Subj : Re: Memory synchronization with pthreads
To   : comp.programming.threads
From : Alexander Terekhov
Date : Mon Jan 17 2005 09:55 am


Joseph Seigh wrote:
[...]
> fork isn't a pthreads function.  

Fork is listed in the XBD 4.10. But the XBD 4.10 is busted. Obscure
term "memory synchronization" must die.

http://www.opengroup.org/austin/mailarchives/ag/msg07649.html
http://groups.google.de/groups?selm=41C301DF.5B50EDB7%40web.de

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Applications shall ensure that access to any memory location by more 
than one thread is restricted such that no thread can read or modify 
a memory location while another thread of control may be modifying it. 
Applications shall use functions listed below that synchronize thread 
execution and ensure that modifications to locations in memory are 
ordered with respect to accesses to the same memory locations in other 
threads. There is a happens-before inter-thread ordering with respect 
to preceding (in program and inter-thread order) modifications of 
memory locations in

  a thread calling pthreads_create() and accesses to modified memory 
  locations in the created thread;

  a thread calling fork() and accesses to modified memory locations 
  in the initial thread of the created process;
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regards,
alexander.

.