/* Fundamental definitions for GNU Emacs Lisp interpreter.
-Copyright (C) 1985-1987, 1993-1995, 1997-2012 Free Software Foundation, Inc.
+Copyright (C) 1985-1987, 1993-1995, 1997-2013 Free Software Foundation,
+Inc.
This file is part of GNU Emacs.
members that are accessible only from C. A Lisp_Misc object is a
wrapper for a C struct that can contain anything you like.
+ Explicit freeing is discouraged for Lisp objects in general. But if
+ you really need to exploit this, use Lisp_Misc (check free_misc in
+ alloc.c to see why). There is no way to free a vectorlike object.
+
To add a new pseudovector type, extend the pvec_type enumeration;
to add a new Lisp_Misc, extend the Lisp_Misc_Type enumeration.
enumeration and a 1-bit GC markbit) and make sure the overall size
of the union is not increased by your addition.
+ For a new pseudovector, it's highly desirable to limit the size
+ of your data type by VBLOCK_BYTES_MAX bytes (defined in alloc.c).
+ Otherwise you will need to change sweep_vectors (also in alloc.c).
+
Then you will need to add switch branches in print.c (in
print_object, to print your object, and possibly also in
print_preprocess) and to alloc.c, to mark your object (in
union Lisp_Fwd *fwd;
} val;
- /* Function value of the symbol or Qunbound if not fboundp. */
+ /* Function value of the symbol or Qnil if not fboundp. */
Lisp_Object function;
/* The symbol's property list. */
Lisp_Object plist;
};
-/* Hold a C pointer for later use.
- This type of object is used in the arg to record_unwind_protect. */
+/* Types of data which may be saved in a Lisp_Save_Value. */
+
+enum
+ {
+ SAVE_UNUSED,
+ SAVE_INTEGER,
+ SAVE_POINTER,
+ SAVE_OBJECT
+ };
+
+/* Special object used to hold a different values for later use. */
+
struct Lisp_Save_Value
{
ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Save_Value */
unsigned gcmarkbit : 1;
- int spacer : 14;
- /* If DOGC is set, POINTER is the address of a memory
- area containing INTEGER potential Lisp_Objects. */
- unsigned int dogc : 1;
- void *pointer;
- ptrdiff_t integer;
+ int spacer : 6;
+ /* If `area' is nonzero, `data[0].pointer' is the address of a memory area
+ containing `data[1].integer' potential Lisp_Objects. The rest of `data'
+ fields are unused. */
+ unsigned area : 1;
+ /* If `area' is zero, `data[N]' may hold different objects which type is
+ encoded in `typeN' fields as described by the anonymous enum above.
+ E.g. if `type0' is SAVE_INTEGER, `data[0].integer' is in use. */
+ unsigned type0 : 2;
+ unsigned type1 : 2;
+ unsigned type2 : 2;
+ unsigned type3 : 2;
+ union {
+ void *pointer;
+ ptrdiff_t integer;
+ Lisp_Object object;
+ } data[4];
};
+/* Compatibility macro to set and extract saved pointer. */
+
+#define XSAVE_POINTER(obj) XSAVE_VALUE (obj)->data[0].pointer
+
+/* Likewise for the saved integer. */
+
+#define XSAVE_INTEGER(obj) XSAVE_VALUE (obj)->data[1].integer
+
+/* Macro to extract Nth saved object. */
+
+#define XSAVE_OBJECT(obj, n) \
+ (eassert (XSAVE_VALUE (obj)->type ## n == SAVE_OBJECT), \
+ XSAVE_VALUE (obj)->data[n].object)
/* A miscellaneous object, when it's on the free list. */
struct Lisp_Free
{
enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Buffer_Obj */
int offset;
- Lisp_Object slottype; /* Qnil, Lisp_Int, Lisp_Symbol, or Lisp_String. */
+ /* One of Qnil, Qintegerp, Qsymbolp, Qstringp, Qfloatp or Qnumberp. */
+ Lisp_Object predicate;
};
/* struct Lisp_Buffer_Local_Value is used in a symbol value cell when
int mouse_face_beg_x, mouse_face_beg_y;
int mouse_face_end_row, mouse_face_end_col;
int mouse_face_end_x, mouse_face_end_y;
- int mouse_face_past_end;
Lisp_Object mouse_face_window;
int mouse_face_face_id;
Lisp_Object mouse_face_overlay;
- /* 1 if a mouse motion event came and we didn't handle it right away because
- gc was in progress. */
- int mouse_face_deferred_gc;
-
/* FRAME and X, Y position of mouse when last checked for
highlighting. X and Y can be negative or out of range for the frame. */
struct frame *mouse_face_mouse_frame;
int mouse_face_mouse_x, mouse_face_mouse_y;
+ /* Nonzero if part of the text currently shown in
+ its mouse-face is beyond the window end. */
+ unsigned mouse_face_past_end : 1;
+
/* Nonzero means defer mouse-motion highlighting. */
- int mouse_face_defer;
+ unsigned mouse_face_defer : 1;
/* Nonzero means that the mouse highlight should not be shown. */
- int mouse_face_hidden;
-
- int mouse_face_image_state;
+ unsigned mouse_face_hidden : 1;
} Mouse_HLInfo;
\f
/* Data type checking. */
2 Mark the stack, and check that everything GCPRO'd is
marked.
3 Mark using GCPRO's, mark stack last, and count how many
- dead objects are kept alive. */
+ dead objects are kept alive.
+ Formerly, method 0 was used. Currently, method 1 is used unless
+ otherwise specified by hand when building, e.g.,
+ "make CPPFLAGS='-DGC_MARK_STACK=GC_USE_GCPROS_AS_BEFORE'".
+ Methods 2 and 3 are present mainly to debug the transition from 0 to 1. */
#define GC_USE_GCPROS_AS_BEFORE 0
#define GC_MAKE_GCPROS_NOOPS 1
/* Defined in insdel.c. */
extern Lisp_Object Qinhibit_modification_hooks;
-extern void move_gap (ptrdiff_t);
extern void move_gap_both (ptrdiff_t, ptrdiff_t);
extern _Noreturn void buffer_overflow (void);
extern void make_gap (ptrdiff_t);
+extern void make_gap_1 (struct buffer *, ptrdiff_t);
extern ptrdiff_t copy_text (const unsigned char *, unsigned char *,
ptrdiff_t, bool, bool);
extern int count_combining_before (const unsigned char *,
extern void del_range_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, bool);
extern Lisp_Object del_range_2 (ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t, bool);
-extern void modify_region (struct buffer *, ptrdiff_t, ptrdiff_t, bool);
+extern void modify_region_1 (ptrdiff_t, ptrdiff_t, bool);
extern void prepare_to_modify_buffer (ptrdiff_t, ptrdiff_t, ptrdiff_t *);
extern void signal_after_change (ptrdiff_t, ptrdiff_t, ptrdiff_t);
extern void adjust_after_insert (ptrdiff_t, ptrdiff_t, ptrdiff_t,
/* Defined in alloc.c. */
extern void check_pure_size (void);
+extern void free_misc (Lisp_Object);
extern void allocate_string_data (struct Lisp_String *, EMACS_INT, EMACS_INT);
extern void malloc_warning (const char *);
extern _Noreturn void memory_full (size_t);
extern Lisp_Object make_float (double);
extern void display_malloc_warning (void);
extern ptrdiff_t inhibit_garbage_collection (void);
+extern Lisp_Object format_save_value (const char *, ...);
extern Lisp_Object make_save_value (void *, ptrdiff_t);
+extern void free_save_value (Lisp_Object);
extern Lisp_Object build_overlay (Lisp_Object, Lisp_Object, Lisp_Object);
extern void free_marker (Lisp_Object);
extern void free_cons (struct Lisp_Cons *);
extern ptrdiff_t marker_position (Lisp_Object);
extern ptrdiff_t marker_byte_position (Lisp_Object);
extern void clear_charpos_cache (struct buffer *);
-extern ptrdiff_t charpos_to_bytepos (ptrdiff_t);
extern ptrdiff_t buf_charpos_to_bytepos (struct buffer *, ptrdiff_t);
extern ptrdiff_t buf_bytepos_to_charpos (struct buffer *, ptrdiff_t);
extern void unchain_marker (struct Lisp_Marker *marker);
extern Lisp_Object close_file_unwind (Lisp_Object);
extern Lisp_Object restore_point_unwind (Lisp_Object);
extern _Noreturn void report_file_error (const char *, Lisp_Object);
-extern void internal_delete_file (Lisp_Object);
+extern bool internal_delete_file (Lisp_Object);
+extern bool file_directory_p (const char *);
+extern bool file_accessible_directory_p (const char *);
extern void syms_of_fileio (void);
extern Lisp_Object make_temp_name (Lisp_Object, bool);
extern Lisp_Object Qdelete_file;
extern int read_bytecode_char (bool);
/* Defined in bytecode.c. */
-extern Lisp_Object Qbytecode;
extern void syms_of_bytecode (void);
extern struct byte_stack *byte_stack_list;
#if BYTE_MARK_STACK
extern void sys_subshell (void);
extern void sys_suspend (void);
extern void discard_tty_input (void);
+extern void block_tty_out_signal (void);
+extern void unblock_tty_out_signal (void);
extern void init_sys_modes (struct tty_display_info *);
extern void reset_sys_modes (struct tty_display_info *);
extern void init_all_sys_modes (void);
extern Lisp_Object Qfont_param;
#endif
+#ifdef WINDOWSNT
+/* Defined on w32notify.c. */
+extern void syms_of_w32notify (void);
+#endif
+
+/* Defined in inotify.c */
+#ifdef HAVE_INOTIFY
+extern void syms_of_inotify (void);
+#endif
+
/* Defined in xfaces.c. */
extern Lisp_Object Qdefault, Qtool_bar, Qfringe;
extern Lisp_Object Qheader_line, Qscroll_bar, Qcursor;
extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t);
extern char *xstrdup (const char *);
+extern void xputenv (const char *);
extern char *egetenv (const char *);
Lisp_Object arg_; \
buf = xmalloc ((nelt) * word_size); \
arg_ = make_save_value (buf, nelt); \
- XSAVE_VALUE (arg_)->dogc = 1; \
+ XSAVE_VALUE (arg_)->area = 1; \
sa_must_free = 1; \
record_unwind_protect (safe_alloca_unwind, arg_); \
} \
HCoop / bpt / emacs.git / blobdiff