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From Jim Jagielski <>
Subject Re: Read scattered to gather send (was [too long]: httpd 2.4.25, mpm_event, ssl: segfaults)
Date Mon, 06 Mar 2017 16:46:01 GMT
This really belongs in dev@apr... Adding it now.

If we are *really* drastically changing this core aspect of
pool allocation, we should reconsider my thoughts related to
more granular mutex related to anytime we alloc from a
pool to allow for, if required/desired, full thread safety
not just when creating a subpool or destroying.

> On Mar 3, 2017, at 2:38 PM, Yann Ylavic <> wrote:
> First fix :)
> On Fri, Mar 3, 2017 at 6:41 PM, Yann Ylavic <> wrote:
>> With apr_allocator_bulk_alloc(), one can request several apr_memnode_t
>> of a fixed (optional) or minimal given size, and in the worst case get
>> a single one (allocaƓted), or in the best case as much free ones as
>> available (within a maximal size, also given).
> The non-fixed version was buggy (couldn't reuse lower indexes), so
> "apr_allocators-bulk-v2.patch" attached.
> Will post some numbers (w.r.t. buffers' resuse and writev sizes) soon.
> <apr_allocators-bulk-v2.patch>

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