Date: 2007nov6
Q. A critical section is too strong for my application.
I only want other threads excluded when changes are made to the
shared data.
A. You want a read-write lock.
In Linux/Unix check the man page for pthread_rwlock_rdlock
Windows does not have native support for read-write locks.
We have succesfully used KReadWriteLock by Ivan Krivyakov
http://www.codeguru.com/cpp/w-p/system/misc/article.php/c5679/
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