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Scheduled Pinned Locked Moved C / C++ / MFC
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  • S susanne1

    Hallo, I have the following problem with the Thread: I create the Thread first as SUSPENDED, but it does not start at the expectetd time. First the Program calls this function: ThreadStart(); /////////////////////////////// ThreadStart() { if (m_pSelThread != NULL) { if (::WaitForSingleObject(m_pSelThread->m_hThread, 0) != WAIT_OBJECT_0) return; delete m_pSelThread; m_pSelThread = NULL; } ::WaitForSingleObject(m_SEl_Start_Event, 0); m_SEl_Start_Event.SetEvent (); // CEvent Object CWinThread* m_pSelThread = AfxBeginThread(ThreadFunktion, this, THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED); m_pSelThread->m_bAutoDelete = FALSE; m_pSelThread->ResumeThread(); } UINT ThreadFunktion ( LPVOID param ) { if (param == NULL) return -1; DoSomeThing(); return 0; } The Thread does not come to the UINT ThreadFunktion(LPVOID param). Any help would be appriciated.

    CPalliniC Offline
    CPalliniC Offline
    CPallini
    wrote on last edited by
    #4

    susanne1 wrote:

    ::WaitForSingleObject(m_SEl_Start_Event, 0);

    What is the purpose of the above call? :)

    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]

    In testa che avete, signor di Ceprano?

    S 1 Reply Last reply
    0
    • CPalliniC CPallini

      susanne1 wrote:

      ::WaitForSingleObject(m_SEl_Start_Event, 0);

      What is the purpose of the above call? :)

      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]

      S Offline
      S Offline
      susanne1
      wrote on last edited by
      #5

      to wait for the event to happen.

      CPalliniC 1 Reply Last reply
      0
      • S susanne1

        Hallo, I have the following problem with the Thread: I create the Thread first as SUSPENDED, but it does not start at the expectetd time. First the Program calls this function: ThreadStart(); /////////////////////////////// ThreadStart() { if (m_pSelThread != NULL) { if (::WaitForSingleObject(m_pSelThread->m_hThread, 0) != WAIT_OBJECT_0) return; delete m_pSelThread; m_pSelThread = NULL; } ::WaitForSingleObject(m_SEl_Start_Event, 0); m_SEl_Start_Event.SetEvent (); // CEvent Object CWinThread* m_pSelThread = AfxBeginThread(ThreadFunktion, this, THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED); m_pSelThread->m_bAutoDelete = FALSE; m_pSelThread->ResumeThread(); } UINT ThreadFunktion ( LPVOID param ) { if (param == NULL) return -1; DoSomeThing(); return 0; } The Thread does not come to the UINT ThreadFunktion(LPVOID param). Any help would be appriciated.

        R Offline
        R Offline
        Rajesh R Subramanian
        wrote on last edited by
        #6

        Can't you just start the thread and wait for the event to happen within the thread before executing code? What's all this mess about? Why are you setting the m_bAutoDelete member to false? I see you may delete it manually, but *what* is the purpose of it?

        It is a crappy thing, but it's life -^ Carlo Pallini

        S CPalliniC 2 Replies Last reply
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        • R Rajesh R Subramanian

          Can't you just start the thread and wait for the event to happen within the thread before executing code? What's all this mess about? Why are you setting the m_bAutoDelete member to false? I see you may delete it manually, but *what* is the purpose of it?

          It is a crappy thing, but it's life -^ Carlo Pallini

          S Offline
          S Offline
          susanne1
          wrote on last edited by
          #7

          the thread mus t be created but not start immediately, autodelte false to tell him not to delet himself.

          R 1 Reply Last reply
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          • S susanne1

            to wait for the event to happen.

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

            That doesn't make sense. Anyway I made a test on my system: Without hiding the class member variable, the thread starts happily. :)

            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]

            In testa che avete, signor di Ceprano?

            1 Reply Last reply
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            • S susanne1

              the thread mus t be created but not start immediately, autodelte false to tell him not to delet himself.

              R Offline
              R Offline
              Rajesh R Subramanian
              wrote on last edited by
              #9

              So, why should it not start immediately? Can't you just start it immediately, but not execute any code until the interested event happens? I asked for the reason behind your approach. I did not ask you what m_bAutoDelete is for. Tell me why do *you* want the thread not to delete itself.

              It is a crappy thing, but it's life -^ Carlo Pallini

              1 Reply Last reply
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              • R Rajesh R Subramanian

                Can't you just start the thread and wait for the event to happen within the thread before executing code? What's all this mess about? Why are you setting the m_bAutoDelete member to false? I see you may delete it manually, but *what* is the purpose of it?

                It is a crappy thing, but it's life -^ Carlo Pallini

                CPalliniC Offline
                CPalliniC Offline
                CPallini
                wrote on last edited by
                #10

                Rajesh R Subramanian wrote:

                Why are you setting the m_bAutoDelete member to false? I see you may delete it manually, but *what* is the purpose of it?

                Well you may want to do that, I mean that's nothing wrong in doing it (and that's the reason for delaying the thread start). :)

                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]

                In testa che avete, signor di Ceprano?

                R 1 Reply Last reply
                0
                • CPalliniC CPallini

                  Rajesh R Subramanian wrote:

                  Why are you setting the m_bAutoDelete member to false? I see you may delete it manually, but *what* is the purpose of it?

                  Well you may want to do that, I mean that's nothing wrong in doing it (and that's the reason for delaying the thread start). :)

                  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]

                  R Offline
                  R Offline
                  Rajesh R Subramanian
                  wrote on last edited by
                  #11

                  No, I asked why did he want to delete it manually (as opposed to leave it die in its way). There could be valid reasons, I wanted to know the OP's reason. :)

                  It is a crappy thing, but it's life -^ Carlo Pallini

                  CPalliniC 1 Reply Last reply
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                  • R Rajesh R Subramanian

                    No, I asked why did he want to delete it manually (as opposed to leave it die in its way). There could be valid reasons, I wanted to know the OP's reason. :)

                    It is a crappy thing, but it's life -^ Carlo Pallini

                    CPalliniC Offline
                    CPalliniC Offline
                    CPallini
                    wrote on last edited by
                    #12

                    You're right: there could be valid reasons, anyway you're very (and, of course, politely) curious about her reason. :rolleyes:

                    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]

                    In testa che avete, signor di Ceprano?

                    R 1 Reply Last reply
                    0
                    • CPalliniC CPallini

                      You're right: there could be valid reasons, anyway you're very (and, of course, politely) curious about her reason. :rolleyes:

                      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]

                      R Offline
                      R Offline
                      Rajesh R Subramanian
                      wrote on last edited by
                      #13

                      Of course, politeness is guaranteed (or 100% money back), after Mr. Maunder's new commandment. :)

                      It is a crappy thing, but it's life -^ Carlo Pallini

                      CPalliniC 1 Reply Last reply
                      0
                      • R Rajesh R Subramanian

                        Of course, politeness is guaranteed (or 100% money back), after Mr. Maunder's new commandment. :)

                        It is a crappy thing, but it's life -^ Carlo Pallini

                        CPalliniC Offline
                        CPalliniC Offline
                        CPallini
                        wrote on last edited by
                        #14

                        :-D BTW there's a polite way to advice someone to stop using threads? :rolleyes:

                        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]

                        modified on Wednesday, August 12, 2009 10:59 AM

                        In testa che avete, signor di Ceprano?

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