Commit 222151aa authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

New misc type Lisp_Save_Value.

(enum Lisp_Misc_Type): Add Lisp_Misc_Save_Value.
(XSAVE_VALUE): New macro.
(struct Lisp_Save_Value): New data type.
(union Lisp_Misc): Add u_save_value alternative.
(make_save_value): Declared.
parent 42172a6b
......@@ -146,6 +146,7 @@ enum Lisp_Misc_Type
Lisp_Misc_Some_Buffer_Local_Value,
Lisp_Misc_Overlay,
Lisp_Misc_Kboard_Objfwd,
Lisp_Misc_Save_Value,
/* Currently floats are not a misc type,
but let's define this in case we want to change that. */
Lisp_Misc_Float,
......@@ -494,6 +495,7 @@ extern size_t pure_size;
#define XBUFFER_LOCAL_VALUE(a) (&(XMISC(a)->u_buffer_local_value))
#define XOVERLAY(a) (&(XMISC(a)->u_overlay))
#define XKBOARD_OBJFWD(a) (&(XMISC(a)->u_kboard_objfwd))
#define XSAVE_VALUE(a) (&(XMISC(a)->u_save_value))
/* Pseudovector types. */
......@@ -1232,6 +1234,16 @@ struct Lisp_Kboard_Objfwd
int offset;
};
/* Hold a C pointer for later use.
This type of object is used in the arg to record_unwind_protect. */
struct Lisp_Save_Value
{
int type : 16; /* = Lisp_Misc_Save_Value */
int spacer : 16;
void *pointer;
int integer;
};
/* To get the type field of a union Lisp_Misc, use XMISCTYPE.
It uses one of these struct subtypes to get the type field. */
......@@ -1247,6 +1259,7 @@ union Lisp_Misc
struct Lisp_Buffer_Local_Value u_buffer_local_value;
struct Lisp_Overlay u_overlay;
struct Lisp_Kboard_Objfwd u_kboard_objfwd;
struct Lisp_Save_Value u_save_value;
};
/* Lisp floating point type */
......@@ -2459,6 +2472,7 @@ extern int gc_in_progress;
extern Lisp_Object make_float P_ ((double));
extern void display_malloc_warning P_ ((void));
extern int inhibit_garbage_collection P_ ((void));
extern Lisp_Object make_save_value P_ ((void *, int));
extern void free_marker P_ ((Lisp_Object));
extern void free_cons P_ ((struct Lisp_Cons *));
extern void init_alloc_once P_ ((void));
......
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