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Date: Wed, 4 Jan 2017 01:06:40 -0500
From: Rich Felker <>
Subject: Re: Reviving planned ldso changes

On Tue, Jan 03, 2017 at 12:43:51AM -0500, Rich Felker wrote:
> - Dependency-order ctor execution. I think the walk order looks
>   something like, starting at a given node (initially the main app or
>   new library being loaded dynamically), traversing to its first
>   deps[] entry that hasn't been constructed, or, if none remain,
>   executing its ctors then traversing back to its needed_by. This
>   process avoids the need for any call recursion and should be
>   near-optimal (if not optimal) provided the position in a dso's
>   deps[] list is saved in the dso struct.

Attached is a proposed, completely untested patch to implement
dependency order loading, posted for review/comments. In order to
work, I think it also needs p->deps to be setup unconditionally (right
now it's only setup for dynamically loaded libs).


View attachment "ctor_dep_order.diff" of type "text/plain" (1541 bytes)

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