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* Get rid of some platform-specific functions examining windowDmitry Antipov2013-04-071-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | system and its capabilities. This is a partial rework of the 2013-04-05 change. * lisp.h (have_menus_p): Remove prototype. This function is replaced with platform-independent window_system_available. (check_window_system): Move to... * frame.h (decode_window_system_frame, window_system_available): ...here, add new prototypes. * frame.c (window_system_available, decode_window_system_frame): New functions. (check_window_system): Platform-independent now. * xterm.h (x_in_use): Remove declaration. (check_x_frame): * w32term.h (check_x_frame): * nsterm.h (check_x_frame): Remove prototypes. This function is replaced with platform-independent decode_window_system_frame. * msdos.c (have_menus_p): Remove. * nsfns.m (check_window_system, have_menus_p, check_ns_frame): Remove platform-specific functions. Use check_window_system, decode_window_system_frame and check_ns_display_info where appropriate. Minor style and comment tweaks. * w32fns.c (w32_in_use, check_window_system, have_menus_p) (check_x_frame): Likewise. * xfns.c (x_in_use, check_window_system, have_menus_p, check_x_frame): Likewise. * fileio.c, fns.c, font.c, fontset.c, image.c, menu.c, nsmenu.m: * nsselect.m, nsterm.m, w32font.c, w32menu.c, xfaces.c, xgselect.c: * xmenu.c, xselect.c: All related users changed.
* Consistently use platform-specific function to detect window system.Dmitry Antipov2013-04-051-1/+1
| | | | | | | | | | | | | | | | | | * lisp.h (check_window_system): New prototype. This function is going to replace check_x, check_w32 and check_ns. (have_menus_p): Mention msdos.c in comment. * fontset.c (check_window_system_func): Remove. Adjust all users. * fontset.h (check_window_system_func): Remove prototype. * nsterm.h (check_ns): * xterm.h (check_x): * w32term.h (check_w32): Likewise. * menu.c (Fx_popup_menu): Use check_window_system. * msdos.c (check_window_system): Define for MS-DOS. * nsfns.m (check_window_system): Define for NS. Adjust all users. * w32fns.c (check_window_system): Likewise for MS-Windows. * xfns.c (check_window_system): Likewise for X. * font.c, frame.c, nsmenu.m, nsselect.m, nsterm.m, w32menu.c: * xfaces.c, xmenu.c: Use check_window_system where appropriate.
* * window.h (struct window): Replace hchild, vchild and buffer slotsDmitry Antipov2013-03-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with the only contents slot. This is possible because each valid window may have either the child window (in vertical or horizontal combination) or buffer to display (for the leaf window). Using that, a lof of operations to traverse and/or change window hierarchies may be simplified. New member horizontal is used to distinguish between horizontal and vertical combinations of internal windows. (WINDOW_LEAF_P, WINDOW_HORIZONTAL_COMBINATION_P) (WINDOW_VERTICAL_COMBINATION_P): New macros. (WINDOW_VALID_P, WINDOW_LIVE_P): Adjust to match struct window changes. * window.c (wset_hchild, wset_vchild): Remove. Adjust all users. Use contents slot, not buffer, where appropriate. (wset_combination): New function. (wset_buffer): Add eassert. (Fframe_first_window): Simplify the loop reaching first window. (Fwindow_buffer): Use WINDOW_LEAF_P. (Fwindow_top_child): Use WINDOW_VERTICAL_COMBINATION_P. (Fwindow_left_child): Use WINDOW_HORIZONTAL_COMBINATION_P. (unshow_buffer): Convert initial debugging check to eassert. (replace_window, recombine_windows, Fdelete_other_windows_internal) (make_parent_window, window_resize_check, window_resize_apply) (resize_frame_windows, Fsplit_window_internal, Fdelete_window_internal) (Fset_window_configuration, delete_all_child_windows, save_window_save): Adjust to match struct window changes. (window_loop): Check for broken markers in CHECK_ALL_WINDOWS. (mark_window_cursors_off, count_windows, get_leaf_windows) (foreach_window_1): Simplify the loop. * alloc.c (mark_object): Do not check for the leaf window because internal windows has no glyph matrices anyway. * dispnew.c (clear_window_matrices, showing_window_margins_p) (allocate_matrices_for_window_redisplay, fake_current_matrices) (allocate_matrices_for_frame_redisplay, free_window_matrices) (build_frame_matrix_from_window_tree, mirror_make_current) (frame_row_to_window, mirror_line_dance, check_window_matrix_pointers) (update_window_tree, set_window_update_flags): Simplify the loop. (sync_window_with_frame_matrix_rows): Enforce live window. Use contents slot, not buffer, where appropriate. * frame.c (set_menu_bar_lines_1): Use WINDOW_VERTICAL_COMBINATION_P and WINDOW_HORIZONTAL_COMBINATION_P. (make_frame_visible_1): Simplify the loop. Use contents slot, not buffer, where appropriate. * xdisp.c (hscroll_window_tree, mark_window_display_accurate) (redisplay_windows, redisplay_mode_lines, update_cursor_in_window_tree) (expose_window_tree): Likewise. Use contents slot, not buffer, where appropriate. * textprop.c (get_char_property_and_overlay): Add CHECK_LIVE_WINDOW to avoid deleted windows. Use contents slot instead of buffer. * buffer.c, dispextern.h, editfns.c, fileio.c, font.c, fringe.c: * indent.c, insdel.c, keyboard.c, keymap.c, minibuf.c, msdos.c: * nsfns.m, nsmenu.m, nsterm.m, print.c, w32fns.c, w32menu.c, xfaces.c: * xfns.c, xmenu.c: Use contents slot, not buffer, where appropriate.
* Reorder conditions that are written backwardsAndreas Schwab2013-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * alloc.c (xpalloc, Fgarbage_collect): Reorder conditions that are written backwards. * blockinput.h (input_blocked_p): Likewise. * bytecode.c (exec_byte_code): Likewise. * callproc.c (call_process_kill, call_process_cleanup) (Fcall_process): Likewise. * ccl.c (ccl_driver, resolve_symbol_ccl_program) (Fccl_execute_on_string): Likewise. * character.c (string_escape_byte8): Likewise. * charset.c (read_hex): Likewise. * cm.c (calccost): Likewise. * data.c (cons_to_unsigned): Likewise. * dired.c (directory_files_internal, file_name_completion): Likewise. * dispnew.c (scrolling_window, update_frame_1, Fsleep_for) (sit_for): Likewise. * doc.c (Fsubstitute_command_keys): Likewise. * doprnt.c (doprnt): Likewise. * editfns.c (hi_time, decode_time_components, Fformat): Likewise. * emacsgtkfixed.c: Likewise. * fileio.c (file_offset, Fwrite_region): Likewise. * floatfns.c (Fexpt, fmod_float): Likewise. * fns.c (larger_vector, make_hash_table, Fmake_hash_table): Likewise. * font.c (font_intern_prop): Likewise. * frame.c (x_set_alpha): Likewise. * gtkutil.c (get_utf8_string): Likewise. * indent.c (check_display_width): Likewise. * intervals.c (create_root_interval, rotate_right, rotate_left) (split_interval_right, split_interval_left) (adjust_intervals_for_insertion, delete_node) (interval_deletion_adjustment, adjust_intervals_for_deletion) (merge_interval_right, merge_interval_left, copy_intervals) (set_intervals_multibyte_1): Likewise. * keyboard.c (gobble_input, append_tool_bar_item): Likewise. * keymap.c (Fkey_description): Likewise. * lisp.h (FIXNUM_OVERFLOW_P, vcopy): Likewise. * lread.c (openp, read_integer, read1, string_to_number): Likewise. * menu.c (ensure_menu_items): Likewise. * minibuf.c (read_minibuf_noninteractive): Likewise. * print.c (printchar, strout): Likewise. * process.c (create_process, Faccept_process_output) (wait_reading_process_output, read_process_output, send_process) (wait_reading_process_output): Likewise. * profiler.c (make_log, handle_profiler_signal): Likewise. * regex.c (re_exec): Likewise. * regex.h: Likewise. * search.c (looking_at_1, Freplace_match): Likewise. * sysdep.c (get_child_status, procfs_ttyname) (procfs_get_total_memory): Likewise. * systime.h (EMACS_TIME_VALID_P): Likewise. * term.c (dissociate_if_controlling_tty): Likewise. * window.c (get_phys_cursor_glyph): Likewise. * xdisp.c (init_iterator, redisplay_internal, redisplay_window) (try_window_reusing_current_matrix, try_window_id, pint2hrstr): Likewise. * xfns.c (Fx_window_property): Likewise. * xmenu.c (set_frame_menubar): Likewise. * xselect.c (x_get_window_property, x_handle_dnd_message): Likewise. * xsmfns.c (smc_save_yourself_CB): Likewise. * xterm.c (x_scroll_bar_set_handle): Likewise.
* Use functions and constants to manipulate Lisp_Save_Value objects.Paul Eggert2013-03-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This replaces code that used macros and strings and token-pasting. The change makes the C source a bit easier to follow, and shrinks the Emacs executable a bit. * alloc.c: Verify some properties of Lisp_Save_Value's representation. (make_save_value): Change 1st arg from string to enum. All callers changed. (INTX): Remove. (mark_object): Use if, not #if, for GC_MARK_STACK. * lisp.h (SAVE_VALUEP, XSAVE_VALUE, XSAVE_POINTER, XSAVE_INTEGER) (XSAVE_OBJECT): Now functions, not macros. (STRING_BYTES_BOUND): Now just a macro, not a constant too; the constant was never used. (SAVE_SLOT_BITS, SAVE_VALUE_SLOTS, SAVE_TYPE_BITS, SAVE_TYPE_INT_INT) (SAVE_TYPE_INT_INT_INT, SAVE_TYPE_OBJ_OBJ, SAVE_TYPE_OBJ_OBJ_OBJ) (SAVE_TYPE_OBJ_OBJ_OBJ_OBJ, SAVE_TYPE_PTR_INT, SAVE_TYPE_PTR_OBJ) (SAVE_TYPE_PTR_PTR, SAVE_TYPE_PTR_PTR_OBJ, SAVE_TYPE_MEMORY): New constants. (struct Lisp_Save_Value): Replace members area, type0, type1, type2, type3 with a single member save_type. All uses changed. (save_type, set_save_pointer, set_save_integer): New functions. * print.c (PRINTX): Remove.
* * lisp.h (toplevel): Add comment about using Lisp_Save_ValueDmitry Antipov2013-01-171-5/+5
| | | | | | | | | | | | | | | objects, related functions and macros. (make_save_value): Adjust prototype. (make_save_pointer): New prototype. (SAFE_NALLOCA): Fix indentation. Use make_save_pointer. (SAFE_ALLOCA_LISP): Adjust make_save_value usage. * alloc.c (format_save_value): Rename to make_save_value. (make_save_pointer): New function. (record_xmalloc): Use make_save_pointer. * dired.c, editfns.c, fileio.c, font.c, gtkutil.c, lread.c: * nsmenu.m, nsterm.m, xfns.c, xmenu.c, xselect.c, keymap.c: Change users of make_save_value to make_save_pointer. Likewise for format_save_value and make_save_value.
* * keymap.c (map_keymap_internal): Use format_save_value.Dmitry Antipov2013-01-151-4/+3
| | | | | | | | | | | | | (map_keymap_char_table_item): Adjust accordingly. * fileio.c (non_regular_fd, non_regular_inserted) (non_regular_nbytes): Remove. (Finsert_file_contents): Convert trytry to ptrdiff_t. Use format_save_value to pass parameters to read_non_regular. (read_non_regular): Use XSAVE_ macros to extract parameters. Adjust comment. * xmenu.c (xmenu_show) [!USE_X_TOOLKIT && !USE_GTK]: Use format_save_value. (pop_down_menu) [!USE_X_TOOLKIT && !USE_GTK]: Adjust user.
* * src/lisp.h (XSAVE_POINTER, XSAVE_INTEGER): Change to allow extractionDmitry Antipov2013-01-151-4/+4
| | | | | | | | | from any Lisp_Save_Value slot. Add type checking. * src/alloc.c, src/dired.c, src/editfns.c, src/fileio.c, src/ftfont.c: * src/gtkutil.c, src/keymap.c, src/lread.c, src/nsterm.h, src/nsmenu.c: * src/xfns.c, src/xmenu.c, src/xselect.c: All users changed. * admin/coccinelle/xsave.cocci: Semantic patch to adjust users of XSAVE_POINTER and XSAVE_INTEGER macros.
* Avoid needless casts with XSAVE_POINTER.Paul Eggert2013-01-141-1/+1
| | | | | | | | | | | | | | * alloc.c (mark_object) [GC_MARK_STACK]: * dired.c (directory_files_internal_unwind): * fileio.c (do_auto_save_unwind): * gtkutil.c (pop_down_dialog): * keymap.c (map_keymap_char_table_item): * lread.c (load_unwind): * nsmenu.m (pop_down_menu): * print.c (print_object) [GC_MARK_STACK]: * xfns.c (clean_up_file_dialog): * xmenu.c (cleanup_widget_value_tree): Omit casts between XSAVE_POINTER and a pointer type.
* Make Lisp_Save_Value more versatile storage for up to four objects.Dmitry Antipov2013-01-141-13/+4
| | | | | | | | | | | | | | | | | | | | | | | * lisp.h (toplevel): Enumeration to describe types of saved objects. (struct Lisp_Save_Value): New layout. Adjust comments. (XSAVE_POINTER): New macro. (XSAVE_INTEGER): Likewise. (allocate_misc): Add prototype. (free_misc): Likewise. * alloc.c (allocate_misc): Now global. (free_misc): Likewise. Adjust comment. (make_save_value): Use new Lisp_Save_Value layout. Adjust comment. (free_save_value): Likewise. (mark_object): Likewise. * editfns.c (save_excursion_save): Pack everything within Lisp_Save_Value and so avoid xmalloc. (save_excursion_restore): Adjust to match new layout. Use free_misc because we do not allocate extra memory any more. Add eassert. * print.c (print_object): New code to print Lisp_Save_Value. Do not rely on valid_lisp_object_p if !GC_MARK_STACK. Adjust comments. * dired.c, fileio.c, font.c, ftfont.c, gtkutil.c, keymap.c, * lread.c, nsmenu.m, nsterm.h, xfns.c, xmenu.c, xselect.c: Use XSAVE_POINTER and XSAVE_INTEGER where appropriate.
* Merge from emacs-24; up to 2012-12-06T01:39:03Z!monnier@iro.umontreal.caPaul Eggert2013-01-021-2/+2
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| * Update copyright notices for 2013.Paul Eggert2013-01-011-2/+2
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* | Simplify by using FOR_EACH_FRAME here and there.Dmitry Antipov2012-11-121-4/+1
|/ | | | | | | | | | | | | | | | * frame.c (next_frame, prev_frame, other_visible_frames) (delete_frame, visible-frame-list): Use FOR_EACH_FRAME. * w32term.c (x_window_to_scroll_bar): Likewise. * window.c (window_list): Likewise. * xdisp.c (x_consider_frame_title): Likewise. * xfaces.c ( Fdisplay_supports_face_attributes_p): Likewise. * xfns.c (x_window_to_frame, x_any_window_to_frame) (x_menubar_window_to_frame, x_top_window_to_frame): Likewise. * xmenu.c (menubar_id_to_frame): Likewise. * xselect.c (frame_for_x_selection): Likewise. * xterm.c (x_frame_of_widget, x_window_to_scroll_bar) (x_window_to_menu_bar): Likewise. * w32fns.c (x_window_to_frame): Likewise. Adjust comment.
* lread.c, macros.c, marker.c, menu.c, minibuf.c: Use bool for booleans.Paul Eggert2012-10-111-12/+13
| | | | | | | | | | | | | | | | | | | | | | * lread.c (load_each_byte, new_backquote_flag, readchar) (read_filtered_event, lisp_file_lexically_bound_p) (safe_to_load_version, Fload, complete_filename_p, openp) (build_load_history, readevalloop, read_escape, read1) (string_to_number, read_vector, read_list): * macros.c (Fstart_kbd_macro): * marker.c (CONSIDER): * menu.c (parse_single_submenu, digest_single_submenu) (find_and_return_menu_selection, Fx_popup_menu): * minibuf.c (read_minibuf_noninteractive, read_minibuf) (Ftry_completion): * nsmenu.m (ns_update_menubar, runMenuAt:forFrame:keymaps:): (ns_menu_show): * xmenu.c (set_frame_menubar, create_and_show_popup_menu) (xmenu_show, xdialog_show): Use bool for booleans. * lread.c (safe_to_load_version): Rename from safe_to_load_p, as it's not a predicate. All uses changed. Omit unnecessary buffer termination.
* gnutls.c, gtkutil.c: Use bool for boolean.Paul Eggert2012-09-231-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | * gnutls.c (gnutls_global_initialized, init_gnutls_functions) (emacs_gnutls_handle_error): * gtkutil.c (xg_check_special_colors, xg_prepare_tooltip) (xg_hide_tooltip, xg_create_frame_widgets) (create_dialog, xg_uses_old_file_dialog) (xg_get_file_with_chooser, xg_get_file_with_selection) (xg_get_file_name, xg_have_tear_offs, create_menus, xg_create_widget) (xg_item_label_same_p, xg_update_menubar) (xg_modify_menubar_widgets, xg_event_is_for_menubar) (xg_ignore_gtk_scrollbar, xg_set_toolkit_scroll_bar_thumb) (xg_event_is_for_scrollbar, xg_pack_tool_bar, xg_make_tool_item) (is_box_type, xg_tool_item_stale_p, xg_update_tool_bar_sizes) (update_frame_tool_bar, free_frame_tool_bar): * gtkutil.c, w32term.c, xterm.c (x_wm_set_size_hint): * nsmenu.m (ns_update_menubar): * nsmenu.m, w32menu.c, xmenu.c (set_frame_menubar): * xfns.c (Fx_show_tip) [USE_GTK]: Use bool for boolean. * gtkutil.c (xg_update_frame_menubar): * xmenu.c (update_frame_menubar): Return void, not int, since caller ignores return value. * gtkutil.c (xg_change_toolbar_position): Return void, not 1.
* Simplify and avoid signal-handling races.Paul Eggert2012-09-231-27/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * nt/inc/ms-w32.h (emacs_raise): New macro. * src/alloc.c (die): * src/sysdep.c (emacs_abort) [HAVE_NTGUI]: Avoid recursive loop if there's a fatal error in the function itself. * src/atimer.c (pending_atimers): * src/blockinput.h: Don't include "atimer.h"; no longer needed. (interrupt_input_pending): Remove. All uses removed. pending_signals now counts both atimers and ordinary interrupts. This is less racy than having three separate pending-signal flags. (block_input, unblock_input, totally_unblock_input, unblock_input_to) (input_blocked_p): Rename from their upper-case counterparts BLOCK_INPUT, UNBLOCK_INPUT, TOTALLY_UNBLOCK_INPUT, UNBLOCK_INPUT_TO, INPUT_BLOCKED_P, and turn into functions. All uses changed. This makes it easier to access volatile variables more accurately. (BLOCK_INPUT_RESIGNAL): Remove. All uses replaced by unblock_input (). (input_blocked_p): Prefer this to 'interrupt_input_blocked', as that's more reliable if the code is buggy and sets interrupt_input_blocked to a negative value. All uses changed. * src/atimer.c (deliver_alarm_signal): Remove. No need to deliver this to the parent; any thread can handle this signal now. All uses replaced by underlying handler. * src/atimer.c (turn_on_atimers): * src/dispnew.c (handle_window_change_signal): * src/emacs.c (handle_danger_signal): * src/keyboard.c (kbd_buffer_get_event): Don't reestablish signal handler; not needed with sigaction. * src/blockinput.h (UNBLOCK_INPUT_TO, TOTALLY_UNBLOCK_INPUT) (UNBLOCK_INPUT_TO): Rework to avoid unnecessary accesses to volatile variables. (UNBLOCK_INPUT_TO): Now a function. (totally_unblock_input, unblock_input): New decls. * src/data.c (handle_arith_signal, deliver_arith_signal): Move to sysdep.c (init_data): Remove. Necessary stuff now done in init_signal. * src/emacs.c, src/xdisp.c: Include "atimer.h", since we invoke atimer functions. * src/emacs.c (handle_fatal_signal, deliver_fatal_signal): Move to sysdep.c. (fatal_error_code): Remove; no longer needed. (terminate_due_to_signal): Rename from fatal_error_backtrace, since it doesn't always backtrace. All uses changed. No need to reset signal to default, since sigaction and/or die does that for us now. Use emacs_raise (FOO), not kill (getpid (), FOO). (main): Check more-accurately whether we're dumping. Move fatal-error setup to sysdep.c * src/floatfns.c: Do not include "syssignal.h"; no longer needed. * src/gtkutil.c (xg_get_file_name, xg_get_font): Remove no-longer-needed signal-mask manipulation. * src/keyboard.c, src/process.c (POLL_FOR_INPUT): Don't depend on USE_ASYNC_EVENTS, a symbol that is never defined. * src/keyboard.c (read_avail_input): Remove. All uses replaced by gobble_input. (Ftop_level): Use TOTALLY_UNBLOCK_INPUT rather than open code. (kbd_buffer_store_event_hold, gobble_input): (record_asynch_buffer_change) [USABLE_SIGIO]: (store_user_signal_events): No need to mess with signal mask. (gobble_input): If blocking input and there are terminals, simply set pending_signals to 1 and return. All hooks changed to not worry about whether input is blocked. (process_pending_signals): Clear pending_signals before processing them, in case a signal comes in while we're processing. By convention callers now test pending_signals before calling us. (UNBLOCK_INPUT_TO, unblock_input, totally_unblock_input): New functions, to support changes to blockinput.h. (handle_input_available_signal): Now extern. (reinvoke_input_signal): Remove. All uses replaced by handle_async_input. (quit_count): Now volatile, since a signal handler uses it. (handle_interrupt): Now takes bool IN_SIGNAL_HANDLER as arg. All callers changed. Block SIGINT only if not already blocked. Clear sigmask reliably, even if Fsignal returns, which it can. Omit unnecessary accesses to volatile var. (quit_throw_to_read_char): No need to restore sigmask. * src/keyboard.c (gobble_input, handle_user_signal): * src/process.c (wait_reading_process_output): Call signal-handling code rather than killing ourselves. * src/lisp.h: Include <float.h>, for... (IEEE_FLOATING_POINT): New macro, moved here to avoid duplication. (pending_signals): Now volatile. (syms_of_data): Now const if IEEE floating point. (handle_input_available_signal) [USABLE_SIGIO]: (terminate_due_to_signal, record_child_status_change): New decls. * src/process.c (create_process): Avoid disaster if memory is exhausted while we're processing a vfork, by tightening the critical section around the vfork. (send_process_frame, process_sent_to, handle_pipe_signal) (deliver_pipe_signal): Remove. No longer needed, as Emacs now ignores SIGPIPE. (send_process): No need for setjmp/longjmp any more, since the SIGPIPE stuff is now gone. Instead, report an error if errno is EPIPE. (record_child_status_change): Now extern. PID and W are now args. Return void, not bool. All callers changed. * src/sysdep.c (wait_debugging) [(BSD_SYSTEM || HPUX) && !defined (__GNU__)]: Remove. All uses removed. This bug should be fixed now in a different way. (wait_for_termination_1): Use waitpid rather than sigsuspend, and record the child status change directly. This avoids the need to futz with the signal mask. (process_fatal_action): Move here from emacs.c. (emacs_sigaction_flags): New function, containing much of what used to be in emacs_sigaction_init. (emacs_sigaction_init): Use it. Block nonfatal system signals that are caught by emacs, to make races less likely. (deliver_process_signal): Rename from handle_on_main_thread. All uses changed. (BACKTRACE_LIMIT_MAX): Now at top level. (thread_backtrace_buffer, threadback_backtrace_pointers): New static vars. (deliver_thread_signal, deliver_fatal_thread_signal): New functions, for more-accurate delivery of thread-specific signals. (handle_fatal_signal, deliver_fatal_signal): Move here from emacs.c. (deliver_arith_signal): Handle in this thread, not in the main thread, since it's triggered by this thread. (maybe_fatal_sig): New function. (init_signals): New arg DUMPING so that we can be more accurate about whether we're dumping. Caller changed. Treat thread-specific signals differently from process-general signals. Block all signals while handling fatal error; that's safer. xsignal from SIGFPE only on non-IEEE hosts, treating it as fatal on IEEE hosts. When batch, ignore SIGHUP, SIGINT, SIGTERM if they were already ignored. Ignore SIGPIPE unless batch. (emacs_backtrace): Output backtrace for the appropriate thread, which is not necessarily the main thread. * src/syssignal.h: Include <stdbool.h>. (emacs_raise): New macro. * src/xterm.c (x_connection_signal): Remove; no longer needed now that we use sigaction. (x_connection_closed): No need to mess with sigmask now. (x_initialize): No need to reset SIGPIPE handler here, since init_signals does this for us now. Fixes: debbugs:12471
* Port better to POSIX hosts lacking _setjmp.Paul Eggert2012-09-151-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | * configure.ac (HAVE__SETJMP, HAVE_SIGSETJMP): New symbols. (_setjmp, _longjmp): Remove. * src/lisp.h: Include <setjmp.h> here, since we use its symbols here. All instances of '#include <setjmp.h>' removed, if the only reason for the instance was because "lisp.h" was included. (sys_jmp_buf, sys_setjmp, sys_longjmp): New symbols. Unless otherwise specified, replace all uses of jmp_buf, _setjmp, and _longjmp with the new symbols. Emacs already uses _setjmp if available, so this change affects only POSIXish hosts that have sigsetjmp but not _setjmp, such as some versions of Solaris and Unixware. (Also, POSIX-2008 marks _setjmp as obsolescent.) * src/image.c (_setjmp, _longjmp) [HAVE_PNG && !HAVE__SETJMP]: New macros. (png_load_body) [HAVE_PNG]: (PNG_LONGJMP) [HAVE_PNG && PNG_LIBPNG_VER < 10500]: (PNG_JMPBUF) [HAVE_PNG && PNG_LIBPNG_VER >= 10500]: Use _setjmp and _longjmp rather than sys_setjmp and sys_longjmp, since PNG requires jmp_buf. This is the only exception to the general rule that we now use sys_setjmp and sys_longjmp. This exception is OK since this code does not change the signal mask or longjmp out of a signal handler. Fixes: debbugs:12446
* Signal-handler cleanup.Paul Eggert2012-09-061-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Emacs's signal handlers were written in the old 4.2BSD style with sigblock and sigmask and so forth, and this led to some inefficiencies and confusion. Rewrite these to use pthread_sigmask etc. without copying signal sets around. Also, get rid of the confusing macros 'SIGNAL_THREAD_CHECK' and 'signal', and instead use functions that do not attempt to take over the system name space. This patch causes Emacs's text segment to shrink by 0.7% on my platform, Fedora 17 x86-64. * configure.ac (PTY_OPEN, PTY_TTY_NAME_SPRINTF): Adjust to syssignal.h changes. (SIGNAL_H_AB): Remove; no longer needed. * src/alloc.c, src/emacsgtkfixed.c, src/nsfns.m, src/widget.c, src/xmenu.c: Do not include <signal.h> or "syssignal.h", as these modules do not use signals. * src/atimer.c, src/callproc.c, src/data.c, src/dispnew.c, src/emacs.c: * src/floatfns.c, src/gtkutil.c, src/keyboard.c, src/process.c, src/sound.c: * src/sysdep.c, src/term.c, src/xterm.c: Do not include <signal.h>, as "syssignal.h" does that for us now. * src/atimer.c (sigmask_atimers): New function. (block_atimers, unblock_atimers): New functions, replacing the old macros BLOCK_ATIMERS and UNBLOCK_ATIMERS. All uses replaced. * src/conf_post.h [SIGNAL_H_AHB]: Do not include <signal.h>; no longer needed here. * src/emacs.c (main): Inspect existing signal handler with sigaction, so that there's no need to block and unblock SIGHUP. * src/sysdep.c (struct save_signal): New member 'action', replacing old member 'handler'. (save_signal_handlers, restore_signal_handlers): Use sigaction instead of 'signal' to save and restore. (get_set_sighandler, set_sighandler) [!WINDOWSNT]: New function. All users of 'signal' modified to use set_sighandler if they're writeonly, and to use sys_signal if they're read+write. (emacs_sigaction_init, forwarded_signal): New functions. (sys_signal): Remove. All uses replaced by calls to sigaction and emacs_sigaction_init, or by direct calls to 'signal'. (sys_sigmask) [!__GNUC__]: Remove; no longer needed. (sys_sigblock, sys_sigunblock, sys_sigsetmask): Remove; all uses replaced by pthread_sigmask etc. calls. * src/syssignal.h: Include <signal.h>. (emacs_sigaction_init, forwarded_signal): New decls. (SIGMASKTYPE): Remove. All uses replaced by its definiens, sigset_t. (SIGEMPTYMASK): Remove; all uses replaced by its definiens, empty_mask. (sigmask, sys_sigmask): Remove; no longer needed. (sigpause): Remove. All uses replaced by its definiens, sigsuspend. (sigblock, sigunblock, sigfree): (sigsetmask) [!defined sigsetmask]: Remove. All uses replaced by pthread_sigmask. (signal): Remove. Its remaining uses (with SIG_DFL and SIG_IGN) no longer need to be replaced, and its typical old uses are now done via emacs_sigaction_init and sigaction. (sys_sigblock, sys_sigunblock, sys_sigsetmask): Remove decls. (sys_sigdel): Remove; unused. (NSIG): Remove a FIXME; the code's fine. Remove an unnecessary ifdef. Fixes: debbugs:12327
* Simplify redefinition of 'abort' (Bug#12316).Paul Eggert2012-09-041-13/+13
| | | | | | | | | | | | | | | | | | | | | | Do not try to redefine the 'abort' function. Instead, redo the code so that it calls 'emacs_abort' rather than 'abort'. This removes the need for the NO_ABORT configure-time macro and makes it easier to change the abort code to do a backtrace. * configure.ac (NO_ABRT): Remove. * admin/CPP-DEFINES (NO_ABORT): Remove. * nt/inc/ms-w32.h (w32_abort) [HAVE_NTGUI]: Remove. * src/.gdbinit: Just stop at emacs_abort, not at w32_abort or abort. * src/emacs.c (abort) [!DOS_NT && !NO_ABORT]: Remove; sysdep.c's emacs_abort now takes its place. * src/lisp.h (emacs_abort): New decl. All calls from Emacs code to 'abort' changed to use 'emacs_abort'. * src/msdos.c (dos_abort) [defined abort]: Remove; not used. (abort) [!defined abort]: Rename to ... (emacs_abort): ... new name. * src/sysdep.c (emacs_abort) [!HAVE_NTGUI]: New function, taking the place of the old 'abort' in emacs.c. * src/w32.c, src/w32fns.c (abort): Do not #undef. * src/w32.c (emacs_abort): Rename from w32_abort.
* * frame.h (FSET): Remove (Bug#12215).Paul Eggert2012-08-171-3/+3
| | | | | | | | | | | | | | | | | Replace all uses with calls to new setter functions. Use INLINE_HEADER_BEGIN, INLINE_HEADER_END. (FRAME_INLINE): New macro. (fset_buffer_list, fset_buried_buffer_list, fset_condemned_scroll_bars) (fset_current_tool_bar_string, fset_desired_tool_bar_string) (fset_face_alist, fset_focus_frame, fset_icon_name, fset_menu_bar_items) (fset_menu_bar_vector, fset_menu_bar_window, fset_name) (fset_param_alist, fset_root_window, fset_scroll_bars) (fset_selected_window, fset_title, fset_tool_bar_items) (fset_tool_bar_position, fset_tool_bar_window): New functions. * frame.c (FRAME_INLINE): Define to EXTERN_INLINE, so that the corresponding functions are compiled into code. (fset_buffer_predicate, fset_minibuffer_window): New setter functions.
* Drop WGET and revert read access to Lisp_Objects slots of struct window.Dmitry Antipov2012-08-071-1/+1
| | | | | | | | | | | * window.h (WGET): Remove. (struct window): Do not use INTERNAL_FIELD. * alloc.c, buffer.c, composite.c, dispextern.h, dispnew.c, editfns.c: * fileio.c, font.c, fontset.c, frame.c, frame.h, fringe.c, indent.c: * insdel.c, keyboard.c, keymap.c, lisp.h, minibuf.c, msdos.c, nsfns.m: * nsmenu.m, nsterm.m, print.c, textprop.c, w32fns.c, w32menu.c: * w32term.c, window.c, xdisp.c, xfaces.c, xfns.c, xmenu.c, xterm.c: Adjust users.
* Drop FGET and revert read access to Lisp_Objects slots of struct frame.Dmitry Antipov2012-08-071-3/+3
| | | | | | | | | * frame.h (FGET): Remove. (struct frame): Do not use INTERNAL_FIELD. * buffer.c, data.c, dispnew.c, dosfns.c, eval.c, fontset.c, frame.c: * fringe.c, gtkutil.c, minibuf.c, msdos.c, nsfns.m, nsmenu.m, nsterm.m: * print.c, term.c, w32fns.c, w32menu.c, w32term.c, window.c, window.h: * xdisp.c, xfaces.c, xfns.c, xmenu.c, xterm.c: Adjust users.
* Separate read and write access to Lisp_Object slots of struct window.Dmitry Antipov2012-08-061-2/+2
| | | | | | | | | | * window.h (WGET, WSET): New macros similar to AREF and ASET. * alloc.c, buffer.c, composite.c, dispextern.h, dispnew.c, editfns.c: * fileio.c, font.c, fontset.c, frame.c, frame.h, fringe.c, indent.c: * insdel.c, keyboard.c, keymap.c, lisp.h, minibuf.c, msdos.c, nsfns.m: * nsmenu.m, nsterm.m, print.c, textprop.c, w32fns.c, w32menu.c: * w32term.c, window.c, xdisp.c, xfaces.c, xfns.c, xmenu.c, xterm.c: Adjust users.
* Separate read and write access to Lisp_Object slots of struct frame.Dmitry Antipov2012-08-061-6/+6
| | | | | | | | * frame.h (FGET, FSET): New macros similar to AREF and ASET. * buffer.c, data.c, dispnew.c, dosfns.c, eval.c, fontset.c, frame.c: * fringe.c, gtkutil.c, minibuf.c, msdos.c, nsfns.m, nsmenu.m, nsterm.m: * print.c, term.c, w32fns.c, w32menu.c, w32term.c, window.c, window.h: * xdisp.c, xfaces.c, xfns.c, xmenu.c, xterm.c: Adjust users.
* Generalize common compile-time constants.Dmitry Antipov2012-08-051-1/+1
| | | | | | | | | | | | * lisp.h (header_size, bool_header_size, word_size): Now here. (struct Lisp_Vector): Add comment. (struct Lisp_Bool_Vector): Move up to define handy constants. (VECSIZE, PSEUDOVECSIZE): Simplify. (SAFE_ALLOCA_LISP): Use new constant. Adjust indentation. * buffer.c, buffer.h, bytecode.c, callint.c, eval.c, fns.c: * font.c, fontset.c, keyboard.c, keymap.c, macros.c, menu.c: * msdos.c, w32menu.c, w32term.h, window.c, xdisp.c, xfaces.c: * xfont.c, xmenu.c: Use word_size where appropriate.
* Use "ASET (a, i, v)" rather than "AREF (a, i) = v".Paul Eggert2012-08-011-5/+4
| | | | | | | | | | | | | | | This how ASET and AREF are supposed to work, and makes it easier to think about future improvements. See <http://lists.gnu.org/archive/html/emacs-devel/2012-08/msg00026.html>. * charset.h (set_charset_attr): New function. All lvalue-style uses of CHARSET_DECODER etc. changed to use it. * lisp.h (ASET): Rewrite so as not to use AREF in an lvalue style. (aref_addr): New function. All uses of &AREF(...) changed. (set_hash_key, set_hash_value, set_hash_next, set_hash_hash) (set_hash_index): New functions. All lvalue-style uses of HASH_KEY etc. changed. * keyboard.c (set_prop): New function. All lvalue-style uses of PROP changed.
* Use INTERNAL_FIELD for windows.Dmitry Antipov2012-08-011-1/+1
| | | | | | | | | | | | | | * src/window.h (WVAR): New macro. (struct window): Change Lisp_Object members to INTERNAL_FIELD. * src/alloc.c, src/buffer.c, src/composite.c, src/dispextern.h: * src/dispnew.c, src/editfns.c, src/fileio.c, src/font.c, src/fontset.c: * src/frame.c, src/frame.h, src/fringe.c, src/indent.c, src/insdel.c: * src/keyboard.c, src/keymap.c, src/lisp.h, src/minibuf.c, src/nsterm.m: * src/print.c, src/textprop.c, src/w32fns.c, src/w32menu.c, src/w32term.c: * src/window.c, src/xdisp.c, src/xfaces.c, src/xfns.c, src/xmenu.c: * src/xterm.c: Users changed. * admin/coccinelle/window.cocci: Semantic patch to replace direct access to Lisp_Object members of struct window to WVAR.
* Generalize INTERNAL_FIELD between buffers, keyboards and frames.Dmitry Antipov2012-07-311-4/+4
| | | | | | | | | | | | | | | | | * src/lisp.h (INTERNAL_FIELD): New macro. * src/buffer.h (BUFFER_INTERNAL_FIELD): Removed. (BVAR): Change to use INTERNAL_FIELD. * src/keyboard.h (KBOARD_INTERNAL_FIELD): Likewise. (KVAR): Change to use INTERNAL_FIELD. * src/frame.h (FVAR): New macro. (struct frame): Use INTERNAL_FIELD for all Lisp_Object fields. * src/alloc.c, src/buffer.c, src/data.c, src/dispnew.c, src/dosfns.c * src/eval.c, src/frame.c, src/fringe.c, src/gtkutil.c, src/minibuf.c * src/nsfns.m, src/nsterm.m, src/print.c, src/term.c, src/w32fns.c * src/w32menu.c, src/w32term.c, src/window.c, src/window.h, src/xdisp.c * src/xfaces.c, src/xfns.c, src/xmenu.c, src/xterm.c: Users changed. * admin/coccinelle/frame.cocci: Semantic patch to replace direct access to Lisp_Object members of struct frame to FVAR.
* * lisp/emacs-lisp/chart.el: Use lexical-binding.Stefan Monnier2012-07-191-8/+6
| | | | | (chart-emacs-storage): Don't hardcode the list of entries. * src/alloc.c (Fgarbage_collect): Tweak docstring.
* * coding.c (Fdefine_coding_system_internal): Use XCAR/XCDR insteadAndreas Schwab2012-07-111-2/+2
| | | | | | | | | | | of Fcar/Fcdr if possible. * font.c (check_otf_features): Likewise. * fontset.c (Fnew_fontset): Likewise. * gnutls.c (Fgnutls_boot): Likewise. * minibuf.c (read_minibuf): Likewise. * msdos.c (IT_set_frame_parameters): Likewise. * xmenu.c (Fx_popup_dialog): Likewise. * w32menu.c (Fx_popup_dialog): Likewise.
* Use XCAR and XCDR instead of Fcar and Fcdr where possible.Dmitry Antipov2012-07-101-2/+1
| | | | | | | | | | | * admin/coccinelle/list_loop.cocci: Semantic patch to convert from Fcdr to XCDR and consistently use CONSP in the list iteration loops. * admin/coccinelle/vector_contents.cocci: Fix indentation. * src/callint.c, src/coding.c, src/doc.c, src/editfns.c, src/eval.c, * src/font.c, src/fontset.c, src/frame.c, src/gnutls.c, src/minibuf.c, * src/msdos.c, src/textprop.c, src/w32fns.c, src/w32menu.c, src/window.c, * src/xmenu.c: Changed to use XCAR and XCDR where argument type is known to be a Lisp_Cons.
* More xmalloc and related cleanup.Paul Eggert2012-07-051-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | * alloc.c, bidi.c, buffer.c, buffer.h, bytecode.c, callint.c: * callproc.c, charset.c, coding.c, composite.c, data.c, dispnew.c: * doc.c, editfns.c, emacs.c, eval.c, fileio.c, filelock.c, fns.c: * font.c, fontset.c, frame.c, fringe.c, ftfont.c, ftxfont.c, gmalloc.c: * gtkutil.c, image.c, keyboard.c, keymap.c, lread.c, macros.c, menu.c: * nsfns.m, nsfont.m, nsmenu.m, nsterm.m, print.c, process.c, ralloc.c: * regex.c, region-cache.c, scroll.c, search.c, sound.c, syntax.c: * sysdep.c, term.c, termcap.c, unexmacosx.c, window.c, xdisp.c: * xfaces.c, xfns.c, xftfont.c, xgselect.c, xmenu.c, xrdb.c, xselect.c: * xterm.c: Omit needless casts involving void * pointers and allocation. Prefer "P = xmalloc (sizeof *P)" to "P = xmalloc (sizeof (TYPE_OF_P))", as the former is more robust if P's type is changed. Prefer xzalloc to xmalloc + memset 0. Simplify malloc-or-realloc to realloc. Don't worry about xmalloc returning a null pointer. Prefer xstrdup to xmalloc + strcpy. * editfns.c (Fmessage_box): Grow message_text by at least 80 when growing it. * keyboard.c (apply_modifiers_uncached): Prefer local array to alloca of a constant.
* Cleanup xmalloc.Dmitry Antipov2012-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * admin/coccinelle/xzalloc.cocci: Semantic patch to convert calls to xmalloc with following memset to xzalloc. * src/lisp.h (xzalloc): New prototype. Omit needless casts. * src/alloc.c (xzalloc): New function. Omit needless casts. * src/charset.c: Omit needless casts. Convert all calls to malloc with following memset to xzalloc. * src/dispnew.c: Likewise. * src/fringe.c: Likewise. * src/image.c: Likewise. * src/sound.c: Likewise. * src/term.c: Likewise. * src/w32fns.c: Likewise. * src/w32font.c: Likewise. * src/w32term.c: Likewise. * src/xfaces.c: Likewise. * src/xfns.c: Likewise. * src/xterm.c: Likewise. * src/atimer.c: Omit needless casts. * src/buffer.c: Likewise. * src/callproc.c: Likewise. * src/ccl.c: Likewise. * src/coding.c: Likewise. * src/composite.c: Likewise. * src/doc.c: Likewise. * src/doprnt.c: Likewise. * src/editfns.c: Likewise. * src/emacs.c: Likewise. * src/eval.c: Likewise. * src/filelock.c: Likewise. * src/fns.c: Likewise. * src/gtkutil.c: Likewise. * src/keyboard.c: Likewise. * src/lisp.h: Likewise. * src/lread.c: Likewise. * src/minibuf.c: Likewise. * src/msdos.c: Likewise. * src/print.c: Likewise. * src/process.c: Likewise. * src/region-cache.c: Likewise. * src/search.c: Likewise. * src/sysdep.c: Likewise. * src/termcap.c: Likewise. * src/terminal.c: Likewise. * src/tparam.c: Likewise. * src/w16select.c: Likewise. * src/w32.c: Likewise. * src/w32reg.c: Likewise. * src/w32select.c: Likewise. * src/w32uniscribe.c: Likewise. * src/widget.c: Likewise. * src/xdisp.c: Likewise. * src/xmenu.c: Likewise. * src/xrdb.c: Likewise. * src/xselect.c: Likewise.
* * xmenu.c (xmenu_show, xdialog_show): Explicit cast fromDmitry Antipov2012-06-251-2/+2
| | | | `const char *' to `char *' to avoid compiler warning.
* * xmenu.c (x_menu_wait_for_event): Adapt GTK3 to new xg_select.Chong Yidong2012-06-231-5/+4
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* Support higher-resolution time stamps.Paul Eggert2012-06-221-5/+3
| | | | Fixes: debbugs:9000
* * alloc.c, bytecode.c, ccl.c, coding.c, composite.c, data.c, dosfns.c:Dmitry Antipov2012-06-191-42/+42
| | | | | | | * font.c, image.c, keyboard.c, lread.c, menu.c, minibuf.c, msdos.c: * print.c, syntax.c, window.c, xmenu.c, xselect.c: Replace direct access to `contents' member of Lisp_Vector objects with AREF and ASET where appropriate.
* * buffer.h (FETCH_MULTIBYTE_CHAR): Define as inline.Andreas Schwab2012-06-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (BUF_FETCH_MULTIBYTE_CHAR): Likewise. * character.c (_fetch_multibyte_char_p): Remove. * alloc.c: Include "character.h" before "buffer.h". * bidi.c: Likewise. * buffer.c: Likewise. * bytecode.c: Likewise. * callint.c: Likewise. * callproc.c: Likewise. * casefiddle.c: Likewise. * casetab.c: Likewise. * category.c: Likewise. * cmds.c: Likewise. * coding.c: Likewise. * composite.c: Likewise. * dired.c: Likewise. * dispnew.c: Likewise. * doc.c: Likewise. * dosfns.c: Likewise. * editfns.c: Likewise. * emacs.c: Likewise. * fileio.c: Likewise. * filelock.c: Likewise. * font.c: Likewise. * fontset.c: Likewise. * fringe.c: Likewise. * indent.c: Likewise. * insdel.c: Likewise. * intervals.c: Likewise. * keyboard.c: Likewise. * keymap.c: Likewise. * lread.c: Likewise. * macros.c: Likewise. * marker.c: Likewise. * minibuf.c: Likewise. * nsfns.m: Likewise. * nsmenu.m: Likewise. * print.c: Likewise. * process.c: Likewise. * regex.c: Likewise. * region-cache.c: Likewise. * search.c: Likewise. * syntax.c: Likewise. * term.c: Likewise. * textprop.c: Likewise. * undo.c: Likewise. * unexsol.c: Likewise. * w16select.c: Likewise. * w32fns.c: Likewise. * w32menu.c: Likewise. * window.c: Likewise. * xdisp.c: Likewise. * xfns.c: Likewise. * xmenu.c: Likewise. * xml.c: Likewise. * xselect.c: Likewise.
* Merge from trunk.Paul Eggert2012-01-091-3/+22
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| * Add 2012 to FSF copyright years for Emacs filesGlenn Morris2012-01-051-1/+1
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| * * xmenu.c (x_menu_wait_for_event): Use xg_select for Gtk3 so menusJan Djärv2011-12-261-2/+21
| | | | | | | | | | | | | | | | can scroll. (create_and_show_popup_menu): Always use menu_position_func for Gtk3. Fixes: debbugs:10361
* | Merge from trunk.Paul Eggert2011-12-101-1/+1
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| * Spelling fixes.Paul Eggert2011-11-191-1/+1
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* | Merge from trunk.Paul Eggert2011-11-181-4/+27
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| * Merge from emacs-23; up to 2010-06-22T07:41:10Z!rgm@gnu.orgGlenn Morris2011-11-061-4/+27
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| | * Fix memory leak by y-or-n-p-with-timeout with GUI (Bug#9830).YAMAMOTO Mitsuharu2011-10-311-4/+27
| | | | | | | | | | | | | | | | | | * xmenu.c (cleanup_widget_value_tree): New function. (xmenu_show, xdialog_show): Use it in record_unwind_protect instead of calling free_menubar_widget_value_tree directly (Bug#9830).
| | * * xmenu.c (set_frame_menubar): Fix submenu loops.Andreas Schwab2011-05-091-9/+8
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| | * Backport revisions ↵Eli Zaretskii2011-05-091-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2011-04-24T05:30:24Z!eggert@cs.ucla.edu..2011-04-25T19:40:22Z!eggert@cs.ucla.edu (inclusive) from trunk (bug#8623) The next log entry shows the actual changes by Paul Eggert. Fix a problem with aliasing and vector headers. GCC 4.6.0 optimizes based on type-based alias analysis. For example, if b is of type struct buffer * and v of type struct Lisp_Vector *, then gcc -O2 was incorrectly assuming that &b->size != &v->size, and therefore "v->size = 1; b->size = 2; return v->size;" must therefore return 1. This assumption is incorrect for Emacs, since it type-puns struct Lisp_Vector * with many other types. To fix this problem, this patch adds a new type struct vector_header that documents the constraints on layout of vectors and pseudovectors, and helps optimizing compilers not get fooled by Emacs's type punning. It also adds the macros XSETTYPED_PVECTYPE XSETTYPED_PSEUDOVECTOR, TYPED_PSEUDOVECTORP, for similar reasons. src/lisp.h (XVECTOR_SIZE): New convenience macro. All previous uses of XVECTOR (foo)->size replaced to use this macro, to avoid the hassle of writing XVECTOR (foo)->header.size. src/lisp.h: Say "vectorlike header" rather than "vector header. (struct vectorlike_header): Rename from struct vector_header. (XVECTORLIKE_HEADER_SIZE): Renamed from XVECTOR_HEADER_SIZE. All uses changed. (XVECTOR_HEADER_SIZE): New macro, for use in XSETPSEUDOVECTOR. (XSETTYPED_PVECTYPE): New macro, specifying the name of the size member. (XSETPVECTYPE): Rewrite in terms of new macro. (XSETPVECTYPESIZE): New macro, specifying both type and size. This is a bit clearer, and further avoids the possibility of undesirable aliasing. (XSETTYPED_PSEUDOVECTOR): New macro, specifying the size. (XSETPSEUDOVECTOR): Rewrite in terms of XSETTYPED_PSEUDOVECTOR and XVECTOR_HEADER_SIZE. (XSETSUBR): Rewrite in terms of XSETTYPED_PSEUDOVECTOR and XSIZE, since Lisp_Subr is a special case (no "next" field). (ASIZE): Rewrite in terms of XVECTOR_SIZE. (struct vector_header): New type. (TYPED_PSEUDOVECTORP): New macro, also specifying the C type of the object, to help avoid aliasing. (PSEUDOVECTORP): Rewrite in terms of TYPED_PSEUDOVECTORP. (SUBRP): Likewise, since Lisp_Subr is a special case. src/lisp.h (struct Lisp_Vector, struct Lisp_Char_Table): (struct Lisp_Sub_Char_Table, struct Lisp_Bool_Vector): (struct Lisp_Hash_Table): Combine first two members into a single struct vector_header member. All uses of "size" and "next" members changed to be "header.size" and "header.next". src/buffer.h (struct buffer): Likewise. src/font.h (struct font_spec, struct font_entity, struct font): Likewise. src/frame.h (struct frame): Likewise. src/process.h (struct Lisp_Process): Likewise. src/termhooks.h (struct terminal): Likewise. src/window.c (struct save_window_data, struct saved_window): Likewise. src/window.h (struct window): Likewise. src/alloc.c (allocate_buffer, Fmake_bool_vector, allocate_pseudovector): Use XSETPVECTYPESIZE, not XSETPVECTYPE, to avoid aliasing problems. src/buffer.c (init_buffer_once): Likewise. src/lread.c (defsubr): Use XSETTYPED_PVECTYPE, since Lisp_Subr is a special case. src/process.c (Fformat_network_address): Use local var for size, for brevity. src/fns.c (vector): Remove; this old hack is no longer needed. src/bytecode.c (exec_byte_code): Don't use XVECTOR before CHECK_VECTOR.
* | | Merge from trunk.Paul Eggert2011-09-211-1/+1
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| * | Fix typos.Juanma Barranquero2011-09-171-1/+1
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