[petsc-dev] MatISGetLocalMat: need to MatDestroy the returned local matrice ?

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:

>    Jed,
>
>      Should this utilize the Get/Restore paradigm? 
>
>      If not should the name be different to prevent confusion? Currently we have 
>
>   XXXCreate -->  user needs to call a destroy
>
>    XXXXGetYYY  --> user needs to call a restore (but not always?)
>
>    Could we introduce say
>
>     XXXAccessYYY   --> user does not call destroy or restore ?

Even VecGetArrayRead requires matching Restore.  Light access is less
safe and gives the library less opportunity for strictness to catch
bugs.
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