solana-invoke

是 solana_program::program::invoke* 的一个即插即用替代品，具有更好的计算和堆效率

摘要

当前的 CPI 函数 solana_program::program::invoke* 执行了不必要的复制和分配。这个包以100%向后兼容的方式消除了这些低效之处。

计算和堆节省的规模与通过 CPI 传递的账户和数据量成正比。即使在 test-program/ 中的测试程序中，它只传递了两个账户和 O(16 字节) 的数据，也观察到显著的节省（开销从 536 cus -> 197 cus 减少）。

// test-program schematic. logs and asserts are redacted.

// A simple solana program that transfers 1 lamport twice
fn process_instruction(
    _program_id: &Pubkey,
    accounts: &[AccountInfo],
    _data: &[u8],
) -> ProgramResult {
    // Send from account zero to account one, thrice.
    // 1) First with standard invoke.
    // 2) Then with our invoke
    // 3) Then with our invoke_signed_unchecked
    let transfer =
        solana_program::system_instruction::transfer(accounts[0].key, accounts[1].key, 1);

    // 1) First with standard invoke_signed.
    solana_program::program::invoke(&transfer, &accounts[..2])?;

    // 2) Then with our invoke_signed
    solana_invoke::invoke(&transfer, &accounts[..2])?;

    // 3) Then with our invoke_signed
    solana_invoke::invoke_unchecked(&transfer, &accounts[..2])?;

    Ok(())
}

输出

Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM invoke [1]
Program log: invoking system program via solana_program::program::invoke
Program 11111111111111111111111111111111 invoke [2]
Program 11111111111111111111111111111111 success
Program log: invoked system program via solana_program::program::invoke successfully: 536 cus
Program log: invoking system program via our invoke
Program 11111111111111111111111111111111 invoke [2]
Program 11111111111111111111111111111111 success
Program log: invoked system program via our invoke successfully: 392 cus
Program log: invoking system program via our invoke
Program 11111111111111111111111111111111 invoke [2]
Program 11111111111111111111111111111111 success
Program log: invoked system program via our invoke successfully: 197 cus
Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM consumed 7864 of 200000 compute units
Program 1111111QLbz7JHiBTspS962RLKV8GndWFwiEaqKM success