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Merge bitcoin/bitcoin#22868: wallet: Call load handlers without cs_wallet locked

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f13a22a631 wallet: Call load handlers without cs_wallet locked (João Barbosa)

Pull request description:

  Don't have `cs_wallet` locked while calling each `context.wallet_load_fns`. A load handler can always lock `cs_wallet` if needed.

  The lock was added in 1c7e25db0c to satisfy TSAN. With 44c430ffac most of the code requiring the lock is in `CWallet::AttachChain`. A comment is added to warn about wallets_mutex and cs_wallet lock ordering.

ACKs for top commit:
  meshcollider:
    re-utACK f13a22a631
  ryanofsky:
    Code review ACK f13a22a631. Only change since last review is adding a lock order comment
  jonatack:
    ACK f13a22a631

Tree-SHA512: d51976c3aae4bebc2d1997c88edff712d21fc5523801f5614062a10f826e164579973aeb1981bb1cbc243ecff6af3250362f544c02a79e5d135cbbca1704be62
This commit is contained in:
Samuel Dobson
2021-11-27 21:46:21 +13:00
parent 111c3e06b3 f13a22a631
commit 200d97faf2
3 changed files with 5 additions and 9 deletions
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6
src/wallet/test/wallet_tests.cpp
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@@ -779,18 +779,14 @@ BOOST_FIXTURE_TEST_CASE(CreateWallet, TestChain100Setup)
// deadlock during the sync and simulates a new block notification happening
// as soon as possible.
addtx_count = 0;
auto handler = HandleLoadWallet(context, [&](std::unique_ptr<interfaces::Wallet> wallet) EXCLUSIVE_LOCKS_REQUIRED(wallet->wallet()->cs_wallet, context.wallets_mutex) {
auto handler = HandleLoadWallet(context, [&](std::unique_ptr<interfaces::Wallet> wallet) {
BOOST_CHECK(rescan_completed);
m_coinbase_txns.push_back(CreateAndProcessBlock({}, GetScriptForRawPubKey(coinbaseKey.GetPubKey())).vtx[0]);
block_tx = TestSimpleSpend(*m_coinbase_txns[2], 0, coinbaseKey, GetScriptForRawPubKey(key.GetPubKey()));
m_coinbase_txns.push_back(CreateAndProcessBlock({block_tx}, GetScriptForRawPubKey(coinbaseKey.GetPubKey())).vtx[0]);
mempool_tx = TestSimpleSpend(*m_coinbase_txns[3], 0, coinbaseKey, GetScriptForRawPubKey(key.GetPubKey()));
BOOST_CHECK(m_node.chain->broadcastTransaction(MakeTransactionRef(mempool_tx), DEFAULT_TRANSACTION_MAXFEE, false, error));
LEAVE_CRITICAL_SECTION(context.wallets_mutex);
LEAVE_CRITICAL_SECTION(wallet->wallet()->cs_wallet);
SyncWithValidationInterfaceQueue();
ENTER_CRITICAL_SECTION(wallet->wallet()->cs_wallet);
ENTER_CRITICAL_SECTION(context.wallets_mutex);
});
wallet = TestLoadWallet(context);
BOOST_CHECK_EQUAL(addtx_count, 4);