#### Summary of Changes
This PR implements AccountIndexFormat::AddressAndOffset, the index format
that will be used by the hot account storage.
#### Test Plan
Unit tests are included in this PR.
Tested via the prototype implementation of tiered-storage.
#### Problem
`TieredAccountMeta` has default impls on many of its methods. But I don't think it should, because these defaults are not actually useful defaults (i.e. they are `unimplemented!()`).
We're only going to have a small number of structs that'll implement this trait, and each struct should be responsible for picking the correct impl for each method.
Currently, `HotAccountMeta` is the only one, and it implements every method.
#### Summary of Changes
Remove default impls on TieredAccountMeta
* update max reward block factor
* review comments
* more tests
* reduce the number of stakes per block to speed up tests
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Co-authored-by: HaoranYi <haoran.yi@solana.com>
#### Problem
While TieredReadableAccount implements ReadableAccount that
already includes `fn data(&self) -> &'a [u8]`, a `data()` function that
directly under TieredReadableAccount is still needed in order to
correctly link the lifetime of the returned value and its member
account_block. Otherwise, cargo will complain lifetime may not
live long enough.
#### Summary of Changes
This PR adds TieredReadableAccount::data() that directly links the lifetime
of its account_block to the returned value.
* Test rewards compuation and partitioned rewards distribution at the epoch boundary
* reviews
* match to if
* clippy
* peeling of bank1 from the loop
* collapse if_same
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Co-authored-by: HaoranYi <haoran.yi@solana.com>
* Move CostModel and CostTracker to its own crate
* compile new crate and update imports
* update sbf Cargo.lock
* fix AbiExample
* fix cargo sort
* Fix AbiExample
#### Problem
Both AppendVec::cloned_account() and ReadableAccount::to_account_shard_data()
returns an AccountSharedData instance by cloning itself as pointed out under
a comment in PR #32380.
#### Summary of Changes
This PR removes AccountsFile::cloned_account() and replaces its call-sites by
ReadableAccount::to_account_shared_data().
#### Summary of Changes
This PR introduces TieredReadableAccount, a struct that takes a generic
TieredAccountMeta that implements ReadableAccount and support
StoredAccountMeta.
#### Test Plan
More tests will be added once more reader and writer functions for hot
accounts have been added.
#### Problem
In TieredAccountMeta, it uses `data` and `account_data` to refer to
the data associated with the account, and this could be confusing.
#### Summary of Changes
This PR makes TieredAccountMeta only use `account_data` to refer
to the data associated with the account.
#### Problem
Function data_size_for_shared_block() is designed to provide
the data_size when its account shares its account block with
other accounts. However, TieredAccountMeta already has another
function for returning data size.
#### Summary of Changes
This PR removes data_size_for_shared_block() from TieredAccountMeta.
Will follow-up with another PR that includes a better API.
#### Summary of Changes
This PR implements HotAccountMeta's getter functions for accessing
optional fields (e.g. rent_epoch, account_hash, etc) and account data.
#### Test Plan
A new unit test is included in this PR.
#### Summary of Changes
This PR adds several functions to AccountMetaOptionalFields
for obtaining the offset of each optional field.
#### Test Plan
New unit test cases are included in this PR.
#### Summary of Changes
This PR adds byte_block::read_type(), an util function that
reads the raw part of the input byte block at the specified offset
as type T. This function will be later used by the hot storage.
#### Test Plan
Modified existing unit tests to use byte_block::read_type()
when the input byte block is properly aligned.
* When there are too many pubkeys in one slot, kick the one with lowest
stake out.
* Cache last_root to reduce read locks we need.
* Use slots_in_epoch to limit number of slots in the map.
* Fix lint errors.
* Only cache stake and slots per epoch once per epoch.
* Revert "Only cache stake and slots per epoch once per epoch."
This reverts commit 8658aad0083456794b4c4403adaf9c74d1a71d09.
* Vote at the tip of current fork if last vote is outside SlotHash
of the tip and last vote expired.
* Add unittest when last vote is outside slothash, we should vote at the tip
of the current fork.
* Revert "Use slots_in_epoch to limit number of slots in the map."
This reverts commit 93574f57a48d2a70fbbc0f62fa8810d3b6bee0af.
* Revert "Cache last_root to reduce read locks we need."
This reverts commit bb114ec2b62cb9c0207328b19c415f6116be0f1c.
* Revert "When there are too many pubkeys in one slot, kick the one with lowest"
This reverts commit 711e29a6a025fd4f11fbc97dcbbe90e4832be04c.
* Move new vote generation when last vote is outside slothash into the
main path, this actually makes more sense since we don't select where
to vote in two different places, and all the vote generation logic
is seamlessly inherited.
* - Move vote refresh to be behind select vote and do not refresh vote if a new
vote is selected.
- Check whether last vote is inside slothash inside select_vote_and_reset_forks
- rename slot_within_slothash to is_in_slothashes_history
- remove one unittest for now, more tests will be added in a separate CL
* Remove new test, it will be in another file.
* Add is_in_slot_hashes_history test in the new file.
* Add unittest for the case when last vote is outside slot hashes.
* Small improvements and more unittests.
* Fix bad merge.
* Update docs/src/terminology.md
Co-authored-by: mvines <mvines@gmail.com>
* Put SwitchForkDecision::FailedSwitchThreshold logic into separate function.
* Make linter happy.
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Co-authored-by: mvines <mvines@gmail.com>
Yueh-Hsuan Chiang
Pankaj Garg
behzad nouri
Brooks
Jeff Washington (jwash)
Ryo Onodera
HaoranYi
Justin Starry
Illia Bobyr
Wen