管道socket什么意思_pipe是什么意思

管道socket什么意思_pipe是什么意思在看Android输入系统的时候,第一次看到socketpair,发现和管道非常相似。唯他们的区别就是socketpair,默认支持全双工,而pipe是半双工的。他们一样只能用在父子进程或者线程之间通信。下面分别以socketpair和管道实现全双工通信。管道实现线程间全双工通信#include#include#include#

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在看Android 输入系统的时候,第一次看到socketpair,发现和管道非常相似。唯他们的区别就是socketpair,默认支持全双工,而pipe是半双工的。他们一样只能用在父子进程或者线程之间通信。

下面分别以socketpair和管道实现全双工通信。

管道实现线程间全双工通信

#include<stdio.h>
#include<pthread.h>
#include<string.h>
#include<stdlib.h>
#include<unistd.h>

#define SIZE 1024

int fd1[2],fd2[2]; //fd1[0]:read,  fd1[1]:write

void *func_thread1(void *arg)
{
    char buf[SIZE] = {0};
    int cnt = 0;
    while(1)
    {
        sprintf(buf,"hello main %d\n",cnt++);
        write(fd1[1],buf,strlen(buf));
        int len = read(fd2[0],buf,SIZE);
        buf[len] = '
#include<stdio.h>
#include<pthread.h>
#include<string.h>
#include<stdlib.h>
#include<unistd.h>
#define SIZE 1024
int fd1[2],fd2[2]; //fd1[0]:read,  fd1[1]:write
void *func_thread1(void *arg)
{
char buf[SIZE] = {0};
int cnt = 0;
while(1)
{
sprintf(buf,"hello main %d\n",cnt++);
write(fd1[1],buf,strlen(buf));
int len = read(fd2[0],buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sleep(3);
}
return NULL;
}
int main(int agrc,char**argv)
{
pthread_t thread1_t;
/*1. create pipe*/
pipe(fd1);
pipe(fd2);
/*2. create thread1*/
pthread_create(&thread1_t, NULL,
func_thread1, NULL);
char buf[SIZE] = {0};
int cnt = 0;
char * p = buf;
printf("buf[SIZE] sizeof:%d, strlen:%d\n",sizeof(buf),strlen(buf));
printf(" char * p sizeof:%d, strlen:%d\n",sizeof(p),strlen(p));
while(1){
int len = read(fd1[0],buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sprintf(buf,"hello thread %d\n",cnt++);
write(fd2[1],buf,strlen(buf));  
sleep(3);
}
return 0;
}
'
; printf("%s",buf); bzero(buf,SIZE); sleep(3); } return NULL; } int main(int agrc,char**argv) { pthread_t thread1_t; /*1. create pipe*/ pipe(fd1); pipe(fd2); /*2. create thread1*/ pthread_create(&thread1_t, NULL, func_thread1, NULL); char buf[SIZE] = {0}; int cnt = 0; char * p = buf; printf("buf[SIZE] sizeof:%d, strlen:%d\n",sizeof(buf),strlen(buf)); printf(" char * p sizeof:%d, strlen:%d\n",sizeof(p),strlen(p)); while(1){ int len = read(fd1[0],buf,SIZE); buf[len] = '
#include<stdio.h>
#include<pthread.h>
#include<string.h>
#include<stdlib.h>
#include<unistd.h>
#define SIZE 1024
int fd1[2],fd2[2]; //fd1[0]:read,  fd1[1]:write
void *func_thread1(void *arg)
{
char buf[SIZE] = {0};
int cnt = 0;
while(1)
{
sprintf(buf,"hello main %d\n",cnt++);
write(fd1[1],buf,strlen(buf));
int len = read(fd2[0],buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sleep(3);
}
return NULL;
}
int main(int agrc,char**argv)
{
pthread_t thread1_t;
/*1. create pipe*/
pipe(fd1);
pipe(fd2);
/*2. create thread1*/
pthread_create(&thread1_t, NULL,
func_thread1, NULL);
char buf[SIZE] = {0};
int cnt = 0;
char * p = buf;
printf("buf[SIZE] sizeof:%d, strlen:%d\n",sizeof(buf),strlen(buf));
printf(" char * p sizeof:%d, strlen:%d\n",sizeof(p),strlen(p));
while(1){
int len = read(fd1[0],buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sprintf(buf,"hello thread %d\n",cnt++);
write(fd2[1],buf,strlen(buf));  
sleep(3);
}
return 0;
}
'
; printf("%s",buf); bzero(buf,SIZE); sprintf(buf,"hello thread %d\n",cnt++); write(fd2[1],buf,strlen(buf)); sleep(3); } return 0; }

Socketpair实现线程间全双工通信

#include <stdio.h>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>

#define SIZE 1024

void *func_thread1(void *arg)
{
    char buf[SIZE] = {
  
  0};
    int cnt = 0;
    int fd = (int)arg;
    while(1)
    {
        sprintf(buf,"hello main %d\n",cnt++);
        write(fd,buf,strlen(buf));
        int len = read(fd,buf,SIZE);
        buf[len] = '
#include <stdio.h>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>
#define SIZE 1024
void *func_thread1(void *arg)
{
char buf[SIZE] = {
0};
int cnt = 0;
int fd = (int)arg;
while(1)
{
sprintf(buf,"hello main %d\n",cnt++);
write(fd,buf,strlen(buf));
int len = read(fd,buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sleep(3);
}
return NULL;
}
int main(int agrc,char**argv)
{
int fd[2];
pthread_t thread1_t;
/*1. create socketpair*/
int ret = socketpair(AF_UNIX,SOCK_STREAM,0,fd);
if(ret < 0){
perror("socketpair");
exit(-1);
}
/*2. create thread1*/
pthread_create(&thread1_t, NULL,
func_thread1, fd[1]);
char buf[SIZE] = {
0};
int cnt = 0;
char * p = buf;
while(1){
int len = read(fd[0],buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sprintf(buf,"hello thread %d\n",cnt++);
write(fd[0],buf,strlen(buf));   
sleep(3);
}
return 0;
}
'
; printf("%s",buf); bzero(buf,SIZE); sleep(3); } return NULL; } int main(int agrc,char**argv) { int fd[2]; pthread_t thread1_t; /*1. create socketpair*/ int ret = socketpair(AF_UNIX,SOCK_STREAM,0,fd); if(ret < 0){ perror("socketpair"); exit(-1); } /*2. create thread1*/ pthread_create(&thread1_t, NULL, func_thread1, fd[1]); char buf[SIZE] = { 0}; int cnt = 0; char * p = buf; while(1){ int len = read(fd[0],buf,SIZE); buf[len] = '
#include <stdio.h>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>
#define SIZE 1024
void *func_thread1(void *arg)
{
char buf[SIZE] = {
0};
int cnt = 0;
int fd = (int)arg;
while(1)
{
sprintf(buf,"hello main %d\n",cnt++);
write(fd,buf,strlen(buf));
int len = read(fd,buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sleep(3);
}
return NULL;
}
int main(int agrc,char**argv)
{
int fd[2];
pthread_t thread1_t;
/*1. create socketpair*/
int ret = socketpair(AF_UNIX,SOCK_STREAM,0,fd);
if(ret < 0){
perror("socketpair");
exit(-1);
}
/*2. create thread1*/
pthread_create(&thread1_t, NULL,
func_thread1, fd[1]);
char buf[SIZE] = {
0};
int cnt = 0;
char * p = buf;
while(1){
int len = read(fd[0],buf,SIZE);
buf[len] = '\0';
printf("%s",buf);
bzero(buf,SIZE);
sprintf(buf,"hello thread %d\n",cnt++);
write(fd[0],buf,strlen(buf));   
sleep(3);
}
return 0;
}
'
; printf("%s",buf); bzero(buf,SIZE); sprintf(buf,"hello thread %d\n",cnt++); write(fd[0],buf,strlen(buf)); sleep(3); } return 0; }
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