[lldb-dev] SB API is not working properly with OSPython plugin

[Jim Ingham via lldb-dev]

All SBValues have an error in them (SBValue.GetError).  Does that say anything interesting?

Jim
  



> On Feb 14, 2019, at 10:08 AM, Alexander Polyakov via lldb-dev <lldb-dev at lists.llvm.org> wrote:
> 
> Hi lldb-dev,
> 
> I work on a custom implementation of OperatingSystem plugin using Python and SB API. I’m trying to fetch information about some variables from the target into the plugin, to do that I’m using the following Python code:
> ready_tasks = self._target.FindGlobalVariables(‘pxReadyTasksLists’, 1).GetValueAtIndex(0)
>  
> When I do `print(ready_tasks)` I get:
> No value
>  
> At the same time, doing the same actions inside lldb embedded interpreter follows to:
> ` print(lldb.target.FindGlobalVariables('pxReadyTasksLists',1).GetValueAtIndex(0))`
>  
> (List_t [5]) pxReadyTasksLists = {
>   [0] = {
>     uxNumberOfItems = 0
>     pxIndex = 0x00000000
>     xListEnd = {
>       xItemValue = 0
>       pxNext = 0x00000000
>       pxPrevious = 0x00000000
>     }
>   }
> …
>  
> Does anybody know what may cause such a behavior?
> 
> -- 
> Alexander
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