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rpc: use waitTipChanged for longpoll

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This removes the last remaining use of g_best_block by the RPC.
This commit is contained in:
Ryan Ofsky 2024-08-26 18:35:16 +02:00 • committed by Sjors Provoost
parent 460687a09c
commit e3a560ca68
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GPG key ID: 57FF9BDBCC301009
1 changed files with 8 additions and 14 deletions
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22
src/rpc/mining.cpp
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@ -738,7 +738,6 @@ static RPCHelpMan getblocktemplate()
{
// Wait to respond until either the best block changes, OR a minute has passed and there are more transactions
uint256 hashWatchedChain;
std::chrono::steady_clock::time_point checktxtime;
unsigned int nTransactionsUpdatedLastLP;
if (lpval.isStr())
@ -759,19 +758,14 @@ static RPCHelpMan getblocktemplate()
// Release lock while waiting
LEAVE_CRITICAL_SECTION(cs_main);
{
checktxtime = std::chrono::steady_clock::now() + std::chrono::minutes(1);
WAIT_LOCK(g_best_block_mutex, lock);
while (g_best_block == hashWatchedChain && IsRPCRunning())
{
if (g_best_block_cv.wait_until(lock, checktxtime) == std::cv_status::timeout)
{
// Timeout: Check transactions for update
// without holding the mempool lock to avoid deadlocks
if (miner.getTransactionsUpdated() != nTransactionsUpdatedLastLP)
break;
checktxtime += std::chrono::seconds(10);
}
MillisecondsDouble checktxtime{std::chrono::minutes(1)};
while (tip == hashWatchedChain && IsRPCRunning()) {
tip = miner.waitTipChanged(hashWatchedChain, checktxtime).hash;
// Timeout: Check transactions for update
// without holding the mempool lock to avoid deadlocks
if (miner.getTransactionsUpdated() != nTransactionsUpdatedLastLP)
break;
checktxtime = std::chrono::seconds(10);
}
}
ENTER_CRITICAL_SECTION(cs_main);