Code::Blocks Forums

User forums => Using Code::Blocks => Topic started by: Hans-Linux on September 27, 2011, 04:41:00 pm

Title: Can't read verlarge (10GB+) files on Windows 2000 and later.
Post by: Hans-Linux on September 27, 2011, 04:41:00 pm

I have been using Code::Blocks 10.5 for some time on 64bit OpenSuse 11.4 and written in 'C' a command line utility that searches a directory tree for files with identical size, compares the content and deletes files with identical content. The largest files tested was 19Gb.

The utility works fine. I want to port it to Windows and downloaded and installed on a 32 bit Win7 box:
codeblocks-10.05mingw-setup.exe

Everything works fine for files up to about 2Gb. Windows "FC.EXE" handles 19Gb. I searched the Forums, Google, etc. and can't find what's wrong. I believe the problem is caused by 32bit library functions.

The last time I coded for MS$ was for MS-DOS in 1995.

Any help will be appreciated.

Hans

 

Title: Re: Can't read verlarge (10GB+) files on Windows 2000 and later.
Post by: oBFusCATed on September 27, 2011, 05:07:43 pm

Read the rules of the forum (you're violating them!).
Then post in a windows api forum or read msdn.com

Title: Re: Can't read verlarge (10GB+) files on Windows 2000 and later.
Post by: thomas on September 27, 2011, 06:01:20 pm

Besides, the reason why fc.exe has no trouble memory mapping a 19GB file under a 32 bit OS is that it doesn't. fc.exe reads one line at a time from a stream. Mapping something larger than the available address space in a single mapping is simply not possible, that has nothing to do with Windows, it would equally fail under OpenSuSE 32.

But, as oBFusCATed pointed out... wrong place to ask here.