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From what I could investigate, msgpack doesn't modify char* buffers obtained from RSTRING_PTR. This means that on Rubinius we don't have to copy back and forth the buffer to make sure it's also updated on the Ruby side. This copying of buffers is a similar problem as the RARRAY_PTR problem, because it is not safe to expose GC'ed memory on Rubinius to extensions since it can move due to Rubinius having a moving GC.
= MessagePack == Description MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like JSON. But unlike JSON, it is very fast and small. Simple usage is as follows: require 'msgpack' msg = [1,2,3].to_msgpack #=> "\x93\x01\x02\x03" MessagePack.unpack(msg) #=> [1,2,3] Use MessagePack::Unpacker for streaming deserialization. == Installation === Archive Installation ruby extconf.rb make make install === Gem Installation gem install msgpack == Copyright Author:: frsyuki <frsyuki@users.sourceforge.jp> Copyright:: Copyright (c) 2008-2010 FURUHASHI Sadayuki License:: Apache License, Version 2.0