3004d5a12d [validation] Remove fMissingInputs from AcceptToMemoryPool() (John Newbery)
c428622a5b [validation] Remove unused first_invalid parameter from ProcessNewBlockHeaders() (John Newbery)
7204c6434b [validation] Remove useless ret parameter from Invalid() (John Newbery)
1a37de4b31 [validation] Remove error() calls from Invalid() calls (John Newbery)
067981e492 [validation] Tidy Up ValidationResult class (John Newbery)
a27a2957ed [validation] Add CValidationState subclasses (John Newbery)
Pull request description:
Carries out some remaining tidy-ups remaining after PR 15141:
- split ValidationState into TxValidationState and BlockValidationState (commit from ajtowns)
- various minor code style tidy-ups to the ValidationState class
- remove the useless `ret` parameter from `ValidationState::Invalid()`
- remove the now unused `first_invalid` parameter from `ProcessNewBlockHeaders()`
- remove the `fMissingInputs` parameter from `AcceptToMemoryPool()`, and deal with missing inputs the same way as other errors by using the `TxValidationState` object.
Tip for reviewers (thanks ryanofsky!): The first commit ("[validation] Add CValidationState subclasses" ) is huge and can be easier to start reviewing if you revert the rote, mechanical changes:
Substitute the commit hash of commit "[validation] Add CValidationState subclasses" for <CommitHash> in the commands below.
```sh
git checkout <CommitHash>
git grep -l ValidationState | xargs sed -i 's/BlockValidationState\|TxValidationState/CValidationState/g'
git grep -l ValidationResult | xargs sed -i 's/BlockValidationResult\|TxValidationResult/ValidationInvalidReason/g'
git grep -l MaybePunish | xargs sed -i 's/MaybePunishNode\(ForBlock\|ForTx\)/MaybePunishNode/g'
git diff HEAD^
```
After that it's possible to easily see the mechanical changes with:
```sh
git log -p -n1 -U0 --word-diff-regex=. <CommitHash>
```
ACKs for top commit:
laanwj:
ACK 3004d5a12d
amitiuttarwar:
code review ACK 3004d5a12d. Also built & ran tests locally.
fjahr:
Code review ACK 3004d5a12d . Only nit style change and pure virtual destructor added since my last review.
ryanofsky:
Code review ACK 3004d5a12d. Just whitespace change and pure virtual destructor added since last review.
Tree-SHA512: 511de1fb380a18bec1944ea82b513b6192df632ee08bb16344a2df3c40811a88f3872f04df24bc93a41643c96c48f376a04551840fd804a961490d6c702c3d36
362ded410b Avoid using g_rpc_node global in wallet code (Russell Yanofsky)
8922d7f6b7 scripted-diff: Remove g_connman, g_banman globals (Russell Yanofsky)
e6f4f895d5 Pass NodeContext, ConnMan, BanMan references more places (Russell Yanofsky)
4d5448c76b MOVEONLY: Move NodeContext struct to node/context.h (Russell Yanofsky)
301bd41a2e scripted-diff: Rename InitInterfaces to NodeContext (Russell Yanofsky)
Pull request description:
This change is mainly a naming / organization change intended to simplify #10102. It:
- Renames struct InitInterfaces to struct NodeContext and moves it from
src/init.h to src/node/context.h. This is a cosmetic change intended to make
the point of the struct more obvious.
- Gets rid of BanMan and ConnMan globals making them NodeContext members
instead. Getting rid of these globals has been talked about in past as a way
to implement testing and simulations. Making them NodeContext members is a
way of keeping them accessible without the globals.
- Splits g_rpc_interfaces global into g_rpc_node and g_rpc_chain globals. This
better separates node and wallet rpc methods. Node RPC methods should have
access NodeContext, while wallet RPC methods should only have indirect access
to node functionality via interfaces::Chain.
- Adds NodeContext& references to interfaces::Chain class and the
interfaces::MakeChain() function. This is needed to access ConnMan and BanMan
instances without the globals.
- Gets rid of redundant Node and Chain instances in Qt tests. This is
needed due to the previous MakeChain change, and also makes test setup a
little more straightforward. More cleanup could be done in the future, but it
will require deduplication of bitcoind, bitcoin-qt, and TestingSetup init
code.
ACKs for top commit:
laanwj:
ACK 362ded410b
Tree-SHA512: 9ae6ff1e33423291d1e52056bac95e0874538390892a6e83c4c115b3c73155a8827c0191b46eb3d14e3b3f6c23ccb08095490880fbc3188026319c71739f7db2
f201ba59ff Refactor: Split up CWallet and LegacyScriptPubKeyMan and classes (Andrew Chow)
6702048f91 MOVEONLY: Move key handling code out of wallet to keyman file (Andrew Chow)
ab053ec6d1 Move wallet enums to walletutil.h (Andrew Chow)
Pull request description:
Moves key management functions into a new class LegacyScriptPubKeyMan. First two commits are move-only commits which move stuff out of wallet.{h/cpp} and into newly created scriptpubkeyman.{h/cpp}. Third commit changes several things in CWallet to use LegacyScriptPubKeyMan.
First step in the wallet boxes refactor. Note that LegacyScriptPubKeyMan and ScriptPubKeyMan cannot be used standalone yet and are still very much tied into CWallet with both accessing functions within each other. This PR is to help reduce review burden.
ACKs for top commit:
Sjors:
Code review ACK f201ba5.
promag:
Code review ACK f201ba59ff.
ryanofsky:
Code review ACK f201ba59ff
MarcoFalke:
ACK f201ba59ff
Tree-SHA512: bdc0d8595a06233fe003afcf968a38e0e8cc584a6a89c5bcd05309ac29dca852391802d46763ef81a108d146d0f40c79ea5438e87234ed12b4b8360c9aec94c0
Wallet code should use interfaces::Chain and not directly access to node state.
Add a g_rpc_chain replacement global for wallet code to use, and move
g_rpc_node definition to a libbitcoin_server source file so there are link
errors if wallet code tries to access it.
This moves CWallet members and methods dealing with keys to a new
LegacyScriptPubKeyMan class, and updates calling code to reference the new
class instead of CWallet.
Most of the changes are simple text replacements and variable substitutions
easily verified with:
git log -p -n1 -U0 --word-diff-regex=.
The only nontrivial chunk of code added is the new LegacyScriptPubKeyMan class
declaration, but this code isn't new and is just selectively copied and moved
from the previous CWallet class declaration. This can be verified with:
git log -p -n1 --color-moved=dimmed_zebra src/wallet/scriptpubkeyman.h src/wallet/wallet.h
or
git diff HEAD~1:src/wallet/wallet.h HEAD:src/wallet/scriptpubkeyman.h
This commit does not change behavior.
9e95931865 [wallet] Remove `state` argument from CWallet::CommitTransaction (John Newbery)
d1734f9a3b [wallet] Remove return value from CommitTransaction() (John Newbery)
b6f486a02b [wallet] Add doxygen comment to CWallet::CommitTransaction() (John Newbery)
8bba91b22d [wallet] Fix whitespace in CWallet::CommitTransaction() (John Newbery)
Pull request description:
`CommitTransaction()` returns a bool to indicate success, but since commit
b3a7410 (#9302) it only returns true, even if the transaction was not
successfully broadcast. This commit changes CommitTransaction() to return
void.
All dead code in `if (!CommitTransaction())` branches has been removed.
Two additional commits fix up the idiosyncratic whitespace in `CommitTransaction` and add a doxygen comment for the function.
ACKs for top commit:
laanwj:
ACK 9e95931865
Tree-SHA512: a55a2c20369a45222fc0e02d0891495655a926e71c4f52cb72624768dd7b9c1dca716ea67d38420afb90f40c6e0fd448caa60c18fd693bb10ecb110b641820e6
facec1c643 wallet: Avoid showing GUI popups on RPC errors (MarcoFalke)
Pull request description:
RPC errors and warnings are shown as popups in the GUI instead of being returned to the RPC caller. For example,
```
$ ./src/bitcoin-cli loadwallet $(pwd)/./test/functional/data/wallets/high_minversion/
error code: -4
error message:
Wallet loading failed.
```
gives me a GUI popup and no reason why loading the wallet failed.
After this pull request:
```
$ ./src/bitcoin-cli loadwallet $(pwd)/./test/functional/data/wallets/high_minversion/
error code: -4
error message:
Wallet loading failed: Error loading /home/marco/workspace/btc_bitcoin_core/./test/functional/data/wallets/high_minversion/wallet.dat: Wallet requires newer version of Bitcoin Core
ACKs for top commit:
laanwj:
Code review ACK facec1c643
Tree-SHA512: c8274bbb02cfcf71676eeec1e773e51fb3538cf93f82e7cb8536f4716d44ed819cdc162dfc039ac7386a4db381a734cdb27fd32567043a1180c02519fbcba194
CommitTransaction returns a bool to indicate success, but since commit
b3a74100b8 it only returns true, even if the transaction was not
successfully broadcast. This commit changes CommitTransaction() to return
void.
All dead code in `if (!CommitTransaction())` branches has been removed.
b96ed03962 [wallet] Remove pruning check for -rescan option (John Newbery)
eea462de9c [wallet] Remove package limit config access from wallet (John Newbery)
Pull request description:
Removes wallet access to `-limitancestorcount`, `-limitdescendantcount` and `-prune`:
- `-limitancestorcount` and `-limitdescendantcount` are now accessed with a method `getPackageLimits` in the `Chain` interface.
- `-prune` is not required. It was only used in wallet component initiation to prevent running `-rescan` when pruning was enabled. This check is not required.
Partially addresses #17137.
ACKs for top commit:
MarcoFalke:
Tested ACK b96ed03962
ryanofsky:
Code review ACK b96ed03962
promag:
Code review ACK b96ed03962.
ariard:
ACK b96ed03, check there isn't left anymore wallet access to node arguments.
Tree-SHA512: 90c8e3e083acbd37724f1bccf63dab642cf9ae95cc5e684872a67443ae048b4fdbf57b52ea47c5a1da6489fd277278fe2d9bbe95e17f3d4965a1a0fbdeb815bf
The wallet should not be able to directly access global configuration
from the node. Remove access of "-limitancestorcount" and
"-limitdescendantcount".
9924bce317 [gui] intro: enable pruning by default unless disk is big (Sjors Provoost)
c8de347a9d [gui] intro: add prune preference (Sjors Provoost)
1bbc49d207 [gui] intro: inform caller if intro was shown (Sjors Provoost)
1957103786 [gui] add explicit prune setter (Sjors Provoost)
1bccf6a52d [node] add forceSetArg to interface (Sjors Provoost)
Pull request description:
This adds a checkbox to the intro screen to enable pruning from the get go.
If the user has plenty of space, it's unchecked by default:
<img width="671" alt="big" src="https://user-images.githubusercontent.com/10217/63641289-10339000-c6ac-11e9-98d7-caf64dff0da6.png">
If the user has insufficient space it's checked by default:
<img width="897" alt="low" src="https://user-images.githubusercontent.com/10217/63641276-d4002f80-c6ab-11e9-9f5b-a53472f814ff.png">
When the user has barely enough space and is likely to need pruning in the near future, this is shown in yellow and we also check the prune box:
<img width="662" alt="medium" src="https://user-images.githubusercontent.com/10217/63641294-1c1f5200-c6ac-11e9-8ecb-6b69e42b1ece.png">
The cut-off for this 10 GB above `m_assumed_blockchain_size` (`=240` in `chainparams.cpp`).
If the user launches the first time with `-prune=...` then we disable the check box and display the correct size (rounded to GB):
<img width="658" alt="Schermafbeelding 2019-08-24 om 20 23 14" src="https://user-images.githubusercontent.com/10217/63641351-09594d00-c6ad-11e9-94fe-fe5ed562e109.png">
The 2 GB default matches the settings default. The user can't change it in the intro screen, but can change it later. I'm tempted to increase that default to 10 GB, and then have the intro screen reduce it if space is really tight.
Tips for testing:
* move your existing data dir elsewhere
* wipe data dir at every restart (behavior is different if it exists)
* launch with `bitcoin-qt -resetguisettings -lang=en` (there's some space issues in different languages)
* fake your free space by changing `intro.cpp` line 90: `freeBytesAvailable = 5000000000; // 5 GB`
* try both testnet and mainnet, because settings are seperate. In particular note how step 7 in `GuiMain` switches where `QTSettings settings` points to; this had me thoroughly confused on testnet, because I was setting them too early.
ACKs for top commit:
jonasschnelli:
Tested ACK 9924bce317
ryanofsky:
utACK 9924bce317. The changes are very logical, and implement the feature in a clean that way that doesn't add a lot of complication and shouldn't interfere with future improvements. I looked at Luke's branch too, and I think there's also a lot of great stuff there that seems fully compatible with this change.
Tree-SHA512: 9523961451c53aebd347716976bc3a4a398f989dc21e9bbbd357060bd11a8f46c435f068bd421bb31ccb08e55445ef67bc347d8d19a4fb8fde9d6d3f9a3bcbb0
Instead of relying on combination of hashBlock and nIndex
values to manage tx in its lifecycle, we introduce 4
status : CONFIRMED, UNCONFIRMED, CONFLICTED, ABANDONED.
hashBlock and nIndex magic values should only be used at
serialization/deserialization for backward-compatibility.
At block disconnection, we know flag txn as UNCONFIRMED where
previously they kept their states until being override by a
block connection or abandontransaction call. This is a change
in behavior for which user may have to call abandon twice
if transaction is disconnected and not accepted back in the mempool.
We assert status transitioning right in AddToWallet. Doing so
flagged a misbehavior in ComputeTimeSmart unit test where same
tx is confirmed twice in different block. To avoid inconsistencies
we unconfirmed tx before new connection in different block. We
also remove a cs_main lock in test, as AddToWallet and its
callees don't rely on locked chain.
582d2cd747 Cover UTXO set access with lock annotations (James O'Beirne)
5693530685 refactor: have CCoins* data managed under CChainState (James O'Beirne)
fae6ab6aed refactor: pcoinsTip -> CChainState::CoinsTip() (James O'Beirne)
Pull request description:
This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11):
Parent PR: #15606
Issue: #15605
Specification: https://github.com/jamesob/assumeutxo-docs/tree/2019-04-proposal/proposal
---
This change encapsulates UTXO set data within CChainState instances, removing global data `pcoinsTip` and `pcoinsviewdb`. This is necessary if we want to maintain multiple chainstates with their own rendering of the UTXO set.
We introduce a class CoinsViews which consolidates the construction of a CCoins* hierarchy.
This commit could be broken into smaller pieces, but it would require more ephemeral diffs to, e.g., temporarily change CCoinsViewDB's constructor invocations.
ACKs for top commit:
Sjors:
reACK 582d2cd747
MarcoFalke:
ACK 582d2cd747
Tree-SHA512: ec9d904fe5dca8cd2dc4b7916daa5d8bab30856dd4645987300f905e0a19f9919fce4f9d1ff03eda982943ca73e6e9a746be6cf53b46510de36e8c81a1eafba1
RPC server starts in warmup mode, it can't
process yet calls, then follows connection manager
initialization and finally RPC server get out of
warmup mode. RPC calls shouldn't be able to get
P2P disabled errors because once we initialize
g_connman it's not unset until shutdown, after
RPC server has been stopped.
Access through a broadcastTransaction method.
Add a wait_callback flag to turn off race protection when wallet
already track its tx being in mempool
Standardise highfee, absurdfee variable name to max_tx_fee
We drop the P2P check in BroadcastTransaction as g_connman is only
called by RPCs and the wallet scheduler, both of which are initialized
after g_connman is assigned and stopped before g_connman is reset.
9bc8b28c1d refactor : use RelayTransaction in BroadcastTransaction utility (Antoine Riard)
Pull request description:
Implementing suggestion in https://github.com/bitcoin/bitcoin/pull/15713#discussion_r306571420.
Seems a reason of these node utilities is to glue with already there functions, so we should reuse them.
ACKs for top commit:
MarcoFalke:
ACK 9bc8b28c1d
promag:
ACK 9bc8b28c1d, verified there are no more `PushInventory(CInv(MSG_TX, ...`, nice refactor, 👍 @amitiuttarwar.
jnewbery:
ACK 9bc8b28c1d
jonatack:
ACK 9bc8b28c1d, second @jnewbery's suggestions, my guess is they could be added without risking delaying this PR.
Tree-SHA512: 841c65d5f0d9ead5380814bb2260d7ebf03f2a9bfa58a1025785d353bdb42f9122cc257993e6a7bd2bd3f2c74db19c5978cc14be0d83258124ca22e33d6d0164
4d94916f0d Get rid of PendingWalletTx class. (Russell Yanofsky)
Pull request description:
No reason for this class to exist if it doesn't have any code to run in the destructor. e10e1e8db0 from https://github.com/bitcoin/bitcoin/pull/16208 recently removed the destructor code that would return an unused key if the transaction wasn't committed.
This is just cleanup, there's no change in behavior.
ACKs for top commit:
ariard:
utACK 4d94916. Successfully built both `bitcoind` and `bitcoin-qt`. `PendingWalletTx` was only a wrapper to enforce call to `ReturnDestination` if `CommitTransaction` doesn't `KeepDestination` before.
promag:
ACK 4d94916f0d, refactor looks good to me.
meshcollider:
utACK 4d94916f0d
Tree-SHA512: f3f93d2f2f5d8f1e7810d609d881c1b1cbbaa8629f483f4293e20b3210292605e947bc4903fde9d2d8736277ca3bd6de182f7eac1e13515d5a327f2ebc130839
fa6f402bde Call node->initError instead of InitError from GUI code (Russell Yanofsky)
fad2502240 init: Use InitError for all errors in bitcoind/qt (MarcoFalke)
Pull request description:
Using the same InitError for startup error in the daemon and the gui makes it possible to run the tests with the gui again:
```sh
BITCOIND=bitcoin-qt ./test/functional/test_runner.py feature_includeconf feature_config_args
ACKs for top commit:
hebasto:
ACK fa6f402bde
ryanofsky:
utACK fa6f402bde. Only changes since last review are removing more includes and adding Node::initError method to avoid accessing node `InitError` function and global variables from GUI code.
Tree-SHA512: bd19e08dcea4019dfe40356bc5c63cb583cefed54b6c9dcfb82f1b5b00308d8e2b363549afcaea5e93bf83864dbe0917400c3b70f43a8a5bdff45c9cd34cc294
No reason for this class to exist if it doesn't have any code to run in the
destructor. e10e1e8db0 from
https://github.com/bitcoin/bitcoin/pull/16208 recently removed code destructor
code that would return an unused key if the transaction wasn't committed.
e10e1e8db0 Restrict lifetime of ReserveDestination to CWallet::CreateTransaction (Gregory Sanders)
d9ff862f2d CreateTransaction calls KeepDestination on ReserveDestination before success (Gregory Sanders)
Pull request description:
The typical usage pattern of `ReserveDestination` is to explicitly `KeepDestination`, or `ReturnDestination` when it's detected it will not be used.
Implementers such as myself may fail to complete this pattern, and could result in key re-use: https://github.com/bitcoin/bitcoin/pull/15557#discussion_r271956393
Since ReserveDestination is currently only used directly in the `CreateTransaction`/`CommitTransaction` flow(or fee bumping where it's just used in `CreateTransaction`), I instead make the assumption that if a transaction is returned by `CreateTransaction` it's highly likely that it will be accepted by the caller, and the `ReserveDestination` kept. This simplifies the API as well. There are very few cases where this would not be the case which may result in keys being burned.
Those failure cases appear to be:
`CommitTransaction` failing to get the transaction into the mempool
Belt and suspenders check in `WalletModel::prepareTransaction`
Alternative to https://github.com/bitcoin/bitcoin/pull/15796
ACKs for top commit:
achow101:
ACK e10e1e8db0 Reviewed the diff
stevenroose:
utACK e10e1e8db0
meshcollider:
utACK e10e1e8db0
Tree-SHA512: 78d047a00f39ab41cfa297052cc1e9c224d5f47d3d2299face650d71827635de077ac33fb4ab9f7dc6fc5a27f4a68415a1bc9ca33a3cb09a78f4f15b2a48411b
93ce4a0b6f Move WatchOnly stuff from SigningProvider to CWallet (Andrew Chow)
8f5b81e6ed Remove CCryptoKeyStore and move all of it's functionality into CWallet (Andrew Chow)
37a79a4fcc Move various SigningProviders to signingprovider.{cpp,h} (Andrew Chow)
16f8096e91 Move KeyOriginInfo to its own header file (Andrew Chow)
d9becff4e1 scripted-diff: rename CBasicKeyStore to FillableSigningProvider (Andrew Chow)
a913e3f2fb Move HaveKey static function from keystore to rpcwallet where it is used (Andrew Chow)
c7797ec655 Remove CKeyStore and squash into CBasicKeyStore (Andrew Chow)
1b699a5083 Add HaveKey and HaveCScript to SigningProvider (Andrew Chow)
Pull request description:
This PR compresses the `CWallet` chain of inheritance from 5 classes to 3 classes. `CBasicKeyStore` is renamed to `FillableSigningProvider` and some parts of it (the watchonly parts) are moved into `CWallet`. `CKeyStore` and `CCrypoKeyStore` are completely removed. `CKeyStore`'s `Have*` functions are moved into `SigningProvider` and the `Add*` moved into `FillableSigningProvider`, thus allowing it to go away entirely. `CCryptoKeyStore`'s functionality is moved into `CWallet`. The new inheritance chain is:
```
SigningProvider -> FillableSigningProvider -> CWallet
```
`SigningProvider` now is the class the provides keys and scripts and indicates whether keys and scripts are present. `FillableSigningProvider` allows keys and scripts to be added to the signing provider via `Add*` functions. `CWallet` handles all of the watchonly stuff (`AddWatchOnly`, `HaveWatchOnly`, `RemoveWatchOnly` which were previously in `CKeyStore`) and key encryption (previously in `CCryptoKeyStore`).
Implements the 2nd [prerequisite](https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Wallet-Class-Structure-Changes#cwallet-subclass-stack) from the wallet restructure.
ACKs for top commit:
Sjors:
re-ACK 93ce4a0; it keeps `EncryptSecret`, `DecryptSecret` and `DecryptKey` in `wallet/crypter.cpp`, but makes them not static. It improves alphabetical includes, reorders some function definitions, fixes commit message, brings back lost code comment.
instagibbs:
utACK 93ce4a0b6f
Tree-SHA512: 393dfd0623ad2dac38395eb89b862424318d6072f0b7083c92a0d207fd032c48b284f5f2cb13bc492f34557de350c5fee925da02e47daf011c5c6930a721b6d3
8e7f930828 Add GetNewChangeDestination for getting new change Destinations (Andrew Chow)
33d13edd2b Replace CReserveKey with ReserveDestinatoin (Andrew Chow)
172213be5b Add GetNewDestination to CWallet to fetch new destinations (Andrew Chow)
Pull request description:
The wallet should give out destinations instead of keys. It should be the one that handles the conversion from key to destination and the setting of the label, not the caller. In order to do this, two new member functions are introduced `GetNewDestination()` and `GetNewChangeDestination()`. Additionally, `CReserveKey` is changed to be `ReserveDestination` and represents destinations whose keys can be returned to the keypool.
ACKs for top commit:
instagibbs:
re-utACK 8e7f930828
sipa:
ACK 8e7f930828. Concept ACK as this gives a much cleaner abstraction to work with, and light code review ACK.
laanwj:
ACK 8e7f930828
Tree-SHA512: 5be7051409232b71e0ef2c1fd1a3e76964ed2f5b14d47d06edc2ad3b3687abd0be2803a1adc45c0433aa2c3bed172e14f8a7e9f4a23bff70f86260b5a0497500
Instead of having the same multiple lines of code everywhere
that new destinations are fetched, introduce GetNewDestination as
a member function of CWallet which does the key fetching, label
setting, script generation, and destination generation.
67f4e9c522 Include core_io.h from core_read.cpp (practicalswift)
eca9767673 Make reasoning about dependencies easier by not including unused dependencies (practicalswift)
Pull request description:
Make reasoning about dependencies easier by not including unused dependencies.
Please note that the removed headers are _not_ "transitively included" by other still included headers. Thus the removals are real.
As an added bonus this change means less work for the preprocessor/compiler. At least 51 393 lines of code no longer needs to be processed:
```
$ git diff -u HEAD~1 | grep -E '^\-#include ' | cut -f2 -d"<" | cut -f1 -d">" | \
sed 's%^%src/%g' | xargs cat | wc -l
51393
```
Note that 51 393 is the lower bound: the real number is likely much higher when taking into account transitively included headers :-)
ACKs for commit 67f4e9:
Tree-SHA512: 0c8868aac59813f099ce53d5307eed7962dd6f2ff3546768ef9e5c4508b87f8210f1a22c7e826c3c06bebbf28bdbfcf1628ed354c2d0fdb9a31a42cefb8fdf13
403e677c9 refactoring: IsInitialBlockDownload -> CChainState (James O'Beirne)
3ccbc376d refactoring: FlushStateToDisk -> CChainState (James O'Beirne)
4d6688603 refactoring: introduce ChainstateActive() (James O'Beirne)
d7c97edee move-only: make the CChainState interface public (James O'Beirne)
Pull request description:
This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11):
Parent PR: #15606
Issue: #15605
Specification: https://github.com/jamesob/assumeutxo-docs/tree/2019-04-proposal/proposal
---
This changeset starts moving functionality intimately related to CChainState into methods. Parameterizing these functions by a particular CChainState is necessary for the use of multiple chainstates simultaneously (e.g. for asynchronous background validation).
In this change, we
- make the CChainState interface public - since other units will start to invoke its methods directly,
- introduce `::ChainstateActive()`, the CChainState equivalent for `::ChainActive()`,
- and move `IsInitialBlockDownload()` and `FlushStateToDisk()` into methods on CChainState.
Independent of assumeutxo, these changes better encapsulate chainstate behavior and allow easier use from a testing context.
There are more methods that we'll move in the future, but they require other substantial changes (i.e. moving ownership of the `CCoinsView*` hierarchy into CChainState) so we'll save them for future PRs.
---
The first move-only commit is most easily reviewed with `git diff ... --color-moved=dimmed_zebra`.
ACKs for commit 403e67:
Empact:
utACK 403e677c9e no need to address my nits herein
Sjors:
utACK 403e677
ryanofsky:
utACK 403e677c9e. Only change since previous review is removing global state comment as suggested.
MarcoFalke:
utACK 403e677c9e, though the diff still seems a bit bloated with some unnecessary changes in the second commit.
promag:
utACK 403e677 and rebased with current [master](c7cfd20a7).
Tree-SHA512: 6fcf260bb2dc201361170c0b4547405366f5f331fcc3a2bac29b24442814b7b244ca1b58aac5af716885f9a130c343b544590dff780da0bf835c7c5b3ccb2257
