On Mon, 27 Aug 2012, Noah Watkins wrote: > I have a bufferlist use case that I can't quite resolve. I'm packing > up a struct and a blob, but not sure how to seek to the beginning of > the blob correctly during decode: > > 1. Setup bufferlist > > /* add header */ > struct header hdr; > ::encode(hdr, bl); > > /* add payload blob */ > bl.append(buf, len);
Instead, do bufferlist b; b.append(buf, len); ::encode(b, bl); that'll include a length in front of it... > 2. Later in decode ... > > /* get header */ > bufferlist::iterator it = in.begin(); > ::decode(hdr, it); > > **problem: Want to get a bufferlist for the payload, which is > presumably exactly where the iterator now points. How should that > transformation happen with zero-copy? and then bufferlist b; ::decode(b, it); will get it back. sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
