Re: emacs-unicode-2 bootstrap on FreeBSD (temacs coredump)

[Jan Djärv]

YAMAMOTO Mitsuharu skrev:

> A comment in src/lib/libc/stdlib/malloc.c (FreeBSD Current) says:
>
> /*
>  * Mutexes based on spinlocks.  We can't use normal pthread mutexes, because
>  * they require malloc()ed memory.
>  */
>
> So it seems to be impossible to make src/gmalloc.c thread-safe only
> using pthread mutexes.

Totally thread safe is impossible, but for Emacs we don't need that.  It 
should be OK to initialize gmalloc in a non-thread safe way because it is done 
in main (or possibly before) before any threads are created.

> I'm not sure if spinlocks are open to user applications, but anyway it
> would be simpler to define SYSTEM_MALLOC when HAVE_GTK_AND_PTHREAD &&
> !DOUG_LEA_MALLOC, and abandon emacs_blocked_malloc etc. on such
> platforms.  I don't care if my changes made to src/gmalloc.c for
> thread-safety is reverted.

That is always a possibility.  I'll look into both.

        Jan D.