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Re: __P
- To: Geoff Marshall <geoff at steelydev dot com>
- Subject: Re: __P
- From: brent verner <brent at rcfile dot org>
- Date: Mon, 12 Jun 2000 21:20:45 -0400
- Cc: gcc at gcc dot gnu dot org
- References: <B56ACDA1.398%geoff@steelydev.com>
on Mon, Jun 12, 2000 at 05:25:53PM -0700, Geoff Marshall typed aloud:
| Am trying to compile some threads on Red Had Linux and see that all the
| routines in pthreads.h are prefixed with __P for example:
|
| extern int pthread_create __P ((pthread_t *__thread,
| __const pthread_attr_t *__attr,
| void *(*__start_routine) (void *),
| void *__arg));
|
| Questions:
|
| What does __P mean?
hmm... __Pure-magic :) ??? I see you've been digging
aroung pthread.h and friends, huh? baaaad idea. the
man pages for pthread_* are quite nice. always give
'man' a shot before resorting to reading headers for
library usage :) If you need the man pages, I can
email 'em to you.
| How do I call pthread_create?
#include <pthread.h>
#include <stdio.h>
void*
runner(char* a)
{
printf("runner() got '%s'\n", a);
pthread_exit((void*)"return val");
}
int
main(int argc, char** argv)
{
pthread_t thr;
void* rv;
pthread_create(&thr,NULL,(void*)runner,(void*)"an arg");
pthread_join(thr,&rv);
printf("runner() returned '%s'\n",(char*)rv);
return 0;
}
--
Damon Brent Verner
Cracker JackŪ Certified Professional
brent@rcfile.org, brent@linux1.org