Re: starvation in pthread_once?

[Alexander Terekhov <TEREKHOV@de.ibm.com>]

Grrr. Bad day.

  if (!once_control) {
    named_mutex::guard guard(&once_control2);
    if (!once_control2) {
      <init>
      once_control2 = true;
    }
    once_control = true;
  }

regards,
alexander.


Alexander Terekhov/Germany/IBM@IBMDE@sources.redhat.com on 03/08/2005
10:55:53 AM

Sent by:    pthreads-win32-owner@sources.redhat.com


To:    Ross Johnson <rpj@callisto.canberra.edu.au>
cc:    Pthreads-Win32 list <pthreads-win32@sources.redhat.com>
Subject:    Re: starvation in pthread_once?



> DCSI-TLS: (__declspec(thread) for control variable; DLL issues
> aside for a moment)
>
>   if (!once_control) {
>     named_mutex::guard guard(&once_control);
>     if (!once_control) {
>       <init>
>       once_control = true;
>     }
>   }

Sorry, I meant:

  if (!once_control) {
    named_mutex::guard guard(&once_control);
    if (!once_control2) {
      <init>
      once_control2 = true;
    }
    once_control = true;
  }

where once_control2 is a non-TLS flag.

regards,
alexander.