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#if !defined(CCUTIL_TIMER_H)
#define CCUTIL_TIMER_H
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "log.h"
class timer {
public:
timer() : _initialized(false) {}
timer(int sig) {
struct sigevent ev;
memset(&ev, 0, sizeof(ev));
ev.sigev_notify = SIGEV_THREAD_ID;
ev.sigev_signo = sig;
ev._sigev_un._tid = gettid();
REQUIRE(timer_create(CLOCK_THREAD_CPUTIME_ID, &ev, &_timer) == 0)
<< "Failed to create timer!";
_initialized = true;
}
timer(timer&& other) {
_timer = other._timer;
_initialized = other._initialized;
other._initialized = false;
}
~timer() {
if(_initialized) {
REQUIRE(timer_delete(_timer) == 0) << "Failed to delete timer!";
}
}
void operator=(timer&& other) {
_timer = other._timer;
_initialized = other._initialized;
other._initialized = false;
}
void start_interval(size_t time_ns) {
ASSERT(_initialized) << "Can't start an uninitialized timer";
long ns = time_ns % 1000000000;
time_t s = (time_ns - ns) / 1000000000;
struct itimerspec ts;
memset(&ts, 0, sizeof(ts));
ts.it_interval.tv_sec = s;
ts.it_interval.tv_nsec = ns;
ts.it_value.tv_sec = s;
ts.it_value.tv_nsec = ns;
REQUIRE(timer_settime(_timer, 0, &ts, NULL) == 0) << "Failed to start interval timer";
_initialized = true;
}
void start_oneshot(size_t time_ns) {
ASSERT(_initialized) << "Can't start an uninitialized timer";
long ns = time_ns % 1000000000;
time_t s = (time_ns - ns) / 1000000000;
struct itimerspec ts;
memset(&ts, 0, sizeof(ts));
ts.it_value.tv_sec = s;
ts.it_value.tv_nsec = ns;
REQUIRE(timer_settime(_timer, 0, &ts, NULL) == 0) << "Failed to start one-shot timer";
}
private:
timer(const timer&) = delete;
void operator=(const timer&) = delete;
timer_t _timer;
bool _initialized;
};
#endif
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