How to read from and write into the same file from multiple threads?

I need to read from and write into a same file multiple threads.
How can we do that without any data contamination.
Can u please provide coding for this type of task.
Thanks in advance.

Assuming you are using RandomAccessFile, you can use the locking functionality in the Java NIO library to lock sections of a file that you are reading/writing from each thread (or process).
If you can't use NIO, and all your threads are in the same application, you can create your own in-process locking mechanism that each thread uses prior to accessing the file. That would take some development, and the OS already has the capability, so using NIO is the best way to go if you can use JDK 1.4 or higher.
- K
I need to read from and write into a same file
multiple threads.
How can we do that without any data contamination.
Can u please provide coding for this type of task.
Thanks in advance.

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evolution wrote in message news:<[email protected]>...
> How can I save my data and the date,the time into the same file when
> I run this VI at different times?
>
> I use a translation stage for the experiment.For each user in the lab
> the stage position (to start an experiment) is different.I defined one
> end of the stage as zero. I want to save the position , date and time
> of the stage with respect to zero.I want all these in one file, nd
> everytime I run it it should save to the same file, like this:
> 2/12/03 16:04 13567
> 2/13/03 10:15 35678
>
> So I will track the position from day to day.If naybody helps, I
> appreciate it.Thanks.
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Attachments:
ReadWAS.vi ‏112 KB
ReadSteering.vi ‏143 KB
WriteSteering.vi ‏114 KB

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How to read from and write into the same file from multiple threads?

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