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Re: [c++-pthreads] Initialization of local static mutex

  • To: Roland Schwarz <roland.schwarz@xxxxxxxxx>
  • Subject: Re: [c++-pthreads] Initialization of local static mutex
  • From: Mark Mitchell <mark@xxxxxxxxxxxxxxxx>
  • Date: Sun, 08 Oct 2006 10:00:49 -0700
Roland Schwarz wrote:

Mark Mitchell wrote:
PTHREAD_MUTEX_INITIALIZER is supposed to be a constant-expression (like "-1" or "{ 1, 0 }"), so the initialization will happen before foo is called, typically at program start-up. 

This was not my question, or concern. I am not asking what is typical,
but if it is possible that a standard conforming compiler can suffer
from such a race condition.
A standard-conforming compiler, used with a standard-conforming POSIX library, cannot suffer from a race condition in the code that you posted because PTHREAD_MUTEX_INITIALIZER must be a constant-expression. 

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Mark Mitchell
CodeSourcery
mark@xxxxxxxxxxxxxxxx
(650) 331-3385 x713