Commit 3b48f995 authored by Dmitry Antipov's avatar Dmitry Antipov

Tune pseudovector allocation assuming Qnil == 0

* alloc.c (allocate_pseudovector): Use memset for both
Lisp_Objects and regular slots.  Add zerolen arg.
* lisp.h (allocate_pseudovector): Adjust prototype.
(ALLOCATE_PSEUDOVECTOR): Adjust user.
(ALLOCATE_ZEROED_PSEUDOVECTOR): New macro.
(allocate_hash_table, allocate_window, allocate_frame)
(allocate_process, allocate_terminal): Remove prototypes.
* fns.c (allocate_hash_table): Now static here.
* frame.c (allocate_frame):
* process.c (allocate_process):
* terminal.c (allocate_terminal):
* window.c (allocate_window): Now static here.
Use ALLOCATE_ZEROED_PSEUDOVECTOR.  Add comment.
parent 0ecb1eb9
2015-01-16 Dmitry Antipov <dmantipov@yandex.ru>
Tune pseudovector allocation assuming Qnil == 0.
* alloc.c (allocate_pseudovector): Use memset for both
Lisp_Objects and regular slots. Add zerolen arg.
* lisp.h (allocate_pseudovector): Adjust prototype.
(ALLOCATE_PSEUDOVECTOR): Adjust user.
(ALLOCATE_ZEROED_PSEUDOVECTOR): New macro.
(allocate_hash_table, allocate_window, allocate_frame)
(allocate_process, allocate_terminal): Remove prototypes.
* fns.c (allocate_hash_table): Now static here.
* frame.c (allocate_frame):
* process.c (allocate_process):
* terminal.c (allocate_terminal):
* window.c (allocate_window): Now static here.
Use ALLOCATE_ZEROED_PSEUDOVECTOR. Add comment.
2015-01-16 Paul Eggert <eggert@cs.ucla.edu>
Give up on -Wsuggest-attribute=const
......
......@@ -3163,19 +3163,19 @@ allocate_vector (EMACS_INT len)
/* Allocate other vector-like structures. */
struct Lisp_Vector *
allocate_pseudovector (int memlen, int lisplen, enum pvec_type tag)
allocate_pseudovector (int memlen, int lisplen,
int zerolen, enum pvec_type tag)
{
struct Lisp_Vector *v = allocate_vectorlike (memlen);
int i;
/* Catch bogus values. */
eassert (tag <= PVEC_FONT);
eassert (memlen - lisplen <= (1 << PSEUDOVECTOR_REST_BITS) - 1);
eassert (lisplen <= (1 << PSEUDOVECTOR_SIZE_BITS) - 1);
/* Only the first lisplen slots will be traced normally by the GC. */
for (i = 0; i < lisplen; ++i)
v->contents[i] = Qnil;
/* Only the first lisplen slots will be traced normally by the GC.
But since Qnil == 0, we can memset Lisp_Object slots as well. */
memset (v->contents, 0, zerolen * word_size);
XSETPVECTYPESIZE (v, tag, lisplen, memlen - lisplen);
return v;
......@@ -3194,60 +3194,6 @@ allocate_buffer (void)
return b;
}
struct Lisp_Hash_Table *
allocate_hash_table (void)
{
return ALLOCATE_PSEUDOVECTOR (struct Lisp_Hash_Table, count, PVEC_HASH_TABLE);
}
struct window *
allocate_window (void)
{
struct window *w;
w = ALLOCATE_PSEUDOVECTOR (struct window, current_matrix, PVEC_WINDOW);
/* Users assumes that non-Lisp data is zeroed. */
memset (&w->current_matrix, 0,
sizeof (*w) - offsetof (struct window, current_matrix));
return w;
}
struct terminal *
allocate_terminal (void)
{
struct terminal *t;
t = ALLOCATE_PSEUDOVECTOR (struct terminal, next_terminal, PVEC_TERMINAL);
/* Users assumes that non-Lisp data is zeroed. */
memset (&t->next_terminal, 0,
sizeof (*t) - offsetof (struct terminal, next_terminal));
return t;
}
struct frame *
allocate_frame (void)
{
struct frame *f;
f = ALLOCATE_PSEUDOVECTOR (struct frame, face_cache, PVEC_FRAME);
/* Users assumes that non-Lisp data is zeroed. */
memset (&f->face_cache, 0,
sizeof (*f) - offsetof (struct frame, face_cache));
return f;
}
struct Lisp_Process *
allocate_process (void)
{
struct Lisp_Process *p;
p = ALLOCATE_PSEUDOVECTOR (struct Lisp_Process, pid, PVEC_PROCESS);
/* Users assumes that non-Lisp data is zeroed. */
memset (&p->pid, 0,
sizeof (*p) - offsetof (struct Lisp_Process, pid));
return p;
}
DEFUN ("make-vector", Fmake_vector, Smake_vector, 2, 2, 0,
doc: /* Return a newly created vector of length LENGTH, with each element being INIT.
See also the function `vector'. */)
......
......@@ -3814,6 +3814,15 @@ hashfn_user_defined (struct hash_table_test *ht, Lisp_Object key)
return hashfn_eq (ht, hash);
}
/* Allocate basically initialized hash table. */
static struct Lisp_Hash_Table *
allocate_hash_table (void)
{
return ALLOCATE_PSEUDOVECTOR (struct Lisp_Hash_Table,
count, PVEC_HASH_TABLE);
}
/* An upper bound on the size of a hash table index. It must fit in
ptrdiff_t and be a valid Emacs fixnum. */
#define INDEX_SIZE_BOUND \
......
......@@ -156,7 +156,7 @@ font_make_spec (void)
struct font_spec *spec
= ((struct font_spec *)
allocate_pseudovector (VECSIZE (struct font_spec),
FONT_SPEC_MAX, PVEC_FONT));
FONT_SPEC_MAX, FONT_SPEC_MAX, PVEC_FONT));
XSETFONT (font_spec, spec);
return font_spec;
}
......@@ -168,7 +168,7 @@ font_make_entity (void)
struct font_entity *entity
= ((struct font_entity *)
allocate_pseudovector (VECSIZE (struct font_entity),
FONT_ENTITY_MAX, PVEC_FONT));
FONT_ENTITY_MAX, FONT_ENTITY_MAX, PVEC_FONT));
XSETFONT (font_entity, entity);
return font_entity;
}
......@@ -181,7 +181,8 @@ font_make_object (int size, Lisp_Object entity, int pixelsize)
{
Lisp_Object font_object;
struct font *font
= (struct font *) allocate_pseudovector (size, FONT_OBJECT_MAX, PVEC_FONT);
= (struct font *) allocate_pseudovector (size, FONT_OBJECT_MAX,
FONT_OBJECT_MAX, PVEC_FONT);
int i;
/* GC can happen before the driver is set up,
......
......@@ -570,6 +570,13 @@ adjust_frame_size (struct frame *f, int new_width, int new_height, int inhibit,
run_window_configuration_change_hook (f);
}
/* Allocate basically initialized frame. */
static struct frame *
allocate_frame (void)
{
return ALLOCATE_ZEROED_PSEUDOVECTOR (struct frame, face_cache, PVEC_FRAME);
}
struct frame *
make_frame (bool mini_p)
......
......@@ -3780,16 +3780,25 @@ make_uninit_sub_char_table (int depth, int min_char)
return v;
}
extern struct Lisp_Vector *allocate_pseudovector (int, int, enum pvec_type);
#define ALLOCATE_PSEUDOVECTOR(typ,field,tag) \
((typ*) \
allocate_pseudovector \
(VECSIZE (typ), PSEUDOVECSIZE (typ, field), tag))
extern struct Lisp_Hash_Table *allocate_hash_table (void);
extern struct window *allocate_window (void);
extern struct frame *allocate_frame (void);
extern struct Lisp_Process *allocate_process (void);
extern struct terminal *allocate_terminal (void);
extern struct Lisp_Vector *allocate_pseudovector (int, int, int,
enum pvec_type);
/* Allocate partially initialized pseudovector where all Lisp_Object
slots are set to Qnil but the rest (if any) is left uninitialized. */
#define ALLOCATE_PSEUDOVECTOR(type, field, tag) \
((type *) allocate_pseudovector (VECSIZE (type), \
PSEUDOVECSIZE (type, field), \
PSEUDOVECSIZE (type, field), tag))
/* Allocate fully initialized pseudovector where all Lisp_Object
slots are set to Qnil and the rest (if any) is zeroed. */
#define ALLOCATE_ZEROED_PSEUDOVECTOR(type, field, tag) \
((type *) allocate_pseudovector (VECSIZE (type), \
PSEUDOVECSIZE (type, field), \
VECSIZE (type), tag))
extern bool gc_in_progress;
extern bool abort_on_gc;
extern Lisp_Object make_float (double);
......
......@@ -687,7 +687,15 @@ allocate_pty (char pty_name[PTY_NAME_SIZE])
#endif /* HAVE_PTYS */
return -1;
}
/* Allocate basically initialized process. */
static struct Lisp_Process *
allocate_process (void)
{
return ALLOCATE_ZEROED_PSEUDOVECTOR (struct Lisp_Process, pid, PVEC_PROCESS);
}
static Lisp_Object
make_process (Lisp_Object name)
{
......
......@@ -254,6 +254,15 @@ get_named_terminal (const char *name)
return NULL;
}
/* Allocate basically initialized terminal. */
static struct terminal *
allocate_terminal (void)
{
return ALLOCATE_ZEROED_PSEUDOVECTOR
(struct terminal, next_terminal, PVEC_TERMINAL);
}
/* Create a new terminal object of TYPE and add it to the terminal list. RIF
may be NULL if this terminal type doesn't support window-based redisplay. */
......
......@@ -3642,7 +3642,16 @@ temp_output_buffer_show (register Lisp_Object buf)
}
}
}
/* Allocate basically initialized window. */
static struct window *
allocate_window (void)
{
return ALLOCATE_ZEROED_PSEUDOVECTOR
(struct window, current_matrix, PVEC_WINDOW);
}
/* Make new window, have it replace WINDOW in window-tree, and make
WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only
horizontal child). */
......
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