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Switch CCoinsView and chainstate db from per-txid to per-txout

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This patch makes several related changes:
* Changes the CCoinsView virtual methods (GetCoins, HaveCoins, ...)
  to be COutPoint/Coin-based rather than txid/CCoins-based.
* Changes the chainstate db to a new incompatible format that is also
  COutPoint/Coin based.
* Implements reconstruction code for hash_serialized_2.
* Adapts the coins_tests unit tests (thanks to Russell Yanofsky).

A side effect of the new CCoinsView model is that we can no longer
use the (unreliable) test for transaction outputs in the UTXO set
to determine whether we already have a particular transaction.
This commit is contained in:
Pieter Wuille
2017-04-25 11:29:39 -07:00
parent 4ec0d9e794
commit 5083079688
15 changed files with 363 additions and 373 deletions
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7
src/rpc/rawtransaction.cpp
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@@ -219,9 +219,10 @@ UniValue gettxoutproof(const JSONRPCRequest& request)
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
pblockindex = mapBlockIndex[hashBlock];
} else {
CCoins coins;
if (pcoinsTip->GetCoins(oneTxid, coins) && coins.nHeight > 0 && coins.nHeight <= chainActive.Height())
pblockindex = chainActive[coins.nHeight];
const Coin& coin = AccessByTxid(*pcoinsTip, oneTxid);
if (!coin.IsPruned() && coin.nHeight > 0 && coin.nHeight <= chainActive.Height()) {
pblockindex = chainActive[coin.nHeight];
}
}
if (pblockindex == NULL)