Identify uniquely a session

Hi Pedro,

You could use getCurrentTime(), ipcGetPid() to get the current time or process id respectively if you want it to be meaningfully named, or you could use makeTempFileName() to make the filename unique.

Regards,

Andrew

Hi Andrew,

Thanks for your answer. I've used ipcGetPid(), and it does exactly what I wanted.

Best regards,

Pedro

Pedro,

One thing to be wary of - if you're running virtuoso on multiple machines, it's possible (albeit fairly unlikely) that two users may have the same process-id. Could include the user name using getLogin() to retrieve that. There's no public function to get the host name (although easy enough to call the UNIX "hostname" command to retrieve that):

id=ipcBeginProcess("hostname")
ipcWait(id)
hostName=ipcReadProcess(id)

Regards,

Andrew.

Hi Andrew,
Thanks for that piece of information. What you've written above works, of course :-)
In the beginning I was planning to use makeTempFileName() instead of ipcGetPid() in order to get an unique identifier, as you suggested on a previous post, but I had a fundamental problem:
my program is divided into functions which need to access the variable "myConfigFile". This variable is composed of "somename_ makeTempFileName_output.txt", so it is unique. Moreover, this variable should be global, but instead of that I am passing the var to each function. Why ? Because I am obtaining the "unbond variable error" and I can't solve this basic problem. To overcome this, and not have the need to pass variables to all functions, I've tried to call makeTempFileName() inside each function but that returns different codes. So I was left with the option of passing the value to the functions. :-(

Thanks for your help.

Best regards,
Pedro

Pedro,

Not really sure why either your global variable access didn't work (without seeing the code), but global variables are bad practice anyway...

Andrew