Re: Thread_Id

[RVK]

Arjan van de Ven wrote:

> On Thu, 2005-07-14 at 11:03 +0530, RVK wrote:
>  
>
> > Robert Hancock wrote:
> >
> >    
> >
> > > RVK wrote:
> > >
> > >      
> > >
> > > > Can anyone suggest me how to get the threadId using 2.6.x kernels.
> > > > pthread_self() does not work and returns some -ve integer.
> > > >        
> > > What do you mean, negative integer? It's not an integer, it's a
> > > pthread_t, you're not even supposed to look at it..
> > >      
> > What is pthread_t inturn defined to ? pthread_self for 2.4.x thread
> > libraries return +ve number(as u have a objection me calling it as
> > integer :-))
> >    
>
> it doesn't return a number it returns a pointer ;) or a floating point
> number. You don't know :)
>
> what it returns is a *cookie*. A cookie that you can only use to pass
> back to various pthread functions.
>
>  
Hahaha......common. Please clarify following....
SYNOPSIS
      #include <pthread.h>

      pthread_t pthread_self(void);

DESCRIPTION
      pthread_self return the thread identifier for the calling thread.

bits/pthreadtypes.h:150:typedef unsigned long int pthread_t;

rvk

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