cuCtxPopCurrent ( CUcontext * pctx )

Pops the current CUDA context from the CPU thread. The CUDA context must have a usage count of 1. CUDA contexts have a usage count of 1 upon creation; the usage count may be incremented with cuCtxAttach() and decremented with cuCtxDetach().

If successful, cuCtxPopCurrent() passes back the new context handle in *pctx. The old context may then be made current to a different CPU thread by calling cuCtxPushCurrent().

Floating contexts may be destroyed by calling cuCtxDestroy().

If a context was current to the CPU thread before cuCtxCreate() or cuCtxPushCurrent() was called, this function makes that context current to the CPU thread again.

Parameters:

pctx

- Returned new context handle

Returns:: CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_ERROR_INVALID_CONTEXT

Note:: Note that this function may also return error codes from previous, asynchronous launches.

See also:: cuCtxAttach, cuCtxCreate, cuCtxDestroy, cuCtxDetach, cuCtxGetDevice, cuCtxPushCurrent, cuCtxSynchronize