{"id":32045,"date":"2019-10-31T21:44:52","date_gmt":"2019-10-31T18:44:52","guid":{"rendered":"https:\/\/prohoster.info\/blog\/reliz-valgrind-3-15-0-instrumentariya-dlya-vyyavleniya-problem-pri-rabote-s-pamyatyu\/"},"modified":"2019-10-31T21:44:52","modified_gmt":"2019-10-31T18:44:52","slug":"reliz-valgrind-3-15-0-instrumentariya-dlya-vyyavleniya-problem-pri-rabote-s-pamyatyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/reliz-valgrind-3-15-0-instrumentariya-dlya-vyyavleniya-problem-pri-rabote-s-pamyatyu","title":{"rendered":"A vers\u00e3o 3.15.0 do Valgrind, uma ferramenta para identificar problemas relacionados \u00e0 mem\u00f3ria, foi lan\u00e7ada.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/sourceforge.net\/p\/valgrind\/mailman\/message\/36642596\/\">Dispon\u00edvel<\/a><\/noindex> lan\u00e7amento <noindex><a rel=\"nofollow\" href=\"http:\/\/valgrind.org\/\">Valgrind 3.15.0<\/a><\/noindex>, ferramenta para debugar o uso de mem\u00f3ria, detectar vazamentos de mem\u00f3ria e realizar perfilagem. O funcionamento do Valgrind \u00e9 suportado nas plataformas Linux (X86, AMD64, ARM32, ARM64, PPC32, PPC64BE, PPC64LE, S390X, MIPS32, MIPS64), Android (ARM, ARM64, MIPS32, X86), Solaris (X86, AMD64) e macOS (AMD64).<\/p>\n<p>Em <noindex><a rel=\"nofollow\" href=\"http:\/\/valgrind.org\/docs\/manual\/dist.news.html\">nova vers\u00e3o<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> Significativamente <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.mozilla.org\/nnethercote\/2019\/04\/17\/a-better-dhat\/\">reformulado<\/a><\/noindex> e foi ampliada a ferramenta de perfilagem de heap DHAT (Dynamic Heap Analysis Tool), <noindex><a rel=\"nofollow\" href=\"http:\/\/valgrind.org\/docs\/manual\/dh-manual.html\">permitindo<\/a><\/noindex> rastrear todas as solicita\u00e7\u00f5es de aloca\u00e7\u00e3o de mem\u00f3ria na heap e identificar vazamentos de recursos, \u00e1reas de atividade excessivamente alta ao trabalhar com a heap, aloca\u00e7\u00f5es de mem\u00f3ria n\u00e3o utilizadas, aloca\u00e7\u00f5es de curto prazo e aloca\u00e7\u00e3o ineficiente de dados na heap. Da categoria de desenvolvimentos experimentais, o DHAT foi inclu\u00eddo no conjunto de ferramentas padr\u00e3o do Valgrind (para executar, agora \u00e9 necess\u00e1rio usar a op\u00e7\u00e3o &#171;&#8212;tool=dhat&#187; em vez de &#171;&#8212;tool=exp-dhat&#187;).\n<p>A melhoria mais not\u00e1vel foi a adi\u00e7\u00e3o de uma interface gr\u00e1fica ao DHAT. Al\u00e9m disso, ap\u00f3s a conclus\u00e3o do programa monitorado, o DHAT agora exibe na tela apenas um resumo m\u00ednimo das informa\u00e7\u00f5es mais importantes, enquanto o relat\u00f3rio completo com os dados de perfilagem \u00e9 gravado em um arquivo. Os dados agora n\u00e3o s\u00e3o agrupados em registros, mas s\u00e3o salvos como \u00e1rvores de rastreamento de pilha. O n\u00famero de medi\u00e7\u00f5es realizadas foi ampliado e novas categorias de par\u00e2metros rastreados foram adicionadas. Para visualizar o relat\u00f3rio gravado, foi proposto um visualizador especial dh_view.html, que \u00e9 executado em um navegador web;<br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/ffp4g1ylyit3jdyti1hqcvtb-wpengine.netdna-ssl.com\/nnethercote\/files\/2019\/04\/dh-tree.png\"><img decoding=\"async\" alt=\"A vers\u00e3o 3.15.0 do Valgrind, uma ferramenta para identificar problemas relacionados \u00e0 mem\u00f3ria, foi lan\u00e7ada. \" src=\"\/wp-content\/uploads\/2019\/04\/9991914838e3e36d4dcb89ea8c3eb087.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<li class=\"l\"> Para sistemas amd64 (x86_64) foi adicionada a suporte para conjuntos de instru\u00e7\u00f5es estendidos RDRAND e F16C;\n<li class=\"l\"> No Cachegrind e no Callgrind, foi adicionada uma nova op\u00e7\u00e3o &#171;&#8212;show-percs&#187;, que adiciona a exibi\u00e7\u00e3o de valores de contadores em percentual;\n<li class=\"l\"> No Massif para Linux, Android e Solari, o modo &#171;&#8212;read-inline-info&#187; est\u00e1 ativado por padr\u00e3o, para macOS ainda \u00e9 necess\u00e1rio especificar explicitamente &#171;&#8212;read-inline-info=yes&#187;;\n<li class=\"l\"> No Memcheck, ao especificar a op\u00e7\u00e3o &#171;&#8212;xtree-leak=yes&#187; (sa\u00edda dos resultados de verifica\u00e7\u00e3o de vazamentos de mem\u00f3ria no formato xtree), a op\u00e7\u00e3o &#171;&#8212;show-leak-kinds=all&#187; \u00e9 ativada automaticamente. Foi feito trabalho para prevenir falsos positivos;\n<li class=\"l\"> Foi adicionada a op\u00e7\u00e3o &#171;&#8212;show-error-list=no|yes&#187;, bem como a op\u00e7\u00e3o &#171;-s&#187;, equivalente a &#171;&#8212;show-error-list=yes&#187; para exibir a lista de erros identificados ap\u00f3s a conclus\u00e3o da execu\u00e7\u00e3o. Anteriormente, tal lista era exibida no modo de sa\u00edda detalhada &#171;-v -v&#187;, mas a sa\u00edda nesse modo era sobrecarregada com um grande volume de informa\u00e7\u00f5es desnecess\u00e1rias.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50546\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 Valgrind 3.15.0, \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f \u0434\u043b\u044f \u043e\u0442\u043b\u0430\u0434\u043a\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u043f\u0430\u043c\u044f\u0442\u044c\u044e, \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0443\u0442\u0435\u0447\u0435\u043a \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 \u043f\u0440\u043e\u0444\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0420\u0430\u0431\u043e\u0442\u0430 Valgrind \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c Linux (X86, AMD64, ARM32, ARM64, PPC32, PPC64BE, PPC64LE, S390X, MIPS32, MIPS64), Android (ARM, ARM64, MIPS32, X86), Solaris (X86, AMD64) \u0438 macOS (AMD64). \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438: \u0417\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043f\u0435\u0440\u0435\u0440\u0430\u0431\u043e\u0442\u0430\u043d \u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442 \u043f\u0440\u043e\u0444\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u0443\u0447\u0438 DHAT (Dynamic Heap [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":23893,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-32045","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 Valgrind 3.15.0.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/pt\/blog\/news\/reliz-valgrind-3-15-0-instrumentariya-dlya-vyyavleniya-problem-pri-rabote-s-pamyatyu\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" 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