arch_program 0.6.4

A Rust library for building programs that run inside the Arch Virtual Machine. Provides core functionality for creating instructions, managing accounts, handling program errors, and interacting with the Arch runtime environment. Includes utilities for logging, transaction handling, and Bitcoin UTXO management.
Documentation 
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mod definitions;

pub use definitions::*;

/// Maximum CPI instruction data size. 10 KiB was chosen to ensure that CPI
/// instructions are not more limited than transaction instructions if the size
/// of transactions is doubled in the future.
pub const MAX_CPI_INSTRUCTION_DATA_LEN: u64 = 10 * 1024;

/// Maximum CPI instruction accounts. 255 was chosen to ensure that instruction
/// accounts are always within the maximum instruction account limit for SBF
/// program instructions.
pub const MAX_CPI_INSTRUCTION_ACCOUNTS: u8 = u8::MAX;

/// Maximum number of account info structs that can be used in a single CPI
/// invocation. A limit on account info structs is effectively the same as
/// limiting the number of unique accounts. 128 was chosen to match the max
/// number of locked accounts per transaction (MAX_TX_ACCOUNT_LOCKS).
pub const MAX_CPI_ACCOUNT_INFOS: usize = 128;