A single-producer, single-consumer lock-free queue for C++

Used in Kuesa

The sources can be found in KUESA/kuesa/examples/kuesa/music-box/3rdparty/readerwriterqueue.

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 Copyright (c) 2013-2015, Cameron Desrochers

BSD Simplified.

 This license applies to all the code in this repository except that written by third
 parties, namely the files in benchmarks/ext, which have their own licenses, and Jeff
 Preshing's semaphore implementation (used in the blocking queue) which has a zlib
 license (embedded in atomicops.h).

 Simplified BSD License:

 Copyright (c) 2013-2015, Cameron Desrochers
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:

 - Redistributions of source code must retain the above copyright notice, this list of
 conditions and the following disclaimer.
 - Redistributions in binary form must reproduce the above copyright notice, this list of
 conditions and the following disclaimer in the documentation and/or other materials
 provided with the distribution.

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