Write to a file using several threads

Hello,
I'm trying to implement a writing procedure into a file using several different threads. The idea I have is to make each thread to write in a different place in the file. In your opinion is there a possibility of some incoherence.
Regards,
Anton
Edited by: anton_tonev on Oct 22, 2007 3:28 AM

At this moment I can't give a source code example because I'm writing it :) and I'm trying to see the cases where I may have some problems.
But my idea is to access the file at any time and to write into it with differenent threads in a differenet places in this file. In fact the problem I'm trying to solve is :
I have a objects called Data that are generated by some other thread independent of my application. This thread puts the Data objects in some kind if buffer. When the buffer is full, I'm creating a few threads fo every object Data in this buffer (the data objects in its own is some collection of floats and doubles) So I'm trying to position the new created threads over the file but in different places and then make them write the data collected in the object Data.
To position de threads over the file, I'm accessing it by some synchronous method to undestand where it can write in this file and the writing is not synchronous because I'm trying to calculate the exact place and number of bytes of writing and in this way to avoid (may be) the eventuality of errors.
Regards,
Anton

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