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node/chainstate: Remove do/while loop
I strongly recommend reviewing with the following git-diff flags: --ignore-space-change
This commit is contained in:
Carl Dong
parent
975235ca0a
commit
adf4912d77
1 changed files with 118 additions and 119 deletions
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@ -28,139 +28,138 @@ std::optional<ChainstateLoadingError> LoadChainstate(bool fReset,
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return fReset || fReindexChainState || chainstate->CoinsTip().GetBestBlock().IsNull();
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};
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do {
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try {
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LOCK(cs_main);
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chainman.InitializeChainstate(mempool);
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chainman.m_total_coinstip_cache = nCoinCacheUsage;
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chainman.m_total_coinsdb_cache = nCoinDBCache;
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try {
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LOCK(cs_main);
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chainman.InitializeChainstate(mempool);
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chainman.m_total_coinstip_cache = nCoinCacheUsage;
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chainman.m_total_coinsdb_cache = nCoinDBCache;
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UnloadBlockIndex(mempool, chainman);
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UnloadBlockIndex(mempool, chainman);
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auto& pblocktree{chainman.m_blockman.m_block_tree_db};
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// new CBlockTreeDB tries to delete the existing file, which
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// fails if it's still open from the previous loop. Close it first:
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pblocktree.reset();
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pblocktree.reset(new CBlockTreeDB(nBlockTreeDBCache, false, fReset));
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auto& pblocktree{chainman.m_blockman.m_block_tree_db};
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// new CBlockTreeDB tries to delete the existing file, which
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// fails if it's still open from the previous loop. Close it first:
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pblocktree.reset();
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pblocktree.reset(new CBlockTreeDB(nBlockTreeDBCache, false, fReset));
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if (fReset) {
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pblocktree->WriteReindexing(true);
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//If we're reindexing in prune mode, wipe away unusable block files and all undo data files
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if (fPruneMode)
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CleanupBlockRevFiles();
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}
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if (fReset) {
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pblocktree->WriteReindexing(true);
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//If we're reindexing in prune mode, wipe away unusable block files and all undo data files
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if (fPruneMode)
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CleanupBlockRevFiles();
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}
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if (ShutdownRequested()) return ChainstateLoadingError::SHUTDOWN_PROBED;
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// LoadBlockIndex will load fHavePruned if we've ever removed a
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// block file from disk.
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// Note that it also sets fReindex based on the disk flag!
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// From here on out fReindex and fReset mean something different!
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if (!chainman.LoadBlockIndex()) {
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if (ShutdownRequested()) return ChainstateLoadingError::SHUTDOWN_PROBED;
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// LoadBlockIndex will load fHavePruned if we've ever removed a
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// block file from disk.
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// Note that it also sets fReindex based on the disk flag!
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// From here on out fReindex and fReset mean something different!
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if (!chainman.LoadBlockIndex()) {
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if (ShutdownRequested()) return ChainstateLoadingError::SHUTDOWN_PROBED;
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return ChainstateLoadingError::ERROR_LOADING_BLOCK_DB;
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}
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if (!chainman.BlockIndex().empty() &&
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!chainman.m_blockman.LookupBlockIndex(chainparams.GetConsensus().hashGenesisBlock)) {
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return ChainstateLoadingError::ERROR_BAD_GENESIS_BLOCK;
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}
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// Check for changed -prune state. What we are concerned about is a user who has pruned blocks
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// in the past, but is now trying to run unpruned.
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if (fHavePruned && !fPruneMode) {
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return ChainstateLoadingError::ERROR_PRUNED_NEEDS_REINDEX;
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}
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// At this point blocktree args are consistent with what's on disk.
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// If we're not mid-reindex (based on disk + args), add a genesis block on disk
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// (otherwise we use the one already on disk).
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// This is called again in ThreadImport after the reindex completes.
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if (!fReindex && !chainman.ActiveChainstate().LoadGenesisBlock()) {
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return ChainstateLoadingError::ERROR_LOAD_GENESIS_BLOCK_FAILED;
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}
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// At this point we're either in reindex or we've loaded a useful
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// block tree into BlockIndex()!
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for (CChainState* chainstate : chainman.GetAll()) {
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chainstate->InitCoinsDB(
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/* cache_size_bytes */ nCoinDBCache,
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/* in_memory */ false,
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/* should_wipe */ fReset || fReindexChainState);
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chainstate->CoinsErrorCatcher().AddReadErrCallback([]() {
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uiInterface.ThreadSafeMessageBox(
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_("Error reading from database, shutting down."),
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"", CClientUIInterface::MSG_ERROR);
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});
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// If necessary, upgrade from older database format.
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// This is a no-op if we cleared the coinsviewdb with -reindex or -reindex-chainstate
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if (!chainstate->CoinsDB().Upgrade()) {
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return ChainstateLoadingError::ERROR_CHAINSTATE_UPGRADE_FAILED;
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}
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// ReplayBlocks is a no-op if we cleared the coinsviewdb with -reindex or -reindex-chainstate
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if (!chainstate->ReplayBlocks()) {
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return ChainstateLoadingError::ERROR_REPLAYBLOCKS_FAILED;
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}
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// The on-disk coinsdb is now in a good state, create the cache
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chainstate->InitCoinsCache(nCoinCacheUsage);
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assert(chainstate->CanFlushToDisk());
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if (!is_coinsview_empty(chainstate)) {
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// LoadChainTip initializes the chain based on CoinsTip()'s best block
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if (!chainstate->LoadChainTip()) {
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return ChainstateLoadingError::ERROR_LOADCHAINTIP_FAILED;
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}
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assert(chainstate->m_chain.Tip() != nullptr);
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}
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}
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} catch (const std::exception& e) {
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LogPrintf("%s\n", e.what());
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return ChainstateLoadingError::ERROR_GENERIC_BLOCKDB_OPEN_FAILED;
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return ChainstateLoadingError::ERROR_LOADING_BLOCK_DB;
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}
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if (!fReset) {
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LOCK(cs_main);
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auto chainstates{chainman.GetAll()};
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if (std::any_of(chainstates.begin(), chainstates.end(),
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[](const CChainState* cs) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { return cs->NeedsRedownload(); })) {
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return ChainstateLoadingError::ERROR_BLOCKS_WITNESS_INSUFFICIENTLY_VALIDATED;
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}
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if (!chainman.BlockIndex().empty() &&
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!chainman.m_blockman.LookupBlockIndex(chainparams.GetConsensus().hashGenesisBlock)) {
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return ChainstateLoadingError::ERROR_BAD_GENESIS_BLOCK;
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}
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try {
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LOCK(cs_main);
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// Check for changed -prune state. What we are concerned about is a user who has pruned blocks
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// in the past, but is now trying to run unpruned.
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if (fHavePruned && !fPruneMode) {
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return ChainstateLoadingError::ERROR_PRUNED_NEEDS_REINDEX;
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}
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for (CChainState* chainstate : chainman.GetAll()) {
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if (!is_coinsview_empty(chainstate)) {
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uiInterface.InitMessage(_("Verifying blocks…").translated);
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if (fHavePruned && check_blocks > MIN_BLOCKS_TO_KEEP) {
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LogPrintf("Prune: pruned datadir may not have more than %d blocks; only checking available blocks\n",
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MIN_BLOCKS_TO_KEEP);
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}
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// At this point blocktree args are consistent with what's on disk.
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// If we're not mid-reindex (based on disk + args), add a genesis block on disk
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// (otherwise we use the one already on disk).
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// This is called again in ThreadImport after the reindex completes.
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if (!fReindex && !chainman.ActiveChainstate().LoadGenesisBlock()) {
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return ChainstateLoadingError::ERROR_LOAD_GENESIS_BLOCK_FAILED;
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}
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const CBlockIndex* tip = chainstate->m_chain.Tip();
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RPCNotifyBlockChange(tip);
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if (tip && tip->nTime > GetTime() + MAX_FUTURE_BLOCK_TIME) {
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return ChainstateLoadingError::ERROR_BLOCK_FROM_FUTURE;
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}
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// At this point we're either in reindex or we've loaded a useful
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// block tree into BlockIndex()!
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if (!CVerifyDB().VerifyDB(
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*chainstate, chainparams, chainstate->CoinsDB(),
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check_level,
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check_blocks)) {
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return ChainstateLoadingError::ERROR_CORRUPTED_BLOCK_DB;
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}
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for (CChainState* chainstate : chainman.GetAll()) {
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chainstate->InitCoinsDB(
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/* cache_size_bytes */ nCoinDBCache,
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/* in_memory */ false,
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/* should_wipe */ fReset || fReindexChainState);
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chainstate->CoinsErrorCatcher().AddReadErrCallback([]() {
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uiInterface.ThreadSafeMessageBox(
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_("Error reading from database, shutting down."),
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"", CClientUIInterface::MSG_ERROR);
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});
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// If necessary, upgrade from older database format.
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// This is a no-op if we cleared the coinsviewdb with -reindex or -reindex-chainstate
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if (!chainstate->CoinsDB().Upgrade()) {
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return ChainstateLoadingError::ERROR_CHAINSTATE_UPGRADE_FAILED;
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}
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// ReplayBlocks is a no-op if we cleared the coinsviewdb with -reindex or -reindex-chainstate
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if (!chainstate->ReplayBlocks()) {
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return ChainstateLoadingError::ERROR_REPLAYBLOCKS_FAILED;
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}
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// The on-disk coinsdb is now in a good state, create the cache
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chainstate->InitCoinsCache(nCoinCacheUsage);
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assert(chainstate->CanFlushToDisk());
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if (!is_coinsview_empty(chainstate)) {
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// LoadChainTip initializes the chain based on CoinsTip()'s best block
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if (!chainstate->LoadChainTip()) {
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return ChainstateLoadingError::ERROR_LOADCHAINTIP_FAILED;
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}
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assert(chainstate->m_chain.Tip() != nullptr);
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}
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}
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} catch (const std::exception& e) {
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LogPrintf("%s\n", e.what());
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return ChainstateLoadingError::ERROR_GENERIC_BLOCKDB_OPEN_FAILED;
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}
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if (!fReset) {
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LOCK(cs_main);
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auto chainstates{chainman.GetAll()};
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if (std::any_of(chainstates.begin(), chainstates.end(),
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[](const CChainState* cs) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { return cs->NeedsRedownload(); })) {
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return ChainstateLoadingError::ERROR_BLOCKS_WITNESS_INSUFFICIENTLY_VALIDATED;
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}
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}
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try {
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LOCK(cs_main);
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for (CChainState* chainstate : chainman.GetAll()) {
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if (!is_coinsview_empty(chainstate)) {
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uiInterface.InitMessage(_("Verifying blocks…").translated);
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if (fHavePruned && check_blocks > MIN_BLOCKS_TO_KEEP) {
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LogPrintf("Prune: pruned datadir may not have more than %d blocks; only checking available blocks\n",
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MIN_BLOCKS_TO_KEEP);
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}
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const CBlockIndex* tip = chainstate->m_chain.Tip();
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RPCNotifyBlockChange(tip);
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if (tip && tip->nTime > GetTime() + MAX_FUTURE_BLOCK_TIME) {
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return ChainstateLoadingError::ERROR_BLOCK_FROM_FUTURE;
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}
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if (!CVerifyDB().VerifyDB(
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*chainstate, chainparams, chainstate->CoinsDB(),
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check_level,
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check_blocks)) {
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return ChainstateLoadingError::ERROR_CORRUPTED_BLOCK_DB;
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}
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}
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} catch (const std::exception& e) {
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LogPrintf("%s\n", e.what());
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return ChainstateLoadingError::ERROR_GENERIC_BLOCKDB_OPEN_FAILED;
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}
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} while(false);
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} catch (const std::exception& e) {
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LogPrintf("%s\n", e.what());
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return ChainstateLoadingError::ERROR_GENERIC_BLOCKDB_OPEN_FAILED;
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}
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return std::nullopt;
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}
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