4.9. Context Management [DEPRECATED]
This section describes the deprecated context management functions of the low-level CUDA driver application programming interface.
Functions
- CUresult cuCtxAttach ( CUcontext* pctx, unsigned int flags )
- Increment a context's usage-count.
- CUresult cuCtxDetach ( CUcontext ctx )
- Decrement a context's usage-count.
Functions
- CUresult cuCtxAttach ( CUcontext* pctx, unsigned int flags )
-
Increment a context's usage-count.
Parameters
- pctx
- - Returned context handle of the current context
- flags
- - Context attach flags (must be 0)
Returns
CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE
Deprecated
Note that this function is deprecated and should not be used.
Description
Increments the usage count of the context and passes back a context handle in *pctx that must be passed to cuCtxDetach() when the application is done with the context. cuCtxAttach() fails if there is no context current to the thread.
Currently, the flags parameter must be 0.
Note:Note that this function may also return error codes from previous, asynchronous launches.
See also:
cuCtxCreate, cuCtxDestroy, cuCtxDetach, cuCtxGetApiVersion, cuCtxGetCacheConfig, cuCtxGetDevice, cuCtxGetFlags, cuCtxGetLimit, cuCtxPopCurrent, cuCtxPushCurrent, cuCtxSetCacheConfig, cuCtxSetLimit, cuCtxSynchronize
- CUresult cuCtxDetach ( CUcontext ctx )
-
Decrement a context's usage-count.
Parameters
- ctx
- - Context to destroy
Returns
CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_ERROR_INVALID_CONTEXT
Deprecated
Note that this function is deprecated and should not be used.
Description
Decrements the usage count of the context ctx, and destroys the context if the usage count goes to 0. The context must be a handle that was passed back by cuCtxCreate() or cuCtxAttach(), and must be current to the calling thread.
Note:Note that this function may also return error codes from previous, asynchronous launches.
See also:
cuCtxCreate, cuCtxDestroy, cuCtxGetApiVersion, cuCtxGetCacheConfig, cuCtxGetDevice, cuCtxGetFlags, cuCtxGetLimit, cuCtxPopCurrent, cuCtxPushCurrent, cuCtxSetCacheConfig, cuCtxSetLimit, cuCtxSynchronize