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| author | Pieter Wuille <pieter.wuille@gmail.com> | 2017-06-13 12:17:30 -0700 |
|---|---|---|
| committer | Pieter Wuille <pieter.wuille@gmail.com> | 2017-06-26 16:16:26 -0700 |
| commit | 21180ff73436e198b6828c312ddfd0a1195447b2 (patch) | |
| tree | 32541dfda7113742cc54340eda7e859ab62869ce /src/coins.h | |
| parent | 234ffc677ee58591b139695bf92bbd6f504ee91a (diff) | |
Simplify return values of GetCoin/HaveCoin(InCache)
This removes the possibility for GetCoin/HaveCoin/HaveCoinInCache to return
true while the respective coin is spent. By doing it across all calls, some
extra checks can be eliminated.
coins_tests is modified to call HaveCoin sometimes before and sometimes
after AccessCoin. A further change is needed because the semantics for
GetCoin slightly changed, causing a pruned entry in the parent cache to not
be pulled into the child in FetchCoin.
Diffstat (limited to 'src/coins.h')
| -rw-r--r-- | src/coins.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/coins.h b/src/coins.h index 4774c9f6a6..077545a55b 100644 --- a/src/coins.h +++ b/src/coins.h @@ -145,11 +145,13 @@ private: class CCoinsView { public: - //! Retrieve the Coin (unspent transaction output) for a given outpoint. + /** Retrieve the Coin (unspent transaction output) for a given outpoint. + * Returns true only when an unspent coin was found, which is returned in coin. + * When false is returned, coin's value is unspecified. + */ virtual bool GetCoin(const COutPoint &outpoint, Coin &coin) const; - //! Just check whether we have data for a given outpoint. - //! This may (but cannot always) return true for spent outputs. + //! Just check whether a given outpoint is unspent. virtual bool HaveCoin(const COutPoint &outpoint) const; //! Retrieve the block hash whose state this CCoinsView currently represents |