求助！请各位大侠帮我看看这是什么意思？FixupStub(ALibFile, AHandle, 'udefrag_monolithic_native_app_i

  FixupStub(ALibFile, AHandle, 'udefrag_monolithic_native_app_init',       @DefragMonNativeAPPInit);
  FixupStub(ALibFile, AHandle, 'udefrag_monolithic_native_app_unload',     @DefragMonNativeAPPUnload);
  FixupStub(ALibFile, AHandle, 'udefrag_init',                             @DefragInit);
  FixupStub(ALibFile, AHandle, 'udefrag_unload',                           @DefragUnload);
  FixupStub(ALibFile, AHandle, 'udefrag_start',                            @DefragStart);
  FixupStub(ALibFile, AHandle, 'udefrag_stop',                             @DefragStop);
  FixupStub(ALibFile, AHandle, 'udefrag_get_progress',                     @DefragGetProgress);
  FixupStub(ALibFile, AHandle, 'udefrag_get_map',                          @DefragGetMap);
  FixupStub(ALibFile, AHandle, 'udefrag_get_default_formatted_results',   @DefragGetDefaultFormatResults);
  FixupStub(ALibFile, AHandle, 'udefrag_get_error_description',            @DefragGetErrorDescription);
  FixupStub(ALibFile, AHandle, 'udefrag_get_avail_volumes',                @DefragGetAvailVolumes);
  FixupStub(ALibFile, AHandle, 'udefrag_validate_volume',                  @DefragValidateVolume);
  FixupStub(ALibFile, AHandle, 'udefrag_fbsize',                           @DefragFbsize);
  FixupStub(ALibFile, AHandle, 'udefrag_dfbsize',                          @DefragDFBSize);
  FixupStub(ALibFile, AHandle, 'winx_create_event',    @DeCreateEvent);
  FixupStub(ALibFile, AHandle, 'winx_open_event',      @DeOpenEvent);
  FixupStub(ALibFile, AHandle, 'winx_destroy_event',   @DeDestoryEvent);
  FixupStub(ALibFile, AHandle, 'udefrag_kernel_native_init',       @DefragNativeInit);
  FixupStub(ALibFile, AHandle, 'udefrag_kernel_native_unload',     @DefragNativeUnLoad);
  FixupStub(ALibFile, AHandle, 'udefrag_kernel_start',             @DefragKernelStart);
  FixupStub(ALibFile, AHandle, 'udefrag_kernel_stop',              @DefragKernelGetStatistic);
  FixupStub(ALibFile, AHandle, 'udefrag_kernel_get_statistic',     @DefragKernelStop);