Re: Faster StrNCpy
От | Tom Lane |
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Тема | Re: Faster StrNCpy |
Дата | |
Msg-id | 26197.1159458964@sss.pgh.pa.us обсуждение исходный текст |
Ответ на | Re: Faster StrNCpy ("Strong, David" <david.strong@unisys.com>) |
Ответы |
Re: Faster StrNCpy
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Список | pgsql-hackers |
"Strong, David" <david.strong@unisys.com> writes: > Just wondering - are any of these cases where a memcpy() would work > just as well? Or are you not sure that the source string is at least > 64 bytes in length? In most cases, we're pretty sure that it's *not* --- it'll just be a palloc'd C string. I'm disinclined to fool with the restriction that namestrcpy zero-pad Name values, because they might end up on disk, and allowing random memory contents to get written out is ungood from a security point of view. However, it's entirely possible that it'd be a bit faster to do a MemSet followed by strlcpy than to use strncpy for zero-padding. regards, tom lane
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