Subject:
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Re: how does a line ends?
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Newsgroups:
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lugnet.cad
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Date:
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Sat, 7 Apr 2007 22:59:06 GMT
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Viewed:
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1760 times
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In lugnet.cad, Ross Crawford wrote:
Thanks, ROSCO. I took that code and modified it to use char instead of _TCHAR,
and got timings of 720-750ms, compared to the 750-780ms I got with my original
one. I then modified it to support CR and LF interchangeably, and got back to
the 750-780ms timings from my original code. So it seems safe to say that the
actual MS fgets function is done differently. (The one you posted is for
_TCHAR, which is two bytes when UNICODE is defined, and one byte when UNICODE
isn’t defined.)
Note that all of my timings have been done in release mode with optimizations
enabled. I’m not going to post any of these test routines due to the fact that
I’m unsure about the copyright restrictions. Sure the MS code is public, but it
doesn’t say to feel free to copy it.
--Travis
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Message has 2 Replies:
 | | Re: how does a line ends?
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| (...) Interesting. I looked at the C runtime library sources that came with MSVC++ 6.0. The fgets() function there is definitely a little different than either yours or the one ROSCO linked. It does have a couple calls for thread safety, but (...) (17 years ago, 7-Apr-07, to lugnet.cad, FTX)
| | | Re: how does a line ends?
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| (...) Now that I'm at work, I'm able to look at Microsoft's implementation of fgets for Visual Studio 2005. They do a lock on the file prior to their loop, then call _fgetc_nolock to get each character, instead of fgetc or fread. (That's an (...) (17 years ago, 9-Apr-07, to lugnet.cad, FTX)
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