gaspersic/solana
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Re-do rent collection check on rent-exempt account (#11349)

Browse Source 
* wip: re-do rent collection check on rent-exempt account

* Let's see how the ci goes

* Restore previous code

* Well, almost all new changes are revertable

* Update doc

* Add test and gating

* Fix tests

* Fix tests, especially avoid to change abi...

* Fix more tests...

* Fix snapshot restore

* Align to _new_ with better uninitialized detection
This commit is contained in:
Ryo Onodera
2020-08-17 14:22:16 +09:00
committed by GitHub
parent 6c5b8f324a
commit 23fa84b322
9 changed files with 138 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
docs/src/implemented-proposals/rent.md
View File

@ -24,11 +24,11 @@ Even if those processes are out of scope of rent collection, all of manipulated
## Actual processing of collecting rent
Rent is due for one epoch's worth of time, and accounts always have `Account::rent_epoch` of `current_epoch + 1`.
Rent is due for one epoch's worth of time, and accounts have `Account::rent_epoch` of `current_epoch` or `current_epoch + 1` depending on the rent regime.
If the account is in the exempt regime, `Account::rent_epoch` is simply pushed to `current_epoch + 1`.
If the account is in the exempt regime, `Account::rent_epoch` is simply updated to `current_epoch`.
If the account is non-exempt, the difference between the next epoch and `Account::rent_epoch` is used to calculate the amount of rent owed by this account \(via `Rent::due()`\). Any fractional lamports of the calculation are truncated. Rent due is deducted from `Account::lamports` and `Account::rent_epoch` is updated to the next epoch. If the amount of rent due is less than one lamport, no changes are made to the account.
If the account is non-exempt, the difference between the next epoch and `Account::rent_epoch` is used to calculate the amount of rent owed by this account \(via `Rent::due()`\). Any fractional lamports of the calculation are truncated. Rent due is deducted from `Account::lamports` and `Account::rent_epoch` is updated to `current_epoch + 1` (= next epoch). If the amount of rent due is less than one lamport, no changes are made to the account.
Accounts whose balance is insufficient to satisfy the rent that would be due simply fail to load.