October 2025
Intermediate to advanced
570 pages
16h 46m
Portuguese (Portugal, Brazil)
book
Dominando o Ethereum, 2nd Edition
by Carlo Parisi, Alessandro Mazza, Niccolo Pozzolini, Gavin Wood, Andreas M. Antonopoulos
Content preview from Dominando o Ethereum, 2nd Edition
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Capítulo 14. A máquina virtual da Ethereum
Este trabalho foi traduzido com recurso a IA. Agradecemos o teu feedback e comentários: translation-feedback@oreilly.com
No centro do protocolo e da operação da Ethereum está a Máquina Virtual Ethereum, ou EVM, para abreviar. Como você pode imaginar pelo nome, ela é um mecanismo de computação, não muito diferente das máquinas virtuais da estrutura .NET da Microsoft ou dos intérpretes de outras linguagens de programação compiladas por bytecode, como Java. Neste capítulo, daremos uma olhada detalhada no EVM, incluindo seu conjunto de instruções, estrutura e operação, no contexto das atualizações de estado da Ethereum.
O que é o EVM?
O EVM é a parte da Ethereum que lida com a implantação e a execução de contratos inteligentes. As transações simples de transferência de valor de um EOA para outro não precisam envolvê-lo, praticamente falando, mas todo o resto envolverá uma atualização de estado computada pelo EVM. Em um nível mais alto, o EVM executado no blockchain da Ethereum pode ser considerado um computador descentralizado global que contém milhões de objetos executáveis, cada um com seu próprio armazenamento permanente de dados.
O EVM é uma máquina de estado quase Turing-completa: "quase" porque todos os processos de execução são limitados a um número finito de etapas computacionais pela quantidade de gás disponível para qualquer execução de contrato inteligente. Dessa forma, o problema da parada é "resolvido" (todas as execuções do ...
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