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名师互学网 > IT > 软件开发 > 后端开发 > C/C++/C#

linux c++线程的简单应用

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linux c++线程的简单应用

1.c++11前POSIX线程

#include 
#include 
#include 
struct Param
{
	int n;
	std::string str;
};
void* func1(void* args)
{
	Param param = *(Param*)args;
	int total = 0;
	while (param.n > total)
	{
		printf("%sn", param.str.c_str());
		total++;
	}
}

int main()
{
	Param param;
	param.n = 10;
	param.str = "test......";
	pthread_t t;
	pthread_create(&t, NULL, func1, ¶m);
	printf("finished......n");
	pthread_exit(NULL);
    return 0;
}


finished......
test......
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test......

2.C++11之后支持std::thread

1> 可连接线程(阻塞等待线程结束并回收资源)

#include 
#include 
#include 
struct Param
{
	int n;
	std::string str;
};
void func1(void* args)
{
	Param param = *(Param*)args;
	int total = 0;
	while (param.n > total)
	{
		printf("%sn", param.str.c_str());
		total++;
	}
}
int main()
{
	Param param;
	param.n = 10;
	param.str = "test......";
	std::thread t(func1, ¶m);
	t.join();
	printf("finished......n");
	return 0;
}


test......
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finished......

2> 不可连接线程(分离线程)

#include 
#include 
#include 
struct Param
{
	int n;
	std::string str;
};
void func1(void* args)
{
	Param param = *(Param*)args;
	int total = 0;
	while (param.n > total)
	{
		printf("%sn", param.str.c_str());
		total++;
	}
}
int main()
{
	Param param;
	param.n = 10;
	param.str = "test......";
	std::thread t(func1, ¶m);
	t.detach();
	printf("finished......n");
	pthread_exit(NULL);//等待线程结束,不加会直接退出
	return 0;
}


finished......
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3.注意事项

visual studio开发linux c++使用线程时,需要添加库依赖项pthread

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