两个线程按特定时间顺序交替执行

来源：互联网发布：按option无法切换mac 编辑：程序博客网时间：2024/05/09 10:54

1、用到setitimer()函数，设定定时器

2、boost库用于创建两个线程

3、signal()用于将定时信号与响应函数绑定

源码如下：

#include<iostream>#include<csignal>#include<sys/time.h>#include<boost/thread/thread.hpp>using namespace std;bool en_transmit=false,en_receive=false;void transmit(void){cout<<"Transmit called..."<<endl;while(en_transmit){cout<<"";}cout<<"Finished Send..."<<endl<<endl;return;}void receive(void){cout<<"Receive called..."<<endl;while(en_receive){cout<<"";}cout<<"Finished Recv..."<<endl<<endl;return;}bool period=false;void sigroutine(int signo){pthread_t send,recv;cout<<signo<<endl;boost::thread_group threads;switch(signo){case SIGALRM:en_receive=false;en_transmit=true;threads.create_thread(&transmit);break;case SIGVTALRM:en_transmit=false;en_receive=true;threads.create_thread(&receive);break;}return;}int main(){struct time{int sec;int usec;};struct time period;period.sec=5;period.usec=0;struct itimerval value,ovalue,value2;signal(SIGALRM,sigroutine);signal(SIGVTALRM,sigroutine);value.it_value.tv_sec=1;value.it_value.tv_usec=0;value.it_interval.tv_sec=period.sec;value.it_interval.tv_usec=period.usec;setitimer(ITIMER_REAL,&value,&ovalue);value2.it_value.tv_sec=2;value2.it_value.tv_usec=0;value2.it_interval.tv_sec=period.sec;value2.it_interval.tv_usec=period.usec;setitimer(ITIMER_VIRTUAL,&value2,&ovalue);while(1){pause();}return 0;}

编译：g++ thread.cpp -o thread -lboost_thread

运行效果如下：

1 0