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Groups > comp.os.linux.development.apps > #413

object file memory

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I have an object file foo.o that I want to link to an executable. The 
main executable creates a number of child threads that use code and 
variables from foo.o. I've included a very simplistic representation at 
the end. My question is, how can each child thread (worker) get it's own 
private copy of global variables foo_char and foo_int? Or does that just 
happen auto-magically?

** foo.c **
char foo_char;
int foo_int;

foo_prog(int i, char c) {
   foo_char = c;
   foo_int = i;
}


** master.c **
extern foo_prog(int, char);

int main(int argc, char** argv)
{
   pthread_create(&th1, NULL, worker1, NULL)
   pthread_create(&th2, NULL, worker2, NULL)
}

int worker1(void)
{
   foo_prog(1,'1');
}

int worker2(void)
{
   foo_prog(2,'2');
}

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object file memory Bill M <wpmccormick@just_about_everywhere.com> - 2012-02-06 16:41 -0600
  Re: object file memory Kaz Kylheku <kaz@kylheku.com> - 2012-02-06 23:07 +0000
    Re: object file memory Bill M <wpmccormick@just_about_everywhere.com> - 2012-02-07 08:23 -0600
      Re: object file memory Bill M <wpmccormick@just_about_everywhere.com> - 2012-02-07 08:40 -0600
        Re: object file memory Bill M <wpmccormick@just_about_everywhere.com> - 2012-02-07 08:58 -0600
      Re: object file memory Bill M <wpmccormick@just_about_everywhere.com> - 2012-02-07 11:21 -0600
        Re: object file memory "Ersek, Laszlo" <lacos@caesar.elte.hu> - 2012-02-07 22:09 +0100
          Re: object file memory Bill M <wpmccormick@just_about_everywhere.com> - 2012-02-07 16:08 -0600
            Re: object file memory Bill M <wpmccormick@just_about_everywhere.com> - 2012-02-08 20:42 -0600
              Re: object file memory Rainer Weikusat <rweikusat@mssgmbh.com> - 2012-02-09 19:00 +0000
            Re: object file memory Joe Beanfish <joe@nospam.duh> - 2012-02-09 11:15 -0500

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