Skip to content

fix: use delta-based budget tracking for compression top-ups #2253

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
ananas-block wants to merge 1 commit into from
Closed

fix: use delta-based budget tracking for compression top-ups #2253

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 5 additions & 5 deletions programs/compressed-token/program/src/shared/compressible_top_up.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -91,16 +91,13 @@ pub fn process_compression_top_up(
transfer_amount: &mut u64,
lamports_budget: &mut u64,
) -> Result<(), ProgramError> {
if *transfer_amount != 0 {
return Ok(());
}

if *current_slot == 0 {
*current_slot = Clock::get()
.map_err(|_| TokenError::SysvarAccessError)?
.slot;
}

let previous_amount = *transfer_amount;
*transfer_amount = compression
.calculate_top_up_lamports(
account_info.data_len() as u64,
Expand All @@ -109,7 +106,10 @@ pub fn process_compression_top_up(
)
.map_err(|_| TokenError::InvalidAccountData)?;

*lamports_budget = lamports_budget.saturating_sub(*transfer_amount);
// Only deduct the delta from budget to avoid double-charging when
// multiple compressions target the same account.
let delta = transfer_amount.saturating_sub(previous_amount);
*lamports_budget = lamports_budget.saturating_sub(delta);

Ok(())
}