[PATCH] malloc: Run fork handler as late as possible [BZ #19431]

[Andreas Schwab]

Florian Weimer <fweimer@redhat.com> writes:

> 2016-04-13  Florian Weimer  <fweimer@redhat.com>
>
> 	[BZ #19431]
> 	Run the malloc fork handler as late as possible to avoid deadlocks.
> 	* malloc/malloc-internal.h: New file.
> 	* malloc/malloc.c: Include it.
> 	* malloc/arena.c (ATFORK_MEM): Remove.
> 	(__malloc_fork_lock_parent): Rename from ptmalloc_lock_all.
> 	Update comment.
> 	(__malloc_fork_unlock_parent): Rename from ptmalloc_unlock_all.
> 	(__malloc_fork_unlock_child): Rename from ptmalloc_unlock_all2.
> 	Remove outdated comment.
> 	(ptmalloc_init): Do not call thread_atfork.  Remove
> 	thread_atfork_static.

In file included from malloc.c:1889:0:
arena.c:139:1: error: conflicting types for '__malloc_fork_lock_parent'
 __malloc_fork_lock_parent (void)
 ^
In file included from malloc.c:247:0:
../malloc/malloc-internal.h:23:6: note: previous declaration of '__malloc_fork_lock_parent' was here
 void __malloc_fork_lock_parent (void) internal_function attribute_hidden;
      ^

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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