Mercurial > hg > xemacs-beta
annotate man/lispref/errors.texi @ 5142:f965e31a35f0
reduce lcrecord headers to 2 words, rename printing_unreadable_object
-------------------- ChangeLog entries follow: --------------------
man/ChangeLog addition:
2010-03-13 Ben Wing <ben@xemacs.org>
* internals/internals.texi (Working with Lisp Objects):
* internals/internals.texi (Writing Macros):
* internals/internals.texi (lrecords):
More rewriting to correspond with changes from
*LRECORD* to *LISP_OBJECT*.
modules/ChangeLog addition:
2010-03-13 Ben Wing <ben@xemacs.org>
* postgresql/postgresql.c (print_pgconn):
* postgresql/postgresql.c (print_pgresult):
printing_unreadable_object -> printing_unreadable_object_fmt.
2010-03-13 Ben Wing <ben@xemacs.org>
* ldap/eldap.c (print_ldap):
printing_unreadable_object -> printing_unreadable_object_fmt.
src/ChangeLog addition:
2010-03-13 Ben Wing <ben@xemacs.org>
* alloc.c (alloc_sized_lrecord_1):
* alloc.c (alloc_sized_lrecord_array):
* alloc.c (old_alloc_sized_lcrecord):
* alloc.c (disksave_object_finalization_1):
* alloc.c (mark_lcrecord_list):
* alloc.c (alloc_managed_lcrecord):
* alloc.c (free_managed_lcrecord):
* alloc.c (tick_lcrecord_stats):
* alloc.c (sweep_lcrecords_1):
* buffer.c (print_buffer):
* buffer.c (DEFVAR_BUFFER_LOCAL_1):
* casetab.c:
* casetab.c (print_case_table):
* console.c (print_console):
* console.c (DEFVAR_CONSOLE_LOCAL_1):
* data.c (print_weak_list):
* data.c (print_weak_box):
* data.c (print_ephemeron):
* data.c (ephemeron_equal):
* database.c (print_database):
* database.c (finalize_database):
* device-msw.c (sync_printer_with_devmode):
* device-msw.c (print_devmode):
* device-msw.c (finalize_devmode):
* device.c:
* device.c (print_device):
* elhash.c:
* elhash.c (print_hash_table):
* eval.c (print_subr):
* eval.c (print_multiple_value):
* event-stream.c (event_stream_resignal_wakeup):
* events.c (clear_event_resource):
* events.c (zero_event):
* events.c (print_event):
* extents.c:
* extents.c (print_extent):
* file-coding.c (print_coding_system):
* font-mgr.c:
* font-mgr.c (Ffc_init):
* frame.c:
* frame.c (print_frame):
* gc.c:
* gc.c (GC_CHECK_NOT_FREE):
* glyphs.c:
* glyphs.c (print_image_instance):
* glyphs.c (print_glyph):
* gui.c (print_gui_item):
* gui.c (copy_gui_item):
* keymap.c (print_keymap):
* keymap.c (MARKED_SLOT):
* lisp.h:
* lisp.h (struct Lisp_String):
* lisp.h (DEFUN):
* lisp.h (DEFUN_NORETURN):
* lrecord.h:
* lrecord.h (NORMAL_LISP_OBJECT_UID):
* lrecord.h (struct lrecord_header):
* lrecord.h (set_lheader_implementation):
* lrecord.h (struct old_lcrecord_header):
* lrecord.h (struct free_lcrecord_header):
* marker.c (print_marker):
* mule-charset.c:
* mule-charset.c (print_charset):
* objects.c (print_color_instance):
* objects.c (print_font_instance):
* objects.c (finalize_font_instance):
* print.c (print_cons):
* print.c (printing_unreadable_object_fmt):
* print.c (printing_unreadable_lisp_object):
* print.c (external_object_printer):
* print.c (internal_object_printer):
* print.c (debug_p4):
* print.c (ext_print_begin):
* process.c (print_process):
* rangetab.c (print_range_table):
* rangetab.c (range_table_equal):
* scrollbar.c (free_scrollbar_instance):
* specifier.c (print_specifier):
* specifier.c (finalize_specifier):
* symbols.c (guts_of_unbound_marker):
* symeval.h:
* symeval.h (DEFVAR_SYMVAL_FWD):
* tooltalk.c:
* tooltalk.c (print_tooltalk_message):
* tooltalk.c (print_tooltalk_pattern):
* ui-gtk.c (ffi_object_printer):
* ui-gtk.c (emacs_gtk_object_printer):
* ui-gtk.c (emacs_gtk_boxed_printer):
* window.c (print_window):
* window.c (free_window_mirror):
* window.c (debug_print_window):
* xemacs.def.in.in:
(1) printing_unreadable_object -> printing_unreadable_object_fmt.
(2) printing_unreadable_lcrecord -> printing_unreadable_lisp_object
and fix up so it no longer requires an lcrecord.
These previous changes eliminate most of the remaining places where
the terms `lcrecord' and `lrecord' occurred outside of specialized
code.
(3) Fairly major change: Reduce the number of words in an lcrecord
from 3 to 2. The third word consisted of a uid that duplicated the
lrecord uid, and a single free bit, which was moved into the lrecord
structure. This reduces the size of the `uid' slot from 21 bits to
20 bits. Arguably this isn't enough -- we could easily have more than
1,000,000 or so objects created in a session. The answer is
(a) It doesn't really matter if we overflow the uid field because
it's only used for debugging, to identify an object uniquely
(or pretty much so).
(b) If we cared about it overflowing and wanted to reduce this,
we could make it so that cons, string, float and certain other
frob-block types that never print out the uid simply don't
store a uid in them and don't increment the lrecord_uid_counter.
(4) In conjunction with (3), create new macro NORMAL_LISP_OBJECT_UID()
and use it to abstract out the differences between NEWGC and old-GC
in accessing the `uid' value from a "normal Lisp Object pointer".
(5) In events.c, use zero_nonsized_lisp_object() in place of custom-
written equivalent. In font-mgr.c use external_object_printer()
in place of custom-written equivalents.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sat, 13 Mar 2010 05:38:08 -0600 |
| parents | 576fb035e263 |
| children |
| rev | line source |
|---|---|
| 428 | 1 @c -*-texinfo-*- |
| 2 @c This is part of the XEmacs Lisp Reference Manual. | |
| 444 | 3 @c Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc. |
| 428 | 4 @c See the file lispref.texi for copying conditions. |
| 5 @setfilename ../../info/errors.info | |
| 6 @node Standard Errors, Standard Buffer-Local Variables, Building XEmacs and Object Allocation, Top | |
| 7 @appendix Standard Errors | |
| 8 | |
| 9 Here is the complete list of the error symbols in standard Emacs, | |
| 10 grouped by concept. The list includes each symbol's message (on the | |
| 11 @code{error-message} property of the symbol) and a cross reference to a | |
| 12 description of how the error can occur. | |
| 13 | |
| 14 Each error symbol has an @code{error-conditions} property that is a | |
| 15 list of symbols. Normally this list includes the error symbol itself | |
| 16 and the symbol @code{error}. Occasionally it includes additional | |
| 17 symbols, which are intermediate classifications, narrower than | |
| 18 @code{error} but broader than a single error symbol. For example, all | |
| 19 the errors in accessing files have the condition @code{file-error}. | |
| 20 | |
| 21 As a special exception, the error symbol @code{quit} does not have the | |
| 22 condition @code{error}, because quitting is not considered an error. | |
| 23 | |
| 24 @xref{Errors}, for an explanation of how errors are generated and | |
| 25 handled. | |
| 26 | |
| 27 @table @code | |
| 28 @item @var{symbol} | |
| 29 @var{string}; @var{reference}. | |
| 30 | |
| 31 @item error | |
| 32 @code{"error"}@* | |
| 33 @xref{Errors}. | |
| 34 | |
| 35 @item quit | |
| 36 @code{"Quit"}@* | |
| 37 @xref{Quitting}. | |
| 38 | |
| 39 @item args-out-of-range | |
| 40 @code{"Args out of range"}@* | |
| 41 @xref{Sequences Arrays Vectors}. | |
| 42 | |
| 43 @item arith-error | |
| 44 @code{"Arithmetic error"}@* | |
| 45 See @code{/} and @code{%} in @ref{Numbers}. | |
| 46 | |
| 47 @item beginning-of-buffer | |
| 48 @code{"Beginning of buffer"}@* | |
| 49 @xref{Motion}. | |
| 50 | |
| 51 @item buffer-read-only | |
| 52 @code{"Buffer is read-only"}@* | |
| 53 @xref{Read Only Buffers}. | |
| 54 | |
| 55 @item cyclic-function-indirection | |
| 56 @code{"Symbol's chain of function indirections contains a loop"}@* | |
| 57 @xref{Function Indirection}. | |
| 58 | |
| 59 @c XEmacs feature | |
| 60 @item domain-error | |
| 61 @code{"Arithmetic domain error"}@* | |
| 62 | |
| 63 @item end-of-buffer | |
| 64 @code{"End of buffer"}@* | |
| 65 @xref{Motion}. | |
| 66 | |
| 67 @item end-of-file | |
| 68 @code{"End of file during parsing"}@* | |
| 69 This is not a @code{file-error}.@* | |
| 70 @xref{Input Functions}. | |
| 71 | |
| 72 @item file-error | |
| 73 This error and its subcategories do not have error-strings, because the | |
| 74 error message is constructed from the data items alone when the error | |
| 75 condition @code{file-error} is present.@* | |
| 76 @xref{Files}. | |
| 77 | |
| 444 | 78 @item file-locked |
| 428 | 79 This is a @code{file-error}.@* |
| 80 @xref{File Locks}. | |
| 81 | |
| 82 @item file-already-exists | |
| 83 This is a @code{file-error}.@* | |
| 84 @xref{Writing to Files}. | |
| 85 | |
| 86 @item file-supersession | |
| 87 This is a @code{file-error}.@* | |
| 88 @xref{Modification Time}. | |
| 89 | |
| 90 @item invalid-byte-code | |
| 91 @code{"Invalid byte code"}@* | |
| 92 @xref{Byte Compilation}. | |
| 93 | |
| 94 @item invalid-function | |
| 95 @code{"Invalid function"}@* | |
| 96 @xref{Classifying Lists}. | |
| 97 | |
| 98 @item invalid-read-syntax | |
| 99 @code{"Invalid read syntax"}@* | |
| 100 @xref{Input Functions}. | |
| 101 | |
| 102 @item invalid-regexp | |
| 103 @code{"Invalid regexp"}@* | |
| 104 @xref{Regular Expressions}. | |
| 105 | |
| 106 @c XEmacs feature | |
| 107 @item mark-inactive | |
| 108 @code{"The mark is not active now"}@* | |
| 109 | |
| 110 @item no-catch | |
| 111 @code{"No catch for tag"}@* | |
| 112 @xref{Catch and Throw}. | |
| 113 | |
| 114 @c XEmacs feature | |
| 115 @item overflow-error | |
| 116 @code{"Arithmetic overflow error"}@* | |
| 117 | |
| 118 @c XEmacs feature | |
| 119 @item protected-field | |
| 120 @code{"Attempt to modify a protected field"}@* | |
| 121 | |
| 122 @c XEmacs feature | |
| 123 @item range-error | |
| 124 @code{"Arithmetic range error"}@* | |
| 125 | |
| 126 @item search-failed | |
| 127 @code{"Search failed"}@* | |
| 128 @xref{Searching and Matching}. | |
| 129 | |
| 130 @item setting-constant | |
| 444 | 131 @code{"Attempt to set a constant symbol"}@* |
| 428 | 132 @xref{Constant Variables, , Variables that Never Change}. |
| 133 | |
| 134 @c XEmacs feature | |
| 135 @item singularity-error | |
| 136 @code{"Arithmetic singularity error"}@* | |
| 137 | |
| 138 @c XEmacs feature | |
| 139 @item tooltalk-error | |
| 140 @code{"ToolTalk error"}@* | |
| 141 @xref{ToolTalk Support}. | |
| 142 | |
| 143 @c XEmacs feature | |
| 144 @item undefined-keystroke-sequence | |
| 145 @code{"Undefined keystroke sequence"}@* | |
| 146 | |
| 147 @ignore FSF Emacs only | |
| 148 @item undefined-color | |
| 149 @code{"Undefined color"}@* | |
| 150 @xref{Color Names}. | |
| 151 @end ignore | |
| 152 | |
| 153 @item void-function | |
| 154 @code{"Symbol's function definition is void"}@* | |
| 155 @xref{Function Cells}. | |
| 156 | |
| 157 @item void-variable | |
| 158 @code{"Symbol's value as variable is void"}@* | |
| 159 @xref{Accessing Variables}. | |
| 160 | |
| 161 @item wrong-number-of-arguments | |
| 162 @code{"Wrong number of arguments"}@* | |
| 163 @xref{Classifying Lists}. | |
| 164 | |
| 165 @item wrong-type-argument | |
| 166 @code{"Wrong type argument"}@* | |
| 167 @xref{Type Predicates}. | |
| 168 @end table | |
| 169 | |
| 170 These error types, which are all classified as special cases of | |
| 171 @code{arith-error}, can occur on certain systems for invalid use of | |
| 172 mathematical functions. | |
| 173 | |
| 174 @table @code | |
| 175 @item domain-error | |
| 176 @code{"Arithmetic domain error"}@* | |
| 177 @xref{Math Functions}. | |
| 178 | |
| 179 @item overflow-error | |
| 180 @code{"Arithmetic overflow error"}@* | |
| 181 @xref{Math Functions}. | |
| 182 | |
| 183 @item range-error | |
| 184 @code{"Arithmetic range error"}@* | |
| 185 @xref{Math Functions}. | |
| 186 | |
| 187 @item singularity-error | |
| 188 @code{"Arithmetic singularity error"}@* | |
| 189 @xref{Math Functions}. | |
| 190 | |
| 191 @item underflow-error | |
| 192 @code{"Arithmetic underflow error"}@* | |
| 193 @xref{Math Functions}. | |
| 194 @end table |