func lowerWindow(c1 chan string, cycles int64) {
C.init_perfcounters(1, 0)
timeStart := C.ulonglong(C.get_cyclecount())
for {
timeElapsed := C.ulonglong(C.get_cyclecount()) - timeStart
if timeElapsed > C.ulonglong(cycles) {
c1 <- "ENTER WINDOW\n"
break
}
}
}
func waitTimer(cycles int64, f *os.File) int {
// init counters:
C.init_perfcounters(1, 0)
//fmt.Printf("cyles to wait: %d\n", cycles)
timeStart := C.ulonglong(C.get_cyclecount())
timeElapsed := C.ulonglong(0)
for {
timeElapsed = C.ulonglong(C.get_cyclecount()) - timeStart
if timeElapsed > C.ulonglong(cycles) {
writeMessage(f, fmt.Sprintf("%27s", "COMPLETE"))
break
}
}
return int(timeElapsed)
}
func main() {
// init counters:
C.init_perfcounters(1, 0)
// measure the counting overhead:
overhead := C.get_cyclecount()
overhead = C.get_cyclecount() - overhead
sleeptime := time.Duration(1) * time.Second
t := C.get_cyclecount()
time.Sleep(sleeptime) //delay
//fmt.Println("test data to benchmark Println function call")
t = C.get_cyclecount() - t
fmt.Printf("Sleeping took exactly %d cycles and overhead of get_cyclecount() was %d cycles\n", t-overhead, overhead)
}