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Re: simple pthread

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On 07/26/11 06:53 PM, cerr wrote:
> i have now something like this:
> int MyThread::StartMe(void)
> {
>    // starting thread
>    pthread_create(&ThreadA, NULL,&PrintMsg, NULL);
>
> }
> //-------------------------------------------------------------
>
> void PrintMsg(void)
> {
>    //thread function
>    while (1) {
>
>      pthread_mutex_lock(&mutex1 );
>      count++;
>      pthread_mutex_unlock(&mutex1 );
>
>      cout<<  "I Incremented count: "<<  count<<  endl;
>    }
> }
> but I get following:
>
> $ g++ -pthread -o example example.cpp
> example.cpp: In member function ‘int MyThread::StartMe()’:
> example.cpp:66:49: error: invalid conversion from ‘void (*)()’ to
> ‘void* (*)(void*)’
> example.cpp:66:49: error:   initializing argument 3 of ‘int
> pthread_create(pthread_t*, const pthread_attr_t*, void* (*)(void*),
> void*)’
>
> How do I gwet this compiled? How do I pass a void argument?
> Thank you!

Pass the the correct function type!

extern "C" void* PrintMsg(void*)

-- 
Ian Collins

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simple pthread cerr <ron.eggler@gmail.com> - 2011-07-25 20:45 -0700
  Re: simple pthread red floyd <no.spam.here@its.invalid> - 2011-07-25 20:55 -0700
  Re: simple pthread Ian Collins <ian-news@hotmail.com> - 2011-07-26 15:56 +1200
  Re: simple pthread "Alf P. Steinbach" <alf.p.steinbach:usenet@gmail.com> - 2011-07-26 08:28 +0200
    Re: simple pthread cerr <ron.eggler@gmail.com> - 2011-07-25 23:31 -0700
      Re: simple pthread cerr <ron.eggler@gmail.com> - 2011-07-25 23:53 -0700
        Re: simple pthread Ian Collins <ian-news@hotmail.com> - 2011-07-26 19:43 +1200
        Re: simple pthread "io_x" <a@b.c.invalid> - 2011-07-26 09:57 +0200
          Re: simple pthread "io_x" <a@b.c.invalid> - 2011-07-26 10:31 +0200
            Re: simple pthread "io_x" <a@b.c.invalid> - 2011-07-26 12:38 +0200
              Re: simple pthread Ian Collins <ian-news@hotmail.com> - 2011-07-26 22:39 +1200
          Re: simple pthread Ian Collins <ian-news@hotmail.com> - 2011-07-26 22:41 +1200

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