From: Pavel Vozenilek (pavel_vozenilek_at_[hidden])
Date: 2006-05-19 07:00:34
"Tobias Schwinger" wrote:
[ COW implementation of pimpl ]
> Note that you have to synchronize the reference counter
> and also the copy operation in a multithreaded environment.
If a read-write lock will be added it should
be optional - the overhead may be too big.
It should be also possible to _manually_
trigger the cloning:
* it the pimpl is passed into another hread
and we do not want to deal with locking
* if the member is const but changes
a mutable data and the design cannot
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