#ifndef EMACS_LISP_H
#define EMACS_LISP_H
+#include <setjmp.h>
#include <stdalign.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
+#include <float.h>
#include <inttypes.h>
#include <limits.h>
#define XFLOAT_DATA(f) (0 ? XFLOAT (f)->u.data : XFLOAT (f)->u.data)
#define XFLOAT_INIT(f, n) (XFLOAT (f)->u.data = (n))
+/* Most hosts nowadays use IEEE floating point, so they use IEC 60559
+ representations, have infinities and NaNs, and do not trap on
+ exceptions. Define IEEE_FLOATING_POINT if this host is one of the
+ typical ones. The C11 macro __STDC_IEC_559__ is close to what is
+ wanted here, but is not quite right because Emacs does not require
+ all the features of C11 Annex F (and does not require C11 at all,
+ for that matter). */
+#define IEEE_FLOATING_POINT (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \
+ && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128)
+
/* A character, declared with the following typedef, is a member
of some character set associated with the current buffer. */
#ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */
static struct Lisp_Kboard_Objfwd ko_fwd; \
defvar_kboard (&ko_fwd, lname, offsetof (KBOARD, vname ## _)); \
} while (0)
-
+\f
+/* Save and restore the instruction and environment pointers,
+ without affecting the signal mask. */
+
+#ifdef HAVE__SETJMP
+typedef jmp_buf sys_jmp_buf;
+# define sys_setjmp(j) _setjmp (j)
+# define sys_longjmp(j, v) _longjmp (j, v)
+#elif defined HAVE_SIGSETJMP
+typedef sigjmp_buf sys_jmp_buf;
+# define sys_setjmp(j) sigsetjmp (j, 0)
+# define sys_longjmp(j, v) siglongjmp (j, v)
+#else
+/* A platform that uses neither _longjmp nor siglongjmp; assume
+ longjmp does not affect the sigmask. */
+typedef jmp_buf sys_jmp_buf;
+# define sys_setjmp(j) setjmp (j)
+# define sys_longjmp(j, v) longjmp (j, v)
+#endif
\f
/* Structure for recording Lisp call stack for backtrace purposes. */
#define SPECPDL_INDEX() (specpdl_ptr - specpdl)
-/* Everything needed to describe an active condition case. */
+struct backtrace
+{
+ struct backtrace *next;
+ Lisp_Object function;
+ Lisp_Object *args; /* Points to vector of args. */
+ ptrdiff_t nargs; /* Length of vector. */
+ /* Nonzero means call value of debugger when done with this operation. */
+ unsigned int debug_on_exit : 1;
+};
+
+extern struct backtrace *backtrace_list;
+
+/* Everything needed to describe an active condition case.
+
+ Members are volatile if their values need to survive _longjmp when
+ a 'struct handler' is a local variable. */
struct handler
{
/* The handler clauses and variable from the condition-case form. */
error: handle all conditions, and errors can run the debugger
or display a backtrace. */
Lisp_Object handler;
- Lisp_Object var;
+
+ Lisp_Object volatile var;
+
/* Fsignal stores here the condition-case clause that applies,
and Fcondition_case thus knows which clause to run. */
- Lisp_Object chosen_clause;
+ Lisp_Object volatile chosen_clause;
/* Used to effect the longjump out to the handler. */
struct catchtag *tag;
of the catch form.
All the other members are concerned with restoring the interpreter
- state. */
+ state.
+ Members are volatile if their values need to survive _longjmp when
+ a 'struct catchtag' is a local variable. */
struct catchtag
{
Lisp_Object tag;
- Lisp_Object val;
- struct catchtag *next;
+ Lisp_Object volatile val;
+ struct catchtag *volatile next;
struct gcpro *gcpro;
- jmp_buf jmp;
+ sys_jmp_buf jmp;
struct backtrace *backlist;
struct handler *handlerlist;
EMACS_INT lisp_eval_depth;
- ptrdiff_t pdlcount;
+ ptrdiff_t volatile pdlcount;
int poll_suppress_count;
int interrupt_input_blocked;
struct byte_stack *byte_stack;
If quit-flag is set to `kill-emacs' the SIGINT handler has received
a request to exit Emacs when it is safe to do. */
-#ifdef SYNC_INPUT
extern void process_pending_signals (void);
-extern int pending_signals;
-#define ELSE_PENDING_SIGNALS \
- else if (pending_signals) \
- process_pending_signals ();
-#else /* not SYNC_INPUT */
-#define ELSE_PENDING_SIGNALS
-#endif /* not SYNC_INPUT */
+extern bool volatile pending_signals;
extern void process_quit_flag (void);
#define QUIT \
do { \
if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \
process_quit_flag (); \
- ELSE_PENDING_SIGNALS \
+ else if (pending_signals) \
+ process_pending_signals (); \
} while (0)
extern Lisp_Object do_symval_forwarding (union Lisp_Fwd *);
extern void set_internal (Lisp_Object, Lisp_Object, Lisp_Object, bool);
extern void syms_of_data (void);
-extern void init_data (void);
extern void swap_in_global_binding (struct Lisp_Symbol *);
/* Defined in cmds.c */
extern Lisp_Object QCascent, QCmargin, QCrelief;
extern Lisp_Object QCconversion;
extern int x_bitmap_mask (struct frame *, ptrdiff_t);
+extern void reset_image_types (void);
extern void syms_of_image (void);
/* Defined in insdel.c. */
/* Defined in alloc.c. */
extern void check_pure_size (void);
extern void allocate_string_data (struct Lisp_String *, EMACS_INT, EMACS_INT);
-extern void reset_malloc_hooks (void);
-extern void uninterrupt_malloc (void);
extern void malloc_warning (const char *);
extern _Noreturn void memory_full (size_t);
extern _Noreturn void buffer_memory_full (ptrdiff_t);
extern Lisp_Object pure_cons (Lisp_Object, Lisp_Object);
extern void make_byte_code (struct Lisp_Vector *);
+extern Lisp_Object Qautomatic_gc;
extern Lisp_Object Qchar_table_extra_slots;
extern struct Lisp_Vector *allocate_vector (EMACS_INT);
extern struct Lisp_Vector *allocate_pseudovector (int memlen, int lisplen, int tag);
extern Lisp_Object Vautoload_queue;
extern Lisp_Object Vsignaling_function;
extern Lisp_Object inhibit_lisp_code;
-extern int handling_signal;
#if BYTE_MARK_STACK
extern struct catchtag *catchlist;
extern struct handler *handlerlist;
extern Lisp_Object menu_bar_items (Lisp_Object);
extern Lisp_Object tool_bar_items (Lisp_Object, int *);
extern void discard_mouse_events (void);
+#ifdef USABLE_SIGIO
+void handle_input_available_signal (int);
+#endif
extern Lisp_Object pending_funcalls;
extern int detect_input_pending (void);
extern int detect_input_pending_ignore_squeezables (void);
/* Defined in indent.c. */
extern ptrdiff_t current_column (void);
extern void invalidate_current_column (void);
-extern int indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT);
+extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT);
extern void syms_of_indent (void);
/* Defined in frame.c. */
extern Lisp_Object decode_env_path (const char *, const char *);
extern Lisp_Object empty_unibyte_string, empty_multibyte_string;
extern Lisp_Object Qfile_name_handler_alist;
-extern _Noreturn void fatal_error_backtrace (int, int);
+extern _Noreturn void terminate_due_to_signal (int, int);
extern Lisp_Object Qkill_emacs;
+#ifdef WINDOWSNT
+extern Lisp_Object Vlibrary_cache;
+#endif
#if HAVE_SETLOCALE
void fixup_locale (void);
void synchronize_system_messages_locale (void);
extern void reset_sys_modes (struct tty_display_info *);
extern void init_all_sys_modes (void);
extern void reset_all_sys_modes (void);
-extern void wait_for_termination (pid_t);
-extern void interruptible_wait_for_termination (pid_t);
extern void flush_pending_output (int) ATTRIBUTE_CONST;
extern void child_setup_tty (int);
extern void setup_pty (int);
void syms_of_dbusbind (void);
#endif
+
+/* Defined in profiler.c. */
+extern bool profiler_memory_running;
+extern void malloc_probe (size_t);
+extern void syms_of_profiler (void);
+
+
#ifdef DOS_NT
/* Defined in msdos.c, w32.c. */
extern char *emacs_root_dir (void);