Previously, ChainStateFlushed would fire either if a full flush
completed (which can happen due to memory limits, forced flush, or
on its own DATABASE_WRITE_INTERVAL timer) *or* on a
ChainStateFlushed-specific DATABASE_WRITE_INTERVAL timer. This is
both less clear for clients (as there are no guarantees about a
flush having actually happened prior to the call), and reults in
extra flushes not clearly intended by the code. We drop the second
case, providing a strong guarantee without removing the periodit
timer-based flushing.
This much more accurately captures the meaning of the callback.
-BEGIN VERIFY SCRIPT-
sed -i 's/SetBestChain/ChainStateFlushed/g' src/validationinterface.h src/validationinterface.cpp src/wallet/wallet.h src/wallet/wallet.cpp src/validation.cpp src/index/txindex.h src/index/txindex.cpp
-END VERIFY SCRIPT-
1accfbc Output values for "min relay fee not met" error (Kristaps Kaupe)
Pull request description:
It is already done this way for "mempool min fee not met" error.
Tree-SHA512: 829db78ecc066cf93b8e93ff1aeb4e7b98883cf45f341d5be6e6b4dff4135f3f54fa49b3a6f12eb43f676a9ba54f981143c9887f786881e584370434a9566cfd
18326ae [doc] Add comments for chainparams.h, validation.cpp (James O'Beirne)
Pull request description:
Added a few comments during a leisurely read through some of the validation code. If this kind of thing seems useful, I can add similar documentation for most of the `CChainState` interface.
Tree-SHA512: a4d9db60383a8ff02e74ac326ed88902eec1ee441e8cd4e1845bcf257072673c15974225288cebf0a633e76a3410f99e2206616b4694725a2a5b0d19c78327d6
e4d0b44 Consistently log CValidationState on failure (Ben Woosley)
Pull request description:
This replaces potential silent failures and partial logging with full logging. Seems providing at least minimal visibility to the failure is a good practice. E.g. `FlushStateToDisk` can return a rare but meaningful out of disk space error that would be better to note than leave out.
Note many of these are related to `ActivateBestChain` or `FlushStateToDisk`. Only a few cases of ignored state remain, e.g. LoadExternalBlockFile and RelayWalletTransaction, where I expect logging would likely be spammy.
Tree-SHA512: fb0e521039e5a5250cd9c82e7a8676423b5e3899d495649c0e71752059d1984e5175f556386ade048f51a7d59f5c8e467df7fe91d746076f97d24c000ccf7891
cf02779 Add logging and error handling for file syncing (Wladimir J. van der Laan)
Pull request description:
Add logging and error handling inside, and outside of FileCommit.
Functions such as fsync, fdatasync will return error in case of hardware I/O errors, and ignoring this means it can silently continue through data corruption.
(c.f. https://lwn.net/SubscriberLink/752063/12b232ab5039efbe/)
EINVAL is handled specially to avoid crashing out on (network, fuse) filesystems that don't handle `f[data]sync`.
I checked that the syncing inside leveldb is already generating an I/O error as appropriate.
Tree-SHA512: 64cc9bbedca3ecc97ff4bac0a7b7ac6526a7ed763c66f6786d03ca4f2e9e366e42b152cb908299c060448d98ca39ff03395280bffaca51d592e728aa2516f5dd
Add logging and error handling inside, and outside of FileCommit.
Functions such as fsync, fdatasync will return error in case of hardware
I/O errors, and ignoring this means it can silently continue through
data corruption. (c.f.
https://lwn.net/SubscriberLink/752063/12b232ab5039efbe/)
3cc9094 scripted-diff: Rename CChainState::g_failed_blocks to m_failed_blocks (Ben Woosley)
Pull request description:
To reflect its actual status as a member rather than a global value.
g_failed_blocks was previously global: 2862aca40f
Tree-SHA512: a0e679a151e0fb70d245a7a1821449d0a4738f5ba503abca9f19d9cfbcbb0e72a1598e3364e29775b0c203acd6d04d882d2788208f685edc57aaba5e946fde3b
8b56fc0b91 [qa] Test that v0 segwit outputs can't be spent pre-activation (Suhas Daftuar)
ccb8ca42a4 Always enforce SCRIPT_VERIFY_WITNESS with P2SH (Suhas Daftuar)
5c31b20a35 [qa] Remove some pre-activation segwit tests (Suhas Daftuar)
95749a5836 Separate NULLDUMMY enforcement from SEGWIT enforcement (Suhas Daftuar)
ce650182f4 Use P2SH consensus rules for all blocks (Suhas Daftuar)
Pull request description:
As discussed at the IRC meeting back in October (https://botbot.me/freenode/bitcoin-core-dev/2017-10-12/?msg=92231929&page=2), I had looked into the feasibility of enforcing P2SH and SCRIPT_VERIFY_WITNESS back to the genesis block.
The P2SH change is pretty straightforward -- there was only one historical block on mainnet that violated the rule, so I carved out an exception to it, similar to the way we have exceptions for the BIP30 violators.
The segwit change is not entirely as clear. The code changes themselves are relatively straightforward: we can just always turn on SCRIPT_VERIFY_WITNESS whenever P2SH is active. However conceptually, this amounts to splitting up BIP141 into two parts, the part that implements new script rules, and the part that handles witness commitments in blocks.
Arguably though the script rules are really defined in BIP 143 anyway, and so this really amounts to backdating BIP 143 -- script rules for v0 segwit outputs -- back to genesis. So maybe conceptually this isn't so bad...
I don't feel strongly about this change in either direction; I started working on it because I was searching for a way to simplify the way we understand and implement the consensus rules around segwit, but I'm not yet sure whether I think this achieves anything toward that goal.
ping @TheBlueMatt
Tree-SHA512: 73551d4a983eb9792c7ac67f56005822528ac4d1fd52c27cee6d305ebee953f69687ef4ddee8bdc0fec77f77e6b5a9d669750793efee54c076533a095e233042
Seems providing at least minimal visibility to the failure is a good practice.
The only remaining ignored state is in LoadExternalBlockFile, where logging
would likely be spammy.
To reflect its actual status as a member rather than a global value.
g_failed_blocks was previously global: 2862aca40f
-BEGIN VERIFY SCRIPT-
sed -i 's/g_failed_blocks/m_failed_blocks/g' src/validation.cpp
-END VERIFY SCRIPT-
0ef7b40 [doc] Fix comment in FindForkInGlobalIndex (James O'Beirne)
Pull request description:
The comment erroneously implies that we're searching `chainActive` for the
first block common to `locator`, but we're using the parameter `chain`.
Tree-SHA512: 42ba0fb378597820bdf1eaff1e3e284097baa312e7dd8448421c8c71aa91c353ea6c840860afcb7725f392431f3134d4feb271b96ab7058a62f84f48e468e714
This commit moves P2SH activation back to the genesis block, with
a hardcoded exception for the one historical block in the chain that
violated this rule.
4a6c0e3dcf Modernize best block mutex/cv/hash variable naming (Pieter Wuille)
45dd135039 Fix csBestBlock/cvBlockChange waiting in rpc/mining (Pieter Wuille)
Pull request description:
This is an alternative to #11694.
It reintroduces a uint256 variable with the best block hash, protected by csBestBlock, and only updated while holding it.
Also rename the involved variable to modern guidelines, as there are very few uses.
Tree-SHA512: 826a86c7d3cee7fe49f99f4398ae99e81cb0563197eaeba77306a3ca6072b67cdb932bc35720fc0f99c2a57b218efa029d0b8bdfb240591a629b2e90efa3199d
FlushStateToDisk(...) won't do anything besides check if we need to prune if
FLUSH_STATE_NONE is given. We avoid reading the variable fCheckForPruning
which is guarded by the mutex cs_LastBlockFile.
0e7c52d Shut down if trying to connect a corrupted block (Suhas Daftuar)
Pull request description:
(Updated OP after reworking the approach)
Shut down if a corrupted block is found in ConnectBlock(). This prevents an infinite loop trying to connect such a block, and alerts the node operator that there may be potential hardware failure.
Tree-SHA512: f20d56aa9d36d6eeff4c3d13c0fbd14f06a57701bd13c2416d36f0cc4235f81f752139e336a073617e8e803782c5096c960108af122b19a51227de512e9095ee
d207207 [logging] add lint-logs.sh to check for newline termination. (John Newbery)
5c21e6c [logging] Comment all continuing logs. (John Newbery)
Pull request description:
Check that all calls to LogPrintf() are terminated by a newline,
except those that are explicitly marked as 'continued' logs.
Tree-SHA512: fe5162b2b2df1e8a4c807da87584fa9af97a6b8377e4090fe0caa136d90bf29a487a123cde94569bdce7101fee3478196d99aa13f1212e24bfe5f41c773604fc
Most logs should terminated with a '\n'. Some logs
are built up over multiple calls to logPrintf(), so
do not need a newline terminater. Comment all of
these 'continued' logs as a linter hing.
b55555d rpc: Add testmempoolaccept (MarcoFalke)
Pull request description:
To check if a single raw transaction makes it into the current transaction pool, one had to call `sendrawtransaction`. However, on success, this adds the transaction to the mempool with no easy way to undo.
The call `testmempoolaccept` is introduced to provide a way to solely check the result without changing the mempool state.
Tree-SHA512: 5afd9311190135cee8fc1f229c7d39bf893f1028f29e28d34f70df820198ff97b4bf86b41cbbd6e6c36a5c30073cefa92d541c74a4939c7a2a6fa283dfd41b63
a7c45bc Add native support for serializing char arrays without FLATDATA (Pieter Wuille)
Pull request description:
Support is added to serialize arrays of type `char` or `unsigned char` directly, without any wrappers. All invocations of the `FLATDATA` wrappers that are obsoleted by this are removed.
This includes a patch by @ryanofsky to make `char` casting type safe.
The serialization of `CSubNet` is changed to serialize a `bool` directly rather than though `FLATDATA`. This makes the serialization independent of the size of the bool type (and will use 1 byte everywhere).
This is a small change taken from #10785.
Tree-SHA512: a41f61ca5fdc2fadb2d0e1702351a58a23841d551f505292a9542602cdb19f90d8944b8df14b872810a56bd201648fa4c0e958f3e9427fe829886284e85b9bfd
adc2586 doc: Refer to witness reserved value as spec. in the BIP (MarcoFalke)
Pull request description:
BIP141 refers to the coinbase's input's witness that consists of a single 32-byte array as "witness reserved value".
This updates the code to follow the BIP
Tree-SHA512: 49c9463519bd11b9ff322eeecd638f7627aa8efdfb869f8549f9a160ff34281e1b5a0b9d83545a692de6f5ff795055292c423403b0f3ce7597e3f32273cf1deb
a192636 -blocksdir: keep blockindex leveldb database in datadir (Jonas Schnelli)
f38e4fd QA: Add -blocksdir test (Jonas Schnelli)
386a6b6 Allow to optional specify the directory for the blocks storage (Jonas Schnelli)
Pull request description:
Since the actual block files taking up more and more space, it may be desirable to have them stored in a different location then the data directory (use case: SSD for chainstate, etc., HD for blocks).
This PR adds a `-blocksdir` option that allows one to keep the blockfiles and the blockindex external from the data directory (instead of creating symlinks).
I fist had an option to keep the blockindex within the datadir, but seems to make no sense since accessing the index will (always) lead to access (r/w) the block files.
Tree-SHA512: f8b9e1a681679eac25076dc30e45e6e12d4b2d9ac4be907cbea928a75af081dbcb0f1dd3e97169ab975f73d0bd15824c00c2a34638f3b284b39017171fce2409
1f45e21 scripted-diff: Convert 11 enums into scoped enums (C++11) (practicalswift)
Pull request description:
Rationale (from Bjarne Stroustrup's ["C++11 FAQ"](http://www.stroustrup.com/C++11FAQ.html#enum)):
>
> The enum classes ("new enums", "strong enums") address three problems with traditional C++ enumerations:
>
> * conventional enums implicitly convert to int, causing errors when someone does not want an enumeration to act as an integer.
> * conventional enums export their enumerators to the surrounding scope, causing name clashes.
> * the underlying type of an enum cannot be specified, causing confusion, compatibility problems, and makes forward declaration impossible.
>
> The new enums are "enum class" because they combine aspects of traditional enumerations (names values) with aspects of classes (scoped members and absence of conversions).
Tree-SHA512: 9656e1cf4c3cabd4378c7a38d0c2eaf79e4a54d204a3c5762330840e55ee7e141e188a3efb2b4daf0ef3110bbaff80d8b9253abf2a9b015cdc4d60b49ac2b914
Support is added to serialize arrays of type char or unsigned char directly,
without any wrappers. All invocations of the FLATDATA wrappers that are
obsoleted by this are removed.
This includes a patch by Russell Yanofsky to make char casting type safe.
The serialization of CSubNet is changed to serialize a bool directly rather
than though FLATDATA. This makes the serialization independent of the size
of the bool type (and will use 1 byte everywhere).
f98b54352 Only call NotifyBlockTip when the active chain changes (James O'Beirne)
152b7fb25 [tests] Add a (failing) test for waitforblockheight (James O'Beirne)
Pull request description:
This is a subset of the more controversial https://github.com/bitcoin/bitcoin/pull/12407, but this also adds a test demonstrating the bug.
In InvalidateBlock, we're calling NotifyBlockTip with the now-invalid block's prev regardless of what chain the ancestor block is on. This could create numerous issues, but it at least screws up `waitforblockheight` (or anything else relying on `rpc/blockchain.cpp:latestblock`) when InvalidateBlock is called on a block not in chainActive, which can happen via RPC.
Only call NotifyBlockTip when the block being marked invalid is on the active chain.
Tree-SHA512: 9a54fe5e8c7eb489daf5df4483c0986129e871e2ca931a456ba869ecb5d5a8d4f7bd27ccc9e711e9292c9ed79ddef896c85d0e81fc76883503e327995b0e914f
92fabcd44 Add LookupBlockIndex function (João Barbosa)
43a32b739 Add missing cs_lock in CreateWalletFromFile (João Barbosa)
f814a3e8f Fix cs_main lock in LoadExternalBlockFile (João Barbosa)
c651df8b3 Lock cs_main while loading block index in AppInitMain (João Barbosa)
02de6a6bc Assert cs_main is held when accessing mapBlockIndex (João Barbosa)
Pull request description:
Replace all `mapBlockIndex` lookups with the new `LookupBlockIndex()`. In some cases it avoids a second lookup.
Tree-SHA512: ca31118f028a19721f2191d86f2dd398144d04df345694575a64aeb293be2f85785201480c3c578a0ec99690516205708558c0fd4168b09313378fd4e60a8412
* Z is the zone designator for the zero UTC offset.
* T is the delimiter used to separate date and time.
This makes it clear for the end-user that the date/time logged is
specified in UTC and not in the local time zone.
5b8b38775 Fix overly eager BIP30 bypass (Alex Morcos)
Pull request description:
In #6931 we introduced a possible consensus breaking change by misunderstanding how completely BIP 34 obviated the need for BIP 30. Unfixed, this could break consensus after block height about 1.9M. Explained in code comment.
h/t @sdaftuar
Tree-SHA512: 8f798c3f203432fd4ae1c1c08bd6967b4a5ec2064ed5f6a7dcf3bff34ea830952838dd4ff70d70b5080cf4644f601e5526b60456c08f43789e4aae05621d9d6b
