[Bug libstdc++/24469] Possible race condition in mt_allocator causing SIGSEGV

[bkoz at gcc dot gnu dot org]

------- Comment #6 from bkoz at gcc dot gnu dot org  2006-03-03 17:52 -------
Created an attachment (id=10963)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10963&action=view)
make _M_used, _M_free atomic


Hey. This is a patch to make these operations atomic. It's based on top of
another set of patches that improve scalability, and some cleanups. 

I'm awaiting the assignments for some of this, and when I do I'll stagger that
part in first. 

The use of atomic updates kills performance on x86. Perhaps there is a better
way to do this.

-benjamin


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24469