I created a thread which pings a machine for every 15 seconds. I made my thread function in infinite loop. Main process also in infinite loop and will run for years. I wonder the thread will continue as long as main process continuous or will thread terminates at some point? Is there any life period for the thread created, any performance degrade because of infinite thread ?

Code:

void PingFunc()
{
  while (1)
  {
  		PingMachine();		
		sleep(15);
   }
}

main()
{
 pthread_t thId;
 pthread_create (&thId, NULL, PingFunc,NULL);
 while(1)
 {
     getrequest();
     processrequest();  
  }
}