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Merge #15842: refactor: replace isPotentialtip/waitForNotifications by higher method

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422677963a refactor: replace isPotentialtip/waitForNotifications by higher method (Antoine Riard)
edfe9438ca Add WITH_LOCK macro: run code while locking a mutex (Antoine Riard)

Pull request description:

  In Chain interface, instead of a isPotentialTip and a WaitForNotifications method, both used only once in CWallet::BlockUntilSyncedToCurrentChain, combine them in a higher WaitForNotificationsUpToTip method. Semantic should be unchanged, wallet wait for pending notifications to be processed unless block hash points to the current chain tip or a descendant.

ACKs for commit 422677:
  jnewbery:
    ACK 422677963a
  ryanofsky:
    utACK 422677963a. Only change is adding the cs_wallet lock annotation.

Tree-SHA512: 2834ff0218795ef607543fae822e5cce25d759c1a9cfcb1f896a4af03071faed5276fbe0966e0c6ed65dc0e88af161899c5b2ca358a2d24fe70969a550000bf2
This commit is contained in:
MarcoFalke
2019-05-01 14:59:55 -04:00
parent 12aa2ac988 422677963a
commit 0936f35f65
5 changed files with 29 additions and 37 deletions
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17
src/interfaces/chain.cpp
View File

@@ -122,12 +122,6 @@ class LockImpl : public Chain::Lock
}
return nullopt;
}
bool isPotentialTip(const uint256& hash) override
{
if (::chainActive.Tip()->GetBlockHash() == hash) return true;
CBlockIndex* block = LookupBlockIndex(hash);
return block && block->GetAncestor(::chainActive.Height()) == ::chainActive.Tip();
}
CBlockLocator getTipLocator() override { return ::chainActive.GetLocator(); }
Optional<int> findLocatorFork(const CBlockLocator& locator) override
{
@@ -343,7 +337,16 @@ public:
{
return MakeUnique<NotificationsHandlerImpl>(*this, notifications);
}
void waitForNotifications() override { SyncWithValidationInterfaceQueue(); }
void waitForNotificationsIfNewBlocksConnected(const uint256& old_tip) override
{
if (!old_tip.IsNull()) {
LOCK(::cs_main);
if (old_tip == ::chainActive.Tip()->GetBlockHash()) return;
CBlockIndex* block = LookupBlockIndex(old_tip);
if (block && block->GetAncestor(::chainActive.Height()) == ::chainActive.Tip()) return;
}
SyncWithValidationInterfaceQueue();
}
std::unique_ptr<Handler> handleRpc(const CRPCCommand& command) override
{
return MakeUnique<RpcHandlerImpl>(command);

17
src/interfaces/chain.h
View File

@@ -43,12 +43,6 @@ class Wallet;
//! asynchronously
//! (https://github.com/bitcoin/bitcoin/pull/10973#issuecomment-380101269).
//!
//! * The isPotentialTip() and waitForNotifications() methods are too low-level
//! and should be replaced with a higher level
//! waitForNotificationsUpTo(block_hash) method that the wallet can call
//! instead
//! (https://github.com/bitcoin/bitcoin/pull/10973#discussion_r266995234).
//!
//! * The relayTransactions() and submitToMemoryPool() methods could be replaced
//! with a higher-level broadcastTransaction method
//! (https://github.com/bitcoin/bitcoin/pull/14978#issuecomment-459373984).
@@ -123,11 +117,6 @@ public:
//! information is desired).
virtual Optional<int> findFork(const uint256& hash, Optional<int>* height) = 0;
//! Return true if block hash points to the current chain tip, or to a
//! possible descendant of the current chain tip that isn't currently
//! connected.
virtual bool isPotentialTip(const uint256& hash) = 0;
//! Get locator for the current chain tip.
virtual CBlockLocator getTipLocator() = 0;
@@ -256,8 +245,10 @@ public:
//! Register handler for notifications.
virtual std::unique_ptr<Handler> handleNotifications(Notifications& notifications) = 0;
//! Wait for pending notifications to be handled.
virtual void waitForNotifications() = 0;
//! Wait for pending notifications to be processed unless block hash points to the current
//! chain tip, or to a possible descendant of the current chain tip that isn't currently
//! connected.
virtual void waitForNotificationsIfNewBlocksConnected(const uint256& old_tip) = 0;
//! Register handler for RPC. Command is not copied, so reference
//! needs to remain valid until Handler is disconnected.