Returns information about the kernel object.

cl_int clGetKernelInfo ( cl_kernel kernel,
  cl_kernel_info param_name,
  size_t param_value_size,
  void *param_value,
  size_t *param_value_size_ret)



Specifies the kernel object being queried.


Specifies the information to query. The list of supported param_name types and the information returned in param_value by clGetKernelInfo is described in the table below.


A pointer to memory where the appropriate result being queried is returned. If param_value is NULL, it is ignored.


Used to specify the size in bytes of memory pointed to by param_value. This size must be greater than or equal to size of return type as described in the table below.

cl_kernel_info Return Type Info. returned in param_value
CL_KERNEL_FUNCTION_NAME char[] Return the kernel function name.
CL_KERNEL_NUM_ARGS cl_uint Return the number of arguments to kernel.

Return the kernel reference count.

The reference count returned should be considered immediately stale. It is unsuitable for general use in applications. This feature is provided for identifying memory leaks.

CL_KERNEL_CONTEXT cl_context Return the context associated with kernel.
CL_KERNEL_PROGRAM cl_program Return the program object associated with kernel.

the actual size in bytes of data copied to param_value. If param_value_size_ret is NULL, it is ignored.


Returns CL_SUCCESS if the function is executed successfully. Otherwise, it returns one of the following errors:

  • CL_INVALID_VALUE if param_name is not valid, or if size in bytes specified by param_value_size is less than the size of return type as described in the table above and param_value is not NULL
  • CL_INVALID_KERNEL if kernel is not a valid kernel object.
  • CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.
  • CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.


OpenCL Specification

Also see

clCreateKernel, clCreateKernelsInProgram, clRetainKernel, clReleaseKernel, clSetKernelArg, clGetKernelWorkGroupInfo

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