c065bcd2d7
Signal m_tip_block_cv when Ctrl-C is pressed or SIGTERM is received, the same way it is currently signalled when the `stop` RPC is called. This lets RPC calls like `waitforblockheight` and IPC calls like `waitTipChanged` be interrupted, instead of waiting for their original timeouts and delaying shutdown. Historical notes: - The behavior where `stop` RPC signals `m_tip_block_cv`, but CTRL-C does not, has been around since the condition variable was introduced in #30409 (7eccdaf160). - The signaling was later moved without changing behavior in #30967 (5ca28ef28b). This commit moves it again to the Interrupt() function, which is probably the place it should have been added initially, so it works for Ctrl-C shutdowns as well as `stop` shutdowns. - A Qt shutdown bug calling wait methods was fixed previously in #18452 (da73f1513a), and this change updates that fix to avoid the hang happening again in Qt. Github-Pull: #33511 Rebased-From:c25a5e670b
src/node/
The src/node/ directory contains code that needs to access node state
(state in CChain, CBlockIndex, CCoinsView, CTxMemPool, and similar
classes).
Code in src/node/ is meant to be segregated from code in
src/wallet/ and src/qt/, to ensure wallet and GUI
code changes don't interfere with node operation, to allow wallet and GUI code
to run in separate processes, and to perhaps eventually allow wallet and GUI
code to be maintained in separate source repositories.
As a rule of thumb, code in one of the src/node/,
src/wallet/, or src/qt/ directories should avoid
calling code in the other directories directly, and only invoke it indirectly
through the more limited src/interfaces/ classes.
This directory is at the moment
sparsely populated. Eventually more substantial files like
src/validation.cpp and
src/txmempool.cpp might be moved there.