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Avoid pemanent cs_main/cs_wallet lock during wallet rescans

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This commit is contained in:
Jonas Schnelli
2017-09-07 16:29:59 -07:00
parent 0910cbe4ef
commit 8d0b610fe8
3 changed files with 260 additions and 209 deletions
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45
src/wallet/rpcwallet.cpp
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@@ -3398,30 +3398,40 @@ UniValue rescanblockchain(const JSONRPCRequest& request)
);
}
LOCK2(cs_main, pwallet->cs_wallet);
CBlockIndex *pindexStart = chainActive.Genesis();
CBlockIndex *pindexStop = nullptr;
if (!request.params[0].isNull()) {
pindexStart = chainActive[request.params[0].get_int()];
if (!pindexStart) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid start_height");
}
if (pwallet->IsScanning()) {
throw JSONRPCError(RPC_WALLET_ERROR, "Wallet is currently rescanning. Abort existing rescan or wait.");
}
if (!request.params[1].isNull()) {
pindexStop = chainActive[request.params[1].get_int()];
if (!pindexStop) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid stop_height");
CBlockIndex *pindexStart = nullptr;
CBlockIndex *pindexStop = nullptr;
CBlockIndex *pChainTip = nullptr;
{
LOCK(cs_main);
pindexStart = chainActive.Genesis();
pChainTip = chainActive.Tip();
if (!request.params[0].isNull()) {
pindexStart = chainActive[request.params[0].get_int()];
if (!pindexStart) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid start_height");
}
}
else if (pindexStop->nHeight < pindexStart->nHeight) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "stop_height must be greater then start_height");
if (!request.params[1].isNull()) {
pindexStop = chainActive[request.params[1].get_int()];
if (!pindexStop) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid stop_height");
}
else if (pindexStop->nHeight < pindexStart->nHeight) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "stop_height must be greater then start_height");
}
}
}
// We can't rescan beyond non-pruned blocks, stop and throw an error
if (fPruneMode) {
CBlockIndex *block = pindexStop ? pindexStop : chainActive.Tip();
LOCK(cs_main);
CBlockIndex *block = pindexStop ? pindexStop : pChainTip;
while (block && block->nHeight >= pindexStart->nHeight) {
if (!(block->nStatus & BLOCK_HAVE_DATA)) {
throw JSONRPCError(RPC_MISC_ERROR, "Can't rescan beyond pruned data. Use RPC call getblockchaininfo to determine your pruned height.");
@@ -3436,12 +3446,11 @@ UniValue rescanblockchain(const JSONRPCRequest& request)
throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted.");
}
// if we got a nullptr returned, ScanForWalletTransactions did rescan up to the requested stopindex
stopBlock = pindexStop ? pindexStop : chainActive.Tip();
stopBlock = pindexStop ? pindexStop : pChainTip;
}
else {
throw JSONRPCError(RPC_MISC_ERROR, "Rescan failed. Potentially corrupted data files.");
}
UniValue response(UniValue::VOBJ);
response.pushKV("start_height", pindexStart->nHeight);
response.pushKV("stop_height", stopBlock->nHeight);