file handling/comparing.

[coo_pal]

hi All!

i need to do the follwoing i will create a thread
which will contineously read data from serial port and
will dump it in a file. Second thread will contineously read this data
and compare it with the previous data in the same file if there
is any change it will set some flag.Basically i don't know much
about file handling, could somebody suggest as how to do it?

thanks
cool

[knutso]

You can use the _fstat function to see if the file is changed.
For file IO, the easiest would be to use fopen/fread/fwrite, etc..(Alternatively open/sopen/read/write)
For syncronization between the threads you can use CreateMutex/WaitforsingleObject/ReleaseMutex