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speedup get_output_histogram for all amounts when min_count > 0

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This skips the vast majority of "dust" output amounts with just
one instance on the chain. Clocks in at 0.15% of the original
time on testnet.
This commit is contained in:
moneromooo-monero
2018-03-22 17:51:58 +00:00
parent 2dae0f203a
commit ffeeefde60
6 changed files with 16 additions and 10 deletions
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src/cryptonote_core/blockchain.h
+2 -1
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@@ -827,10 +827,11 @@ namespace cryptonote
* @param amounts optional set of amounts to lookup
* @param unlocked whether to restrict instances to unlocked ones
* @param recent_cutoff timestamp to consider outputs as recent
* @param min_count return only amounts with at least that many instances
*
* @return a set of amount/instances
*/
std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>> get_output_histogram(const std::vector<uint64_t> &amounts, bool unlocked, uint64_t recent_cutoff) const;
std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>> get_output_histogram(const std::vector<uint64_t> &amounts, bool unlocked, uint64_t recent_cutoff, uint64_t min_count = 0) const;
/**
* @brief perform a check on all key images in the blockchain