In src/test/fuzz/script_sigcache.cpp, we should really be setting up a
full working BasicTestingSetup. The initialize_ function is only run
once anyway.
In src/test/txvalidationcache_tests.cpp, the Dersig100Setup inherits
from BasicTestingSetup, which should have already set up a global script
execution cache without the need to explicitly call
InitScriptExecutionCache.
It is part of the node library. Also, it won't be moved to the kernel
lib, as it will be pruned of ArgsManager.
-BEGIN VERIFY SCRIPT-
# Move module
git mv src/mempool_args.cpp src/node/
git mv src/mempool_args.h src/node/
# Replacements
sed -i 's:mempool_args\.h:node/mempool_args.h:g' $(git grep -l mempool_args)
sed -i 's:mempool_args\.cpp:node/mempool_args.cpp:g' $(git grep -l mempool_args)
sed -i 's:MEMPOOL_ARGS_H:NODE_MEMPOOL_ARGS_H:g' $(git grep -l MEMPOOL_ARGS_H)
-END VERIFY SCRIPT-
dd065dae9f refactor: Make mapBlocksUnknownParent local, and rename it (Hennadii Stepanov)
Pull request description:
This PR is a second attempt at #19594. This PR has two motivations:
- Improve code hygiene by eliminating a global variable, `mapBlocksUnknownParent`
- Fix fuzz test OOM when running too long ([see #19594 comment](https://github.com/bitcoin/bitcoin/pull/19594#issuecomment-958801638))
A minor added advantage is to release `mapBlocksUnknownParent` memory when the reindexing phase is done. The current situation is somewhat similar to a memory leak because this map exists unused for the remaining lifetime of the process. It's true that this map should be empty of data elements after use, but its internal metadata (indexing structures, etc.) can have non-trivial size because there can be many thousands of simultaneous elements in this map.
This PR helps our efforts to reduce the use of global variables. This variable isn't just global, it's hidden inside a function (it looks like a local variable but has the `static` attribute).
This global variable exists because the `-reindex` processing code calls `LoadExternalBlockFile()` multiple times (once for each block file), but that function must preserve some state between calls (the `mapBlocksUnknownParent` map). This PR fixes this by allocating this map as a local variable in the caller's scope and passing it in on each call. When reindexing completes, the map goes out of scope and is deallocated.
I tested this manually by reindexing on mainnet and signet. Also, the existing `feature_reindex.py` functional test passes.
ACKs for top commit:
mzumsande:
re-ACK dd065dae9f
theStack:
re-ACK dd065dae9f
shaavan:
reACK dd065dae9f
Tree-SHA512: 9cd20e44d2fa1096dd405bc107bc065ea8f904f5b3f63080341b08d8cf57b790df565f58815c2f331377d044d5306708b4bf6bdfc5ef8d0ed85d8e97d744732c
b4b657ba57 refactor: log `nEvicted` message in `LimitOrphans` then return void (chinggg)
Pull request description:
Fix https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49347
LimitOrphans() can log expired tx and it should log evicted tx as well instead of returning the `nEvicted` number for caller to print the message.
Since `LimitOrphans()` now returns void, the redundant assertion check in fuzz test is also removed.
Top commit has no ACKs.
Tree-SHA512: 18c41702321b0e59812590cd389f3163831d431f4ebdc3b3e1e0698496a6bdbac52288f28f779237a58813c6717da1a35e8933d509822978ff726c1b13cfc778
`LimitOrphans()` can log expired tx and it should log evicted tx as well
instead of returning the number for caller to print the message.
Since `LimitOrphans()` now return void, the redundant assertion check in
fuzz test is also removed.
fa57c449cf fuzz: Remove no-op SetMempoolConstraints (MacroFake)
Pull request description:
Now that the mempool no longer uses the args manager (after commit e4e201dfd9), there is no point setting the mempool limits after it is constructed.
Fix that by setting them once right before the mempool is constructed.
ACKs for top commit:
dongcarl:
utACK fa57c449cf
glozow:
utACK fa57c449cf
Tree-SHA512: d236f9cdcee8c2076272b82c97f8a5942f1ecf119ab36edafd42088ef97554592348a61e1fbe504fd52b30301ef0177813042599ad12e8cb95b4a20586c85bb0
fa28d0f3c3 scripted-diff: Replace NullUniValue with UniValue::VNULL (MacroFake)
fa962103e8 fuzz: refactor: Replace NullUniValue with UniValue{} (MacroFake)
Pull request description:
This refactor is needed to disable the (potentially expensive for large json) UniValue copy constructors.
ACKs for top commit:
fanquake:
ACK fa28d0f3c3
Tree-SHA512: 7d4204cce0a6fc4ecda96973de77d15b7e4c7caa3e0e890e1f5b9a4b9ace8b240b1f7565d6ab586e168a5fa1201b6c60a924868ef34d6abfbfd8ab7f0f99fbc7
3a61fc56a0 refactor: move CBlockIndex#ToString() from header to implementation (Jon Atack)
57865eb512 CDiskBlockIndex: rename GetBlockHash() to ConstructBlockHash() (Jon Atack)
99e8ec8721 CDiskBlockIndex: remove unused ToString() class member (Jon Atack)
14aeece462 CBlockIndex: ensure phashBlock is not nullptr before dereferencing (Jon Atack)
Pull request description:
Fix a few design issues, potential footguns and inconsistent behavior in the CBlockIndex and CDiskBlockIndex classes.
- Ensure phashBlock in `CBlockIndex#GetBlockHash()` is not nullptr before dereferencing and remove a now-redundant assert preceding a GetBlockHash() caller. This protects against UB here, and in case of failure (which would indicate a consensus bug), the debug log will print `bitcoind: chain.h:265: uint256 CBlockIndex::GetBlockHash() const: Assertion 'phashBlock != nullptr' failed. Aborted` instead of `Segmentation fault`.
- Remove the unused `CDiskBlockIndex#ToString()` class member, and mark the inherited `CBlockIndex#ToString()` public interface member as deleted to disallow calling it in the derived CDiskBlockIndex class.
- Rename the `CDiskBlockIndex GetBlockHash()` class member to `ConstructBlockHash()`, which also makes sense as they perform different operations to return a blockhash, and mark the inherited `CBlockIndex#GetBlockHash()` public interface member as deleted to disallow calling it in the derived CDiskBlockIndex class.
- Move `CBlockIndex#ToString()` from header to implementation, which also allows dropping `tinyformat.h` from the header file.
Rationale and discussion regarding the CDiskBlockIndex changes:
Here is a failing test on master that demonstrates the inconsistent behavior of the current design: calling the same inherited public interface functions on the same CDiskBlockIndex object should yield identical behavior, but does not.
```diff
diff --git a/src/test/validation_chainstatemanager_tests.cpp b/src/test/validation_chainstatemanager_tests.cpp
index 6dc522b421..dac3840f32 100644
--- a/src/test/validation_chainstatemanager_tests.cpp
+++ b/src/test/validation_chainstatemanager_tests.cpp
@@ -240,6 +240,15 @@ BOOST_FIXTURE_TEST_CASE(chainstatemanager_activate_snapshot, TestChain100Setup)
const CBlockIndex* tip = chainman.ActiveTip();
BOOST_CHECK_EQUAL(tip->nChainTx, au_data.nChainTx);
+ // CDiskBlockIndex "is a" CBlockIndex, as it publicly inherits from it.
+ // Test that calling the same inherited interface functions on the same
+ // object yields identical behavior.
+ CDiskBlockIndex index{tip};
+ CBlockIndex *pB = &index;
+ CDiskBlockIndex *pD = &index;
+ BOOST_CHECK_EQUAL(pB->GetBlockHash(), pD->GetBlockHash());
+ BOOST_CHECK_EQUAL(pB->ToString(), pD->ToString());
```
(build and run: `$ ./src/test/test_bitcoin -t validation_chainstatemanager_tests`)
The GetBlockHash() test assertion only passes on master because the different methods invoked by the current design happen to return the same result. If one of the two is changed, it fails like the ToString() assertion does.
Redefining inherited non-virtual functions is well-documented as incorrect design to avoid inconsistent behavior (see Scott Meyers, Effective C++, Item 36). Class usage is confusing when the behavior depends on the pointer definition instead of the object definition (static binding happening where dynamic binding was expected). This can lead to unsuspected or hard-to-track bugs.
Outside of critical hot spots, correctness usually comes before optimisation, but the current design dates back to main.cpp and it may possibly have been chosen to avoid the overhead of dynamic dispatch. This solution does the same: the class sizes are unchanged and no vptr or vtbl is added.
There are better designs for doing this that use composition instead of inheritance, or that separate the public interface from the private implementations. One example of the latter would be a non-virtual public interface that calls private virtual implementation methods, i.e. the Template pattern via the Non-Virtual Interface (NVI) idiom.
ACKs for top commit:
vasild:
ACK 3a61fc56a0
Tree-SHA512: 9ff358ab0a6d010b8f053ad8303c6d4d061e62d9c3755a56b9c9f5eab855d02f02bee42acc77dfa0cbf4bb5cb775daa72d675e1560610a29bd285c46faa85ab7
and mark the inherited CBlockIndex#GetBlockHash public interface member
as deleted, to disallow calling it in the derived CDiskBlockIndex class.
Here is a failing test on master demonstrating the inconsistent behavior of the
current design: calling the same inherited public interface functions on the
same CDiskBlockIndex object should yield identical behavior.
```diff
diff --git a/src/test/validation_chainstatemanager_tests.cpp b/src/test/validation_chainstatemanager_tests.cpp
index 6dc522b421..dac3840f32 100644
--- a/src/test/validation_chainstatemanager_tests.cpp
+++ b/src/test/validation_chainstatemanager_tests.cpp
@@ -240,6 +240,15 @@ BOOST_FIXTURE_TEST_CASE(chainstatemanager_activate_snapshot, TestChain100Setup)
const CBlockIndex* tip = chainman.ActiveTip();
BOOST_CHECK_EQUAL(tip->nChainTx, au_data.nChainTx);
+ // CDiskBlockIndex "is a" CBlockIndex, as it publicly inherits from it.
+ // Test that calling the same inherited interface functions on the same
+ // object yields identical behavior.
+ CDiskBlockIndex index{tip};
+ CBlockIndex *pB = &index;
+ CDiskBlockIndex *pD = &index;
+ BOOST_CHECK_EQUAL(pB->GetBlockHash(), pD->GetBlockHash());
+ BOOST_CHECK_EQUAL(pB->ToString(), pD->ToString());
+
```
The GetBlockHash() test assertion only passes on master because the different
methods invoked by the current design happen to return the same result. If one
of the two is changed, it fails like the ToString() assertion does.
Redefining inherited non-virtual functions is well-documented as incorrect
design to avoid inconsistent behavior (see Scott Meyers, "Effective C++", Item
36). Class usage is confusing when the behavior depends on the pointer
definition instead of the object definition (static binding happening where
dynamic binding was expected). This can lead to unsuspected or hard-to-track
bugs.
Outside of critical hot spots, correctness usually comes before optimisation,
but the current design dates back to main.cpp and it may possibly have been
chosen to avoid the overhead of dynamic dispatch. This solution does the same:
the class sizes are unchanged and no vptr or vtbl is added.
There are better designs for doing this that use composition instead of
inheritance or that separate the public interface from the private
implementations. One example of the latter would be a non-virtual public
interface that calls private virtual implementation methods, i.e. the Template
pattern via the Non-Virtual Interface (NVI) idiom.
facc2fa7b8 Use AutoFile where possible (MacroFake)
6666803c89 streams: Add AutoFile without ser-type and ser-version (MacroFake)
Pull request description:
This was done in the context of https://github.com/bitcoin/bitcoin/pull/25284 , but I think it also makes sense standalone.
The basic idea is that serialization type should not be initialized when it is not needed. Same for the serialization version.
So do this here for `AutoFile`. `CAutoFile` remains in places where it is not yet possible.
ACKs for top commit:
laanwj:
Code review ACK facc2fa7b8
fanquake:
ACK facc2fa7b8
Tree-SHA512: d82d024d55af57565ac53d9d1517afafc12b46964effba0332de62a6c77869356fa77f89e6d4834438fff44c45b64fccdf5a1358bfea03e28dfe55013b3c099d
8d8eeb422e [net processing] Remove CNode::nLocalServices (John Newbery)
5961f8eea1 [net] Return CService from GetLocalAddrForPeer and GetLocalAddress (dergoegge)
d9079fe18d [net processing] Remove CNode::nServices (John Newbery)
7d1c036934 [net processing] Replace fHaveWitness with CanServeWitnesses() (John Newbery)
f65e83d51b [net processing] Remove fClient and m_limited_node (John Newbery)
fc5eb528f7 [tests] Connect peer in outbound_slow_chain_eviction by sending p2p messages (John Newbery)
1f52c47d5c [net processing] Add m_our_services and m_their_services to Peer (John Newbery)
Pull request description:
Another step in #19398. Which services we offer to a peer and which services they offer to us is application layer data and should not be stored on `CNode`.
This is also a prerequisite for adding `PeerManager` unit tests (See #25515).
ACKs for top commit:
MarcoFalke:
ACK 8d8eeb422e🔑
jnewbery:
utACK 8d8eeb422e
mzumsande:
Code Review ACK 8d8eeb422e
Tree-SHA512: e772eb2a0a85db346dd7b453a41011a12756fc7cbfda6a9ef6daa9633b9a47b9770ab3dc02377690f9d02127301c3905ff22905977f758bf90b17a9a35b37523
cb3e9a1e3f Move {Load,Dump}Mempool to kernel namespace (Carl Dong)
aa30676541 Move DEFAULT_PERSIST_MEMPOOL out of libbitcoinkernel (Carl Dong)
06b88ffb8a LoadMempool: Pass in load_path, stop using gArgs (Carl Dong)
b857ac60d9 test/fuzz: Invoke LoadMempool via CChainState (Carl Dong)
b3267258b0 Move FopenFn to fsbridge namespace (Carl Dong)
ae1e8e3756 mempool: Use NodeClock+friends for LoadMempool (Carl Dong)
f9e8e5719f mempool: Improve comments for [GS]etLoadTried (Carl Dong)
813962da0b scripted-diff: Rename m_is_loaded -> m_load_tried (Carl Dong)
413f4bb52b DumpMempool: Pass in dump_path, stop using gArgs (Carl Dong)
bd4407817e DumpMempool: Use std::chrono instead of weird int64_t arthmetics (Carl Dong)
c84390b741 test/mempool_persist: Test manual savemempool when -persistmempool=0 (Carl Dong)
Pull request description:
This is part of the `libbitcoinkernel` project: #24303, https://github.com/bitcoin/bitcoin/projects/18
-----
This PR moves `{Dump,Load}Mempool` into its own `kernel/mempool_persist` module and introduces `ArgsManager` `node::` helpers in `node/mempool_persist_args`to remove the scattered calls to `GetBoolArg("-persistmempool", DEFAULT_PERSIST_MEMPOOL)`.
More context can be gleaned from the commit messages.
-----
One thing I was reflecting on as I wrote this was that in the long run, I think we should probably invert the validation <-> mempool relationship. Instead of mempool not depending on validation, it might make more sense to have validation not depend on mempool. Not super urgent since `libbitcoinkernel` will include both validation and mempool, but perhaps something for the future.
ACKs for top commit:
glozow:
re ACK cb3e9a1e3f via `git range-diff 7ae032e...cb3e9a1`
MarcoFalke:
ACK cb3e9a1e3f🔒
ryanofsky:
Code review ACK cb3e9a1e3f
Tree-SHA512: 979d7237c3abb5a1dd9b5ad3dbf3b954f906a6d8320ed7b923557f41a4472deccae3e8a6bca0018c8e7a3c4a93afecc502acd1e26756f2054f157f1c0edd939d
Also:
1. Have CChainState::LoadMempool and ::ThreadImport take in paths and
pass it through untouched to LoadMempool.
2. Make LoadMempool exit early if the load_path is empty.
3. Adjust the call to ::ThreadImport in ::AppInitMain to correctly pass
in an empty path if mempool persistence is disabled.
Not only does this increase coverage, it is also more correct in that
when ::LoadMempool is called with a mempool and chainstate, it calls
AcceptToMemoryPool with just the chainstate.
AcceptToMemoryPool will then act on the chainstate's mempool via
CChainState::GetMempool, which may be different from the mempool
originally passed to ::LoadMempool. (In this fuzz test's case, it
definitely is different)
Also, move DummyChainstate to its own file since it's now used by the
validation_load_mempool fuzz test to replace CChainState's m_mempool.
Also introduce node::{ShouldPersistMempool,MempoolPath} helper functions
in node/mempool_persist_args.{h,cpp} which are used by non-kernel
DumpMempool callers to determine whether or not to automatically dump
the mempool and where to dump it to.
0101d2bc3c [net] Move eviction logic to its own file (dergoegge)
c741d748d4 [net] Move ConnectionType to its own file (Cory Fields)
a3c2707039 [net] Add connection type to NodeEvictionCandidate (dergoegge)
42aa5d5b62 [net] Add NoBan status to NodeEvictionCandidate (dergoegge)
Pull request description:
This PR splits of the first couple commits from #25268 that move the inbound eviction logic from `net.{h,cpp}` to `eviction.{h,cpp}`.
Please look at #25268 for motivation and conceptual review.
ACKs for top commit:
jnewbery:
utACK 0101d2bc3c
theuni:
utACK 0101d2bc3c. I quickly verified with `git --color-moved` that the move-only changes are indeed move-only.
Tree-SHA512: e0c345a698030e049cb22fe281b44503c04403c5be5a3750ca14bfcc603a162ac6bac9a39552472feb57c460102b7ca91430b8ad6268f2efccc49b5e8959331b
6eb0909cb7 fuzz: add low-level target for txorphanage (chinggg)
Pull request description:
This adds a low-level fuzz target for orphan transaction handling by creating random transactions and calling all functions in `TxOrphanage`.
It cannot simulate real-world `orphan/unorphan` scenarios effectively since it does not maintain any state about the node and the chain. A high-level fuzz target which construct well-designed transaction graphs will be added later.
ACKs for top commit:
MarcoFalke:
review ACK 6eb0909cb7🐈
Tree-SHA512: b4d64f5941df77d13981f75ec170cef6ffabe782797c982ede7f34134be01dc0026dd7c0bee614bc1d64715e90a933d2a8c95974d402e32eaba8e24cc928299e
e866f0d066 [functional test] submitrawpackage RPC (glozow)
fa076515b0 [rpc] add new submitpackage RPC (glozow)
Pull request description:
It would be nice for LN/wallet/app devs to test out package policy, package RBF, etc., but the only interface to do so right now is through unit tests. This PR adds a `-regtest` only RPC interface so people can test by submitting raw transaction data. It is regtest-only, as it would be unsafe/confusing to create an actual mainnet interface while package relay doesn't exist.
Note that the functional tests are there to ensure the RPC interface is working properly; they aren't for testing policy itself. See src/test/txpackage_tests.cpp.
ACKs for top commit:
t-bast:
Tested ACK against eclair e866f0d066
ariard:
Code Review ACK e866f0d0
instagibbs:
code review ACK e866f0d066
Tree-SHA512: 824a26b10d2240e0fd85e5dd25bf499ee3dd9ba8ef4f522533998fcf767ddded9f001f7a005fe3ab07ec95e696448484e26599803e6034ed2733125c8c376c84
d1684beabe fees: Pass in a filepath instead of referencing gArgs (Carl Dong)
9a3d825c30 init: Remove redundant -*mempool*, -limit* queries (Carl Dong)
6c5c60c412 mempool: Use m_limit for UpdateTransactionsFromBlock (Carl Dong)
9e93b10301 node/ifaces: Use existing MemPoolLimits (Carl Dong)
38af2bcf35 mempoolaccept: Use limits from mempool in constructor (Carl Dong)
9333427014 mempool: Introduce (still-unused) MemPoolLimits (Carl Dong)
716bb5fbd3 scripted-diff: Rename anc/desc size limit vars to indicate SI unit (Carl Dong)
1ecc77321d scripted-diff: Rename DEFAULT_MEMPOOL_EXPIRY to indicate time unit (Carl Dong)
aa9141cd81 mempool: Pass in -mempoolexpiry instead of referencing gArgs (Carl Dong)
51c7a41a5e init: Only determine maxmempool once (Carl Dong)
386c9472c8 mempool: Make GetMinFee() with custom size protected (Carl Dong)
82f00de7a6 mempool: Pass in -maxmempool instead of referencing gArgs (Carl Dong)
f1941e8bfd pool: Add and use MemPoolOptions, ApplyArgsManOptions (Carl Dong)
0199bd35bb fuzz/rbf: Add missing TestingSetup (Carl Dong)
ccbaf546a6 scripted-diff: Rename DEFAULT_MAX_MEMPOOL_SIZE to indicate SI unit (Carl Dong)
fc02f77ca6 ArgsMan: Add Get*Arg functions returning optional (Carl Dong)
Pull request description:
This is part of the `libbitcoinkernel` project: #24303, https://github.com/bitcoin/bitcoin/projects/18
-----
As mentioned in the Stage 1 Step 2 description of [the `libbitcoinkernel` project](https://github.com/bitcoin/bitcoin/issues/24303), `ArgsManager` will not be part of `libbitcoinkernel`. Therefore, it is important that we remove any dependence on `ArgsManager` by code that will be part of `libbitcoinkernel`. This is the first in a series of PRs aiming to achieve this.
This PR removes `CTxMemPool+MempoolAccept`'s dependency on `ArgsManager` by introducing a `CTxMemPool::Options` struct, which is used to specify `CTxMemPool`'s various options at construction time.
These options are:
- `-maxmempool` -> `CTxMemPool::Options::max_size`
- `-mempoolexpiry` -> `CTxMemPool::Options::expiry`
- `-limitancestorcount` -> `CTxMemPool::Options::limits::ancestor_count`
- `-limitancestorsize` -> `CTxMemPool::Options::limits::ancestor_size`
- `-limitdescendantcount` -> `CTxMemPool::Options::limits::descendant_count`
- `-limitdescendantsize` -> `CTxMemPool::Options::limits::descendant_size`
More context can be gleaned from the commit messages. The important commits are:
- 56eb479ded8bfb2ef635bb6f3b484f9d5952c70d "pool: Add and use MemPoolOptions, ApplyArgsManOptions"
- a1e08b70f3068f4e8def1c630d8f50cd54da7832 "mempool: Pass in -maxmempool instead of referencing gArgs"
- 6f4bf3ede5812b374828f08fc728ceded2f10024 "mempool: Pass in -mempoolexpiry instead of referencing gArgs"
- 5958a7fe4806599fc620ee8c1a881ca10fa2dd16 "mempool: Introduce (still-unused) MemPoolLimits"
Reviewers: Help needed in the following commits (see commit messages):
- a1e08b70f3068f4e8def1c630d8f50cd54da7832 "mempool: Pass in -maxmempool instead of referencing gArgs"
- 0695081a797e9a5d7787b78b0f8289dafcc6bff7 "node/ifaces: Use existing MemPoolLimits"
Note to Reviewers: There are perhaps an infinite number of ways to architect `CTxMemPool::Options`, the current one tries to keep it simple, usable, and flexible. I hope we don't spend too much time arguing over the design here since that's not the point. In the case that you're 100% certain that a different design is strictly better than this one in every regard, please show us a fully-implemented branch.
-----
TODO:
- [x] Use the more ergonomic `CTxMemPool::Options` where appropriate
- [x] Doxygen comments for `ApplyArgsManOptions`, `MemPoolOptions`
-----
Questions for Reviewers:
1. Should we use `std::chrono::seconds` for `CTxMemPool::Options::expiry` and `CTxMemPool::m_expiry` instead of an `int64_t`? Something else? (`std::chrono::hours`?)
2. Should I merge `CTxMemPool::Limits` inside `CTxMemPool::Options`?
ACKs for top commit:
MarcoFalke:
ACK d1684beabe🍜
ryanofsky:
Code review ACK d1684beabe. Just minor cleanups since last review, mostly switching to brace initialization
Tree-SHA512: 2c138e52d69f61c263f1c3648f01c801338a8f576762c815f478ef5148b8b2f51e91ded5c1be915e678c0b14f6cfba894b82afec58d999d39a7bb7c914736e0b
Reviewers: Note that CTxMemPool now requires a non-defaulted
CTxMemPool::Options for its constructor. Meaning that there's no need to
worry about a stray CTxMemPool constructor somewhere defaulting to
something incorrect. All instances of CTxMemPool construction are
addressed here in this commit.
We set options for CTxMemPool and construct it in many different ways. A
good example can be seen in how we determine CTxMemPool's check_ratio in
AppInitMain(...).
1. We first set the default based on chainparams's
DefaultConsistencyChecks()
2. Then, we apply the ArgsManager option on top of that default
3. Finally, we clamp the result of that between 0 and 1 Million
With this patch, most CTxMemPool construction are along the lines of:
MemPoolOptions mempool_opts{...default overrides...};
ApplyArgsManOptions(argsman, mempool_opts);
...hard overrides...
CTxMemPool pool{mempool_opts};
This "compositional" style of building options means that we can omit
unnecessary/irrelevant steps wherever we want but also maintain full
customizability.
For example:
- For users of libbitcoinkernel, where we eventually want to remove
ArgsManager, they simply won't call (or even know about)
ApplyArgsManOptions.
- See src/init.cpp to see how the check_ratio CTxMemPool option works
after this change.
A MemPoolOptionsForTest helper was also added and used by tests/fuzz
tests where a local CTxMemPool needed to be created.
The change in src/test/fuzz/tx_pool.cpp seemingly changes behaviour by
applying ArgsManager options on top of the CTxMemPool::Options defaults.
However, in future commits where we introduce flags like -maxmempool,
the call to ApplyArgsManOptions is actually what preserves the existing
behaviour. Previously, although it wasn't obvious, our CTxMemPool would
consult gArgs for flags like -maxmempool when it needed it, so it
already relied on ArgsManager information. This patchset just laid bare
the obfuscatory perils of globals.
[META] As this patchset progresses, we will move more and more
CTxMemPool-relevant options into MemPoolOptions and add their
ArgsMan-related logic to ApplyArgsManOptions.
b2733ab6a8 net: add new method Sock::Listen() that wraps listen() (Vasil Dimov)
3ad7de225e net: add new method Sock::Bind() that wraps bind() (Vasil Dimov)
Pull request description:
_This is a piece of #21878, chopped off to ease review._
Add new methods `Sock::Bind()` and `Sock::Listen()` that wrap `bind()` and `listen()`.
This will help to increase `Sock` usage and make more code mockable.
ACKs for top commit:
pk-b2:
ACK b2733ab6a8
laanwj:
Code review ACK b2733ab6a8
Tree-SHA512: c6e737606703e2106fe60cc000cfbbae3a7f43deadb25f70531e2cac0457e0b0581440279d14c76c492eb85c12af4adde52c30baf74542c41597e419817488e8
a8d6abba5e net: change GetBindAddress() to take Sock argument (Vasil Dimov)
748dbcd9f2 net: add new method Sock::GetSockName() that wraps getsockname() (Vasil Dimov)
Pull request description:
_This is a piece of #21878, chopped off to ease review._
Wrap the syscall `getsockname()` in `Sock::GetSockName()` and change `GetBindAddress()` to take a `Sock` argument so that it can use the wrapper.
This further encapsulates syscalls inside the `Sock` class and makes the callers mockable.
ACKs for top commit:
laanwj:
Code review ACK a8d6abba5e
Tree-SHA512: 3a73463258c0057487fb3fd67215816b03a1c5160f45e45930eaeef86bb3611ec385794cdb08339aa074feba8ad67cd2bfd3836f6cbd40834e15d933214a05dc
MarcoFalke mentioned that this is likely a bug since "any log messages
should be muted, not accumulated and turned into an OOM when fuzzing for
a long time".
