static void /* Thread notification function */
threadFunc(union sigval sv)
{
timer_t *tidptr;
int s;
tidptr = sv.sival_ptr;
printf("[%s] Thread notify\n", currTime("%T"));
printf(" timer ID=%ld\n", (long) *tidptr);
printf(" timer_getoverrun()=%d\n", timer_getoverrun(*tidptr));
/* Increment counter variable shared with main thread and signal
condition variable to notify main thread of the change. */
s = pthread_mutex_lock(&mtx);
if (s != 0)
errExitEN(s, "pthread_mutex_lock");
expireCnt += 1 + timer_getoverrun(*tidptr);
s = pthread_mutex_unlock(&mtx);
if (s != 0)
errExitEN(s, "pthread_mutex_unlock");
s = pthread_cond_signal(&cond);
if (s != 0)
errExitEN(s, "pthread_cond_signal");
}
static void luasandbox_timer_handle_profiler(luasandbox_timer * lt)
{
// It's necessary to leave the timer running while we're not actually in
// Lua, and just ignore signals that occur outside it, because Linux timers
// don't fire with any kind of precision. Timer delivery is routinely delayed
// by milliseconds regardless of how short a time you ask for, and
// timer_gettime() just returns 1ns after the timer should have been delivered.
// So if a call takes 100us, there's no way to start a timer and have it be
// reliably delivered to within the function body, regardless of what you set
// it_value to.
php_luasandbox_obj * sandbox = lt->sandbox;
if (!sandbox || !sandbox->in_lua) {
return;
}
// Set a hook which will record profiling data (but don't overwrite the timeout hook)
if (!sandbox->timed_out) {
int overrun;
lua_State * L = sandbox->state;
lua_sethook(L, luasandbox_timer_profiler_hook,
LUA_MASKCOUNT | LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE, 1);
overrun = timer_getoverrun(sandbox->timer.profiler_timer->timer);
sandbox->timer.profiler_signal_count += overrun + 1;
sandbox->timer.overrun_count += overrun;
// Reset the hook if a timeout just occurred
if (sandbox->timed_out) {
lua_sethook(L, luasandbox_timer_timeout_hook,
LUA_MASKCOUNT | LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE, 1);
}
}
}
static void
handle_profiler_signal (int signal)
{
if (EQ (backtrace_top_function (), Qautomatic_gc))
/* Special case the time-count inside GC because the hash-table
code is not prepared to be used while the GC is running.
More specifically it uses ASIZE at many places where it does
not expect the ARRAY_MARK_FLAG to be set. We could try and
harden the hash-table code, but it doesn't seem worth the
effort. */
cpu_gc_count = saturated_add (cpu_gc_count, 1);
else
{
EMACS_INT count = 1;
#ifdef HAVE_ITIMERSPEC
if (profiler_timer_ok)
{
int overruns = timer_getoverrun (profiler_timer);
eassert (overruns >= 0);
count += overruns;
}
#endif
eassert (HASH_TABLE_P (cpu_log));
record_backtrace (XHASH_TABLE (cpu_log), count);
}
}
static void handler(int sig, siginfo_t *si, void *uc)
{
printf("[%s] Got signal %d\n", currTime("%T"), sig);
printf(" sival_int = %d\n", si->si_value.sival_int);
printf(" timer_getoverrun() = %d\n",
timer_getoverrun((timer_t) si->si_value.sival_ptr));
}
int main(int argc, char *argv[])
{
struct sigevent ev;
timer_t tid;
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGCONT;
if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
perror("timer_create() did not return success\n");
return PTS_UNRESOLVED;
}
if (timer_getoverrun(tid+1) == -1) {
if (EINVAL == errno) {
printf("fcn returned -1 and errno==EINVAL\n");
return PTS_PASS;
} else {
printf("fcn returned -1 but errno!=EINVAL\n");
printf("Test FAILED\n");
return PTS_FAIL;
}
}
printf("fcn did not return -1\n");
return PTS_PASS;
}
/*
* stress_timer_handler()
* catch timer signal and cancel if no more runs flagged
*/
static void MLOCKED_TEXT stress_timer_handler(int sig)
{
struct itimerspec timer;
sigset_t mask;
(void)sig;
if (!stress_timer_keep_stressing())
goto cancel;
timer_counter++;
if (sigpending(&mask) == 0)
if (sigismember(&mask, SIGINT))
goto cancel;
/* High freq timer, check periodically for timeout */
if ((timer_counter & 65535) == 0)
if ((time_now() - start) > (double)g_opt_timeout)
goto cancel;
if (g_keep_stressing_flag) {
int ret = timer_getoverrun(timerid);
if (ret > 0)
overruns += ret;
stress_timer_set(&timer);
return;
}
cancel:
g_keep_stressing_flag = false;
/* Cancel timer if we detect no more runs */
(void)memset(&timer, 0, sizeof(timer));
(void)timer_settime(timerid, 0, &timer, NULL);
}
static void handler(int sig, siginfo_t *si, void *uc)
{
printf("\n %s: \n",__func__);
timer_t *tidptr;
printf(" signal recvd %d\n", sig);
tidptr = si->si_value.sival_ptr;
printf(" timer_getoverrun() = %d\n", timer_getoverrun(*tidptr));
}
int test( void )
{
timer_t timerid = 0;
int result;
result = timer_getoverrun( timerid );
return result;
}
// use of printf() is UNSAFE
// use of current_time() is UNSAFE: not reentrant (static variable)
static void
signal_handler (int sig, siginfo_t *sigInfo_p, UNUSED void *uc)
{
timer_t *tid_p;
tid_p = sigInfo_p->si_value.sival_ptr;
printf ("[%s] got signal %d\n", current_time ("%T"), sig);
printf ("\t*sival_ptr = %ld\n", (long)*tid_p);
printf ("\ttimer_getoverrun() = %d\n", timer_getoverrun (*tid_p));
}
// Note this function is not async-signal safe. If you need to call this from a
// signal handler, you'll need to refactor the "Set a hook" part into a
// separate function and call that from the signal handler instead.
static void luasandbox_timer_handle_profiler(union sigval sv)
{
luasandbox_timer_callback_data * data = (luasandbox_timer_callback_data*)sv.sival_ptr;
php_luasandbox_obj * sandbox;
while (1) {
if (!data->sandbox) { // data is invalid
return;
}
if (!sem_wait(&data->semaphore)) { // Got the semaphore!
break;
}
if (errno != EINTR) { // Unexpected error, abort
return;
}
}
// It's necessary to leave the timer running while we're not actually in
// Lua, and just ignore signals that occur outside it, because Linux timers
// don't fire with any kind of precision. Timer delivery is routinely delayed
// by milliseconds regardless of how short a time you ask for, and
// timer_gettime() just returns 1ns after the timer should have been delivered.
// So if a call takes 100us, there's no way to start a timer and have it be
// reliably delivered to within the function body, regardless of what you set
// it_value to.
sandbox = data->sandbox;
if (!sandbox || !sandbox->in_lua) {
sem_post(&data->semaphore);
return;
}
// Set a hook which will record profiling data (but don't overwrite the timeout hook)
if (!sandbox->timed_out) {
int overrun;
lua_State * L = sandbox->state;
lua_sethook(L, luasandbox_timer_profiler_hook,
LUA_MASKCOUNT | LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE, 1);
overrun = timer_getoverrun(sandbox->timer.profiler_timer->timer);
sandbox->timer.profiler_signal_count += overrun + 1;
sandbox->timer.overrun_count += overrun;
// Reset the hook if a timeout just occurred
if (sandbox->timed_out) {
lua_sethook(L, luasandbox_timer_timeout_hook,
LUA_MASKCOUNT | LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE, 1);
}
}
sem_post(&data->semaphore);
}
static void
handler(int sig, siginfo_t *si, void *uc)
{
timer_t *tidptr;
tidptr = si->si_value.sival_ptr;
/* UNSAFE: This handler uses non-async-signal-safe functions
(printf(); see Section 21.1.2) */
printf("[%s] Got signal %d\n", currTime("%T"), sig);
printf(" *sival_ptr = %ld\n", (long) *tidptr);
printf(" timer_getoverrun() = %d\n", timer_getoverrun(*tidptr));
}
static void print_siginfo(siginfo_t *si)
{
timer_t *tidp;
int or;
tidp = si->si_value.sival_ptr;
printf(" sival_ptr = %p; ", si->si_value.sival_ptr);
printf(" *sival_ptr = 0x%lx\n", (long) *tidp);
or = timer_getoverrun(*tidp);
if (or == -1)
errExit("timer_getoverrun");
else
printf(" overrun count = %d\n", or);
}
void Timer::HandleOverrun(siginfo_t *info) {
// Process and log overruns.
timer_t *p_timer_id;
int overrun_count;
p_timer_id = static_cast<timer_t *>(info->si_value.sival_ptr);
overrun_count = timer_getoverrun(*p_timer_id);
if (overrun_count == -1) {
perror("timer_getoverrun");
printf("%s:%d\n", __FILE__, __LINE__);
exit(1);
} else {
if (overrun_count > 0) {
printf("overrun_count(%d)\n", overrun_count);
}
}
}
int main(int argc, char *argv[])
{
timer_t tid;
int tval = BOGUSTID;
tid = (timer_t) & tval;
if (timer_getoverrun(tid) == -1) {
if (EINVAL == errno) {
printf("fcn returned -1 and errno=EINVAL\n");
return PTS_PASS;
} else {
printf("fcn returned -1, but errno!=EINVAL\n");
printf("Test FAILED\n");
return PTS_FAIL;
}
}
printf("fcn did not return -1\n");
return PTS_PASS;
}
/*
* stress_timer_handler()
* catch timer signal and cancel if no more runs flagged
*/
static void MLOCKED stress_timer_handler(int sig)
{
struct itimerspec timer;
int ret;
(void)sig;
timer_counter++;
ret = timer_getoverrun(timerid);
if (ret > 0)
overruns += ret;
if (opt_do_run) {
stress_timer_set(&timer);
} else {
/* Cancel timer if we detect no more runs */
timer.it_value.tv_sec = 0;
timer.it_value.tv_nsec = 0;
timer.it_interval.tv_sec = 0;
timer.it_interval.tv_nsec = 0;
}
(void)timer_settime(timerid, 0, &timer, NULL);
}
void Thread::waitPeriod()
{
int sig;
sigwait(&(alarm_sig), &sig);
mWakeupsMissed += timer_getoverrun(mTimerfd);
}
void * task_c (void *arg)
{
int count;
struct timespec my_period;
int my_sig, received_sig;
struct itimerspec timerdata;
struct itimerspec timergetdata;
timer_t timer_id;
time_t clock;
struct sigevent event;
sigset_t set;
struct periodic_params *params;
params = arg;
my_period = params->period;
my_sig = params->signo;
/* timer create */
event.sigev_notify = SIGEV_SIGNAL;
event.sigev_signo = my_sig;
if (timer_create (CLOCK_REALTIME, &event, &timer_id) == -1) {
perror ("Error in timer creation\n");
rtems_test_exit(0);
}
/* block the timer signal */
sigemptyset (&set);
sigaddset (&set,my_sig);
pthread_sigmask(SIG_BLOCK,&set,NULL);
/* set the timer in periodic mode */
timerdata.it_interval = my_period;
timerdata.it_value = my_period;
timerdata.it_value.tv_sec *= 2;
if (timer_settime(timer_id,POSIX_TIMER_RELATIVE,&timerdata,NULL) == -1) {
perror ("Error in timer setting\n");
rtems_test_exit(0);
}
/* periodic activity */
for (count=0 ; ; count++) {
if (sigwait(&set,&received_sig) == -1) {
perror ("Error in sigwait\n");
rtems_test_exit(0);
}
if (timer_gettime(timer_id, &timerdata) == -1) {
perror ("Error in timer_gettime\n");
rtems_test_exit(0);
}
if (! _Timespec_Equal_to( &timerdata.it_value, &my_period) ){
perror ("Error in Task C timer_gettime\n");
}
pthread_mutex_lock (&data.mutex);
while (data.updated == FALSE) {
pthread_cond_wait (&data.sync,&data.mutex);
}
clock = time(NULL);
printf("Executing task C with count = %2i %s",
params->count, ctime(&clock)
);
if ( count && (count % 5) == 0 ) {
int overruns = 0;
sleep(1);
overruns = timer_getoverrun( timer_id );
printf( "task C: timer_getoverrun - overruns=%d\n", overruns );
if (timer_gettime(timer_id, &timergetdata) == -1) {
perror ("Error in timer setting\n");
rtems_test_exit(0);
}
printf(
"task C: timer_gettime - %" PRIdtime_t ":%ld remaining from %" PRIdtime_t ":%ld\n",
timergetdata.it_value.tv_sec, timergetdata.it_value.tv_nsec,
timergetdata.it_interval.tv_sec, timergetdata.it_interval.tv_nsec
);
}
pthread_mutex_unlock (&data.mutex);
params->count--;
if (params->count == 0)
StopTimer(timer_id, &timerdata);
}
return NULL;
}
int
main (int argc, char *argv[])
{
struct itimerspec ts;
struct sigevent sevent;
timer_t *tidlist_p;
int i;
sigset_t sigSet;
if (argc < 2) {
printf ("usage: %s <secs>[/<nsecs>][:<interval secs>[/<interval nsecs>]]...\n", argv[0]);
return 0;
}
tidlist_p = calloc (argc - 1, sizeof (timer_t));
if (tidlist_p == NULL) {
perror ("malloc()");
return 1;
}
sevent.sigev_notify = SIGEV_SIGNAL;
sevent.sigev_signo = TIMER_SIG;
sigemptyset (&sigSet);
sigaddset (&sigSet, TIMER_SIG);
sigprocmask (SIG_BLOCK, &sigSet, NULL);
for (i=0; i<argc-1; ++i) {
itimerspec_from_str (argv[i+1], &ts);
sevent.sigev_value.sival_ptr = &tidlist_p[i];
if (timer_create (CLOCK_REALTIME, &sevent, &tidlist_p[i]) == -1) {
perror ("timer_create()");
return 1;
}
printf ("timerID: %ld (%s)\n", (long)tidlist_p[i], argv[i+1]);
if (timer_settime (tidlist_p[i], 0, &ts, NULL) == -1) {
perror ("timer_settime()");
return 1;
}
}
while (1) {
int sig;
siginfo_t sigInfo;
timer_t *tid_p;
sig = sigwaitinfo (&sigSet, &sigInfo);
if (sig == -1) {
perror ("sigwaitinfo()");
return 1;
}
tid_p = sigInfo.si_value.sival_ptr;
printf ("[%s] got signal %d\n", current_time ("%T"), sig);
printf ("\t*sival_ptr = %ld\n", (long)*tid_p);
printf ("\ttimer_getoverrun() = %d\n", timer_getoverrun (*tid_p));
}
return 0;
}
int main()
{
sigset_t set;
struct sigevent ev;
timer_t tid;
struct itimerspec its;
int overruns;
if (sigemptyset(&set) != 0) {
perror("sigemptyset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigaddset(&set, SIGCONT) != 0) {
perror("sigaddset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigprocmask(SIG_SETMASK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGCONT;
/*
* create first timer
*/
if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
perror("timer_create() did not return success\n");
return PTS_UNRESOLVED;
}
its.it_interval.tv_sec = INTERVALSEC;
its.it_interval.tv_nsec = 0;
its.it_value.tv_sec = VALUESEC;
its.it_value.tv_nsec = 0;
if (timer_settime(tid, 0, &its, NULL) != 0) {
perror("timer_settime() did not return success\n");
return PTS_UNRESOLVED;
}
sleep(VALUESEC+2*INTERVALSEC+1);
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
overruns = timer_getoverrun(tid);
if (EXPECTEDOVERRUNS == overruns) {
printf("Test PASSED\n");
return PTS_PASS;
} else {
printf("FAIL: %d overruns sent; expected %d\n",
overruns, EXPECTEDOVERRUNS);
return PTS_FAIL;
}
printf("UNRESOLVED: This code should not be executed.\n");
return PTS_UNRESOLVED;
}
void CUstpFtdcMduserApi::SendOneQuote(int sig, siginfo_t *si, void *uc)
{
int ret = 0;
int iOldErr;
int iOverRun;
char sendBuf[BUFSIZE] = {0};
MsgHead stHead;
int iSendLen = 0;
char * pSendBuf = NULL;
CUstpFtdcDepthMarketDataField data;
//在信号处理函数开始时保存errno
iOldErr = errno;
CUstpFtdcMduserApi* pObj = (CUstpFtdcMduserApi*)si->si_value.sival_ptr;
iOverRun = timer_getoverrun(pObj->m_timerid);
if (-1 == iOverRun)
{
printf_blue("timer_getoverrun() return %d.\n",iOverRun);//g_log.error
}
else
{
printf_blue("timer_getoverrun() return %d.\n",iOverRun);
}
//no instrument subscribed
if(NULL == pObj->m_pInstrSubSucc)
{
errno = iOldErr; //在信号处理函数结束的时候恢复被中断线程的 errno 值
g_log.error("No instrument subscribed !\n");
return ;
}
if(ATF_SUCC == pObj->m_QuoteQueue.PopOneData(&data))
{
AddQuoteCnt();
SubscribeInstrument *pTmp = pObj->m_pInstrSubSucc;
while(pTmp != NULL)
{
printf_green("ready to send a quote\n");
strcpy(data.InstrumentID,pTmp->instrument);
pObj->m_FtdcMdSpi_instance->OnRtnDepthMarketData(&data);
pTmp = pTmp->pNext;
}
}
else
{
//read quote over
if((1 == pObj->m_quoteFetcher.GetFlagQuoteReadOver()))
{
if(true == pObj->m_bQuoteOver)
{
errno = iOldErr; //在信号处理函数结束的时候恢复被中断线程的 errno 值
return;
}
printf_green("read quote over\n");
pObj->m_bQuoteOver = true;
pObj->m_quoteFetcher.Terminate();
memset(sendBuf,0,sizeof(sendBuf));
memset(&stHead,0,sizeof(stHead));
//send msg to ATF
ResultOfSendQuote result;
result.isSucc = true;
pSendBuf = sendBuf;
stHead.iMsgID = htons(MSGID_C2S_QUOTE_RESULT_SEND_QUOTE);
stHead.iMsgBodyLen = htons(sizeof(ResultOfSendQuote));
memcpy(pSendBuf , &stHead, sizeof(stHead));
memcpy(pSendBuf+sizeof(stHead),&result,sizeof(result));
iSendLen = sizeof(stHead) + sizeof(result);
ret = TcpSendData(pObj->m_fdConnQuoteSvr,(char*)pSendBuf,iSendLen);
if(ret != iSendLen)
{
g_log.error("[MSGID_C2S_QUOTE_RESULT_SEND_QUOTE]TCP send error,expect %dB,actual %dB.\n",iSendLen,ret);
errno = iOldErr; //在信号处理函数结束的时候恢复被中断线程的 errno 值
return ;
}
g_log.debug("[MSGID_C2S_QUOTE_RESULT_SEND_QUOTE]TCP send %dB \n",ret);
}
else
{
g_log.error("quote pop error!\n");
}
}
errno = iOldErr; //在信号处理函数结束的时候恢复被中断线程的 errno 值
return ;
}
int main()
{
#ifndef _POSIX_REALTIME_SIGNALS
printf("_POSIX_REALTIME_SIGNALS is not defined\n");
return PTS_UNTESTED;
#endif
sigset_t set;
struct sigevent ev;
timer_t tid;
struct itimerspec its;
struct timespec tssleep, tsres;
int overruns;
int valuensec, intervalnsec, expectedoverruns;
int fudge;
if (sigemptyset(&set) != 0) {
perror("sigemptyset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigaddset(&set, SIGCONT) != 0) {
perror("sigaddset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigprocmask(SIG_SETMASK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGCONT;
/*
* create first timer
*/
if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
perror("timer_create() did not return success\n");
return PTS_UNRESOLVED;
}
if (clock_getres(CLOCK_REALTIME, &tsres) != 0) {
perror("clock_gettime() did not return success\n");
return PTS_UNRESOLVED;
}
if (tsres.tv_sec != 0) {
printf("Clock resolution in seconds, not nsecs. Exiting.\n");
return PTS_UNRESOLVED;
}
valuensec = tsres.tv_nsec;
intervalnsec = 2 * valuensec;
//expectedoverruns = (1000000000 - valuensec) / intervalnsec;
expectedoverruns = 1000000000 / intervalnsec - 1;
printf("value = %d sec, interval = %d nsec, "
"expected overruns = %d\n", 1, intervalnsec, expectedoverruns);
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = intervalnsec;
its.it_value.tv_sec = 1;
its.it_value.tv_nsec = 0;
//its.it_value.tv_sec = 0;
//its.it_value.tv_nsec = valuensec;
if (timer_settime(tid, 0, &its, NULL) != 0) {
perror("timer_settime() did not return success\n");
return PTS_UNRESOLVED;
}
//tssleep.tv_nsec = valuensec + (expectedoverruns*intervalnsec);
tssleep.tv_nsec = 0;
tssleep.tv_sec = 2;
if (nanosleep(&tssleep, NULL) != 0) {
perror("nanosleep() did not return success\n");
return PTS_UNRESOLVED;
}
/*
* Since the overrun count is only meaningful with respect
* to a particular timer expiry disable the timer before
* un-blocking the signal. This ensures that there is only
* one expiry and it should have a meaningful overrun count.
*/
//its.it_interval.tv_sec = 0;
//its.it_interval.tv_nsec = 0;
//its.it_value.tv_sec = 0;
//its.it_value.tv_nsec = 0;
//if (timer_settime(tid, 0, &its, NULL) != 0) {
// perror("timer_settime() did not return success\n");
// return PTS_UNRESOLVED;
//}
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
overruns = timer_getoverrun(tid);
printf("%d overruns occurred\n", overruns);
/*
* Depending on the clock resolution we may have a few
* extra expiries after the nanosleep completes so do
* a range check.
*/
fudge = expectedoverruns / 100;
if (overruns >= expectedoverruns && overruns < expectedoverruns + fudge) {
printf("Test PASSED\n");
return PTS_PASS;
} else {
printf("FAIL: %d overruns sent; expected %d\n",
overruns, expectedoverruns);
return PTS_FAIL;
}
printf("UNRESOLVED: This code should not be executed.\n");
return PTS_UNRESOLVED;
}
int main()
{
sigset_t set;
struct sigevent ev;
timer_t tid;
struct itimerspec its;
struct timespec ts, tsres;
int overruns;
if (sigemptyset(&set) != 0) {
perror("sigemptyset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigaddset(&set, SIGCONT) != 0) {
perror("sigaddset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigprocmask(SIG_SETMASK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGCONT;
/*
* create first timer
*/
if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
perror("timer_create() did not return success\n");
return PTS_UNRESOLVED;
}
if (clock_getres(CLOCK_REALTIME, &tsres) != 0) {
perror("clock_gettime() did not return success\n");
return PTS_UNRESOLVED;
}
if (tsres.tv_sec != 0) {
printf("Clock resolution in seconds, not nsecs. Exiting.\n");
return PTS_UNRESOLVED;
}
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = tsres.tv_nsec;
its.it_value.tv_sec = 0;
its.it_value.tv_nsec = VALUENSEC;
if (timer_settime(tid, 0, &its, NULL) != 0) {
perror("timer_settime() did not return success\n");
return PTS_UNRESOLVED;
}
ts.tv_nsec = VALUENSEC + ((EXPECTEDOVERRUNS) * its.it_interval.tv_nsec);
ts.tv_sec = 0;
if (nanosleep(&ts, NULL) != 0) {
perror("nanosleep() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
overruns = timer_getoverrun(tid);
if (overruns > EXPECTEDOVERRUNS - 5) {
printf("Test PASSED\n");
return PTS_PASS;
} else {
printf("FAIL: %d overruns sent; expected %d\n",
overruns, EXPECTEDOVERRUNS);
return PTS_FAIL;
}
}
int main()
{
struct sigevent ev;
struct sigaction act;
timer_t tid;
struct itimerspec its;
int overruns;
sigset_t set;
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGTOTEST;
act.sa_handler=handler;
act.sa_flags=0;
/*
* set up handler for SIGTOTEST
*/
if (sigemptyset(&act.sa_mask) != 0) {
perror("sigemptyset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigaction(SIGTOTEST, &act, 0) != 0) {
perror("sigaction() did not return success\n");
return PTS_UNRESOLVED;
}
/*
* set up timer to send SIGTOTEST
*/
if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
perror("timer_create() did not return success\n");
return PTS_UNRESOLVED;
}
its.it_interval.tv_sec = TIMERINTERVAL;
its.it_interval.tv_nsec = 0;
its.it_value.tv_sec = TIMERVAL;
its.it_value.tv_nsec = 0;
if (timer_settime(tid, 0, &its, NULL) != 0) {
perror("timer_settime() did not return success\n");
return PTS_UNRESOLVED;
}
/*
* block signal SIGTOTEST
*/
if (sigemptyset(&set) != 0) {
perror("sigemptyset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigaddset(&set, SIGTOTEST) != 0) {
perror("sigaddset() did not return success\n");
return PTS_UNRESOLVED;
}
if (sigprocmask(SIG_SETMASK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
if (sleep(2*TIMERINTERVAL + TIMERVAL) != 0) {
perror("Could not sleep for correct amount of time\n");
return PTS_UNRESOLVED;
}
if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) {
perror("sigprocmask() did not return success\n");
return PTS_UNRESOLVED;
}
overruns = timer_getoverrun(tid);
printf("Total overruns: %d\n", overruns);
if (1 == madeit) {
printf("Test PASSED\n");
return PTS_PASS;
} else {
printf("FAIL: %d signals sent\n", madeit);
return PTS_FAIL;
}
printf("UNRESOLVED: This code should not be executed.\n");
return PTS_UNRESOLVED;
}
int main(int argc, char **argv)
{
sigset_t la_de_tim;
struct sigaction accion;
int i;
int over;
struct timespec interv = { 1, 0}; /* Un segundo */
struct timespec parada = { 10, 500000000L}; /* 10.5 segundos */
struct timespec doscmseg = { 0, 200000000L}; /* 200 milisegundos */
struct timespec cero = { 0, 0};
struct timespec ahora;
struct timespec antes;
struct timespec inicial;
struct timespec resolu;
struct itimerspec tempo;
int res;
float media;
float intrv;
timer_t mitimer;
struct sigevent evento;
siginfo_t info;
sigset_t launo;
/* Observando caracteristicas del reloj */
clock_getres(CLOCK_REALTIME, &resolu);
printf("El reloj tiene resolucion de %ld seg %ld nanoseg\n",
(long)resolu.tv_sec, (long)resolu.tv_nsec);
/* Probando el reloj con "sleep" */
media = 0.;
res = clock_gettime(CLOCK_REALTIME, &antes);
inicial = antes;
for(i=0; i<NTST; i++)
{
res = sleep(1);
clock_gettime(CLOCK_REALTIME, &ahora);
intrv = lapso(antes, ahora);
/* Perdida de tiempo intermedia */
nanosleep(&doscmseg, NULL);
/* Trazadores */
/* Se ignoran los 2 primeros datos */
media += intrv;
printf("Intervalo %f sg. Total %f sg. Desv. desde comienzo: %f sg.\n",
intrv,
lapso(inicial, ahora),
lapso(inicial, ahora) - (double)(i+1));
antes = ahora;
}
printf("Media de intervalos %f\n", media/NTST);
/* Probando temporizadores */
/* Primero, programados para un solo disparo */
printf("probando temporizadores de un solo disparo\n");
tempo.it_value = interv;
tempo.it_interval = cero;
/* Le asocio la segnal SIGRTMIN */
/* 1: La programo de tiempo real */
sigemptyset(&accion.sa_mask);
accion.sa_flags = SA_SIGINFO;
accion.sa_sigaction = manejador;
sigaction(SIGRTMIN, &accion, NULL);
/* 2: La bloqueo en la mascara de proceso */
sigemptyset(&la_de_tim);
sigaddset(&la_de_tim, SIGRTMIN);
sigprocmask(SIG_BLOCK, &la_de_tim, NULL);
/* 3: Preparo sigevent para ponerla como evento de temporizador */
evento.sigev_signo = SIGRTMIN;
evento.sigev_notify = SIGEV_SIGNAL;
evento.sigev_value.sival_int = 77;
/* Creo el temporizador */
i = timer_create(CLOCK_REALTIME, &evento, &mitimer);
if(i==-1) printf("error en timer_create\n");
/* Lo programo de un disparo */
i = timer_settime(mitimer, 0, &tempo, NULL);
/* Espero la segnal sincronamente */
sigemptyset(&launo);
sigaddset(&launo, SIGRTMIN);
sigwaitinfo(&launo, &info);
printf("vencido temporizador de un disp.; valor de la segnal: %d\n",
info.si_value.sival_int);
timer_delete(mitimer);
/* Ahora ciclico */
printf("probando temporizadores ciclicos con intervalo de 1 segundo\n");
tempo.it_interval = interv;
/* Le cambio el valor de entrega, solo por probar */
evento.sigev_value.sival_int = 88;
timer_create(CLOCK_REALTIME, &evento, &mitimer);
timer_settime(mitimer, 0, &tempo, NULL);
timer_gettime(mitimer, &tempo);
printf("Valor programado: %ld sg % ld nsg\n",
(long)tempo.it_interval.tv_sec,
tempo.it_interval.tv_nsec);
/* Espero la segnal */
/* Se activa varias veces sin que se detecte segnal -> overrun */
nanosleep(¶da, NULL);
/* Ahora se esperan las senales generadas y se mide el intervalo */
media = 0.;
clock_gettime(CLOCK_REALTIME, &antes);
for(i=0; i<NTST1; i++)
{
sigwaitinfo(&launo, &info);
clock_gettime(CLOCK_REALTIME, &ahora);
over = timer_getoverrun(mitimer);
intrv = lapso(antes, ahora);
/* Perdida de tiempo intermedia */
nanosleep(&doscmseg, NULL);
/* Trazadores */
if(i==2) inicial = ahora;
if(i>1) /* Se ignoran los 2 primeros, que son anomalos */
{
if(over > 0) printf("Overrun de %d!\n", over);
media += intrv;
printf("Intervalo %f seg. Total de %f seg. Desv. desde el com.: %f\n",
intrv,
lapso(inicial, ahora),
lapso(inicial, ahora) - (i-2));
}
else
{
printf("Intervalo %f, ovr.: %d, valor de segnal: %d\n",
intrv, over, info.si_value.sival_int);
}
antes = ahora;
}
printf("Media de intervalos %f\n", media/(NTST1-2));
timer_delete(mitimer);
}
int main(int argc, char *argv[])
{
struct sigevent ev;
struct sigaction act;
struct timespec tpT0, tpclock, tpreset;
struct itimerspec its;
timer_t tid;
int flags = 0, overruns;
/*
* set up sigevent for timer
* set up sigaction to catch signal
*/
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGTOTEST;
act.sa_handler=handler;
act.sa_flags=0;
if (sigemptyset(&act.sa_mask) != 0) {
perror("sigemptyset() was not successful\n");
return PTS_UNRESOLVED;
}
if (sigaction(SIGTOTEST, &act, 0) != 0) {
perror("sigaction() was not successful\n");
return PTS_UNRESOLVED;
}
if (clock_gettime(CLOCK_REALTIME, &tpT0) != 0) {
perror("clock_gettime() was not successful\n");
return PTS_UNRESOLVED;
}
if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
perror("timer_create() did not return success\n");
return PTS_UNRESOLVED;
}
flags |= TIMER_ABSTIME;
its.it_interval.tv_sec = TIMERINTERVAL;
its.it_interval.tv_nsec = 0;
its.it_value.tv_sec = tpT0.tv_sec + TIMEROFFSET;
its.it_value.tv_nsec = tpT0.tv_nsec;
if (timer_settime(tid, flags, &its, NULL) != 0) {
perror("timer_settime() did not return success\n");
return PTS_UNRESOLVED;
}
tpclock.tv_sec = its.it_value.tv_sec + EXPECTEDOVERRUNS*TIMERINTERVAL;
tpclock.tv_nsec = its.it_value.tv_nsec;
getBeforeTime(&tpreset);
if (clock_settime(CLOCK_REALTIME, &tpclock) != 0) {
printf("clock_settime() was not successful\n");
return PTS_UNRESOLVED;
}
sleep(SHORTTIME);
overruns = timer_getoverrun(tid);
if (overruns == EXPECTEDOVERRUNS) {
printf("Overrun count == # of repeating timer expirys\n");
} else {
printf("Overrun count =%d, not # of repeating timer expirys\n",
overruns);
}
tpreset.tv_sec += SHORTTIME;
setBackTime(tpreset);
if (caught == 1) {
printf("Caught the correct number of signals\n");
} else {
printf("FAIL: Caught %d signals, not 1\n", caught);
printf("Test FAILED\n");
return PTS_FAIL;
}
printf("Test PASSED\n");
return PTS_PASS;
}