retbuf: Remove (#52)

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Armani Ferrante 2020-12-01 13:08:05 -08:00 committed by GitHub
parent ea2bfbb62d
commit cb43d3707f
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4 changed files with 0 additions and 507 deletions

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# Note: This crate must be built using do.sh
[package]
name = "serum_retbuf"
version = "0.1.0"
description = "Retbuf"
repository = "https://github.com/project-serum/serum-dex"
edition = "2018"
[features]
program = ["solana-sdk/program"]
default = []
[dependencies]
solana-sdk = { version = "=1.3.9", default-features = false }
arrayref = "0.3.6"
[lib]
crate-type = ["cdylib", "lib"]
name = "serum_retbuf"
[dev-dependencies]
[profile.release]
lto = true

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[target.bpfel-unknown-unknown.dependencies.std]
features = []

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use solana_sdk::entrypoint_deprecated;
use solana_sdk::{pubkey::Pubkey, account_info::AccountInfo, entrypoint_deprecated::ProgramResult, program_error::ProgramError};
use std::ops::DerefMut;
use arrayref::{array_refs, mut_array_refs};
fn fast_copy(mut src: &[u8], mut dst: &mut [u8]) {
loop {
assert_eq!(src.len(), dst.len());
if src.len() < 8 {
break;
}
let (src_word, src_rem) = array_refs![src, 8; ..;];
let (dst_word, dst_rem) = mut_array_refs![dst, 8; ..;];
*dst_word = *src_word;
src = src_rem;
dst = dst_rem;
}
assert_eq!(src.len(), dst.len());
// dst.copy_from_slice(src);
unsafe {
std::ptr::copy_nonoverlapping(
src.as_ptr(),
dst.as_mut_ptr(),
src.len(),
);
}
}
// fn process_instruction(
// _program_id: &Pubkey,
// accounts: &[AccountInfo],
// instruction_data: &[u8],
// ) -> ProgramResult {
// let mut dst_ref = accounts
// .first()
// .ok_or(ProgramError::NotEnoughAccountKeys)?
// .try_borrow_mut_data()?;
// dst_ref.deref_mut()
// .get_mut(..instruction_data.len())
// .map(|dst| fast_copy(instruction_data, dst))
// .ok_or(ProgramError::AccountDataTooSmall)
// }
// entrypoint_deprecated!(process_instruction);
const INVALID_ACCOUNT_DATA: u64 = 4 << 32;
const ACCOUNT_DATA_TOO_SMALL: u64 = 5 << 32;
const NOT_ENOUGH_ACCOUNT_KEYS: u64 = 11 << 32;
#[no_mangle]
pub unsafe extern "C" fn entrypoint(input: *mut u8) -> u64 {
let num_accounts = std::ptr::read_unaligned(input as *mut u64);
if num_accounts == 0 {
return NOT_ENOUGH_ACCOUNT_KEYS;
} else if num_accounts > 1 {
return INVALID_ACCOUNT_DATA;;
}
let data_len = std::ptr::read_unaligned(input.add(43) as *mut u64) as usize;
let data_ptr = input.add(51);
let data = std::slice::from_raw_parts_mut(data_ptr, data_len);
let instruction_region_ptr = data_ptr.add(data_len + 41);
let instruction_data_ptr = data_ptr.add(data_len + 41 + 8);
let instruction_data_len = std::ptr::read_unaligned(instruction_region_ptr as *mut u64) as usize;
let instruction_data = std::slice::from_raw_parts(instruction_data_ptr, instruction_data_len);
match data.get_mut(..instruction_data_len) {
None => return ACCOUNT_DATA_TOO_SMALL,
Some(dst) => fast_copy(instruction_data, dst),
};
entrypoint_deprecated::SUCCESS
}