Hi all,
I have a problem that should be quite common, but I'm not (yet) familiar with process synchronization in .NET:
There are several applications that write to a single file on disk. The apps open a FileStream with FileShare.None to prevent others
from reading garbage.
Now if a second process wants to open the file, it will fail. Currently I put the thread in a short Sleep and retry loop, but I'd
rather like to WaitForSingleObject() or so: The process 2 should be blocked until the first one closes the file and the file
(handle?) gets "signaled".
I came across the W32 Read/WriteFileEx(), which performs overlapped I/O, but I have a feeling that's a number too big...
Can anyone point me in the right direction?
Thanks a lot,
ulrich 2 1730
Ulrich Sprick <no******************@gmx.de> wrote: I have a problem that should be quite common, but I'm not (yet) familiar with process synchronization in .NET:
There are several applications that write to a single file on disk. The apps open a FileStream with FileShare.None to prevent others from reading garbage.
Now if a second process wants to open the file, it will fail. Currently I put the thread in a short Sleep and retry loop, but I'd rather like to WaitForSingleObject() or so: The process 2 should be blocked until the first one closes the file and the file (handle?) gets "signaled".
I came across the W32 Read/WriteFileEx(), which performs overlapped I/O, but I have a feeling that's a number too big... Can anyone point me in the right direction?
I'd suggest using a Mutex which you wait for and signal.
--
Jon Skeet - <sk***@pobox.com> http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
Thanks Jon, I'll give it a try.
ulrich
"Jon Skeet [C# MVP]" <sk***@pobox.com> schrieb im Newsbeitrag news:MP************************@msnews.microsoft.c om... Ulrich Sprick <no******************@gmx.de> wrote: I have a problem that should be quite common, but I'm not (yet) familiar with process synchronization in .NET:
There are several applications that write to a single file on disk. The apps open a FileStream with FileShare.None to prevent others from reading garbage.
Now if a second process wants to open the file, it will fail. Currently I put the thread in a short Sleep and retry loop, but I'd rather like to WaitForSingleObject() or so: The process 2 should be blocked until the first one closes the file and the file (handle?) gets "signaled".
I came across the W32 Read/WriteFileEx(), which performs overlapped I/O, but I have a feeling that's a number too big... Can anyone point me in the right direction?
I'd suggest using a Mutex which you wait for and signal.
-- Jon Skeet - <sk***@pobox.com> http://www.pobox.com/~skeet If replying to the group, please do not mail me too This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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