Re: Need for mutexes when reading global variables

On Sep 22, 7:29 pm, "lancer6...@xxxxxxxxx" <lancer6...@xxxxxxxxx>
wrote:
Is there a need to put a mutex around the reading of a global variable
that is initialized before any threads are created and remains
unchanged for the duration of the program, even though there is no
writes to it?

No mutex is needed for what you describe. pthread_create() is
required to synchronize memory, so any changes to global variables
made before calling it are guaranteed to be visible to the new thread.
http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap04.html#tag_04_10


Philip Guenther
.

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