6a72f26968
This change is intended to make the bitcoin node and its rpc, network and gui interfaces more responsive while the wallet is in use. Currently because the node's cs_main mutex is always locked before the wallet's cs_wallet mutex (to prevent deadlocks), cs_main currently stays locked while the wallet does relatively slow things like creating and listing transactions. This commit only remmove chain lock tacking in wallet code, and invert lock order from cs_main, cs_wallet to cs_wallet, cs_main. must happen at once to avoid any deadlock. Previous commit were only removing Chain::Lock methods to Chain interface and enforcing they take cs_main. Remove LockChain method from CWallet and Chain::Lock interface.
Internal c++ interfaces
The following interfaces are defined here:
-
Chain— used by wallet to access blockchain and mempool state. Added in #14437, #14711, #15288, and #10973. -
ChainClient— used by node to start & stopChainclients. Added in #14437. -
Node— used by GUI to start & stop bitcoin node. Added in #10244. -
Handler— returned byhandleEventmethods on interfaces above and used to manage lifetimes of event handlers. -
Init— used by multiprocess code to access interfaces above on startup. Added in #10102.
The interfaces above define boundaries between major components of bitcoin code (node, wallet, and gui), making it possible for them to run in different processes, and be tested, developed, and understood independently. These interfaces are not currently designed to be stable or to be used externally.