Replace the 200ms polling loop with a faster and more efficient waiting
operation.
This was tried a few times before, but given up every time because
solutions use a condition variable which is not safe for use in signals
as they need to be reentrant.
On UNIX-ish OSes, use a safe way: a pipe. When shutdown is requested
write a dummy byte to the pipe. Waiting for shutdown is a matter of a
blocking read from the pipe.
On Windows, there are no signals so using a condition variable is safe.
It's not actually possible to change this value, so remove the
indirection of it being a conn option.
DEFAULT_MAX_UPLOAD_TIMEFRAME is a compile time constant.
4e28753f60 feestimator: encapsulate estimation file logic (Antoine Poinsot)
e8ea6ad9c1 init: don't create a CBlockPolicyEstimator if we don't relay transactions (Antoine Poinsot)
86ff2cf202 Remove the remaining fee estimation globals (Antoine Poinsot)
03bfeee957 interface: remove unused estimateSmartFee method from node (Antoine Poinsot)
Pull request description:
If the `blocksonly` mode is turned on after running with transaction
relay enabled for a while, the fee estimation will serve outdated data
to both the internal wallet and to external applications that might be
feerate-sensitive and make use of `estimatesmartfee` (for example a
Lightning Network node).
This has already caused issues (for example https://github.com/bitcoin/bitcoin/issues/16840 (C-lightning), or https://github.com/lightningnetwork/lnd/issues/2562 (LND)) and it seems prudent to fail rather than to give inaccurate values.
This fixes#16840, and closes#16890 which tried to fix the symptoms (RPC) but not the cause as mentioned by sdaftuar :
> If this is a substantial problem, then I would think we should take action to protect our own wallet users as well (rather than hide the results of what our fee estimation would do!).
ACKs for top commit:
MarcoFalke:
re-ACK 4e28753f60👋
jnewbery:
utACK 4e28753f60
Tree-SHA512: c869cf03b86d8194002970bbc84662dae76874967949b9be0d9a4511a1eabcb1627c38aca3154da9dcece1a4c49ec02bd4f9fcca2ec310986e07904559e63ba8
This moves the fee_estimates file management to the CBlockPolicyEstimator
Flush() method.
Co-authored-by: John Newbery <john@johnnewbery.com>
Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
This moves the CBlockPolicyEstimator to the NodeContext, which get rids
of two globals and allows us to conditionally create the
CBlockPolicyEstimator (and to remove a circular dep).
Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
f15e780b9e refactor: Clean up CTxMemPool initializer list (Elle Mouton)
e3310692d0 refactor: Make CTxMemPool::m_check_ratio a const and a constructor argument (Elle Mouton)
9d4b4b2c2c refactor: Avoid double to int cast for nCheckFrequency (Elle Mouton)
Pull request description:
This PR cleans up the CTxMemPool interface by including the ratio used to determine when a mempool sanity check should run in the constructor of CTxMempool instead of using nCheckFrequency which required a cast from a double to a uint32_t. Since nCheckFrequency (now called m_check_ratio) is set in the constructor and only every read from there after, it can be turned into a const and no longer needs to be guarded by the 'cs' lock.
Since nCheckFrequency/m_check_ratio no longer needs to lock the 'cs' mutux, mutex lock line in the "CTxMempool::check" function can be moved below where the m_check_ratio variable is checked. Since the variable is 0 by default (meaning that "CTxMempool::check" will most likely not run its logic) this saves us from unnecessarily grabbing the lock.
ACKs for top commit:
jnewbery:
utACK f15e780b9e
MarcoFalke:
ACK f15e780b9e👘
glozow:
utACK https://github.com/bitcoin/bitcoin/pull/20222/commits/f15e780b9e57554c723bc02aa41150ecf3e3a8c9
theStack:
Code Review ACK f15e780b9e
Tree-SHA512: d83f3b5311ca128847b621e5e999c7e1bf0f4e6261d4cc090fb13e229a0f7eecd66ad997f654f50a838baf708d1515740aa3bffc244909a001d01fd5ae398b68
I had to make up an onion service target port for Liquid and for our custom
params, so I chose 37041 and 37040 to roughly match how signet just adds
30000 to its normal port.
This caused a segfault because we have no checkpoints. Added a NULL check
which jnewbery suggested on the original PR, but for some reason didn't
get in.
Added a method testPeginClaimAcceptance to interfaces::CChain. It is not clear
to me that this is meaningfully different from the existing method broadcastTransaction
(with the `relay` flag set to false so it doesn't actually broadcast), except
that this method returns the TxValidationState, which we display to the user
in the RPC error. Worth revisiting this.
Another nonobvious change was replacing a block of mempool-searching logic
in wallet/rpcwallet.cpp with the single line `pwallet->chain().findCoins(coins)`.
This I stole from the current state of upstream #17211, our favorite in-progress
PR from which the original logic came.
