On Wednesday 21 April 2010 16:59:01 Perrin Harkins wrote: > In both cases you have the same drawback: it's impossible to read > anything from the shared data without copying the data you read into > perl variables. A shared database only saves memory if you don't need > all of the data to handle a request. > no, MMapDB creates read-only variables that reference the mmapped block. It manipulates SvPVX directly:
sv=newSV(0); SvUPGRADE(sv, SVt_PV); SvPOK_only(sv); SvPV_set(sv, pointer); SvLEN_set(sv, 0); # this makes sure perl won't try to free() the space SvCUR_set(sv, length); SvREADONLY_on(sv); You can then pass around references to that variable and nothing will be copied. Torsten Förtsch -- Need professional modperl support? Hire me! (http://foertsch.name) Like fantasy? http://kabatinte.net
