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Re: What is the purpose of wdcache and wlcache?


From: Chet Ramey
Subject: Re: What is the purpose of wdcache and wlcache?
Date: Fri, 8 Feb 2019 10:42:15 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.5.0

On 2/8/19 10:39 AM, Peng Yu wrote:
>> Yes: ocache_free.
> 
> Could you please help explain what wdcache and wlcache actually do.
> Why is it essential to have them? Why not just alloc and free them
> without the caches? Thanks.

To avoid potentially-expensive calls to malloc and free, the same as
any cache.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    address@hidden    http://tiswww.cwru.edu/~chet/



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