clEnqueueMapBuffer

function clEnqueueMapBuffer(

  command_queue: cl_command_queue;

  buffer: cl_mem;

  blocking_map: cl_bool;

  map_flags: cl_map_flags;

  offset: csize_t;

  cb: csize_t;

  num_events: cl_uint;

  events_list: Pcl_event;

  event: Pcl_event;

  var errcode_ret: cl_int

):Pointer;