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Setitimer (ITIMER_VIRTUAL, &timer, NULL) * Configure the timer to expire after 250 msec.
ITIMER C UNIX INSTALL
* Install timer_handler as the signal handler for SIGVTALRM. Printf ("timer expired %d times\n", ++count) Listing 8.11 ( itemer.c) Timer Example #include Milliseconds and send a SIGVTALRM signal. A timer is configured to expire every 250 The program in Listing 8.11 illustrates the use of setitimer to The struct timeval type is described in Section 8.7, The value to which the timer will be reset after it expires. It_interval is another struct timeval field containing Time until the timer next expires and a signal is sent. It_value is a struct timeval field that contains the Null, is a pointer to another struct itimerval object that receives theĪ struct itimerval variable has two fields: Object specifying the new settings for that timer. The second argument is a pointer to a struct itimerval The first argument to setitimer is the timer code, specifying which Process's own execution or the execution of a system call on behalf of the SIGPROF signal when the specified time has elapsed either during the
ITIMER C UNIX CODE
If the timer code is ITIMER_PROF, the process is sent a Time in which the process is not executing (that is, when the kernel or another SIGVTALRM signal after the process has executed for the specified time.
If the timer code is ITIMER_VIRTUAL, the process is sent a SIGALRM signal after the specified wall-clock time has
If the timer code is ITIMER_REAL, the process is sent a It schedules the delivery of a signal at some point in the future after aĪ program can set three different types of timers with setitimer: The setitimer system call is a generalization of the alarmĬall. Learn More Buy 8.13 setitimer: Setting Interval Timers
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