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Fix rtxn usage in BlockchainLMDB::get_estimated_batch_size 

Should only stop the rtxn if we actually started it
Fixes Coverity 184960
This commit is contained in:
Howard Chu 2018-10-02 16:14:20 +01:00
parent 83d8f03c23
commit 7c790f11f2
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GPG Key ID: FD2A70B44AB11BA7
1 changed files with 2 additions and 2 deletions
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4
src/blockchain_db/lmdb/db_lmdb.cpp
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@ -649,7 +649,7 @@ uint64_t BlockchainLMDB::get_estimated_batch_size(uint64_t batch_num_blocks, uin
{
MDB_txn *rtxn;
mdb_txn_cursors *rcurs;
block_rtxn_start(&rtxn, &rcurs);
bool my_rtxn = block_rtxn_start(&rtxn, &rcurs);
for (uint64_t block_num = block_start; block_num <= block_stop; ++block_num)
{
// we have access to block weight, which will be greater or equal to block size,
@ -661,7 +661,7 @@ uint64_t BlockchainLMDB::get_estimated_batch_size(uint64_t batch_num_blocks, uin
// some blocks were to be skipped for being outliers.
++num_blocks_used;
}
block_rtxn_stop();
if (my_rtxn) block_rtxn_stop();
avg_block_size = total_block_size / num_blocks_used;
MDEBUG("average block size across recent " << num_blocks_used << " blocks: " << avg_block_size);
}