i].fd, &ev) < 0)
{
fprintf(stderr, "ÏòepollŒ¯ºÏÌíŒÓÌלÓ×Öʧ°Ü(fd=%d)\r\n", rc);
exit(-1);
}
}
for(;;)
{
nfds = epoll_wait(epfd, events, LISTEN_MAX, -1);
for(i = 0; i < nfds; i++)
{
listen_index = events[i].data.u32;
sock_listen = s_listens[listen_index].fd;
addrlen = sizeof(struct sockaddr_in);
bzero(&addr4, addrlen);
sock_cli = accept(sock_listen, (struct sockaddr *)&addr4, &addrlen);
if(0 > sock_cli)
{
fprintf(stderr, "œÓÊÕ¿Í»§¶Ëʧ°Ü\n");
continue;
}
for(j = 0; j < THREAD_MAX; j++)
{
if(0 == s_thread_para[j][0])
break;
}
if(j >= THREAD_MAX)
{
fprintf(stderr, "Ï̳߳ØÒÑÂú£¬Á¬œÓœ«±»·ÅÆú\r\n");
shutdown(sock_cli, SHUT_RDWR);
close(sock_cli);
continue;
}
s_thread_para[j][0] = 1;
s_thread_para[j][1] = sock_cli;
s_thread_para[j][2] = listen_index;
pthread_mutex_unlock(s_mutex + j);
}//end of for(i;;)
}//end of for(;;)
exit(0);
}
static int init_thread_pool(void)
{
int i, rc;
for(i = 0; i < THREAD_MAX; i++)
{
s_thread_para[i][0] = 0;
s_thread_para[i][7] = i;
pthread_mutex_lock(s_mutex + i);
}
for(i = 0; i < THREAD_MAX; i++)
{
rc = pthread_create(s_tid + i, 0, (void *)test_server4, (void *)(s_thread_para[i]));
if(0 != rc)
{
//fprintf(stderr, "creat thread fail\n");
printf("rc = %d\n", rc);
return -1;
}
}
return 0;
}
static int init_listen4(char *ip4, int port, int max_link)
{
int sock_listen4;
struct sockaddr_in addr4;
unsigned int optval;
struct linger optval1;
bzero(&addr4, sizeof(addr4));
inet_pton(AF_INET, ip4, &(addr4.sin_addr));
addr4.sin_family = AF_INET;
addr4.sin_port = htons(port);
sock_listen4 = socket(AF_INET, SOCK_STREAM, 0);
if(0 > sock_listen4)
return -1;
optval = 0x1;
setsockopt(sock_listen4, SOL_SOCKET, SO_REUSEADDR, &optval, 4);
optval1.l_onoff = 1;
optval1.l_linger = 60;
setsockopt(sock_listen4, SOL_SOCKET, SO_LINGER, &optval1, sizeof(struct linger));
if(0 > bind(sock_listen4, (struct sockaddr *)&addr4, sizeof(addr4)))
{
close(sock_listen4);
return -1;
}
if(0 > listen(sock_listen4, max_link))
{
close(sock_listen4);
return -1;
}
return sock_listen4;
}
void *test_server4(unsigned int thread_para[])
{
int pool_index;
int sock_cli;
int listen_index;
char buff[32768];
char *p;
int i, j, len;
pthread_detach(pthread_self());
pool_index = thread_para[7];
wait_unlock:
pthread_mutex_lock(s_mutex + pool_index);
sock_cli = thread_para[1];
listen_index = thread_para[2];
len = recv(sock_cli, buff, 32768, MSG_NOSIGNAL);
p = buff;
p += sprintf(p , "HTTP/1.1 200 OK/r/n");
p += sprintf(p , "Content-Type:text/html/r/n");
p += sprintf(p , "Connection:close/r/n/r/n");
p += sprintf(p , "<html>/r/n<head>/r/n");
j = 0;
for(i = 0; i <THREAD_MAX; i++)
{
if(0 != s_thread_para[i][0])
j++;
}
len = p - buff;
send(sock_cli, buff, len, MSG_NOSIGNAL);
shutdown(sock_cli, SHUT_RDWR);
close(sock_cli);
thread_para[0] = 0;
goto wait_unlock;
pthread_exit(NULL);
}
编译gcc server.c -Wall -O2 -pthread -o server
由于
#define THREAD_MAX 4096
会创建失败,因此我把其值改为128
方便测试。
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