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blockchain_db: fix db txn ending too early

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The db txn in add_block ending caused the entire overarching
batch txn to stop.
Also add a new guard class so a db txn can be stopped in the
face of exceptions.

Also use a read only db txn in init when the db itself is
read only, and do not save the max tx size in that case.
This commit is contained in:
moneromooo-monero 2019-04-05 09:28:30 +00:00
parent 37345921ec
commit 5e673c03fe
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GPG key ID: 686F07454D6CEFC3
9 changed files with 144 additions and 95 deletions
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8
src/cryptonote_basic/hardfork.cpp
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@ -266,11 +266,9 @@ bool HardFork::reorganize_from_chain_height(uint64_t height)
bool HardFork::rescan_from_block_height(uint64_t height)
{
CRITICAL_REGION_LOCAL(lock);
db.block_txn_start(true);
if (height >= db.height()) {
db.block_txn_stop();
db_rtxn_guard rtxn_guard(&db);
if (height >= db.height())
return false;
}
versions.clear();
@ -293,8 +291,6 @@ bool HardFork::rescan_from_block_height(uint64_t height)
current_fork_index = voted;
}
db.block_txn_stop();
return true;
}