Agilent Technologies VEE Pro Guía de usuario Pagina 487

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Optimizing Agilent VEE Programs Chapter 12
VEE User’s Guide 459
Execute Program Object
The Execute Program object has these characteristics:
Easier to use
Longer start- up time
Protected address space
Choice of synchronous or asynchronous execution
Service of asynchronous events
Safer (If the program called crashes, you get an error
message.)
Better for continuous data acquisition
Compiled Functions
Compiled functions, using the Import Library and Call objects,
have these characteristics:
Short start- up time
Communication by passing on stack and memory space
shared with VEE
Synchronous execution
Signals and exceptions not blocked or caught (such as GPF
messages)
Compiler for textual language required
More complicated to use. More risk in using. (An
out- of- bounds array error or overwriting memory will cause
VEE to crash.)
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