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discard """
output: '''
OK
OK
OK
OK
'''
"""
when defined(upcoming):
import asyncdispatch, times, osproc, streams
const supportedPlatform = defined(linux) or defined(freebsd) or
defined(netbsd) or defined(openbsd) or
defined(macosx)
proc waitEvent(ev: AsyncEvent, closeEvent = false): Future[void] =
var retFuture = newFuture[void]("waitEvent")
proc cb(fd: AsyncFD): bool =
retFuture.complete()
if closeEvent:
return true
else:
return false
addEvent(ev, cb)
return retFuture
proc waitTimer(timeout: int): Future[void] =
var retFuture = newFuture[void]("waitTimer")
proc cb(fd: AsyncFD): bool =
retFuture.complete()
addTimer(timeout, true, cb)
return retFuture
proc waitProcess(p: Process): Future[void] =
var retFuture = newFuture[void]("waitProcess")
proc cb(fd: AsyncFD): bool =
retFuture.complete()
addProcess(p.processID(), cb)
return retFuture
proc delayedSet(ev: AsyncEvent, timeout: int): Future[void] {.async.} =
await waitTimer(timeout)
ev.setEvent()
proc timerTest() =
var timeout = 200
var errorRate = 40.0
var start = epochTime()
waitFor(waitTimer(200))
var finish = epochTime()
var lowlimit = float(timeout) - float(timeout) * errorRate / 100.0
var highlimit = float(timeout) + float(timeout) * errorRate / 100.0
var elapsed = (finish - start) * 1_000 # convert to milliseconds
if elapsed >= lowlimit and elapsed < highlimit:
echo "OK"
else:
echo "timerTest: Timeout = " & $(elapsed) & ", but must be inside of [" &
$lowlimit & ", " & $highlimit & ")"
proc eventTest() =
var event = newAsyncEvent()
var fut = waitEvent(event)
asyncCheck(delayedSet(event, 500))
waitFor(fut or waitTimer(1000))
if fut.finished:
echo "OK"
else:
echo "eventTest: Timeout expired before event received!"
proc processTest() =
when defined(windows):
var process = startProcess("ping.exe", "",
["127.0.0.1", "-n", "2", "-w", "100"], nil,
{poStdErrToStdOut, poUsePath, poInteractive,
poDemon})
else:
var process = startProcess("/bin/sleep", "", ["1"], nil,
{poStdErrToStdOut, poUsePath})
var fut = waitProcess(process)
waitFor(fut or waitTimer(2000))
if fut.finished and process.peekExitCode() == 0:
echo "OK"
else:
echo "processTest: Timeout expired before process exited!"
when supportedPlatform:
import posix
proc waitSignal(signal: int): Future[void] =
var retFuture = newFuture[void]("waitSignal")
proc cb(fd: AsyncFD): bool =
retFuture.complete()
addSignal(signal, cb)
return retFuture
proc delayedSignal(signal: int, timeout: int): Future[void] {.async.} =
await waitTimer(timeout)
var pid = posix.getpid()
discard posix.kill(pid, signal.cint)
proc signalTest() =
var fut = waitSignal(posix.SIGINT)
asyncCheck(delayedSignal(posix.SIGINT, 500))
waitFor(fut or waitTimer(1000))
if fut.finished:
echo "OK"
else:
echo "signalTest: Timeout expired before signal received!"
when supportedPlatform:
timerTest()
eventTest()
processTest()
signalTest()
elif defined(windows):
timerTest()
eventTest()
processTest()
echo "OK"
else:
eventTest()
echo "OK\nOK\nOK"
else:
echo "OK\nOK\nOK\nOK"
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