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Handle a signal: Difference between revisions
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user code normally does not need to care for this
(except for those who want to change that very runtime system behavior ;-).
=={{header|Swift}}==
{{trans|C}}
<lang swift>import Foundation
let startTime = NSDate()
var signalReceived: sig_atomic_t = 0
signal(SIGINT) { signal in signalReceived = 1 }
for var i = 0;; {
if signalReceived == 1 { break }
usleep(500_000)
if signalReceived == 1 { break }
print(++i)
}
let endTime = NSDate()
print("Program has run for \(endTime.timeIntervalSinceDate(startTime)) seconds")
</lang>
=={{header|Tcl}}==
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