Mercurial > hg > xemacs-beta
annotate modules/sample/sample.c @ 938:0391335b65dc
[xemacs-hg @ 2002-07-31 07:14:49 by michaels]
2002-07-17 Marcus Crestani <crestani@informatik.uni-tuebingen.de>
Markus Kaltenbach <makalten@informatik.uni-tuebingen.de>
Mike Sperber <mike@xemacs.org>
configure flag to turn these changes on: --use-kkcc
First we added a dumpable flag to lrecord_implementation. It shows,
if the object is dumpable and should be processed by the dumper.
* lrecord.h (struct lrecord_implementation): added dumpable flag
(MAKE_LRECORD_IMPLEMENTATION): fitted the different makro definitions
to the new lrecord_implementation and their calls.
Then we changed mark_object, that it no longer needs a mark method for
those types that have pdump descritions.
* alloc.c:
(mark_object): If the object has a description, the new mark algorithm
is called, and the object is marked according to its description.
Otherwise it uses the mark method like before.
These procedures mark objects according to their descriptions. They
are modeled on the corresponding pdumper procedures.
(mark_with_description):
(get_indirect_count):
(structure_size):
(mark_struct_contents):
These procedures still call mark_object, this is needed while there are
Lisp_Objects without descriptions left.
We added pdump descriptions for many Lisp_Objects:
* extents.c: extent_auxiliary_description
* database.c: database_description
* gui.c: gui_item_description
* scrollbar.c: scrollbar_instance_description
* toolbar.c: toolbar_button_description
* event-stream.c: command_builder_description
* mule-charset.c: charset_description
* device-msw.c: devmode_description
* dialog-msw.c: mswindows_dialog_id_description
* eldap.c: ldap_description
* postgresql.c: pgconn_description
pgresult_description
* tooltalk.c: tooltalk_message_description
tooltalk_pattern_description
* ui-gtk.c: emacs_ffi_description
emacs_gtk_object_description
* events.c:
* events.h:
* event-stream.c:
* event-Xt.c:
* event-gtk.c:
* event-tty.c:
To write a pdump description for Lisp_Event, we converted every struct
in the union event to a Lisp_Object. So we created nine new
Lisp_Objects: Lisp_Key_Data, Lisp_Button_Data, Lisp_Motion_Data,
Lisp_Process_Data, Lisp_Timeout_Data, Lisp_Eval_Data,
Lisp_Misc_User_Data, Lisp_Magic_Data, Lisp_Magic_Eval_Data.
We also wrote makro selectors and mutators for the fields of the new
designed Lisp_Event and added everywhere these new abstractions.
We implemented XD_UNION support in (mark_with_description), so
we can describe exspecially console/device specific data with XD_UNION.
To describe with XD_UNION, we added a field to these objects, which
holds the variant type of the object. This field is initialized in
the appendant constructor. The variant is an integer, it has also to
be described in an description, if XD_UNION is used.
XD_UNION is used in following descriptions:
* console.c: console_description
(get_console_variant): returns the variant
(create_console): added variant initialization
* console.h (console_variant): the different console types
* console-impl.h (struct console): added enum console_variant contype
* device.c: device_description
(Fmake_device): added variant initialization
* device-impl.h (struct device): added enum console_variant devtype
* objects.c: image_instance_description
font_instance_description
(Fmake_color_instance): added variant initialization
(Fmake_font_instance): added variant initialization
* objects-impl.h (struct Lisp_Color_Instance): added color_instance_type
* objects-impl.h (struct Lisp_Font_Instance): added font_instance_type
* process.c: process_description
(make_process_internal): added variant initialization
* process.h (process_variant): the different process types
| author | michaels |
|---|---|
| date | Wed, 31 Jul 2002 07:14:49 +0000 |
| parents | abe6d1db359e |
| children |
| rev | line source |
|---|---|
| 388 | 1 /* |
| 2 * Very simple sample module. Illustrates most of the salient features | |
| 3 * of Emacs dynamic modules. | |
| 4 * (C) Copyright 1998, 1999 J. Kean Johnston. All rights reserved. | |
| 5 */ | |
| 6 | |
| 7 #include <emodules.h> | |
| 8 | |
| 9 /* | |
| 10 * This sample introduces three new Lisp objects to the Lisp reader. | |
| 11 * The first, a simple boolean value, and the second a string. The | |
| 12 * Third is a sample function that simply prints a message. | |
| 13 */ | |
| 14 int sample_bool; | |
| 15 Lisp_Object Vsample_string; | |
| 16 | |
| 17 DEFUN ("sample-function", Fsample_function, 0, 0, "", /* | |
| 18 This is a sample function loaded dynamically. | |
| 19 | |
| 20 You will notice in the source code for this module that the | |
| 21 declaration is identical to internal Emacs functions. This | |
| 22 makes it possible to use the exact same code in a dumped | |
| 23 version of Emacs. | |
| 24 */ | |
| 25 ()) | |
| 26 { | |
| 27 message ("Eureka! It worked"); | |
| 28 return Qt; | |
| 29 } | |
| 30 | |
| 31 /* | |
| 32 * Each dynamically loaded Emacs module is given a name at compile | |
| 33 * time. This is a short name, and must be a valid part of a C | |
| 442 | 34 * identifier. This name is used to construct the name of several |
| 388 | 35 * functions which must appear in the module source code. |
| 442 | 36 * The first such function, modules_of_XXXX, should load in any dependent |
| 388 | 37 * modules. This function is optional, and the module will still load if |
| 38 * it is not present in the module. | |
| 39 * | |
| 40 * The second function, which is NOT optional, is syms_of_XXXX, in which | |
| 41 * all functions that the module will be provided are declared. This | |
| 42 * function will contain calls to DEFSUBR(). | |
| 43 * | |
| 44 * The third function, which is also NOT optional, is vars_of_XXXX, in | |
| 45 * which you declare all variables that the module provides. This | |
| 46 * function will contain calls to DEFVAR_LISP(), DEFVAR_BOOL() etc. | |
| 47 * | |
| 48 * When declaring functions and variables in the syms_of_XXXX and | |
| 49 * vars_of_XXXX functions, you use the exact same syntax that you | |
| 50 * would as if this module were being compiled into the pure Emacs. | |
| 51 * | |
| 52 * All three of these functions are declared as void functions, | |
| 53 * taking no parameters. Since this sample module is called 'sample', | |
| 54 * the functions will be named 'modules_of_sample', 'syms_of_sample' | |
| 55 * and 'vars_of_sample'. | |
| 56 */ | |
| 57 | |
| 58 void | |
| 59 modules_of_sample() | |
| 60 { | |
| 61 /* | |
| 62 * This function isn't actually required as we will not be loading | |
| 442 | 63 * in any dependent modules, but if we were, we would do something like: |
| 64 * emodules_load ("dependent.ell", "sample2", "1.0.0"); | |
| 388 | 65 */ |
| 66 } | |
| 67 | |
| 68 void | |
| 69 syms_of_sample() | |
| 70 { | |
| 71 DEFSUBR(Fsample_function); | |
| 72 } | |
| 73 | |
| 74 void | |
| 75 vars_of_sample() | |
| 76 { | |
| 77 DEFVAR_LISP ("sample-string", &Vsample_string /* | |
| 78 This is a sample string, declared in a dynamic module. | |
| 79 | |
| 80 The syntax and conventions used for all normal Emacs variables | |
| 81 apply equally to modules, using an identical syntax. | |
| 82 */ ); | |
| 83 | |
| 84 DEFVAR_BOOL ("sample-boolean", &sample_bool /* | |
| 85 *Sample boolean value, in a dynamic module. | |
| 86 | |
| 87 This is a user-settable variable, as indicated by the * | |
| 88 as the first character of the description. Declared in | |
| 89 a module exactly as it would be internally in Emacs. | |
| 90 */ ); | |
| 91 } | |
| 92 |