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"С таймер ..." Отправлено Аноним, 16-Апр-18 08:49
>> Нужен таймер, программный, чтобы допустим каждые 500 миллисекунд, основная программа прерывалась >> (как по прерыванию) исполнялся определенный код, и снова продолжалась основная программа >> ... > http://docs.libuv.org/en/v1.x/timer.html Ну или еще вот так: man setitimer #include <signal.h>                                                                                                                                                                                                                 #include <stdio.h>                                                                 #include <string.h>                                                                 #include <sys/time.h>                                                                                                                                                  void timer_handler (int signum)                                                     {                                                                                       static int count = 0;                                                               printf ("timer expired %d times\n", ++count);                                   }                                                                                                                                                                      int main ()                                                                         {                                                                                       struct sigaction sa;                                                               struct itimerval timer;                                                                                                                                                /* Install timer_handler as the signal handler for SIGVTALRM. */                   memset (&sa, 0, sizeof (sa));                                                       sa.sa_handler = &timer_handler;                                                     sigaction (SIGVTALRM, &sa, NULL);                                                                                                                                      /* Configure the timer to expire after 250 msec... */                               timer.it_value.tv_sec = 0;                                                         timer.it_value.tv_usec = 250000;                                                   /* ... and every 250 msec after that. */                                           timer.it_interval.tv_sec = 0;                                                       timer.it_interval.tv_usec = 250000;                                                 /* Start a virtual timer. It counts down whenever this process is                      executing. */                                                                   setitimer (ITIMER_VIRTUAL, &timer, NULL);                                                                                                                              /* Do busy work. */                                                                 while (1);                                                                     }

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Сообщение*:	>>> Нужен таймер, программный, чтобы допустим каждые 500 миллисекунд, основная программа прерывалась >>> (как по прерыванию) исполнялся определенный код, и снова продолжалась основная программа >>> ... >> http://docs.libuv.org/en/v1.x/timer.html > Ну или еще вот так: man setitimer > #include <signal.h> > #include <stdio.h> > #include <string.h> > #include <sys/time.h> > void timer_handler (int signum) > { > static int count = 0; > printf ("timer expired %d times\n", ++count); > } > int main () > { > struct sigaction sa; > struct itimerval timer; > /* Install timer_handler as the signal handler for > SIGVTALRM. */ > memset (&sa, 0, sizeof (sa)); > sa.sa_handler = &timer_handler; > sigaction (SIGVTALRM, &sa, NULL); > /* Configure the timer to expire after 250 > msec... */ > timer.it_value.tv_sec = 0; > timer.it_value.tv_usec = 250000; > /* ... and every 250 msec after that. > */ > timer.it_interval.tv_sec = 0; > timer.it_interval.tv_usec = 250000; > /* Start a virtual timer. It counts down > whenever this process is > executing. */ > setitimer (ITIMER_VIRTUAL, &timer, NULL); > /* Do busy work. */ > while (1); > }
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