From: Rich Felker <dalias@aerifal.cx>
Date: Fri, 26 Apr 2013 20:05:39 +0000 (-0400)
Subject: use atomic decrement rather than cas in pthread_exit thread count
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=c3a6839ce95c0f93bd73f7fbe5fcaee4054e5b62;hp=c3a6839ce95c0f93bd73f7fbe5fcaee4054e5b62;ds=sidebyside

use atomic decrement rather than cas in pthread_exit thread count

now that blocking signals prevents any application code from running
while the last thread is exiting, the cas logic is no longer needed to
prevent decrementing below zero.
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