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Sleep Function

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  • M Offline
    M Offline
    MsmVc
    wrote on last edited by
    #1

    Hi all I have question about Sleep Function.If i use Sleep function and set sleep values 30mins. But After 10mins i want to change Sleep values like 1mins or 2min. Is it possible.Please advice me.

    C C C S _ 5 Replies Last reply
    0
    • M MsmVc

      Hi all I have question about Sleep Function.If i use Sleep function and set sleep values 30mins. But After 10mins i want to change Sleep values like 1mins or 2min. Is it possible.Please advice me.

      C Offline
      C Offline
      CPallini
      wrote on last edited by
      #2

      Yes, it is possible: just set the Sleep interval to 1 minute (or whatever appropriate) and iterate it 30 times, then, whenever you need to shorten the wait delay, decrease the iteration limit. :)

      If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
      This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
      [My articles]

      G 1 Reply Last reply
      0
      • M MsmVc

        Hi all I have question about Sleep Function.If i use Sleep function and set sleep values 30mins. But After 10mins i want to change Sleep values like 1mins or 2min. Is it possible.Please advice me.

        C Offline
        C Offline
        Cedric Moonen
        wrote on last edited by
        #3

        On the other hand, if you have to use a sleep of 30 minutes, it is likely that your design could be improved. For what reason do you need to sleep so long ?

        Cédric Moonen Software developer
        Charting control [v3.0] OpenGL game tutorial in C++

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        • C CPallini

          Yes, it is possible: just set the Sleep interval to 1 minute (or whatever appropriate) and iterate it 30 times, then, whenever you need to shorten the wait delay, decrease the iteration limit. :)

          If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
          This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
          [My articles]

          G Offline
          G Offline
          GAJERA
          wrote on last edited by
          #4

          But if you give sleep 1 hour, then what happen? I think it is not possible or we need to interrupt hardware.

          C 1 Reply Last reply
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          • G GAJERA

            But if you give sleep 1 hour, then what happen? I think it is not possible or we need to interrupt hardware.

            C Offline
            C Offline
            CPallini
            wrote on last edited by
            #5

            Well, you may use WaitForSingleObject instead. :)

            If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
            This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
            [My articles]

            G 1 Reply Last reply
            0
            • C CPallini

              Well, you may use WaitForSingleObject instead. :)

              If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
              This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
              [My articles]

              G Offline
              G Offline
              GAJERA
              wrote on last edited by
              #6

              OK,but How we stop sleep function? as we already put sleep for 1 hour.

              C 1 Reply Last reply
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              • M MsmVc

                Hi all I have question about Sleep Function.If i use Sleep function and set sleep values 30mins. But After 10mins i want to change Sleep values like 1mins or 2min. Is it possible.Please advice me.

                C Offline
                C Offline
                Chris Meech
                wrote on last edited by
                #7

                What you are looking for is a WakeUp function. Unfortunately it doesn't exist. Since your thread is effectively blocked on Sleep, you need to handle this differently. This article [^] may give you some idea of how to accomplish what you are looking for.

                Chris Meech I am Canadian. [heard in a local bar] In theory there is no difference between theory and practice. In practice there is. [Yogi Berra]

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                • G GAJERA

                  OK,but How we stop sleep function? as we already put sleep for 1 hour.

                  C Offline
                  C Offline
                  CPallini
                  wrote on last edited by
                  #8

                  You cannot stop it (well, without a hammer...). :)

                  If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                  This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                  [My articles]

                  G 1 Reply Last reply
                  0
                  • M MsmVc

                    Hi all I have question about Sleep Function.If i use Sleep function and set sleep values 30mins. But After 10mins i want to change Sleep values like 1mins or 2min. Is it possible.Please advice me.

                    S Offline
                    S Offline
                    Stephen Hewitt
                    wrote on last edited by
                    #9

                    You say you want to sleep for 30 minutes but might at a later stage decide to alter the duration. This begs the following question: Who is doing the deciding? If you've called Sleep[^] with the full duration it obviously can't be the calling thread because it's sleeping. Some possible solutions are:

                    • Sleep for a shorter duration and periodically check on the same thread (do this in a loop).
                    • Use the WaitForSingleObject[^] function with the dwMilliseconds parameter set to 30 minutes and for the hHandle parameter use a synchronisation object signalled by another thread (to abort the sleep).

                    Steve

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                    • M MsmVc

                      Hi all I have question about Sleep Function.If i use Sleep function and set sleep values 30mins. But After 10mins i want to change Sleep values like 1mins or 2min. Is it possible.Please advice me.

                      _ Offline
                      _ Offline
                      _Superman_
                      wrote on last edited by
                      #10

                      Depending on your requirement, you could probably use SleepEx.

                      «_Superman_»
                      I love work. It gives me something to do between weekends.

                      Microsoft MVP (Visual C++)

                      Polymorphism in C

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                      • C CPallini

                        You cannot stop it (well, without a hammer...). :)

                        If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                        This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                        [My articles]

                        G Offline
                        G Offline
                        GAJERA
                        wrote on last edited by
                        #11

                        Thanks

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