Click here to Skip to main content
11,492,962 members (58,386 online)
Rate this: bad
good
Please Sign up or sign in to vote.
See more: C++
how to map big size file (more than 2GB file) with MapViewOfFile api
Posted 1-Feb-13 4:20am
Comments
Sergey Alexandrovich Kryukov at 1-Feb-13 12:42pm
   
What did you try so far? Documentation is available, so what's the problem?
—SA

1 solution

Rate this: bad
good
Please Sign up or sign in to vote.

Solution 1

If you try to map at something other than a multiple of the allocation granularity, the mapping will fail and GetLastError will return ERROR_MAPPED_ALIGNMENT

From MSDN
To obtain the memory allocation granularity of the system, use the GetSystemInfo function, which fills in the members of a SYSTEM_INFO structure.

For files that are larger than the address space, you can only map a small portion of the file data at one time. When the first view is complete, you can unmap it and map a new view.

To obtain the size of a view, use the VirtualQuery function.
  Permalink  
Comments
H.Brydon at 2-Feb-13 2:27am
   
+5 for your answer...
sid2881986 at 2-Feb-13 4:12am
   
k....

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
0 Sergey Alexandrovich Kryukov 419
1 Maciej Los 286
2 F-ES Sitecore 224
3 KarstenK 210
4 CPallini 208
0 Sergey Alexandrovich Kryukov 10,062
1 OriginalGriff 8,620
2 Sascha Lefèvre 3,609
3 Maciej Los 3,372
4 Richard Deeming 2,500


Advertise | Privacy | Mobile
Web02 | 2.8.150520.1 | Last Updated 1 Feb 2013
Copyright © CodeProject, 1999-2015
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100