
rr (debugging)

computingil, prograam execution record cheyyaanum replay cheyyaanum roopakalppana cheytha linuxinulla oru debugging upakaranamaan rr. replay ghattathil, reverse executione pinthunaykkunna mechappetta jii. dii. bii debugging anubhavam aarr. aarr nalkunnu.
charakk hardwareilum softweyarilum mossilla firefox debug cheiyunnathinaayi mosillayaan aadyam rr vikasippichath. rr ippol mosillaykku purathu vyaapakamaayi upayogikkunnu, koodaathe google crome, kyumu, libreophees thudangiya softweyarukal debug cheyyaan praapthamaanu. rr ennathu swatantra softweyaraanu.
design.
recording ghattathil, kernelil ninnulla oru linux proses grouppilekkulla ellah inputtukalum athupole thanne nirnnaayakamallaatha cpu efakttukalum (ardtsc polullava) rr rekhappeduthunnu. eee inputtukal diskilekku logue cheyth "trace" aayi maarunnu. trace record cheythukazhinjaal, athu aavashyamullathra thavana veendum play cheyyaanum ellah avasthakalum krithyamaayi punarnirmmikkaanum kazhiyum. replay samayat rr reverse-execution cheyyaan kazhivulla gdb anubhavam nalkunna oru jidibsarvaraayi pravartthikkum. oru bugg veendum veendum play cheyyaan kazhiyunnathinaal, parambaraagatha debuggerukal upayogichu pariharikkan valare budhimuttulla prasnangal debug cheiyunnathinulla puthiya reethikal rr prapthamaakkunnu.
enchiniyaring recordilum vinyaasakshamathaykaayi replayilum kooduthal vishadaamshangal ulkkollunna, aaraarinte roopakalppana bharam kuranja upayokthru-space recordilum replayilum rekhappeduthiyittundu.

