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https://issues.apache.org/jira/browse/STDCXX-943?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Travis Vitek updated STDCXX-943:
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Patch Info: [Patch Available]
> Inefficiency when retrieving strings from message catalog
> ---------------------------------------------------------
>
> Key: STDCXX-943
> URL: https://issues.apache.org/jira/browse/STDCXX-943
> Project: C++ Standard Library
> Issue Type: Improvement
> Components: 22. Localization
> Affects Versions: 4.2.1
> Reporter: Travis Vitek
> Priority: Minor
> Fix For: 4.3
>
> Attachments: stdcxx-943.patch
>
>
> A single call to {{\_STD::messages<T>::do_get()}} can call
> {{\_\_rw_manage_cat_data()}} up to three times. Since each call involves a
> mutex lock/unlock, there are going to be some wasted cycles. It would be nice
> to reduce this to one call. Perhaps the {{_RW::\_\_rw_get_message()}}
> function could be changed to fill in a pointer to the
> {{\_STD::\_\_rw_locale}} that is kept in the cache and the
> {{_RW::\_\_rw_get_locale()}} function could be removed.
> For binary compatibility reasons, we may need to add an overload of
> {{_RW::\_\_rw_get_message}} and deprecate the other functions so that they
> are removed automagically in the next major release.
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