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  • How does an imported task disabled ?

How does an imported task disabled ?

SystemVerilog 6745
DPI 29 dpi-c 9 DPI import 5
absingh
absingh
Full Access
8 posts
July 02, 2018 at 5:59 am

2012 Sv LRM discusses about svIsDisabledState() in section 35.9 and also describes it in Annexe 1.3 Source code as.

/*
* Returns 1 if the current execution thread is in the disabled state.
* Disable protocol must be adhered to if in the disabled state.
*/
XXTERN int svIsDisabledState( void );

Please provide any practical scenario in which it gets used, when the task is disabled.
In another words , what causes the imported task to get disabled?

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dave_59
dave_59
Forum Moderator
11281 posts
July 03, 2018 at 1:40 am

In reply to absingh:

The only reason to ever import a C task is if you plan to have that task call an exported time-consuming SystemVerilog-task. In that case, the usual reasons for disabling a task, regardless of whether using the DPI or not is for a timeout or reset;

fork
  time_consuming_task;
  #1000ms ->timeout;
join_any
disable fork

— Dave Rich, Verification Architect, Siemens EDA

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