c++学习笔记（pthread多线程参数同步）

多线程参数同步

#include "pch.h"
#include <iostream>
#include <stdio.h>
#include <pthread.h>
#include <assert.h>
#include <stdlib.h>
#include <Windows.h>
using namespace std;
#pragma comment(lib, "pthreadVC2.lib")
struct  node_ {

	int index;

	char name;

}node;


void *test(void *arg)
{
	int i;

	node_ *pc = (node_*)arg;
	pc->index = 5000;
	//cout <<  << endl;
	return NULL;

}

int main(int argc, char* argv)
{
	pthread_t pId;
	int i, ret;
	node_ *ceshi=new node_;
	ceshi->index = 5;
	ceshi->name = 'sb';
	//创建子线程，线程id为pId
	ret = pthread_create(&pId, NULL, test, (void*)ceshi);

	if (ret != 0)
	{
		printf("create pthread error!\n");
		exit(1);
	}
	Sleep(10);
	cout << ceshi->index;


	printf("main thread will exit when pthread is over\n");
	//等待线程pId的完成
	pthread_join(pId, NULL);
	printf("main thread  exit\n");

	return 0;

}

 传递单个参数

#include "pch.h"
#include <iostream>
#include <stdio.h>
#include <pthread.h>
#include <assert.h>
#include <stdlib.h>
#include <Windows.h>
using namespace std;
#pragma comment(lib, "pthreadVC2.lib")
struct  node_ {

	int index;

	char name;

}node;


void *test(void *arg)
{
	int i;

	int *pc = (int *)arg;
	*pc = 10;
	
	//cout <<  << endl;
	return NULL;

}

int main(int argc, char* argv)
{
	pthread_t pId;
	int i, ret;
	int a = 5;
	int *ceshi= &a;
	
	//创建子线程，线程id为pId
	ret = pthread_create(&pId, NULL, test, (void*)ceshi);

	if (ret != 0)
	{
		printf("create pthread error!\n");
		exit(1);
	}
	Sleep(10);
	cout << a;


	printf("main thread will exit when pthread is over\n");
	//等待线程pId的完成
	pthread_join(pId, NULL);
	printf("main thread  exit\n");

	return 0;

}