From 21d4afa12fbf1e7f59b629060c9e10db213fe07a Mon Sep 17 00:00:00 2001 From: Alex Morcos Date: Thu, 8 Jun 2017 12:15:04 -0400 Subject: [PATCH] Comment clarifications in coins.cpp --- src/coins.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/coins.h b/src/coins.h index 077545a55..7c1d6da2b 100644 --- a/src/coins.h +++ b/src/coins.h @@ -297,6 +297,9 @@ private: void AddCoins(CCoinsViewCache& cache, const CTransaction& tx, int nHeight); //! Utility function to find any unspent output with a given txid. +// This function can be quite expensive because in the event of a transaction +// which is not found in the cache, it can cause up to MAX_OUTPUTS_PER_BLOCK +// lookups to database, so it should be used with care. const Coin& AccessByTxid(const CCoinsViewCache& cache, const uint256& txid); #endif // BITCOIN_COINS_H