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d614e4a8cd
Eliminate the category of miscellaneous objects, and turn all such objects into pseudovectors. The immediate motivation for this change is to free up an enum Lisp_Type tag value, a scarce resource that can be better used elsewhere. However, this change is worthwhile in its own right, as it improves performance slightly on my platform, 0.3% faster for 'make compile-always' on Fedora 28, and it simplifies the garbage collector and interpreter (Bug#32405). * doc/lispref/internals.texi (Garbage Collection): * etc/NEWS: Document change to garbage-collect return value. * src/alloc.c (total_markers, total_free_markers): (union aligned_Lisp_Misc, MARKER_BLOCK_SIZE) (struct marker_block, marker_block, marker_block_index) (misc_free_list, allocate_misc, live_misc_holding) (live_misc_p, sweep_misc): * src/lisp.h (lisp_h_MARKERP, lisp_h_MISCP, MARKERP, MISCP) (Lisp_Misc, enum Lisp_Misc_Type, Lisp_Misc_Free) (Lisp_Misc_Marker, Lisp_Misc_Overlay, Lisp_Misc_Finalizer) (Lisp_Misc_Ptr, Lisp_Misc_User_Ptr, Lisp_Misc_Limit) (Lisp_Misc_Bignum) (XSETMISC, struct Lisp_Misc_Any, XMISCANY, XMISCTYPE) (struct Lisp_Free, union Lisp_Misc, XMISC): Remove. All uses removed. (cleanup_vector): Clean up objects that were formerly misc and are now pseudovectors. (make_misc_ptr, build_overlay, Fmake_marker, build_marker) (make_bignum_str, make_number, make_pure_bignum) (make_user_ptr, Fmake_finalizer): Build as pseudovectors, not as misc objects. (mark_finalizer_list, queue_doomed_finalizers) (compact_undo_list, mark_overlay, mark_object) (unchain_dead_markers): Mark as vector-like objects, not as misc objects. (mark_maybe_object, mark_maybe_pointer, valid_lisp_object_p) (total_bytes_of_live_objects, survives_gc_p): * src/fns.c (sxhash): No need to worry about misc objects. (garbage_collect_1): Do not generate a 'misc' component. (syms_of_alloc): No need for 'misc' symbol. * src/buffer.c (overlays_at, overlays_in, overlay_touches_p) (overlay_strings, recenter_overlay_lists) (fix_start_end_in_overlays, fix_overlays_before) (Foverlay_lists, report_overlay_modification) (evaporate_overlays): * src/editfns.c (overlays_around): * src/data.c (Ftype_of): * src/fns.c (internal_equal): * src/lisp.h (mint_ptrp, xmint_pointer, FINALIZERP) (XFINALIZER, MARKERP, XMARKER, OVERLAYP, XOVERLAY, USER_PTRP) (XUSER_PTR, BIGNUMP, XBIGNUM): * src/print.c (print_vectorlike, print_object): * src/undo.c (record_marker_adjustments): * src/xdisp.c (load_overlay_strings): Formerly misc objects are now pseudovectors. * src/lisp.h (PVEC_MARKER, PVEC_OVERLAY, PVEC_FINALIZER) (PVEC_BIGNUM, PVEC_MISC_PTR, PVEC_USER_PTR): New constants, replacing their misc versions. All uses changed. (struct Lisp_Marker, struct Lisp_Overlay, struct Lisp_Misc_Ptr) (struct Lisp_Bignum, struct Lisp_User_Ptr, struct Lisp_Finalizer): Make usable as a pseudovector by using a pseudovector header, replacing any DIY components, and putting Lisp_Object members first. All uses changed. |
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| .. | ||
| abbrevs.texi | ||
| anti.texi | ||
| back.texi | ||
| backups.texi | ||
| book-spine.texi | ||
| buffers.texi | ||
| ChangeLog.1 | ||
| commands.texi | ||
| compile.texi | ||
| control.texi | ||
| customize.texi | ||
| debugging.texi | ||
| display.texi | ||
| doclicense.texi | ||
| edebug.texi | ||
| elisp.texi | ||
| errors.texi | ||
| eval.texi | ||
| files.texi | ||
| frames.texi | ||
| functions.texi | ||
| gpl.texi | ||
| hash.texi | ||
| help.texi | ||
| hooks.texi | ||
| index.texi | ||
| internals.texi | ||
| intro.texi | ||
| keymaps.texi | ||
| lay-flat.texi | ||
| lists.texi | ||
| loading.texi | ||
| macros.texi | ||
| Makefile.in | ||
| maps.texi | ||
| markers.texi | ||
| minibuf.texi | ||
| modes.texi | ||
| nonascii.texi | ||
| numbers.texi | ||
| objects.texi | ||
| os.texi | ||
| package.texi | ||
| positions.texi | ||
| processes.texi | ||
| README | ||
| records.texi | ||
| searching.texi | ||
| sequences.texi | ||
| spellfile | ||
| streams.texi | ||
| strings.texi | ||
| symbols.texi | ||
| syntax.texi | ||
| text.texi | ||
| threads.texi | ||
| tips.texi | ||
| two-volume-cross-refs.txt | ||
| two-volume.make | ||
| variables.texi | ||
| windows.texi | ||
Copyright (C) 2001-2018 Free Software Foundation, Inc. -*- outline -*-
See the end of the file for license conditions.
README for the Emacs Lisp Reference Manual.
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