Bug 13444 – std.concurrency.Mailbox should use a ring buffer

The current Mailbox implementation in std.concurency uses a private List struct where every call to .put() needs to allocate a new node from the GC. A better alternative is a ring buffer which can do all the things the Mailbox needs and faster in every way. The growing time can be compensated by a right call to setMaxMailboxSize() and any random removal can be a swap of the last element with the one being removed. Forum link: http://forum.dlang.org/thread/[email protected]

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