Mastering Blockchain - Second Edition

Execution environment

There are some key elements that are required by the execution environment to execute the code. The key parameters are provided by the execution agent, for example, a transaction. These are listed as follows:

• System state.
• Remaining gas for execution.
• The address of the account that owns the executing code.
• The address of the sender of the transaction.
• The originating address of this execution (it can be different from the sender).
• The gas price of the transaction that initiated the execution.
• Input data or transaction data depending on the type of executing agent. This is a byte array; in the case of a message call, if the execution agent is a transaction, then the transaction data is included as input data.
• The address ...