PetscDeviceContextGetCurrentContext — PETSc 3.22.5 documentation

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# PetscDeviceContextGetCurrentContext

Get the current active `PetscDeviceContext`

## Synopsis

    #include <petscdevice.h>
    PetscErrorCode PetscDeviceContextGetCurrentContext(PetscDeviceContext *dctx)

Not Collective

## Output Parameter

- dctx - The `PetscDeviceContext`

## Notes

The user generally should not destroy contexts retrieved with this routine unless they themselves have created them. There exists no protection against destroying the root context.

## Developer Notes

Unless the user has set their own, this routine creates the “root” context the first time it is called, registering its destructor to `PetscFinalize()`.

## See Also

`PetscDeviceContextSetCurrentContext()`, `PetscDeviceContextFork()`, `PetscDeviceContextJoin()`, `PetscDeviceContextCreate()`

## Level

beginner

## Location

src/sys/objects/device/interface/global_dcontext.cxx

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