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Optimize account copies and use RefCell to handle duplicate accounts in BPF programs (#7958)

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This commit is contained in:
Jack May
2020-01-24 10:54:26 -08:00
committed by GitHub
parent d400a64b9a
commit 34ed93d57c
12 changed files with 339 additions and 169 deletions
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26
programs/bpf/rust/dup_accounts/src/lib.rs
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@ -12,32 +12,32 @@ fn process_instruction(_program_id: &Pubkey, accounts: &mut [AccountInfo], data:
match data[0] {
1 => {
info!("modify first account data");
accounts[2].data[0] = 1;
accounts[2].m.borrow_mut().data[0] = 1;
}
2 => {
info!("modify first account data");
accounts[3].data[0] = 2;
accounts[3].m.borrow_mut().data[0] = 2;
}
3 => {
info!("modify both account data, should fail");
accounts[2].data[0] = 1;
accounts[3].data[0] = 2;
info!("modify both account data");
accounts[2].m.borrow_mut().data[0] += 1;
accounts[3].m.borrow_mut().data[0] += 2;
}
4 => {
info!("modify first account lamports");
*accounts[1].lamports -= 1;
*accounts[2].lamports += 1;
*accounts[1].m.borrow_mut().lamports -= 1;
*accounts[2].m.borrow_mut().lamports += 1;
}
5 => {
info!("modify first account lamports");
*accounts[1].lamports -= 2;
*accounts[3].lamports += 2;
*accounts[1].m.borrow_mut().lamports -= 2;
*accounts[3].m.borrow_mut().lamports += 2;
}
6 => {
info!("modify both account lamports, should fail");
*accounts[1].lamports -= 1;
*accounts[2].lamports += 1;
*accounts[3].lamports += 2;
info!("modify both account lamports");
*accounts[1].m.borrow_mut().lamports -= 3;
*accounts[2].m.borrow_mut().lamports += 1;
*accounts[3].m.borrow_mut().lamports += 2;
}
_ => {
info!("Unrecognized command");