[alsa-devel] Lock free ring buffers and SMP safety
matt at mattbucknall.com
Sun Nov 18 18:31:52 CET 2007
Yes, this old chestnut. I've spent the best part of today trying to
ascertain whether or not, in practical terms, a single-producer,
single-consumer lock free ring-buffer can be written purely in C/C++ and
be SMP safe on multiple architectures without memory barriers.
Information I've found has been largely conflicting so I've given up
trying to get a conclusive answer. Instead I'll just go with the flow.
What is the general consensus amongst ALSA application developers when
it comes to implementing this kind of buffer? Is it possible to use
memory barriers through some user space API call that I don't know about?
Thanks in advance for any comments/suggestions.
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