The newly added locking code seems to have confused quite a few
people, as "thread_safe=1" may be considered as if the thread-safety
lock has to be turned on. (It meant that the plugin _is_ thread-safe,
i.e. it needs no extra locking.)
For avoiding such a misunderstanding, this commit renames the relevant
pcm fields and give more comments to explain what is for what.
The former single pcm->thread_safe flag is now split to two boolean
flags, pcm->need_lock and pcm->lock_enabled. It consumes a few more
bytes, but this would be (hopefully) better understandable.
git://git.alsa-project.org / alsa-lib.git / commit