>From 27a161e4060084ea093773be0716c10534847168 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Tue, 14 Aug 2018 12:07:09 -0700 Subject: [PATCH] Remove more traces of misc (Bug#32405) Remove misc-objects-consed and the misc component of memory-use-count, since misc objects no longer exist. * doc/lispref/internals.texi, etc/NEWS: Mention this, and adjust better to recent removal of misc objects. * src/alloc.c (MEM_TYPE_MISC): Remove; no longer used. (Fmemory_use_counts): Omit misc count, since miscs no longer exist. (misc-objects-consed): Remove. --- doc/lispref/internals.texi | 25 ++++++++----------------- etc/NEWS | 8 +++++--- src/alloc.c | 10 +--------- 3 files changed, 14 insertions(+), 29 deletions(-) diff --git a/doc/lispref/internals.texi b/doc/lispref/internals.texi index c72dbb5079..3fe28446ea 100644 --- a/doc/lispref/internals.texi +++ b/doc/lispref/internals.texi @@ -246,8 +246,8 @@ Garbage Collection @cindex vector-like objects, storage @cindex storage of vector-like Lisp objects - Beyond the basic vector, a lot of objects like window, buffer, and -frame are managed as if they were vectors. The corresponding C data + Beyond the basic vector, a lot of objects like markers, overlays and +buffers are managed as if they were vectors. The corresponding C data structures include the @code{union vectorlike_header} field whose @code{size} member contains the subtype enumerated by @code{enum pvec_type} and an information about how many @code{Lisp_Object} fields this structure @@ -579,6 +579,8 @@ Memory Usage @defvar vector-cells-consed The total number of vector cells that have been allocated so far in this Emacs session. +This includes vector-like objects such as markers and overlays, plus +certain objects not visible to users. @end defvar @defvar symbols-consed @@ -591,12 +593,6 @@ Memory Usage in this session. @end defvar -@defvar misc-objects-consed -The total number of miscellaneous objects that have been allocated so -far in this session. These include markers and overlays, plus -certain objects not visible to users. -@end defvar - @defvar intervals-consed The total number of intervals that have been allocated so far in this Emacs session. @@ -987,7 +983,7 @@ Object Internals In C, the tagged pointer is an object of type @code{Lisp_Object}. Any initialized variable of such a type always holds the value of one of the following basic data types: integer, symbol, string, cons cell, float, -vectorlike or miscellaneous object. Each of these data types has the +or vectorlike object. Each of these data types has the corresponding tag value. All tags are enumerated by @code{enum Lisp_Type} and placed into a 3-bit bitfield of the @code{Lisp_Object}. The rest of the bits is the value itself. Integers are immediate, i.e., directly @@ -1019,18 +1015,13 @@ Object Internals @item struct Lisp_Float Floating-point value. - -@item union Lisp_Misc -Miscellaneous kinds of objects which don't fit into any of the above. @end table These types are the first-class citizens of an internal type system. -Since the tag space is limited, all other types are the subtypes of either -@code{Lisp_Vectorlike} or @code{Lisp_Misc}. Vector subtypes are enumerated +Since the tag space is limited, all other types are the subtypes of +@code{Lisp_Vectorlike}. Vector subtypes are enumerated by @code{enum pvec_type}, and nearly all complex objects like windows, buffers, -frames, and processes fall into this category. The rest of special types, -including markers and overlays, are enumerated by @code{enum Lisp_Misc_Type} -and form the set of subtypes of @code{Lisp_Misc}. +frames, and processes fall into this category. Below there is a description of a few subtypes of @code{Lisp_Vectorlike}. Buffer object represents the text to display and edit. Window is the part diff --git a/etc/NEWS b/etc/NEWS index e381a546a9..f1d09a2b63 100644 --- a/etc/NEWS +++ b/etc/NEWS @@ -831,9 +831,11 @@ is backwards-compatible with versions of Emacs in which the old function exists. See the node "Displaying Buffers in Side Windows" in the ELisp manual for more details. -** The 'garbage-collect' function no longer returns a 'misc' component -because garbage collection no longer treats miscellaneous objects -specially; they are now allocated like any other pseudovector. +** garbage collection no longer treats miscellaneous objects specially; +they are now allocated like any other pseudovector. As a result, the +'garbage-collect' and 'memory-use-count' functions no longer return a +'misc' component, and the 'misc-objects-consed' variable has been +removed. * Lisp Changes in Emacs 27.1 diff --git a/src/alloc.c b/src/alloc.c index fb8a8c98b0..6a93821159 100644 --- a/src/alloc.c +++ b/src/alloc.c @@ -379,7 +379,6 @@ enum mem_type MEM_TYPE_BUFFER, MEM_TYPE_CONS, MEM_TYPE_STRING, - MEM_TYPE_MISC, MEM_TYPE_SYMBOL, MEM_TYPE_FLOAT, /* Since all non-bool pseudovectors are small enough to be @@ -7023,11 +7022,10 @@ Each of these counters increments for a certain kind of object. The counters wrap around from the largest positive integer to zero. Garbage collection does not decrease them. The elements of the value are as follows: - (CONSES FLOATS VECTOR-CELLS SYMBOLS STRING-CHARS MISCS INTERVALS STRINGS) + (CONSES FLOATS VECTOR-CELLS SYMBOLS STRING-CHARS INTERVALS STRINGS) All are in units of 1 = one object consed except for VECTOR-CELLS and STRING-CHARS, which count the total length of objects consed. -MISCS include overlays, markers, and some internal types. Frames, windows, buffers, and subprocesses count as vectors (but the contents of a buffer's text do not count here). */) (void) @@ -7038,7 +7036,6 @@ Frames, windows, buffers, and subprocesses count as vectors bounded_number (vector_cells_consed), bounded_number (symbols_consed), bounded_number (string_chars_consed), - bounded_number (misc_objects_consed), bounded_number (intervals_consed), bounded_number (strings_consed)); } @@ -7297,11 +7294,6 @@ If this portion is smaller than `gc-cons-threshold', this is ignored. */); DEFVAR_INT ("string-chars-consed", string_chars_consed, doc: /* Number of string characters that have been consed so far. */); - DEFVAR_INT ("misc-objects-consed", misc_objects_consed, - doc: /* Number of miscellaneous objects that have been consed so far. -These include markers and overlays, plus certain objects not visible -to users. */); - DEFVAR_INT ("intervals-consed", intervals_consed, doc: /* Number of intervals that have been consed so far. */); -- 2.17.1