Solana Turbine3 Advanced Programs with Rust & Anchor

This repository contains my work for the Solana Turbine3 Advanced Programs with Rust & Anchor course. I will be adding my projects to this repository and documenting my progress here.

Learnings / Notes / Cheatsheet

Crates

Native Rust

use solana_program::entrypoint;
use solana_program::{
    account_info::AccountInfo, entrypoint::ProgramResult, program_error::ProgramError,
    pubkey::Pubkey, hash::hashv
};

Optimization Ideas

use five8_const::decode_32_const;
use pinocchio::{entrypoint, msg};
use pinocchio::{
    account_info::AccountInfo, entrypoint::ProgramResult, program_error::ProgramError,
    pubkey::Pubkey
};
use solana_nostd_sha256::hashv;

Notes

Entrypoint

Native Rust

Optimization Ideas

Notes

IX Discriminator

Native Rust

Optimization Ideas

Notes

IX Serde

Native

let lamports: u64 = u64::from_le_bytes([
    data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7],
]);

Optimized

let lamports: u64 = unsafe { *(data.as_ptr() as *const u64) };

Notes

Account Serde

Native

Optimized

Notes

Account Checks

Native

Optimized

Notes

Balance Checks

Native

**vault.try_borrow_mut_lamports()? -= lamports;
**signer.try_borrow_mut_lamports()? += lamports;

Optimized

unsafe {
    *vault.borrow_mut_lamports_unchecked() -= lamports;
    *signer.borrow_mut_lamports_unchecked() += lamports;
}

Notes

CPIs

Native

Optimized

Notes

Signer Checks

Native

Optimized

Notes

PDAs

Program Derived Addresses

Native

use solana_program::hash::hashv

let pda = hashv(&[
    signer.key.as_ref(),
    &[bump],
    ID.as_ref(),
    PDA_MARKER,
]);

Optimized

use solana_nostd_sha256::hashv;

let pda = hashv(&[
    signer.key().as_ref(),
    &[bump],
    ID.as_ref(),
    PDA_MARKER,
]);

Notes

Error Handling

Native

Optimized

Notes

Programs return the result in the r0 register. Similar to C the exit code 0 is a success and any other number is an error. Therefore we can add the error code to the r0 register directly using assembly to return an error.

// Ensure signer had 0 bytes data length
if *(input.add(0x0058) as *const u64) != 0 {
   sol_log_("Invalid account length Signer".as_ptr(), 29);
   core::arch::asm!("lddw r0, 2"); // load immediate value 2 into r0 register
   return;  
};

Testing

Native

Optimized

Notes

Projects

1. PaulX Tutorial

   • Completed the PaulX tutorial, which covers the basics of programming on Solana using an escrow program as an example.

2. Vault Program

   • Currently working on a vault program. More details and progress updates will be added soon.

To-Do List

• Complete PaulX tutorial
• Make PaulX code better
• Make the Vault Program work
• Make the Vault Program better

File Outline

• paulx_escrow/: Contains the code and notes from the PaulX tutorial.
• vault_program/: Work in progress for the vault program.
• README.md: This file, documenting the course progress and project details.

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Feel free to reach out if you have any questions or suggestions regarding my projects or this repository.