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util/hex.h: Reserve result space in hex_encode()

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Reserve enough space for the result of hex_encode() to eliminate reallocations
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starling13 2019-04-07 13:01:42 +03:00 • committed by SmallJoker
parent 3deaa7cf57
commit 1db4ae96b1
1 changed files with 2 additions and 0 deletions
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2
src/util/hex.h
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@ -26,6 +26,8 @@ static const char hex_chars[] = "0123456789abcdef";
static inline std::string hex_encode(const char *data, unsigned int data_size) static inline std::string hex_encode(const char *data, unsigned int data_size)
{ {
std::string ret; std::string ret;
ret.reserve(data_size * 2);
char buf2[3]; char buf2[3];
buf2[2] = '\0'; buf2[2] = '\0';