* build: detect the presence of libgmp before generating Makefile
* depends: add arximboldi/immer@v0.6.2 as a package and add detection
* depends: remove immer from source tree, build using package only
* Drop immer refs from tools
Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
fdf82ba18 Update all subprocess.check_output functions in CI scripts to be Python 3.4 compatible (Graham Krizek)
Pull request description:
CI is failing the `lint` stage on every Cron run (regular PR/Push runs still pass). The failure was introduced in 74ce326 and has been broken since. The Python version running in CI was downgraded to 3.4 from 3.6. There were a couple files that were using the `encoding` argument in the `subprocess.check_output` function. This was introduced in Python 3.6 and therefore broke the scripts that were using it. The `universal_newlines` argument was used as well, but in order to use it we must be able to set encoding because of issues on some BSD systems.
To get CI to pass, I removed all `universal_newline` and `encoding` args to the `check_ouput` function. Then I decoded all `check_output` return values. This should keep the same behavior but be Python 3.4 compatible.
Tree-SHA512: f5e5885e98cf4777be9cc254446a873eedb03bdccbd8e06772a964db95e9fcf46736aa9cdcab1d8f123ea9f4947ed6020679898d8b2f47ffb1d94c21a4b08209
31926ee8cfc73501524dfa0fef2ccbaa786d6a00 [test] functional framework: add CScript hex() for Python 3.4 (Sjors Provoost)
74ce32683199b987e45eb16f0320ae392ff10edc [test] Travis: enforce Python 3.4 support in functional tests (Sjors Provoost)
Pull request description:
The minimum supported version of Python is 3.4 according to [dependencies.md](https://github.com/bitcoin/bitcoin/blob/master/doc/dependencies.md). This PR makes the Travis linter use this version in order to catch accidental use of modern syntax.
Tree-SHA512: 71b2c102be72b135a8ba049378d66875760f20a04a657102a399240c5c2b2ddbdfa7d5ab4c0c0242ecc3259e0ee8eb2273f331bc5eb824f4ae4c3cc58aea37ac
* refactor/bls: misc refactoring and spelling/grammar fixes in bls code
* refactor/evo: misc refactoring and spelling/grammar fixes in evo code
* refactor: some include changes
* refactor: remove redundant `public`
* fix linter
Signed-off-by: pasta <pasta@dashboost.org>
* Sort includes
* Move `class CTxDSIn;`
* Drop unused functions in CBLSWorker
Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
d117f4541d4717e83c9396273e92960723622030 Add test for setban (nicolas.dorier)
dc7529abf0197dccb876dc4a93cbdd2ad9f03e5c [Fix] Allow connection of a noban banned peer (nicolas.dorier)
Pull request description:
Reported by @MarcoFalke on https://github.com/bitcoin/bitcoin/pull/16248#discussion_r314026195
The bug would mean that if the peer connecting to you is banned, but whitelisted without specific permissions, it would not be able to connect to the node.
The solution is just to move the same line below.
ACKs for top commit:
Sjors:
Agree inline is more clear. utACK d117f45
MarcoFalke:
ACK d117f4541d4717e83c9396273e92960723622030
Tree-SHA512: 0fed39acb1e8db67bb0bf4c4de3ad034ae776f38d55bd661f1ae0e1a4c6becaf1824ab46ed8279f2f31df3f4b29ff56461d8b167d3e9cece62cfe58b5a912811
72351784b3df21a89f79076f4b814a6e700b6469 lint: Remove travis env var from commit linter (Fabian Jahr)
Pull request description:
#19439 was recently merged and seemed to work fine but I now noticed strange behavior when it was running in Travis, which I could not reproduce locally. It turns out `TRAVIS_COMMIT_RANGE` which is used in Travis to get the commits for the linter, uses all the commits that were in a push, which includes all rebase commits for example. This means that the linter can fail on a commit that the developer has never even seen before, which can be very confusing. See an example here which caused me to look into this: https://travis-ci.org/github/bitcoin/bitcoin/jobs/714296381 The commit that is reported as failing in my PR is not part of my PR.
I think we rather want to use something like `git merge-base` to get the commit range by default and in Travis. I am leaving the env variable functionality in place with a different name but this is not a variable that can be expected to be present in the CI environments so the `merge-base` range should be used there by default.
ACKs for top commit:
hebasto:
ACK 72351784b3df21a89f79076f4b814a6e700b6469, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: afb27bb386855cb8d5cf84fd3a6c11ef1160b25af6175ed0aa146bf04b9a26eb77298df70df0a855f8c46f19f08b3f62c49872c12974fcfa5526a15ee05b3c10
284a969cc082ae3c63ab523f22e71da86ad4ab20 Linter to check commit message formatting (Amir Ghorbanian)
Pull request description:
Write linter to check that commit messages have a new line before the body or no body at all. fixes issue #19091.
ACKs for top commit:
troygiorshev:
ACK 284a969cc082ae3c63ab523f22e71da86ad4ab20 Reviewed, manually tested. Works great!
fjahr:
tested ACK 284a969cc082ae3c63ab523f22e71da86ad4ab20
adamjonas:
utACK 284a969cc082ae3c63ab523f22e71da86ad4ab20
Tree-SHA512: fa278f090780b54e4fa6e2967a62b4c1a4da55d112ec1ad6dd7e1181ac490c5c1af0165524b5781b463fdd6d0f79fd3d95b5160184e6eca432ccff1189f77390
* Update to leveldb upstream using subtree merge
* Import crc32c using subtree merge as as 'src/crc32c'
* build: Update build system for new leveldb
Upstream leveldb switched build systems, which means we need to define
a few different values.
Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
* doc: Add crc32c subtree to developer notes
* test: Add crc32c to subtree check linter
* test: Add crc32c exception to various linters and generation scripts
* build: Add LCOV exception for crc32c
Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
* build: CRC32C build system integration
Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
2a95c7c95690112a03b14ccb0fb8f66db12cb75b ci: Check for submodules (Emil Engler)
Pull request description:
See #18019.
The current solution looks like this (I also tested with multiple submodules):
```
These submodules were found, delete them:
355a5a310019659d9bf6818d2fd66fbb214dfed7 curl (curl-7_68_0-108-g355a5a310)
```
The submodule example command was `git submodule add https://github.com/curl/curl.git curl`
ACKs for top commit:
laanwj:
ACK 2a95c7c95690112a03b14ccb0fb8f66db12cb75b
Tree-SHA512: 64bf388123f0a88d12e3e41ff29bc190339377a0615c35dc3f2700bb7773470a8fa426e0ff57188a60ed88bded39f75082ff0b73118651ff403b163422395005
60582d6060542c1e3a23141ea825e36818fbbd54 [linter] Strip trailing / in path for git-subtree-check (John Newbery)
Pull request description:
git-subtree-check fails if the directory is given with a trailing slash,
eg:
```
> test/lint/git-subtree-check.sh src/univalue/
ERROR: src/univalue/ is not a subtree
```
Shell autocompletes will add the trailing slash when autofilling the
path name, which will therefore cause the script to fail.
Just ignore any trailing slash.
ACKs for top commit:
laanwj:
ACK 60582d6060542c1e3a23141ea825e36818fbbd54
dongcarl:
ACK 60582d6060542c1e3a23141ea825e36818fbbd54
fanquake:
ACK 60582d6060542c1e3a23141ea825e36818fbbd54 - tested before and after.
Tree-SHA512: 5a91979b60e1d4b1310fd02a0ccc5465dbff57d9c94bba81e4758442a627cfa32217ab8f973990a17b5d961ecae61fb56b56ccf10f87e61dd03e88a1e0b8f99d
2c3eade704 Make fs::path::string() always return utf-8 string (Chun Kuan Lee)
Pull request description:
Imbue `fs::path` with `std::codecvt_utf8_utf16` at `SetupEnvironment()`, so that default string encoding will be utf-8 inside `fs::path`.
Tree-SHA512: 0cb59464d777278decbf24771fc5ff0cb2caa7bc2fe8ee5cd36c97a2324873a3caad131f08f050393b488316ee7f4ab0b28b7fa4699e41839f8e51b9867d5118
# Conflicts:
# src/qt/guiutil.cpp
bb6ca65f9890e8280ace32de5a37774e14705859 gui: get special folder in unicode (Chun Kuan Lee)
1c5d22585384c8bb05a27a04eab5c57b31d623fb Drop boost::scoped_array (Chun Kuan Lee)
Pull request description:
Drop boost::scoped_array and simplify the code.
`TCHAR` should be defined as `wchar_t` if `UNICODE` is defined. So we can use `.toStdWString().c_str()` to get wchar_t C-style string.
Fix#13819
Tree-SHA512: 3fd4aa784129c9d1576b01e6ee27faa42d793e152d132f2dde504d917dad3a8e95e065fcbc54a3895d74fb6b2a9ed4f5ec67d893395552f585e225486a84a454
# Conflicts:
# src/qt/guiutil.cpp
490da639cbd48ce0dc438abbfc89ab796391cb2a Make lint-includes.sh work from any directory (Kristaps Kaupe)
Pull request description:
Before this change it works from root folder of bitcoin git repo, but if you do `cd test/lint; ./test-includes.sh`, you will have a lot of false positive messages like this:
```
Good job! The circular dependency "chainparamsbase -> util/system -> chainparamsbase" is no longer present.
Please remove it from EXPECTED_CIRCULAR_DEPENDENCIES in ./lint-circular-dependencies.sh
to make sure this circular dependency is not accidentally reintroduced.
Good job! The circular dependency "index/txindex -> validation -> index/txindex" is no longer present.
Please remove it from EXPECTED_CIRCULAR_DEPENDENCIES in ./lint-circular-dependencies.sh
to make sure this circular dependency is not accidentally reintroduced.
```
Top commit has no ACKs.
Tree-SHA512: 07fa69cb2883181dcee922191acac4b242722eeb2916cdffdc7163421302b22f3c9525aaf4c754a9dba1c307032c05285e38191d5c6aabc894321f8a27bbceaa
Change ctpl implementation to use STL queue & mutex.
Use ctpl synchronized queue instead of boost lockfree queue in bls worker aggregator.
Use smart pointers for memory management of Aggregator and VectorAggregator. With 'delete this;' the objects are prone to data race on the delete operator.
Use smart pointers for memory management of ContributionVerifier.
Pass shared_ptr by value to other threads via worker pool.
f3b90f2e05 Run all lint scripts (Julian Fleischer)
Pull request description:
The description reads:
```
# This script runs all contrib/devtools/lint-*.sh files, and fails if any exit
# with a non-zero status code.
```
This runs all scripts and returns with a non-zero exit code if any failed.
ACKs for commit f3b90f:
Tree-SHA512: 4f1f6435855dd5074a38c5887be6f096ec66f4dbe8712bdfd5fed0c510f1b2c083b7318cf3bfbdcc85982429fb7b4309e57ce48cc11736c86376658ec7ffea8f
414326952c use export LC_ALL=C.UTF-8 (Julian Fleischer)
728c82d029 make script exit if a command fails (Julian Fleischer)
506890b24d move remaining travis build steps into individual files (Julian Fleischer)
272306ea57 number .travis/ script according to build lifecycle and add README to explain (Julian Fleischer)
519e2739cf move lint stage up to resemble travis build ui (Julian Fleischer)
86d34f0e65 abort script in END_FOLD on non-zero exit code (Julian Fleischer)
4f2f88c7b0 move script sections info individual files and comply with shellcheck (Julian Fleischer)
Pull request description:
This PR is extracted from https://github.com/bitcoin/bitcoin/pull/13816 to make that one easier to review. It follows on https://github.com/bitcoin/bitcoin/pull/13849 and https://github.com/bitcoin/bitcoin/pull/13851
In here the shell script parts from `travis.yml` are extracted into `.travis/before_install.sh`, `.travis/install.sh`, `.travis/before_script.sh`, `.travis/script.sh`, and `.travis/lint.sh`.
This has the benefit that `test/lint/lint-shell.sh` will also shellcheck these parts. Also it makes the individual script parts more readable.
Tree-SHA512: c497e1687ceb1c1d795de177d3fc35af908bc8e3f781a871afabdecf031e581d4db229290627249e35ef7c09952bc34884e4734ea91d40f57b4a9efb85bba2e3
57281199b8 lint/format-strings: Correctly exclude escaped percent symbols (Luke Dashjr)
Pull request description:
The current code fails to exclude correctly for patterns like `"%%%X"`
Tree-SHA512: cac6f6fb3f06a9190310cd9764ec31cd7d636f9c831057622f418ae5fd2e1d80927a88f585d18f57b279ac21e81518f714dc1a25155377b9297741a73600461e
5d62dcf9cfb5c0b2511c10667ed47ec3b3610d72 lint: Make sure we read the command line inputs using utf-8 decoding in python (Chun Kuan Lee)
Pull request description:
Make sure we read the command line inputs using utf-8 decoding in python
occurred from travis cron job:
contrib/verify-commits/verify-commits.py should run with utf-8, otherwise it would raise UnicodeDecodeError
`UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 744: ordinal not in range(128)`
Tree-SHA512: 90e4ad57fdbbbecb0a21fc2d2b03a04f5ef125e54124719ef36e5a85326930b732b47534757a7c3a8730096f3947b009ec898191928b5c2d38f9f4b3e37db48d
# Conflicts:
# contrib/devtools/optimize-pngs.py
68400d8b96 tests: Use explicit imports (practicalswift)
Pull request description:
Enable automatic detection of undefined names in Python tests scripts. Remove wildcard imports.
Wildcard imports make it unclear which names are present in the namespace, confusing both readers and many automated tools.
An additional benefit of not using wildcard imports in tests scripts is that readers of a test script then can infer the rough testing scope just by looking at the imports.
Before this commit:
```
$ contrib/devtools/lint-python.sh | head -10
./test/functional/feature_rbf.py:8:1: F403 'from test_framework.util import *' used; unable to detect undefined names
./test/functional/feature_rbf.py:9:1: F403 'from test_framework.script import *' used; unable to detect undefined names
./test/functional/feature_rbf.py:10:1: F403 'from test_framework.mininode import *' used; unable to detect undefined names
./test/functional/feature_rbf.py:15:12: F405 bytes_to_hex_str may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:17:58: F405 CScript may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:25:13: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:26:31: F405 satoshi_round may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:26:60: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:30:41: F405 satoshi_round may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
./test/functional/feature_rbf.py:30:68: F405 COIN may be undefined, or defined from star imports: test_framework.mininode, test_framework.script, test_framework.util
$
```
After this commit:
```
$ contrib/devtools/lint-python.sh | head -10
$
```
Tree-SHA512: 3f826d39cffb6438388e5efcb20a9622ff8238247e882d68f7b38609877421b2a8e10e9229575f8eb6a8fa42dec4256986692e92922c86171f750a0e887438d9
f447a0a7079619f0d650084df192781cca9fd826 Remove program options from build system (Chun Kuan Lee)
11588c639e8912f1b28e981c1a2a0e4306dbd093 Replace boost program_options (Chun Kuan Lee)
Pull request description:
Concept from #12744, but without parsing negated options.
Tree-SHA512: 7f418744bb8934e313d77a5f162633746ef5d043de802b9c9cd9f7c1842e7e566eb5f171cd9e2cc13317281b2449c6fbd553fa4f09b837e6af2f5d2b2aabdca2
1fabd59e7 Break circular dependency: init -> * -> init by extracting shutdown.h (Ben Woosley)
e62fdfeea Drop unused init.h includes (Ben Woosley)
Pull request description:
Most includers just wanted to react to pending shutdown.
This isolates access to `fRequestShutdown` and limits access to the shutdown api functions, including the new `CancelShutdown` for setting it to `false`.
Tree-SHA512: df42f75dfbba163576710e9a67cf1228531fd99d70a2f187bfba0bcc476d6749cf88180a97e66a81bb5b6c3c7f0917de7402d26039ba7b644cb7509b02f7e267
ca1a093127c11bb2aea10bf96c38dbfb40f8d170 Add regression test: Don't assert(...) with side effects (practicalswift)
4c3c9c38699360f93d3c52a01a90ff15ee5e1a62 Don't assert(...) with side effects (practicalswift)
Pull request description:
Don't `assert(...)` with side effects.
From the developer notes:
> **Assertions should not have side-effects**
>
> Rationale: Even though the source code is set to refuse to compile with assertions disabled, having side-effects in assertions is unexpected and makes the code harder to understand
These assertions were introduced quite recently (in #14069 which was merged two days ago) and since this is a recurring thing (see #13534 – "Don't assert(foo()) where foo() has side effects" from May) I added a simple regression test for the most obvious common side effect.
Tree-SHA512: be65db9d8d5d0f5752152ba73fe3fbb0531880f156d3cd7dfdf1752709979b63214e46ae64b1adbe1e09fa121278f4087f4ae49bff16cf8f5aec16ea6bde3650
4441ad677a Make format string linter understand basic template parameter syntax (practicalswift)
Pull request description:
Make format string linter understand basic template parameter syntax.
Fixes issue described in https://github.com/bitcoin/bitcoin/pull/13705#issuecomment-412046126.
Thanks to @ken2812221 for reporting!
Tree-SHA512: 8fb995bc6b29d8b9926ef5969e02cf71c494e829434fcdeb4ed5fabad5ab96e86e5b8eea705e8a416927757b4fa4e58abc0fd4f483daa58c94e2c6fdcb8ee822
cbd9091ed5a76bb2e1e57cd0d8db035c15529341 refactor/lint: Add ignored suggestions to an array (Vidar Holen)
Pull request description:
By adding excluded shellcheck suggestions to an array, you can avoid the current duplication
between command and comments. This ensures that they never go out of sync, makes it easier to
add new ones, and improves the readability of related diffs.
Tree-SHA512: 04afced1d27fda940cc5e61d7f9ed04507c8f7f7dfd0031c09898a599c6de93695923a80cb3d515a0f0bf728847592d8680c15ac2e376b48726c03ca744f13a5
f652f85d0c88629b4284f69b179362254307fb55 qa: Ignore shellcheck warning SC2236 (João Barbosa)
Pull request description:
With shellcheck 0.6.0 the warning `SC2236 - Use -n instead of ! -z` is raised. This change adds that warning to the ignored list.
Tree-SHA512: 7b0dfbce55e5da4efb927e251257993cdf67cd1c90f8490d99fa75bf6e233bbee79ea1c59d28774994c59862c5eac061313aa154833284950fc844bda60a54e9
232f96f5c8a3920c09db92f4dbac2ad7d10ce8cf doc: Add release notes for -avoidpartialspends (Karl-Johan Alm)
e00b4699cc6d2ee5697d38dd6607eb2631c9b77a clean-up: Remove no longer used ivars from CInputCoin (Karl-Johan Alm)
43e04d13b1ffc02b1082176e87f420198b40c7b1 wallet: Remove deprecated OutputEligibleForSpending (Karl-Johan Alm)
0128121101fb3ee82f3abd3973a967a4226ffe0e test: Add basic testing for wallet groups (Karl-Johan Alm)
59d6f7b4e2f847ec1f2ff46c84e6157655984f85 wallet: Switch to using output groups instead of coins in coin selection (Karl-Johan Alm)
87ebce25d66952f5ce565bb5130dcf5e24049872 wallet: Add output grouping (Karl-Johan Alm)
bb629cb9dc567cc819724d9f4852652926e60cbf Add -avoidpartialspends and m_avoid_partial_spends (Karl-Johan Alm)
65b3eda458221644616d0fdd6ba0fe01bdbce893 wallet: Add input bytes to CInputCoin (Karl-Johan Alm)
a443d7a0ca333b0bae63e04b5d476f9ad9c7aeac moveonly: CoinElegibilityFilter into coinselection.h (Karl-Johan Alm)
173e18a289088c6087ba6fac708e322aa63b7a94 utils: Add insert() convenience templates (Karl-Johan Alm)
Pull request description:
This PR adds an optional (off by default) `-avoidpartialspends` flag, which changes coin select to use output groups rather than outputs, where each output group corresponds to all outputs with the same destination.
It is a privacy improvement, as each time you spend some output, any other output that is publicly associated with the destination (address) will also be spent at the same time, at the cost of fee increase for cases where coin select without group restriction would find a more optimal set of coins (see example below).
For regular use without address reuse, this PR should have no effect on the user experience whatsoever; it only affects users who, for some reason, have multiple outputs with the same destination (i.e. address reuse).
Nodes with this turned off will still try to avoid partial spending, if the fee of the resulting transaction is not greater than the fee of the original transaction.
Example: a node has four outputs linked to two addresses `A` and `B`:
* 1.0 btc to `A`
* 0.5 btc to `A`
* 1.0 btc to `B`
* 0.5 btc to `B`
The node sends 0.2 btc to `C`. Without `-avoidpartialspends`, the following coin selection will occur:
* 0.5 btc to `A` or `B` is picked
* 0.2 btc is output to `C`
* 0.3 - fee is output to (unique change address)
With `-avoidpartialspends`, the following will instead happen:
* Both of (0.5, 1.0) btc to `A` or `B` is picked (one or the other pair)
* 0.2 btc is output to `C`
* 1.3 - fee is output to (unique change address)
As noted, the pro here is that, assuming nobody sends to the address after you spend from it, you will only ever use one address once. The con is that the transaction becomes slightly larger in this case, because it is overpicking outputs to adhere to the no partial spending rule.
This complements #10386, in particular it addresses @luke-jr and @gmaxwell's concerns in https://github.com/bitcoin/bitcoin/pull/10386#issuecomment-300667926 and https://github.com/bitcoin/bitcoin/pull/10386#issuecomment-302361381.
Together with `-avoidreuse`, this fully addresses the concerns in #10065 I believe.
Tree-SHA512: 24687a4490ba59cf4198ed90052944ff4996653a4257833bb52ed24d058b3e924800c9b3790aeb6be6385b653b49e304453e5d7ff960e64c682fc23bfc447621
# Conflicts:
# src/Makefile.am
# src/bench/coin_selection.cpp
# src/wallet/coincontrol.h
# src/wallet/coinselection.cpp
# src/wallet/coinselection.h
# src/wallet/init.cpp
# src/wallet/test/coinselector_tests.cpp
# src/wallet/wallet.cpp
# src/wallet/wallet.h
# test/functional/test_runner.py
9b2704777c [doc] Include txindex changes in the release notes. (Jim Posen)
ed77dd6b30 [test] Simple unit test for TxIndex. (Jim Posen)
6d772a3d44 [rpc] Public interfaces to GetTransaction block until synced. (Jim Posen)
a03f804f2a [index] Move disk IO logic from GetTransaction to TxIndex::FindTx. (Jim Posen)
e0a3b80033 [validation] Replace tx index code in validation code with TxIndex. (Jim Posen)
8181db88f6 [init] Initialize and start TxIndex in init code. (Jim Posen)
f90c3a62f5 [index] TxIndex method to wait until caught up. (Jim Posen)
70d510d93c [index] Allow TxIndex sync thread to be interrupted. (Jim Posen)
94b4f8bbb9 [index] TxIndex initial sync thread. (Jim Posen)
34d68bf3a3 [index] Create new TxIndex class. (Jim Posen)
c88bcec93f [db] Migration for txindex data to new, separate database. (Jim Posen)
0cb8303241 [db] Create separate database for txindex. (Jim Posen)
Pull request description:
I'm re-opening #11857 as a new pull request because the last one stopped loading for people
-------------------------------
This refactors the tx index code to be in it's own class and get built concurrently with validation code. The main benefit is decoupling and moving the txindex into a separate DB. The primary motivation is to lay the groundwork for other indexers that might be desired (such as the [compact filters](https://github.com/bitcoin/bips/pull/636)). The basic idea is that the TxIndex spins up its own thread, which first syncs the txindex to the current block index, then once in sync the BlockConnected ValidationInterface hook writes new blocks.
### DB changes
At the suggestion of some other developers, the txindex has been split out into a separate database. A data migration runs at startup on any nodes with a legacy txindex. Currently the migration blocks node initialization until complete.
### Open questions
- Should the migration of txindex data from the old DB to the new DB block in init or should it happen in a background thread? The downside to backgrounding it is that `getrawtransaction` would return an error message saying the txindex is syncing while the migration is running.
### Impact
In a sample size n=1 test where I synced nodes from scratch, the average time [Index writing](https://github.com/bitcoin/bitcoin/blob/master/src/validation.cpp#L1903) was 3.36ms in master and 1.72ms in this branch. The average time between `UpdateTip` log lines for sequential blocks between 400,000 and IBD end on mainnet was 0.297204s in master and 0.286134s in this branch. Most likely this is just variance in IBD times, but I can try with some more trials if people want.
Tree-SHA512: 451fd7d95df89dfafceaa723cdf0f7b137615b531cf5c5035cfb54e9ccc2026cec5ac85edbcf71b7f4e2f102e36e9202b8b3a667e1504a9e1a9976ab1f0079c4
