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Date: Tue, 13 Nov 2012 09:28:28 -0800 (PST)
From: khanalesb <khanal...@gmail.com>
To: mongodb-user@googlegroups.com
Message-Id: <31d1b5e7-214b-4207-8596-a9de2690143e@googlegroups.com>
Subject: BSONObjBuilder decouple
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I am trying to use BSONObjBuilder as a serializer and decouple to avoid 
memcopy. 

        mongo::BSONObjBuilder bldr;
....................
....................
....................

#ifdef X   
//THIS WORKS
        mongo::BSONObj obj = bldr.obj();
        zmq::message_t replyBody( obj.objsize() );
        std::memcpy( replyBody.data(), obj.objdata(), obj.objsize() );
#else
//SEG FAILT
        int len;
        char* buf = bldr.decouple(len);
        zmq::message_t replyBody( buf, len, zmqFree );
#endif


Do I have to call anything else before decouple? Can I use it at all?
Thanks.

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I am trying to use BSONObjBuilder as a serializer and decouple to avoid memcopy. <br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mongo::BSONObjBuilder bldr;<br>....................<br>....................<br>
....................<br>
<br>#ifdef X&nbsp;&nbsp; <br>//THIS WORKS<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mongo::BSONObj obj = bldr.obj();<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; zmq::message_t replyBody( obj.objsize() );<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; std::memcpy( replyBody.data(), obj.objdata(), obj.objsize() );<br>#else<br>//SEG FAILT<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; int len;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; char* buf = bldr.decouple(len);<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; zmq::message_t replyBody( buf, len, zmqFree );<br>#endif<br><br><br>Do I have to call anything else before decouple? Can I use it at all?<br>Thanks.<br>
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