init: allow shutdown during 'Activating best chain...'

Two-line patch to make it possible to shut down bitcoind cleanly during
the initial ActivateBestChain.

Fixes #6459 (among other complaints).

To reproduce:

- shutdown bitcoind
- copy chainstate
- start bitcoind
- let the chain sync a bit
- shutdown bitcoind
- copy back old chainstate
- start bitcoind
- bitcoind will catch up with all blocks during Init()

(the `boost::this_thread::interruption_point` / `ShutdownRequested()`
dance is ugly, this should be refactored all over bitcoind at some point
when moving from boost::threads to c++11 threads, but it works...)
This commit is contained in:
Wladimir J. van der Laan 2016-04-06 10:27:51 +02:00
parent 1b2460bd58
commit 07398e8e9d

View file

@ -2877,6 +2877,8 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
CBlockIndex *pindexMostWork = NULL;
do {
boost::this_thread::interruption_point();
if (ShutdownRequested())
break;
CBlockIndex *pindexNewTip = NULL;
const CBlockIndex *pindexFork;