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[Trivial] Add a comment on the use of prevector in script.

0.16
Gregory Maxwell 7 years ago
parent
commit
08f71c29ea
  1. 6
      src/script/script.h

6
src/script/script.h

@ -377,6 +377,12 @@ private: @@ -377,6 +377,12 @@ private:
int64_t m_value;
};
/**
* We use a prevector for the script to reduce the considerable memory overhead
* of vectors in cases where they normally contain a small number of small elements.
* Tests in October 2015 showed use of this reduced dbcache memory usage by 23%
* and made an initial sync 13% faster.
*/
typedef prevector<28, unsigned char> CScriptBase;
/** Serialized script, used inside transaction inputs and outputs */

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