On Mon, Nov 29, 2010 at 8:52 PM, Basile Starynkevitch <basile@xxxxxxxxxxxxxxxxx> wrote: > On Mon, Nov 29, 2010 at 06:53:19PM +0800, jovi zhang wrote: >> Thanks for your reply. >> you means that there don't have any built-in functionality for dump >> data structure. >> like __GCC_DUMP_STRUCTURE__(f_unit). >> >> we are both code programmer, we both know how it is boring for write >> print field of a data structure on by one. :) >> >> I got this idea when I use gdb, gdb have command print, and it will >> print data structure with field name. I think maybe gdb read symbolic >> info of binary. > > gdb reads the DWARF debugging information, generated by gcc when asked > with -g, and this information contains a lot of thing (including field > names and offsets and source file positions). > >> >> As you said, extending GCC is too ... > > It definitely could worth it, and GCC MELT would help a lot, if you > deal with a large enough software to be heavily concerned. For > example, if your software is half a million line of C or C++ source > code, such an effort is definitely worthwhile, but it means at least > several weeks of learning & experimentation about GCC. > >> >> Actually I don't understand why GCC not support this useful >> functionality? GCC compiler know detail of each data structure >> definition. > > Because GCC is mostly a standard compliant language, and the feature > you want would require a significant language extension. > >> or is there have any library provider this functionality?(like gdb >> parse symbolic info) > > I don't think so. Maybe things like http://opencxx.sourceforge.net/ > might interest you. > > Is the code you are thinking of your own, or is it external code? > > And perhaps C or C++ is not the right language for you. Java or Common > Lisp or perhaps Ocaml might suite you better. > > Cheers. > > -- > Basile STARYNKEVITCH Â Â Â Â http://starynkevitch.net/Basile/ > email: basile<at>starynkevitch<dot>net mobile: +33 6 8501 2359 > 8, rue de la Faiencerie, 92340 Bourg La Reine, France > *** opinions {are only mines, sont seulement les miennes} *** > Hi, gcc-help guys. Â Â I want to find some gcc built-in unctionality for dump data structure, like __GCC_DUMP_STRUCTURE__(f_unit). Â Â so then no need for programmer to print all field of data structure one by one. Â Â using gdb can dump data structure automatic, that because gdb read DWARF info. Â Â I think you know what I means, I send this question to gcc@xxxxxxxxxxx(they tell me to find answer in this mailing list here) Â Â So do there have any expert give me some clue on this? or any method to get this? Â Â About gdb read DWARF info, is there have any library can used in my program directly? Â ÂThanks very much for reading this email. .jovi
