| clusardi2k@aol.com 2005-08-17, 5:04 pm |
| Solved it by myself, see below.
SUMMARY
C and C++ file operations, by default, perform their own data caching.
This caching is in addition to the disk caching done by the operating
system. Under certain conditions it may be necessary to ensure your
data is fully flushed to the disk. This article explains how to ensure
that your data is properly flushed to the disk.
MORE INFORMATION
To flush the C runtime buffers, you need a call to fflush for files
that are opened with fopen or a call to the flush function for C++
ofstream objects. Flushing the operating system's disk cache is a
little more difficult; it depends on the operating system in use.
16-bit Operating Systems - MS-DOS or Windows 3.1
In MS-DOS or Windows 3.1 running Smartdrv.exe version 4.0 or later, you
have two choices. You can use the _commit C runtime function or link
with Commode.obj and use the fflush C runtime function.
32-bit Windows Operating Systems
In 32-bit versions of Windows, the operating system has built-in disk
caching. The only way to force a file to be flushed to disk is by
linking to Commode.obj.
Commode.obj is designed to affect the way the C Runtime handles files.
When you link to this .obj file, a call to the C runtime function
fflush also forces the operating system to flush its cache to disk,
making the call to _commit unnecessary.
Christopher Lusardi
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