This replaces the current benchmarking framework with nanobench [1], an
MIT licensed single-header benchmarking library, of which I am the
autor. This has in my opinion several advantages, especially on Linux:
* fast: Running all benchmarks takes ~6 seconds instead of 4m13s on
an Intel i7-8700 CPU @ 3.20GHz.
* accurate: I ran e.g. the benchmark for SipHash_32b 10 times and
calculate standard deviation / mean = coefficient of variation:
* 0.57% CV for old benchmarking framework
* 0.20% CV for nanobench
So the benchmark results with nanobench seem to vary less than with
the old framework.
* It automatically determines runtime based on clock precision, no need
to specify number of evaluations.
* measure instructions, cycles, branches, instructions per cycle,
branch misses (only Linux, when performance counters are available)
* output in markdown table format.
* Warn about unstable environment (frequency scaling, turbo, ...)
* For better profiling, it is possible to set the environment variable
NANOBENCH_ENDLESS to force endless running of a particular benchmark
without the need to recompile. This makes it to e.g. run "perf top"
and look at hotspots.
Here is an example copy & pasted from the terminal output:
| ns/byte | byte/s | err% | ins/byte | cyc/byte | IPC | bra/byte | miss% | total | benchmark
|--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|---------------:|--------:|----------:|:----------
| 2.52 | 396,529,415.94 | 0.6% | 25.42 | 8.02 | 3.169 | 0.06 | 0.0% | 0.03 | `bench/crypto_hash.cpp RIPEMD160`
| 1.87 | 535,161,444.83 | 0.3% | 21.36 | 5.95 | 3.589 | 0.06 | 0.0% | 0.02 | `bench/crypto_hash.cpp SHA1`
| 3.22 | 310,344,174.79 | 1.1% | 36.80 | 10.22 | 3.601 | 0.09 | 0.0% | 0.04 | `bench/crypto_hash.cpp SHA256`
| 2.01 | 496,375,796.23 | 0.0% | 18.72 | 6.43 | 2.911 | 0.01 | 1.0% | 0.00 | `bench/crypto_hash.cpp SHA256D64_1024`
| 7.23 | 138,263,519.35 | 0.1% | 82.66 | 23.11 | 3.577 | 1.63 | 0.1% | 0.00 | `bench/crypto_hash.cpp SHA256_32b`
| 3.04 | 328,780,166.40 | 0.3% | 35.82 | 9.69 | 3.696 | 0.03 | 0.0% | 0.03 | `bench/crypto_hash.cpp SHA512`
[1] https://github.com/martinus/nanobench
* Adds support for asymptotes
This adds support to calculate asymptotic complexity of a benchmark.
This is similar to #17375, but currently only one asymptote is
supported, and I have added support in the benchmark `ComplexMemPool`
as an example.
Usage is e.g. like this:
```
./bench_bitcoin -filter=ComplexMemPool -asymptote=25,50,100,200,400,600,800
```
This runs the benchmark `ComplexMemPool` several times but with
different complexityN settings. The benchmark can extract that number
and use it accordingly. Here, it's used for `childTxs`. The output is
this:
| complexityN | ns/op | op/s | err% | ins/op | cyc/op | IPC | total | benchmark
|------------:|--------------------:|--------------------:|--------:|----------------:|----------------:|-------:|----------:|:----------
| 25 | 1,064,241.00 | 939.64 | 1.4% | 3,960,279.00 | 2,829,708.00 | 1.400 | 0.01 | `ComplexMemPool`
| 50 | 1,579,530.00 | 633.10 | 1.0% | 6,231,810.00 | 4,412,674.00 | 1.412 | 0.02 | `ComplexMemPool`
| 100 | 4,022,774.00 | 248.58 | 0.6% | 16,544,406.00 | 11,889,535.00 | 1.392 | 0.04 | `ComplexMemPool`
| 200 | 15,390,986.00 | 64.97 | 0.2% | 63,904,254.00 | 47,731,705.00 | 1.339 | 0.17 | `ComplexMemPool`
| 400 | 69,394,711.00 | 14.41 | 0.1% | 272,602,461.00 | 219,014,691.00 | 1.245 | 0.76 | `ComplexMemPool`
| 600 | 168,977,165.00 | 5.92 | 0.1% | 639,108,082.00 | 535,316,887.00 | 1.194 | 1.86 | `ComplexMemPool`
| 800 | 310,109,077.00 | 3.22 | 0.1% |1,149,134,246.00 | 984,620,812.00 | 1.167 | 3.41 | `ComplexMemPool`
| coefficient | err% | complexity
|--------------:|-------:|------------
| 4.78486e-07 | 4.5% | O(n^2)
| 6.38557e-10 | 21.7% | O(n^3)
| 3.42338e-05 | 38.0% | O(n log n)
| 0.000313914 | 46.9% | O(n)
| 0.0129823 | 114.4% | O(log n)
| 0.0815055 | 133.8% | O(1)
The best fitting curve is O(n^2), so the algorithm seems to scale
quadratic with `childTxs` in the range 25 to 800.
fadf6bd04f refactor: Remove unused request.fHelp (MarcoFalke)
fad889cbf0 wallet: Make RPC help compile-time static (MarcoFalke)
Pull request description:
Currently calling `help` on a wallet RPC method will either return `help: unknown command: getnewaddress` or the actual help. This runtime dependency of the help is a bug that complicates any tool that relies on documentation. Also, the code that enables the bug is overly complicated and confusing.
The fix is split into two commits:
* First, a commit that can be reviewed with the `--color-moved=dimmed-zebra` option and tested with the included test.
* Second, a commit that removes the complicated and confusing code.
ACKs for top commit:
achow101:
re-ACK fadf6bd04f
promag:
Tested ACK fadf6bd04f.
Tree-SHA512: 65d4ff400467f57cb8415c30ce30f814dc76c5c157308b7a7409c59ac9db629e65dfba31cd9c389cfe60a008d3d87787ea0a0e0f2671fd65fd190543c915493d
dca73941eb scripted-diff: rename node to peer for mininodes (gzhao408)
0474ea25af [test] fix race conditions and test in p2p_filter (gzhao408)
4ef80f0827 [test] sending invalid msgs to node with bloomfilters=0 causes disconnect (gzhao408)
497a619386 [test] add BIP 37 test for node with fRelay=false (gzhao408)
e8acc60156 [test] add mempool msg test for node with bloomfilter enabled (gzhao408)
Pull request description:
This PR adds a few tests that are bloomfilter-related, including behavior for when bloomfilters are turned _off_:
1. Tests p2p message `msg_mempool`: a node that has `peerbloomfilters` enabled should send its mempool (disabled behavior already tested [here](https://github.com/bitcoin/bitcoin/blob/master/test/functional/p2p_mempool.py)).
2. Tests that bloomfilter peers with [`fRelay=False`](https://github.com/bitcoin/bips/blob/master/bip-0037.mediawiki#extensions-to-existing-messages) in the `version` message should not receive any invs until they set the filter. The rest is the same as what’s already tested in `p2p_filter.py`.
3. Tests that peers get disconnected if they send `filterload` or `filteradd` p2p messages to a node with bloom filters disabled.
4. Refactor: renames p2p_mempool.py to p2p_nobloomfilter_messages.py.
5. Fixes race conditions in p2p_filter.py
ACKs for top commit:
MarcoFalke:
ACK dca73941eb only changes is restoring accidentally deleted test 🍮
jonatack:
ACK dca73941eb modulo a few nits if you retouch, happy to re-ACK if you take any of them but don't feel obliged to.
Tree-SHA512: 442aeab0755cb8b830251ea170d1d5e6da8ac9029b3276d407a20ee3d588cc61b77b8842368de18c244056316b8c63b911776d6e106bc7c023439ab915b27ad3
cf5b8f64b3 tests: Add fuzzing harness for {Read,Write}{LE,BE}{16,32,64} (crypto/common.h) (practicalswift)
4a8181b303 tests: Add std::vector<uint8_t> ConsumeFixedLengthByteVector(FuzzedDataProvider& fuzzed_data_provider, const size_t length) (practicalswift)
Pull request description:
Add fuzzing harness for `{Read,Write}{LE,BE}{16,32,64}` (`crypto/common.h`).
See [`doc/fuzzing.md`](https://github.com/bitcoin/bitcoin/blob/master/doc/fuzzing.md) for information on how to fuzz Bitcoin Core. Don't forget to contribute any coverage increasing inputs you find to the [Bitcoin Core fuzzing corpus repo](https://github.com/bitcoin-core/qa-assets).
Happy fuzzing :)
ACKs for top commit:
MarcoFalke:
ACK cf5b8f64b3
Tree-SHA512: 26412daa6987add1c721ad0348a5a894d68a646e724f328f2db6d9c9358a533481d8888b89d4b0743e9d1c11aa4e0e5341eb4c0d05a4da77b15ab75489327749
3a83a01694 [tests] move generate_wif_key to wallet_util.py (John Newbery)
b216b0b71f [tests] sort imports in rpc_createmultisig.py (John Newbery)
e38081846d Revert "[TESTS] Move base58 to own module to break circular dependency" (John Newbery)
Pull request description:
generate_wif_key is a wallet utility function. Move it from the EC key module to the wallet util module.
This fixes the circular dependency issue in #17977
ACKs for top commit:
MarcoFalke:
ACK 3a83a01694🍪
Tree-SHA512: 24985dffb75202721ccc0c6c5b52f1fa5d1ce7963bccde24389feb913cab4dad0c265274ca67892c46c8b64e6a065a0f23263a89be4fb9134dfefbdbe5c7238a
f42f5e58f5 refactor: Combine GetWalletForJSONRPCRequest and EnsureWalletIsAvailable functions (Russell Yanofsky)
Pull request description:
This simplifies control flow and also helps get rid of the ::vpwallets variable in #19101 since EnsureWalletIsAvailable doesn't have access to the request context.
ACKs for top commit:
MarcoFalke:
ACK f42f5e58f5 (reviewed code to check that this is a refactor) 💢
promag:
Tested ACK f42f5e58f5.
Tree-SHA512: eb10685de3db3c1d10c3a797d8da5c8c731e4a8c9024bbb7245929ba767a77a52783a739b8cb1fa7af6fcd233dcf9c8ebbe414eb8b902e2542601aac18625997
fa98e10d5e test: Remove leftover comment in mining_basic (MarcoFalke)
faedb50d89 test: pep-8 mining_basic (MarcoFalke)
Pull request description:
Remove an accidental leftover comment from #19082, which no longer applies and thus might be confusing
ACKs for top commit:
adamjonas:
code review ACK fa98e10
Tree-SHA512: c7f7f8f579b3c6e92f45769be0a7af1a421438a3f5524db5278b2269511a9e0e08f44e3836afb26727644035897ee51ff8296d13ce23030549e7403f57b40e40
-A node with bloomfilters disabled should disconnect peers that send
msg_mempool, msg_filterload, or msg_filteradd.
-Renamed the test because it now has a wider scope and msg_mempool's
actual functionality makes more sense for p2p_filter.py.
-msg_mempool is currently only tested with bloomfilter disabled
(node is disconnected) in p2p_mempool.py
-msg_mempool should get mempool txns in response when bloomfilter
is enabled
-edit test that doesn't test msg_mempool as intended
c75de5da5f [TESTS] Move base58 to own module to break circular dependency (Pieter Wuille)
Pull request description:
I encountered difficulties with the test framework in #17977. This fixes them, and I think the change is generally useful.
ACKs for top commit:
laanwj:
Code review ACK c75de5da5f
MarcoFalke:
ACK c75de5da5f according to --color-moved=dimmed-zebra this is a move-only apart from the imports 👒
Tree-SHA512: 9e0493de3e279074f0c70e92c959b73ae30479ad6f2083a3c6bbf4b0191d65ef94854559a5b7c904f5dadc5e93129ed00f6dc0a8ccce6ba7921cd45f7119f74b
d49612f98a Make SetMiscWarning() accept bilingual_str argument (Hennadii Stepanov)
d1ae7c0355 Make GetWarnings() return bilingual_str (Hennadii Stepanov)
38e33aa481 refactor: Make GetWarnings() bilingual_str aware internally (Hennadii Stepanov)
Pull request description:
This is one more step for consistent usage of `bilingual_str`.
No new translation messages are defined.
ACKs for top commit:
laanwj:
Code review ACK d49612f98a
MarcoFalke:
ACK d49612f98a🌂
Tree-SHA512: 7413cb94a85291209c182845f6873350bb9e9ce940647d416c462a136603832fec8a63d792341bf634f07629767c78bc206d3a318cf10c7e87241c114c2496e9
948f1134bc gui: add missing translation.h include to fix build (fanquake)
Pull request description:
After #19176, building the gui on Bionic is failing with:
```bash
CXX qt/qt_libbitcoinqt_a-guiutil.o
qt/bitcoin.cpp: In function 'int GuiMain(int, char**)':
qt/bitcoin.cpp:460:35: error: 'Untranslated' was not declared in this scope
node->initError(strprintf(Untranslated("Error parsing command line arguments: %s\n"), error));
```
The merge commit also failed to compile with the same error:
https://travis-ci.org/github/bitcoin/bitcoin/jobs/696627543
ACKs for top commit:
hebasto:
ACK 948f1134bc, tested on Linux Mint 19.3 (x86_64): it fixes compiling error with the `--disable-wallet` configure option.
Tree-SHA512: db0197b110b3a7d05af2ceb29fbe9eeb6521d28f53b6267aa6d07a975886adb5c6485af79506ab6c66ed101e32292feeaff3707cdbc11432e5b97400953d5631
After #19176, building the gui on Bionic is failing with:
```bash
CXX qt/qt_libbitcoinqt_a-guiutil.o
qt/bitcoin.cpp: In function 'int GuiMain(int, char**)':
qt/bitcoin.cpp:460:35: error: 'Untranslated' was not declared in this scope
node->initError(strprintf(Untranslated("Error parsing command line arguments: %s\n"), error));
```
The merge commit also failed to compile with the same error:
https://travis-ci.org/github/bitcoin/bitcoin/jobs/696627543
6fe989054f refactor: Change Node::initError to take bilingual_str (Wladimir J. van der Laan)
425e7cb8cf refactor: Put`TryParsePermissionFlags` in anonymous namespace (Wladimir J. van der Laan)
77b79fa6ef refactor: Error message bilingual_str consistency (Wladimir J. van der Laan)
Pull request description:
A straightforward and hopefully uncontroversial refactor to improve consistency.
- Move the decision whether to translate an individual error message to where it is defined. This simplifies call sites: no more `InitError(Untranslated(SomeFunction(...)))`.
- Make all functions in `util/error.h` consistently return a `bilingual_str`. We've decided to use this as error message type so let's roll with it.
This has no functional changes: no messages are changed, no new translation messages are defined.
Also make a function static that can be static.
ACKs for top commit:
MarcoFalke:
ACK 6fe989054f🔣
hebasto:
ACK 6fe989054f, tested on Linux Mint 19.3 (x86_64).
Tree-SHA512: 1dd123ef285c4b50bbc429b2f11c9a63aaa669a84955a0a9b8134e9dc141bc38f863f798e8982ac68bbe83170e1067a87d1a87fe7f791928b7914e10bbc2ef8d
6fc641644f change blacklist to blocklist (TrentZ)
Pull request description:
Let's use a more appropriate and clear word and discard the usage of the blacklist. Blocklist is clear and shall make everyone happy.
ACKs for top commit:
amitiuttarwar:
ACK 6fc641644f
jonatack:
ACK 6fc641644f git grep shows these two lines to be the only uses of the word in the codebase other than for specifying colors for the GUI.
sipsorcery:
ACK 6fc641644f due to easy change.
Tree-SHA512: 12fd55ad5c79f1a227da90c7fa730972aae6b74ab1f9df79ec1e7d0eca05c383ef7d6ef5f353620a01da344db915005339b62ca0884179d0f47fbefb084c9efc
- Move the decision whether to translate an error message to where it is
defined. This simplifies call sites: no more `InitError(Untranslated(...))`.
- Make all functions in `util/error.h` consistently return a
`bilingual_str`. We've decided to use this as error message type so
let's roll with it.
This has no functional changes: no messages are changed, no new
translation messages are defined.
bacbfb61ee refactor: Replace RecursiveMutex with Mutex in warnings.cpp (Hennadii Stepanov)
Pull request description:
The functions that could lock this mutex, i.e., `SetMiscWarning()`, `{S,G}etfLargeWorkForkFound()`, `SetfLargeWorkInvalidChainFound()`, `GetWarnings()`, do not call itself recursively, and do not call each other either directly or indirectly. Therefore, the `g_warnings_mutex` could be a non-recursive mutex.
Related to #19180.
ACKs for top commit:
laanwj:
Code review ACK bacbfb61ee
MarcoFalke:
ACK bacbfb61ee , reviewed with -W --word-diff-regex=. 🎿
Tree-SHA512: cc06d3d30e4051115d176dcfbd496c8562a70087369bccde756c1de42d7dc3f415ef20d3d69ad2599c1d0cd4228d604d7564adc17beac7b6ff92b924b8c20d54
b00266fe0c refactor: replace pointers by references within tx_verify.{h,cpp} (Sebastian Falbesoner)
Pull request description:
This PR gets rid of another unnecessary use of raw pointers, similar to PR #19053 (see also issue #19062 where useful commands for finding potential candidates are listed) but in the tx verification module.
For the functions `CalculateSequenceLocks()` and `SequenceLocks()`, the `prevHeights` vector parameter type is changed to be passed as a reference. Note that there were no checks for null pointers -- if one would pass `nullptr` to one of the functions, the following line would immediately lead to a crash:
dcacea096e/src/consensus/tx_verify.cpp (L32)
ACKs for top commit:
Empact:
Code Review ACK b00266fe0c
Tree-SHA512: 0eb71591467905434082029128bdca4df94988c372af40dca325654f6c002c72a00c73776cb5e72d6de2b2f218649211a5dbf19300a2e01f1841d6034e0f01e0
34645c4dd0 Test txinwitness is accessible on coinbase vin (Rod Vagg)
3e4421070a Expose txinwitness for coinbase in JSON form (Rod Vagg)
Pull request description:
## Rationale
The CLI can provide you with everything about transactions and blocks that you need to reconstruct the block structure and raw block itself **except** for the witness commitment nonce which is stored in the `scriptWitness` of the coinbase and is not printed. You could manually parse the raw `"hex"` fields for transactions if you really wanted to, but this seems to defeat the point of having a JSONification of the raw block/transaction data.
Without the nonce you can't:
1. calculate and validate the witness commitment yourself, you can generate the witness tx merkle root but you don't have the nonce to combine it with
2. reconstruct the raw block form because you don't have `scriptWitness` stack associated with the coinbase (although you know how big it will be and can guess the common case of `[0x000...000]`)
I'm building some archiving tooling for block data and being able to do a validated two-way conversion is very helpful.
## What
This PR simply makes the `txinwitness` field not dependent on whether we are working with the coinbase or not. So you get it for the coinbase as well as the rest.
## Examples
Common case of a `[0x000...000]` nonce: 00000000000000000000140a7289f3aada855dfd23b0bb13bb5502b0ca60cdd7
```json
"vin": [
{
"coinbase": "0368890904c1fe8d5e2f706f6f6c696e2e636f6d2ffabe6d6d5565843a681160cf7b08b1b74ac90a719e6d6ab28c16d336b924f0dc2fcabdc6010000000000000051bf2ad74af345dbe642154b2658931612a70d195e007add0100ffffffff",
"txinwitness": [
"0000000000000000000000000000000000000000000000000000000000000000"
],
"sequence": 4294967295
}
],
...
```
Novel nonce value: 000000000000000000008c31945b2012258366cc600a3e9a3ee0598e8f797731
```json
"vin": [
{
"coinbase": "031862082cfabe6d6d80c099b5e21f4c186d54eb292e17026932e52b1b807fa1380574c5adc1c843450200000000000000",
"txinwitness": [
"5b5032506f6f6c5d5b5032506f6f6c5d5b5032506f6f6c5d5b5032506f6f6c5d"
],
"sequence": 4294967295
}
],
...
```
## Alternatives
This field could be renamed for the coinbase, `"witnessnonce"` perhaps. It could also be omitted when null/zero (`0x000...000`).
## Tests
This didn't break any tests and I couldn't find an obvious way to include a test for this. If this is desired I'd apreicate some pointers.
ACKs for top commit:
MarcoFalke:
ACK 34645c4dd0
Tree-SHA512: b192facc1dfd210a5ec3f0d5d1ac6d0cae81eb35be15eaa71f60009a538dd6a79ab396f218434e7e998563f7f0df2c396cc925cb91619f6841c5a67806148c85
34e641a564 test: Remove unnecessary disconnect_nodes call in rpc_psbt.py (Danny Lee)
e6e7abd51a test: remove redundant two-way disconnect_nodes calls (Danny Lee)
a9bd1f9adf test: warn if nodes not connected before disconnect_nodes (Danny Lee)
Pull request description:
There's no harm in calling `disconnect_nodes` for nodes that weren't connected (in this case it's a no-op). However, detecting this case and logging a warning can help ensure that tests are behaving as expected.
In addition, since `disconnect_nodes` works bidirectionally, I removed all instances of this pattern:
```
disconnect_nodes(self.nodes[0], 1)
disconnect_nodes(self.nodes[1], 0)
```
ACKs for top commit:
MarcoFalke:
review ACK 34e641a564👔
amitiuttarwar:
ACK 34e641a564. Thanks for this test improvement!
Tree-SHA512: 344855ceb46c012d43c13d7c09f44d32dcb7645706d10ae1e4645d9edca54c6c6c13fee26b79480755cdfcdf39b4b5770b36bb03ce71ba002d5be8a27fe008af
cb38b069b0 util: Don't reference errno when pthread fails. (MIZUTA Takeshi)
Pull request description:
Pthread library does not set errno.
Pthread library's errno is returned by return value.
ACKs for top commit:
practicalswift:
ACK cb38b069b0 -- patch looks correct
MarcoFalke:
review ACK cb38b069b0
hebasto:
ACK cb38b069b0, only squashed commits since the [previous](https://github.com/bitcoin/bitcoin/pull/19194#pullrequestreview-425831739) review.
Tree-SHA512: e6c950e30726e5031db97a7b84c8a9215da5ad3e5d233bcc349f812ad15957ddfe378e26d18339b9e0a5dcac2f50b47a687b87a6a6beaf6139df84f31531321e
fa2c2b50d8 doc: Extract net permissions doc (MarcoFalke)
Pull request description:
Moving the documentation of each flag form the already over-large init.cpp into the net permissions module should clean up the code a bit. Moreover, making the documentation available is also required for an (currently imaginary) `setnetpermissions` RPC.
ACKs for top commit:
Sjors:
re-utACK fa2c2b50d8
Tree-SHA512: c0a75facc9768913c28d2ffcdfaad8d60f7604d5584ee546adaf77d270563558d361aeaf354e49e349aca7e2e80814b27ffc24247e7b4f045c63cbdc079b449f
cc5c0d2299 refactor: Fix formatting of timedata.cpp (Hennadii Stepanov)
c2410ceb84 refactor: Replace RecursiveMutex with Mutex in timedata.cpp (Hennadii Stepanov)
Pull request description:
Only `GetTimeOffset()` and `AddTimeData()` functions lock this mutex. They do not call itself recursively, and do not call each other either directly or indirectly. Therefore, the `g_timeoffset_mutex` could be a non-recursive mutex.
Related to #19180.
ACKs for top commit:
MarcoFalke:
ACK cc5c0d2299 , checked the second commit with --word-diff-regex=. --ignore-all-space -U0 🦉
vasild:
ACK cc5c0d22 verified that recursion is not happening
Tree-SHA512: 38f6df689374d4a1a0e9aedb3ed5e885d8285c4da6b75f9bc84ae036936a159ef8276462db33b4f4dd5c71c6312fa9b45380f7a5726959665bc71dc39031be88
78c8f4fe11 refactor: Replace RecursiveMutex with Mutex in netbase.cpp (Hennadii Stepanov)
Pull request description:
The functions that could lock this mutex, i.e., `{S,G}etProxy()`, `{S,G}etNameProxy()`, `HaveNameProxy()`, `IsProxy()`, do not call itself recursively, and do not call each other either directly or indirectly. Therefore, the `g_proxyinfo_mutex` could be a non-recursive mutex.
Related to #19180.
ACKs for top commit:
MarcoFalke:
ACK 78c8f4fe11 , reviewed with the -W git option 👮
vasild:
ACK 78c8f4fe verified that recursion does not happen
Tree-SHA512: fc077fb371f38af5d05f1383c6bebf9926167c257892936fefd2d4fe6f679ca40124d25099e09f645d8ec266df222f96c5d0f9fd39eddcad15cbde0b427bc205
1a9ef1d398 refactor: Replace RecursiveMutex with Mutex in Shutdown() (Hennadii Stepanov)
Pull request description:
Step by step, going to replace all of the `RecursiveMutex` instances with the `Mutex` ones throughout the code base :)
Not sure if it is possible in all cases though...
This one is a low-hanging fruit.
ACKs for top commit:
MarcoFalke:
ACK 1a9ef1d398 Shutdown is not recursive, so the same thread can never lock twice (UB)
vasild:
ACK 1a9ef1d3 verified manually that `Shutdown()` is not called from places that could be called from inside `Shutdown()`.
Tree-SHA512: 362a507b1a6f97dc351f708224aedbfe4bee03c4398f394d78ee31c24d76a7012ffff0e6766866cd5fd9a8e0d8840f05a2741111fe583aa20d45f0af3df0dcfa
Pthread library does not set errno.
Pthread library's errno is returned by return value.
Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
