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For
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Basic Script Engine
Project or System
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Purpose
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To enable multi-thread script COM calls.
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Comments
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Script COM calls prior to CIMPLICITY 7.0 occurred in a single-thread as follows.
- COM calls were marshaled over to a single script thread to be executed.
- The script thread would wait for the COM thread to complete a call.
If a thread was already making a COM call, then the next thread had to wait for it to finish before it could make a COM call. Each thread would have to wait for completion of the prior COM call.
Beginning with CIMPLICITY 7.0:
- Each COM call can occur in its execution thread instead of being marshaled over to a single thread.
- BASIC_MULTITHREAD_COM provides the ability to choose between using the single-thread or multi-thread COM calls in the Basic Script Engine.
The initialization routine for the Basic Script Engine includes a flag that controls the threading behavior of the script engine.
If BASIC_MULTITHREAD_COM is enabled, the flag will call COM objects in the thread of execution instead of being marshaled over to a single thread.
Note: Some limited releases before CIMPLICITY 7.0 may also include this feature.
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Value
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Choose either of the following.
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Y
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Initializes multi-thread COM calls.
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N
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Initializes single-thread COM calls.
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Default Value
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N
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Note: The default has been set to N in order to insure backward compatibility with scripts created in previous CIMPLICITY versions.
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