Lock a Resource While Running Tests in Parallel in TestStand

Updated Jan 14, 2026

Environment

Software

  • TestStand

I have a sequence file that is being called using the batch or parallel process model and it contains a step that uses a resource which cannot be accessed by two processes at once. How can I lock this resource so only one test socket can access it at a time but continue running my sequence with the batch or parallel model?

The recommended method for locking a resource is to create a lock step type in the main sequence before executing the step that accesses the resource. For more guidance on using the lock step type, review the example found in 

<TestStand Public>\Examples\Built-In Step Types\Synchronization Step Types\Synchronization Step Types - Lock.seq

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