我有一个启动5个线程的应用程序。
在启动这些线程之后,main()中什么都没有发生。
main(){
`start thread 1..5
}
如何在main()中无限循环,使程序连续运行,直到得到信号。
我不想用
while(true)
因为它会吃掉CPU周期。(正如我所想)
Edit: I am using gcc 4 Thread Api :pthread OS : Linux
我有一个启动5个线程的应用程序。
在启动这些线程之后,main()中什么都没有发生。
main(){
`start thread 1..5
}
如何在main()中无限循环,使程序连续运行,直到得到信号。
我不想用
while(true)
因为它会吃掉CPU周期。(正如我所想)
Edit: I am using gcc 4 Thread Api :pthread OS : Linux
最简单的是:
while (true) sleep(1000);
最好是join()所有五个线程。
sigsuspend()
函数正是为了这个目的而设计的-它将挂起调用线程,直到它收到导致调用信号处理程序的信号。
为了避免出现争用情况(信号在进程调用<code>sigsuspend()</code>之前到达),您应该阻止信号,检查它,然后将掩码传递给<code>sigsuspend
/* Block SIGUSR1 */
sigset_t sigusr1set, origset;
sigemptyset(&sigusr1set);
sigaddset(&sigusr1set, SIGUSR1);
sigprocmask(SIG_BLOCK, &sigusr1set, &origset);
/* Set up threads etc here */
/* Unblock SIGUSR1 and wait */
sigdelset(&origset, SIGUSR1);
sigsuspend(&origset);
加入这些线程请参阅pthread_join。
您可以尝试Boost::Synchronization函数,如下所示:
main(){
`start thread 1..5
wait for signal
exit
}
Windows?使用WaitForMultipleObjects。
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