asp: the point of this PR was to completely decouple libbitcoin_server from
bitcoin_tool; it removes $(LIBBITCOIN_SERVER) from the `elements_wallet_LDADD`.
I put this back in because our additional code related to pegin claiming makes
heavy use of methods from libbitcoin_server.
If we want to morally accept this PR then we need to do a nontrivial refactoring.
41b0baf43c gui: Handle WalletModel::unload asynchronous (João Barbosa)
ab31b9d6fe Fix wallet unload race condition (Russell Yanofsky)
Pull request description:
This PR consists in two fixes. The first fixes a concurrency issues with `boost::signals2`. The second fixes a wallet model destruction while it's being used.
From boost signal documentation at https://www.boost.org/doc/libs/1_72_0/doc/html/signals2/thread-safety.html:
> When a signal is invoked by calling signal::operator(), the invocation first acquires a lock on the signal's mutex. Then it obtains a handle to the signal's slot list and combiner. Next it releases the signal's mutex, before invoking the combiner to iterate through the slot list.
This means that `UnregisterValidationInterface` doesn't prevent more calls to that interface. The fix consists in capturing the `shared_ptr<CValidationInterface>` in each internal slot.
The GUI bug is fixed by using a `Qt::QueuedConnection` in the `WalletModel::unload` connection.
ACKs for top commit:
ryanofsky:
Code review ACK 41b0baf43c. Only change is moving assert as suggested
hebasto:
ACK 41b0baf43c, tested on Linux Mint 19.3.
Tree-SHA512: 4f712d8de65bc1214411831250de5dc0a9fd505fb84da5baf9f2cc4d551bc3abffc061616f00afe43dba7525af2cd96c9b54aeead9383145e3b8801f25d85f50
ff9c671b11 refactor: Work around GCC 9 `-Wredundant-move` warning (Russell Yanofsky)
b837b334db net: Fail instead of truncate command name in CMessageHeader (Wladimir J. van der Laan)
Pull request description:
Fixes all 3 from #16992 (see commits)
- net: Fail instead of truncate command name in CMessageHeader
- refactor: Use std::move workaround for unique_ptr upcast only when necessary
ACKs for top commit:
practicalswift:
ACK ff9c671b11 -- patch looks correct
sipa:
utACK ff9c671b11
ryanofsky:
Code review ACK ff9c671b11. Looks good and seems to pass travis, modulo a timeout on one build
hebasto:
ACK ff9c671b11, tested on Fedora 31:
Tree-SHA512: 52d8c13aaf0d56f9bc546a98d7f853eae21f7e325b202fdeb2286b19a9a0ee308634c644b039f60ad8043421e382381cbf1bce58d9f807547f928621c7d245d0
Currently it's possible for ReleaseWallet to delete the CWallet pointer while
it is processing BlockConnected, etc chain notifications.
To fix this, unregister from notifications earlier in UnloadWallet instead of
ReleaseWallet, and use a new RegisterSharedValidationInterface function to
prevent the CValidationInterface shared_ptr from being deleted until the last
notification is actually finished.
-BEGIN VERIFY SCRIPT-
# Delete outdated alias for RecursiveMutex
sed -i -e '/CCriticalSection/d' ./src/sync.h
# Replace use of outdated alias with RecursiveMutex
sed -i -e 's/CCriticalSection/RecursiveMutex/g' $(git grep -l CCriticalSection)
-END VERIFY SCRIPT-
6d6a7a8403 gui: Fix duplicate wallet showing up (João Barbosa)
81ea66c30e Drop signal CClientUIInterface::LoadWallet (Russell Yanofsky)
Pull request description:
This PR includes 2 fixes:
- prevent GUI LoadWallet handlers from crashing on startup when multiple handlers are attached, because the first handler takes ownership of the wallet unique pointer. Now every handler will receive its own unique pointer;
- prevent showing a wallet twice in the GUI on startup due to a race with `loadwallet`.
Fixes#16937
ACKs for top commit:
fjahr:
code review ACK 6d6a7a8403
ryanofsky:
Code review ACK 6d6a7a8403. No changes since last ACK other than rebase due to #17070
kallewoof:
Code review ACK 6d6a7a8403
Tree-SHA512: 7f0658c9011f81dfa176a094c2263448ee1d14fda7dc94e8b55ee9c8b81538bd2d1e4bf8a8dbfcd029ebfc9feb6d3cda9dee3f911122df0a4b1e0ca75f653ba4
is exact match
In the next commit, we start using BlockConnected/BlockDisconnected
callbacks to establish tx depth, rather than querying the chain
directly.
Currently, BlockUntilSyncedToCurrentChain will return early if
the best block processed by the wallet is a descendant of the node'tip.
That means that in the case of a re-org, it won't wait for the
BlockDisconnected callbacks that have been enqueued during the re-org
but have not yet been triggered in the wallet.
Change BlockUntilSyncedToCurrentChain to only return early if the
wallet's m_last_block_processed matches the tip exactly. This ensures
that there are no BlockDisconnected or BlockConnected callbacks
in-flight.
To do so we update CValidationInterface::BlockDisconnect to take a
CBlockIndex pointing to the block being disconnected.
This new parameter will be use in the following commit to establish
wallet height.
The wallet should not be able to directly access global configuration
from the node. Remove access of "-limitancestorcount" and
"-limitdescendantcount".
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.
