{"id":102396,"date":"2021-11-26T15:36:58","date_gmt":"2021-11-26T13:36:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-elfshaker-razvivaet-sistemu-kontrolya-versij-dlya-elf-fajlov"},"modified":"2021-11-26T15:36:58","modified_gmt":"2021-11-26T13:36:58","slug":"proekt-elfshaker-razvivaet-sistemu-kontrolya-versij-dlya-elf-fajlov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/proekt-elfshaker-razvivaet-sistemu-kontrolya-versij-dlya-elf-fajlov","title":{"rendered":"O projeto elfshaker est\u00e1 desenvolvendo um sistema de controle de vers\u00f5es para arquivos ELF","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Foi lan\u00e7ado o primeiro epis\u00f3dio do projeto elfshaker, que desenvolve um sistema de controle de vers\u00e3o para arquivos bin\u00e1rios, otimizado para rastrear mudan\u00e7as em arquivos execut\u00e1veis no formato ELF. O sistema armazena patches bin\u00e1rios entre arquivos, permitindo extrair a vers\u00e3o desejada por chave, o que acelera significativamente a execu\u00e7\u00e3o da opera\u00e7\u00e3o \u2018git bisect\u2019 e reduz consideravelmente o espa\u00e7o em disco utilizado. O c\u00f3digo do projeto \u00e9 distribu\u00eddo sob a licen\u00e7a Apache-2.0. <\/p>\n

O programa se destaca pela alta efici\u00eancia no armazenamento de altera\u00e7\u00f5es bin\u00e1rias em um grande n\u00famero de arquivos bin\u00e1rios semelhantes, como aqueles gerados durante compila\u00e7\u00e3o incremental de um \u00fanico projeto. Em particular, os resultados de duas mil recompila\u00e7\u00f5es do compilador Clang (cada recompila\u00e7\u00e3o reflete uma altera\u00e7\u00e3o ap\u00f3s cada commit) podem ser armazenados em um \u00fanico arquivo pack de 100 MB, o que \u00e9 4000 vezes menor do que seria necess\u00e1rio se armazenados separadamente. <\/p>\n

Extrair qualquer estado desse arquivo leva de 2 a 4 segundos (60 vezes mais r\u00e1pido que a opera\u00e7\u00e3o \u2018git bisect\u2019 sobre o c\u00f3digo LLVM), permitindo rapidamente obter a vers\u00e3o desejada dos arquivos execut\u00e1veis do projeto sem recompil\u00e1-los a partir dos c\u00f3digos fonte ou manter uma c\u00f3pia de cada vers\u00e3o do arquivo execut\u00e1vel j\u00e1 compilado.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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