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Merge #15976: refactor: move methods under CChainState (pt. 1)

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403e677c9 refactoring: IsInitialBlockDownload -> CChainState (James O'Beirne)
3ccbc376d refactoring: FlushStateToDisk -> CChainState (James O'Beirne)
4d6688603 refactoring: introduce ChainstateActive() (James O'Beirne)
d7c97edee move-only: make the CChainState interface public (James O'Beirne)

Pull request description:

  This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11):

  Parent PR: #15606
  Issue: #15605
  Specification: https://github.com/jamesob/assumeutxo-docs/tree/2019-04-proposal/proposal

  ---

  This changeset starts moving functionality intimately related to CChainState into methods. Parameterizing these functions by a particular CChainState is necessary for the use of multiple chainstates simultaneously (e.g. for asynchronous background validation).

  In this change, we
  - make the CChainState interface public - since other units will start to invoke its methods directly,
  - introduce `::ChainstateActive()`, the CChainState equivalent for `::ChainActive()`,
  - and move `IsInitialBlockDownload()` and `FlushStateToDisk()` into methods on CChainState.

  Independent of assumeutxo, these changes better encapsulate chainstate behavior and allow easier use from a testing context.

  There are more methods that we'll move in the future, but they require other substantial changes (i.e. moving ownership of the `CCoinsView*` hierarchy into CChainState) so we'll save them for future PRs.

  ---

  The first move-only commit is most easily reviewed with `git diff ... --color-moved=dimmed_zebra`.

ACKs for commit 403e67:
  Empact:
    utACK 403e677c9e no need to address my nits herein
  Sjors:
    utACK 403e677
  ryanofsky:
    utACK 403e677c9e. Only change since previous review is removing global state comment as suggested.
  MarcoFalke:
    utACK 403e677c9e, though the diff still seems a bit bloated with some unnecessary changes in the second commit.
  promag:
    utACK 403e677 and rebased with current [master](c7cfd20a7).

Tree-SHA512: 6fcf260bb2dc201361170c0b4547405366f5f331fcc3a2bac29b24442814b7b244ca1b58aac5af716885f9a130c343b544590dff780da0bf835c7c5b3ccb2257
This commit is contained in:
Wladimir J. van der Laan
2019-06-05 11:41:42 +02:00
parent 51858c57f0 403e677c9e
commit 5d37c1bde0
8 changed files with 273 additions and 239 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/net_processing.cpp
View File

@@ -1240,7 +1240,7 @@ void PeerLogicValidation::BlockChecked(const CBlock& block, const CValidationSta
// the tip yet so we have no way to check this directly here. Instead we
// just check that there are currently no other blocks in flight.
else if (state.IsValid() &&
!IsInitialBlockDownload() &&
!::ChainstateActive().IsInitialBlockDownload() &&
mapBlocksInFlight.count(hash) == mapBlocksInFlight.size()) {
if (it != mapBlockSource.end()) {
MaybeSetPeerAsAnnouncingHeaderAndIDs(it->second.first, connman);
@@ -1728,7 +1728,7 @@ bool static ProcessHeadersMessage(CNode *pfrom, CConnman *connman, const std::ve
}
// If we're in IBD, we want outbound peers that will serve us a useful
// chain. Disconnect peers that are on chains with insufficient work.
if (IsInitialBlockDownload() && nCount != MAX_HEADERS_RESULTS) {
if (::ChainstateActive().IsInitialBlockDownload() && nCount != MAX_HEADERS_RESULTS) {
// When nCount < MAX_HEADERS_RESULTS, we know we have no more
// headers to fetch from this peer.
if (nodestate->pindexBestKnownBlock && nodestate->pindexBestKnownBlock->nChainWork < nMinimumChainWork) {
@@ -1994,7 +1994,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
if (!pfrom->fInbound)
{
// Advertise our address
if (fListen && !IsInitialBlockDownload())
if (fListen && !::ChainstateActive().IsInitialBlockDownload())
{
CAddress addr = GetLocalAddress(&pfrom->addr, pfrom->GetLocalServices());
FastRandomContext insecure_rand;
@@ -2229,7 +2229,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
pfrom->AddInventoryKnown(inv);
if (fBlocksOnly) {
LogPrint(BCLog::NET, "transaction (%s) inv sent in violation of protocol peer=%d\n", inv.hash.ToString(), pfrom->GetId());
} else if (!fAlreadyHave && !fImporting && !fReindex && !IsInitialBlockDownload()) {
} else if (!fAlreadyHave && !fImporting && !fReindex && !::ChainstateActive().IsInitialBlockDownload()) {
RequestTx(State(pfrom->GetId()), inv.hash, nNow);
}
}
@@ -2387,7 +2387,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
}
LOCK(cs_main);
if (IsInitialBlockDownload() && !pfrom->fWhitelisted) {
if (::ChainstateActive().IsInitialBlockDownload() && !pfrom->fWhitelisted) {
LogPrint(BCLog::NET, "Ignoring getheaders from peer=%d because node is in initial block download\n", pfrom->GetId());
return true;
}
@@ -2609,7 +2609,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
if (!LookupBlockIndex(cmpctblock.header.hashPrevBlock)) {
// Doesn't connect (or is genesis), instead of DoSing in AcceptBlockHeader, request deeper headers
if (!IsInitialBlockDownload())
if (!::ChainstateActive().IsInitialBlockDownload())
connman->PushMessage(pfrom, msgMaker.Make(NetMsgType::GETHEADERS, ::ChainActive().GetLocator(pindexBestHeader), uint256()));
return true;
}
@@ -3524,7 +3524,7 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
// Address refresh broadcast
int64_t nNow = GetTimeMicros();
if (!IsInitialBlockDownload() && pto->nNextLocalAddrSend < nNow) {
if (!::ChainstateActive().IsInitialBlockDownload() && pto->nNextLocalAddrSend < nNow) {
AdvertiseLocal(pto);
pto->nNextLocalAddrSend = PoissonNextSend(nNow, AVG_LOCAL_ADDRESS_BROADCAST_INTERVAL);
}
@@ -3925,7 +3925,7 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
// Message: getdata (blocks)
//
std::vector<CInv> vGetData;
if (!pto->fClient && ((fFetch && !pto->m_limited_node) || !IsInitialBlockDownload()) && state.nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
if (!pto->fClient && ((fFetch && !pto->m_limited_node) || !::ChainstateActive().IsInitialBlockDownload()) && state.nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
std::vector<const CBlockIndex*> vToDownload;
NodeId staller = -1;
FindNextBlocksToDownload(pto->GetId(), MAX_BLOCKS_IN_TRANSIT_PER_PEER - state.nBlocksInFlight, vToDownload, staller, consensusParams);