LabWindows/CVI

[David_Lee]

Hello,

Can  use the same thread safe variable in the different processes?  my application has a log file used to record some event, the log file will be accessed by the different process, is there any synchronous method to access the log file with CVI ?

David

[RobertoBozzolo]

Limiting concurrent access to shared resources can be better obtained by using locks: once created, the lock can be get by one requester at a time by calling CmtGetLock, the other being blocked in the same call until the lock is free. If you do not want to lock a process you can use CmtTryToGtLock instead.

Don't forget to discard locks when you have finished using them or at program end.

Alternatively you can PostDeferredCall a unique function (executed in the main thread) to write the log passing the apprpriate data to it.