program reference count.
cl_int clReleaseProgram(cl_program program)
The program object is deleted after all kernel objects associated with
program have been deleted and the
program reference count becomes zero.
Using this function to release a reference that was not obtained by creating the object or by calling
clRetainProgram causes undefined behavior.
CL_SUCCESS if the function is executed successfully.
Otherwise, it returns one of the following errors:
programis not a valid program object.
CL_OUT_OF_RESOURCESif there is a failure to allocate resources required by the OpenCL implementation on the device.
CL_OUT_OF_HOST_MEMORYif there is a failure to allocate resources required by the OpenCL implementation on the host.