[petsc-users] Calling function from outside of SNES

[Jed Brown]

On Thu, Apr 5, 2012 at 05:02, behzad baghapour
<behzad.baghapour at gmail.com>wrote:

> I could solve the problem by shifting the postCheck below the
> SNESSetFromOptions but still have another problem with passing defined
> context:
>
> All my calcualtions are saved into global FieldContext including
> flow-field variables. I passed it to PostCheck. I could apply my desired
> change on the context BUT the results came back to the original values
> (before postCheck function) and therefore my efferts to modify the Newton
> procedure did not achieved.
>
> How should I handle it?
>

You will have to explain more completely what is happening. If you want the
postcheck to modify a context, you have to make sure that it sees the same
context. PETSc NEVER does anything with the context pointers, it just
passes it through to the callbacks.
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