view src/database.c @ 2720:6fa9919a9a0b

[xemacs-hg @ 2005-04-08 23:10:01 by crestani] ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         New configure flag: `MC_ALLOC':         * configure.ac (XE_COMPLEX_ARG_ENABLE): Add `--enable-mc-alloc' as         a new configure flag.         * configure.in (AC_INIT_PARSE_ARGS): Add `--mc-alloc' as a new         configure flag.         * configure.usage: Add description for `mc-alloc'.         DUMP_IN_EXEC:         * Makefile.in.in: Condition the installation of a separate dump         file on !DUMP_ON_EXEC.         * configure.ac (XE_COMPLEX_ARG_ENABLE): Add         `--enable-dump-in-exec' as a new configure flag.         * configure.ac: DUMP_IN_EXEC is define as default for PDUMP but         not default for MC_ALLOC.         * configure.in (AC_INIT_PARSE_ARGS): Add `--dump-in-exec' as a         new configure flag.         * configure.in: DUMP_IN_EXEC is define as default for PDUMP but         not default for MC_ALLOC.         * configure.usage: Add description for `dump-in-exec'. lib-src/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         DUMP_IN_EXEC:                  * Makefile.in.in: Only compile insert-data-in-exec if         DUMP_IN_EXEC is defined. lisp/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         MEMORY_USAGE_STATS         * diagnose.el: Add new lisp function to pretty print statistics         about the new allocator.         * diagnose.el (show-mc-alloc-memory-usage): New. modules/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         Remove Lcrecords:                  * postgresql/postgresql.c (allocate_pgconn): Allocate with new         allocator.         * postgresql/postgresql.c (allocate_pgresult): Allocate PGresult         with new allocator.           * postgresql/postgresql.h (struct Lisp_PGconn): Add         lrecord_header.         * postgresql/postgresql.h (struct Lisp_PGresult): Add         lrecord_header.         * ldap/eldap.c (allocate_ldap): Allocate with new allocator.         * ldap/eldap.h (struct Lisp_LDAP): Add lrecord_header. nt/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         New configure flag: `MC_ALLOC':         * config.inc.samp: Add new flag `MC_ALLOC'.         * xemacs.mak: Add flag and configuration output for `MC_ALLOC'.         New files:         * xemacs.dsp: Add source files mc-alloc.c and mc-alloc.h.         * xemacs.mak: Add new object file mc-alloc.obj to dependencies. src/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         New configure flag: `MC_ALLOC':         * config.h.in: Add new flag `MC_ALLOC'.         New files:         * Makefile.in.in: Add new object file mc-alloc.o.         * depend: Add new files to dependencies.         * mc-alloc.c: New.         * mc-alloc.h: New.         Running the new allocator from XEmacs:         * alloc.c (deadbeef_memory): Moved to mc-alloc.c.         * emacs.c (main_1): Initialize the new allocator and add         syms_of_mc_alloc.         * symsinit.h: Add syms_of_mc_alloc.         New lrecord allocation and free functions:         * alloc.c (alloc_lrecord): New. Allocates an lrecord, includes         type checking and initializing of the lrecord_header.         * alloc.c (noseeum_alloc_lrecord): Same as above, but increments         the NOSEEUM cons counter.         * alloc.c (free_lrecord): New. Calls the finalizer and frees the         lrecord.         * lrecord.h: Add lrecord allocation prototypes and comments.         Remove old lrecord FROB block allocation:                  * alloc.c (allocate_lisp_storage): Former function to expand         heap. Not needed anymore, remove.         * alloc.c: Completely remove `Fixed-size type macros'         * alloc.c (release_breathing_space): Remove.         * alloc.c (memory_full): Remove release_breathing_space.         * alloc.c (refill_memory_reserve): Remove.         * alloc.c (TYPE_ALLOC_SIZE): Remove.         * alloc.c (DECLARE_FIXED_TYPE_ALLOC): Remove.         * alloc.c (ALLOCATE_FIXED_TYPE_FROM_BLOCK): Remove.         * alloc.c (ALLOCATE_FIXED_TYPE_1): Remove.         * alloc.c (ALLOCATE_FIXED_TYPE): Remove.         * alloc.c (NOSEEUM_ALLOCATE_FIXED_TYPE): Remove.         * alloc.c (struct Lisp_Free): Remove.         * alloc.c (LRECORD_FREE_P): Remove.         * alloc.c (MARK_LRECORD_AS_FREE): Remove.         * alloc.c (MARK_LRECORD_AS_NOT_FREE): Remove.         * alloc.c (PUT_FIXED_TYPE_ON_FREE_LIST): Remove.         * alloc.c (FREE_FIXED_TYPE): Remove.         * alloc.c (FREE_FIXED_TYPE_WHEN_NOT_IN_GC): Remove.         Allocate old lrecords with new allocator:                  * alloc.c: DECLARE_FIXED_TYPE_ALLOC removed for all lrecords         defined in alloc.c.         * alloc.c (Fcons): Allocate with new allocator.         * alloc.c (noseeum_cons): Allocate with new allocator.         * alloc.c (make_float): Allocate with new allocator.         * alloc.c (make_bignum): Allocate with new allocator.         * alloc.c (make_bignum_bg): Allocate with new allocator.         * alloc.c (make_ratio): Allocate with new allocator.         * alloc.c (make_ratio_bg): Allocate with new allocator.         * alloc.c (make_ratio_rt): Allocate with new allocator.         * alloc.c (make_bigfloat): Allocate with new allocator.         * alloc.c (make_bigfloat_bf): Allocate with new allocator.         * alloc.c (make_compiled_function): Allocate with new allocator.         * alloc.c (Fmake_symbol): Allocate with new allocator.         * alloc.c (allocate_extent): Allocate with new allocator.         * alloc.c (allocate_event): Allocate with new allocator.         * alloc.c (make_key_data): Allocate with new allocator.         * alloc.c (make_button_data): Allocate with new allocator.         * alloc.c (make_motion_data): Allocate with new allocator.         * alloc.c (make_process_data): Allocate with new allocator.         * alloc.c (make_timeout_data): Allocate with new allocator.         * alloc.c (make_magic_data): Allocate with new allocator.         * alloc.c (make_magic_eval_data): Allocate with new allocator.         * alloc.c (make_eval_data): Allocate with new allocator.         * alloc.c (make_misc_user_data): Allocate with new allocator.         * alloc.c (Fmake_marker): Allocate with new allocator.         * alloc.c (noseeum_make_marker): Allocate with new allocator.         * alloc.c (make_uninit_string): Allocate with new allocator.         * alloc.c (resize_string): Allocate with new allocator.         * alloc.c (make_string_nocopy): Allocate with new allocator.         Garbage Collection:         * alloc.c (GC_CHECK_NOT_FREE): Remove obsolete assertions.         * alloc.c (SWEEP_FIXED_TYPE_BLOCK): Remove.         * alloc.c (SWEEP_FIXED_TYPE_BLOCK_1): Remove.         * alloc.c (sweep_conses): Remove.         * alloc.c (free_cons): Use new allocator to free.         * alloc.c (sweep_compiled_functions): Remove.         * alloc.c (sweep_floats): Remove.         * alloc.c (sweep_bignums): Remove.         * alloc.c (sweep_ratios): Remove.         * alloc.c (sweep_bigfloats): Remove.         * alloc.c (sweep_symbols): Remove.         * alloc.c (sweep_extents): Remove.         * alloc.c (sweep_events): Remove.         * alloc.c (sweep_key_data): Remove.         * alloc.c (free_key_data): Use new allocator to free.         * alloc.c (sweep_button_data): Remove.         * alloc.c (free_button_data): Use new allocator to free.         * alloc.c (sweep_motion_data): Remove.         * alloc.c (free_motion_data): Use new allocator to free.         * alloc.c (sweep_process_data): Remove.         * alloc.c (free_process_data): Use new allocator to free.         * alloc.c (sweep_timeout_data): Remove.         * alloc.c (free_timeout_data): Use new allocator to free.         * alloc.c (sweep_magic_data): Remove.         * alloc.c (free_magic_data): Use new allocator to free.         * alloc.c (sweep_magic_eval_data): Remove.         * alloc.c (free_magic_eval_data): Use new allocator to free.         * alloc.c (sweep_eval_data): Remove.         * alloc.c (free_eval_data): Use new allocator to free.         * alloc.c (sweep_misc_user_data): Remove.         * alloc.c (free_misc_user_data): Use new allocator to free.         * alloc.c (sweep_markers): Remove.         * alloc.c (free_marker): Use new allocator to free.         * alloc.c (garbage_collect_1): Remove release_breathing_space.         * alloc.c (gc_sweep): Remove all the old lcrecord and lrecord         related stuff. Sweeping now works like this: compact string         chars, finalize, sweep.         * alloc.c (common_init_alloc_early): Remove old lrecord         initializations, remove breathing_space.         * emacs.c (Fdump_emacs): Remove release_breathing_space.         * lisp.h: Remove prototype for release_breathing_space.         * lisp.h: Adjust the special cons mark makros.         Lrecord Finalizer:         * alloc.c: Add finalizer to lrecord definition.         * alloc.c (finalize_string): Add finalizer for string.         * bytecode.c: Add finalizer to lrecord definition.         * bytecode.c (finalize_compiled_function): Add finalizer for         compiled function.         * marker.c: Add finalizer to lrecord definition.         * marker.c (finalize_marker): Add finalizer for marker.         These changes build the interface to mc-alloc:         * lrecord.h (MC_ALLOC_CALL_FINALIZER): Tell mc-alloc how to         finalize lrecords.         * lrecord.h (MC_ALLOC_CALL_FINALIZER_FOR_DISKSAVE): Tell         mc-alloc how to finalize for disksave.         Unify lrecords and lcrecords:         * lisp.h (struct Lisp_String): Adjust string union hack to         new lrecord header.         * lrecord.h: Adjust comments.         * lrecord.h (struct lrecord_header): The new lrecord header         includes type, lisp-readonly, free, and uid.         * lrecord.h (set_lheader_implementation): Adjust to new         lrecord_header.         * lrecord.h (struct lrecord_implementation): The field basic_p         for indication of an old lrecord is not needed anymore, remove.         * lrecord.h (MAKE_LRECORD_IMPLEMENTATION): Remove basic_p.         * lrecord.h (MAKE_EXTERNAL_LRECORD_IMPLEMENTATION): Remove         basic_p.         * lrecord.h (copy_sized_lrecord): Remove distinction between         old lrecords and lcrecords.         * lrecord.h (copy_lrecord): Remove distinction between old         lrecords and lcrecords.         * lrecord.h (zero_sized_lrecord): Remove distinction between         old lrecords and lcrecords.         * lrecord.h (zero_lrecord): Remove distinction between old         lrecords and lcrecords.         Remove lcrecords and lcrecord lists:         * alloc.c (basic_alloc_lcrecord): Not needed anymore, remove.         * alloc.c (very_old_free_lcrecord): Not needed anymore, remove.         * alloc.c (copy_lisp_object): No more distinction between         lrecords and lcrecords.         * alloc.c (all_lcrecords): Not needed anymore, remove.         * alloc.c (make_vector_internal): Allocate as lrecord.         * alloc.c (make_bit_vector_internal): Allocate as lrecord.         * alloc.c: Completely remove `lcrecord lists'.         * alloc.c (free_description): Remove.         * alloc.c (lcrecord_list_description): Remove.         * alloc.c (mark_lcrecord_list): Remove.         * alloc.c (make_lcrecord_list): Remove.         * alloc.c (alloc_managed_lcrecord): Remove.         * alloc.c (free_managed_lcrecord): Remove.         * alloc.c (alloc_automanaged_lcrecord): Remove.         * alloc.c (free_lcrecord): Remove.         * alloc.c (lcrecord_stats): Remove.         * alloc.c (tick_lcrecord_stats): Remove.         * alloc.c (disksave_object_finalization_1): Add call to         mc_finalize_for_disksave. Remove the lcrecord way to visit all         objects.         * alloc.c (kkcc_marking): Remove XD_FLAG_FREE_LISP_OBJECT         * alloc.c (sweep_lcrecords_1): Remove.         * alloc.c (common_init_alloc_early): Remove everything related         to lcrecords, remove old lrecord initializations,         * alloc.c (init_lcrecord_lists): Not needed anymore, remove.         * alloc.c (reinit_alloc_early): Remove everything related to         lcrecords.         * alloc.c (init_alloc_once_early): Remove everything related to         lcrecords.         * buffer.c (allocate_buffer): Allocate as lrecord.         * buffer.c (nuke_all_buffer_slots): Use lrecord functions.         * buffer.c (common_init_complex_vars_of_buffer): Allocate as         lrecord.         * buffer.h (struct buffer): Add lrecord_header.         * casetab.c (allocate_case_table): Allocate as lrecord.         * casetab.h (struct Lisp_Case_Table): Add lrecord_header.         * charset.h (struct Lisp_Charset): Add lrecord_header.         * chartab.c (fill_char_table): Use lrecord functions.         * chartab.c (Fmake_char_table): Allocate as lrecord.         * chartab.c (make_char_table_entry): Allocate as lrecord.         * chartab.c (copy_char_table_entry): Allocate as lrecord.         * chartab.c (Fcopy_char_table): Allocate as lrecord.         * chartab.c (put_char_table): Use lrecord functions.         * chartab.h (struct Lisp_Char_Table_Entry): Add lrecord_header.         * chartab.h (struct Lisp_Char_Table): Add lrecord_header.         * console-impl.h (struct console): Add lrecord_header.         * console-msw-impl.h (struct Lisp_Devmode): Add lrecord_header.         * console-msw-impl.h (struct mswindows_dialog_id): Add         lrecord_header.         * console.c (allocate_console): Allocate as lrecord.         * console.c (nuke_all_console_slots): Use lrecord functions.         * console.c (common_init_complex_vars_of_console): Allocate as         lrecord.         * data.c (make_weak_list): Allocate as lrecord.         * data.c (make_weak_box): Allocate as lrecord.         * data.c (make_ephemeron): Allocate as lrecord.         * database.c (struct Lisp_Database): Add lrecord_header.         * database.c (allocate_database): Allocate as lrecord.         * device-impl.h (struct device): Add lrecord_header.         * device-msw.c (allocate_devmode): Allocate as lrecord.         * device.c (nuke_all_device_slots): Use lrecord functions.         * device.c (allocate_device): Allocate as lrecord.         * dialog-msw.c (handle_question_dialog_box): Allocate as lrecord.         * elhash.c (struct Lisp_Hash_Table): Add lrecord_header.         * elhash.c (make_general_lisp_hash_table): Allocate as lrecord.         * elhash.c (Fcopy_hash_table): Allocate as lrecord.         * event-stream.c: Lcrecord lists Vcommand_builder_free_list and         Vtimeout_free_list are no longer needed. Remove.         * event-stream.c (allocate_command_builder): Allocate as lrecord.         * event-stream.c (free_command_builder): Use lrecord functions.         * event-stream.c (event_stream_generate_wakeup): Allocate as         lrecord.         * event-stream.c (event_stream_resignal_wakeup): Use lrecord         functions.         * event-stream.c (event_stream_disable_wakeup): Use lrecord         functions.         * event-stream.c (reinit_vars_of_event_stream): Lcrecord lists         remove.         * events.h (struct Lisp_Timeout): Add lrecord_header.         * events.h (struct command_builder): Add lrecord_header.         * extents-impl.h (struct extent_auxiliary): Add lrecord_header.         * extents-impl.h (struct extent_info): Add lrecord_header.         * extents.c (allocate_extent_auxiliary): Allocate as lrecord.         * extents.c (allocate_extent_info): Allocate as lrecord.         * extents.c (copy_extent): Allocate as lrecord.         * faces.c (allocate_face): Allocate as lrecord.         * faces.h (struct Lisp_Face): Add lrecord_header.         * file-coding.c (allocate_coding_system): Allocate as lrecord.         * file-coding.c (Fcopy_coding_system): Allocate as lrecord.         * file-coding.h (struct Lisp_Coding_System): Add lrecord_header.         * fns.c (Ffillarray): Allocate as lrecord.         * frame-impl.h (struct frame): Add lrecord_header.         * frame.c (nuke_all_frame_slots): Use lrecord functions.         * frame.c (allocate_frame_core): Allocate as lrecord.         * glyphs.c (allocate_image_instance): Allocate as lrecord.         * glyphs.c (Fcolorize_image_instance): Allocate as lrecord.         * glyphs.c (allocate_glyph): Allocate as lrecord.         * glyphs.h (struct Lisp_Image_Instance): Add lrecord_header.         * glyphs.h (struct Lisp_Glyph): Add lrecord_header.         * gui.c (allocate_gui_item): Allocate as lrecord.         * gui.h (struct Lisp_Gui_Item): Add lrecord_header.         * keymap.c (struct Lisp_Keymap): Add lrecord_header.         * keymap.c (make_keymap): Allocate as lrecord.         * lisp.h (struct Lisp_Vector): Add lrecord_header.         * lisp.h (struct Lisp_Bit_Vector): Add lrecord_header.         * lisp.h (struct weak_box): Add lrecord_header.         * lisp.h (struct ephemeron): Add lrecord_header.         * lisp.h (struct weak_list): Add lrecord_header.         * lrecord.h (struct lcrecord_header): Not used, remove.         * lrecord.h (struct free_lcrecord_header): Not used, remove.         * lrecord.h (struct lcrecord_list): Not needed anymore, remove.         * lrecord.h (lcrecord_list): Not needed anymore, remove.         * lrecord.h: (enum data_description_entry_flags): Remove         XD_FLAG_FREE_LISP_OBJECT.         * lstream.c: Lrecord list Vlstream_free_list remove.         * lstream.c (Lstream_new): Allocate as lrecord.         * lstream.c (Lstream_delete): Use lrecod functions.         * lstream.c (reinit_vars_of_lstream): Vlstream_free_list         initialization remove.           * lstream.h (struct lstream): Add lrecord_header.         * emacs.c (main_1): Remove lstream initialization.         * mule-charset.c (make_charset): Allocate as lrecord.         * objects-impl.h (struct Lisp_Color_Instance): Add         lrecord_header.         * objects-impl.h (struct Lisp_Font_Instance): Add lrecord_header.         * objects.c (Fmake_color_instance): Allocate as lrecord.         * objects.c (Fmake_font_instance): Allocate as lrecord.         * objects.c (reinit_vars_of_objects): Allocate as lrecord.         * opaque.c: Lcreord list Vopaque_ptr_list remove.         * opaque.c (make_opaque): Allocate as lrecord.         * opaque.c (make_opaque_ptr): Allocate as lrecord.         * opaque.c (free_opaque_ptr): Use lrecord functions.         * opaque.c (reinit_opaque_early):         * opaque.c (init_opaque_once_early): Vopaque_ptr_list         initialization remove.         * opaque.h (Lisp_Opaque): Add lrecord_header.         * opaque.h (Lisp_Opaque_Ptr): Add lrecord_header.         * emacs.c (main_1): Remove opaque variable initialization.         * print.c (default_object_printer): Use new lrecord_header.         * print.c (print_internal): Use new lrecord_header.         * print.c (debug_p4): Use new lrecord_header.         * process.c (make_process_internal): Allocate as lrecord.         * procimpl.h (struct Lisp_Process): Add lrecord_header.         * rangetab.c (Fmake_range_table): Allocate as lrecord.         * rangetab.c (Fcopy_range_table): Allocate as lrecord.         * rangetab.h (struct Lisp_Range_Table): Add lrecord_header.         * scrollbar.c (create_scrollbar_instance): Allocate as lrecord.         * scrollbar.h (struct scrollbar_instance): Add lrecord_header.         * specifier.c (make_specifier_internal): Allocate as lrecord.         * specifier.h (struct Lisp_Specifier): Add lrecord_header.         * symbols.c:         * symbols.c (Fmake_variable_buffer_local): Allocate as lrecord.         * symbols.c (Fdontusethis_set_symbol_value_handler): Allocate         as lrecord.         * symbols.c (Fdefvaralias): Allocate as lrecord.         * symeval.h (struct symbol_value_magic): Add lrecord_header.         * toolbar.c (update_toolbar_button): Allocate as lrecord.         * toolbar.h (struct toolbar_button): Add lrecord_header.         * tooltalk.c (struct Lisp_Tooltalk_Message): Add lrecord_header.         * tooltalk.c (make_tooltalk_message): Allocate as lrecord.         * tooltalk.c (struct Lisp_Tooltalk_Pattern): Add lrecord_header.         * tooltalk.c (make_tooltalk_pattern): Allocate as lrecord.         * ui-gtk.c (allocate_ffi_data): Allocate as lrecord.         * ui-gtk.c (allocate_emacs_gtk_object_data): Allocate as lrecord.         * ui-gtk.c (allocate_emacs_gtk_boxed_data): Allocate as lrecord.         * ui-gtk.h (structs): Add lrecord_header.         * window-impl.h (struct window): Add lrecord_header.         * window-impl.h (struct window_mirror): Add lrecord_header.         * window.c (allocate_window): Allocate as lrecord.         * window.c (new_window_mirror): Allocate as lrecord.         * window.c (make_dummy_parent): Allocate as lrecord.         MEMORY_USAGE_STATS         * alloc.c (fixed_type_block_overhead): Not used anymore, remove.         * buffer.c (compute_buffer_usage): Get storage size from new         allocator.         * marker.c (compute_buffer_marker_usage): Get storage size from         new allocator.         * mule-charset.c (compute_charset_usage): Get storage size from         new allocator.         * scrollbar-gtk.c (gtk_compute_scrollbar_instance_usage): Get         storage size from new allocator.         * scrollbar-msw.c (mswindows_compute_scrollbar_instance_usage):         Get storage size from new allocator.         * scrollbar-x.c (x_compute_scrollbar_instance_usage): Get         storage size from new allocator.         * scrollbar.c (compute_scrollbar_instance_usage): Get storage         size from new allocator.         * unicode.c (compute_from_unicode_table_size_1): Get storage         size from new allocator.         * unicode.c (compute_to_unicode_table_size_1): Get storage size         from new allocator.         * window.c (compute_window_mirror_usage): Get storage size from         new allocator.         * window.c (compute_window_usage): Get storage size from new         allocator.         MC_ALLOC_TYPE_STATS:         * alloc.c (alloc_lrecord): Bump lrecord count.         * alloc.c (noseeum_alloc_lrecord): Bump lrecord count.         * alloc.c (struct lrecord_stats): Storage for counts.         * alloc.c (init_lrecord_stats): Zero statistics.         * alloc.c (inc_lrecord_stats): Increase the statistic.         * alloc.c (dec_lrecord_stats): Decrease the statistic.         * alloc.c (gc_plist_hack): Used to print the information.         * alloc.c (Fgarbage_collect): Return the collected information.         * mc-alloc.c (remove_cell): Decrease lrecord count.         * mc-alloc.h: Set flag MC_ALLOC_TYPE_STATS.         * emacs.c (main_1): Init lrecord statistics.         * lrecord.h: Add prototypes for *_lrecord_stats.         Strings:         * alloc.c (Fmake_string): Initialize ascii_begin to zero.         * alloc.c (gc_count_num_short_string_in_use): Remove.         * alloc.c (gc_count_string_total_size): Remove.         * alloc.c (gc_count_short_string_total_size): Remove.         * alloc.c (debug_string_purity): Remove.         * alloc.c (debug_string_purity_print): Remove.         * alloc.c (sweep_strings): Remove.                  Remove static C-readonly Lisp objects:         * alloc.c (c_readonly): Not needed anymore, remove.         * alloc.c (GC_CHECK_LHEADER_INVARIANTS): Remove some obsolete         lheader invariants assertions.         * buffer.c (DEFVAR_BUFFER_LOCAL_1): Allocate dynamically.         * console.c (DEFVAR_CONSOLE_LOCAL_1): Allocate dynamically.         * gpmevent.c: Indirection via MC_ALLOC_Freceive_gpm_event.         * gpmevent.c (Fgpm_enable): Allocate dynamically.         * gpmevent.c (syms_of_gpmevent): Allocate dynamically.         * lisp.h (C_READONLY): Not needed anymore, remove.         * lisp.h (DEFUN): Allocate dynamically.         * lrecord.h (C_READONLY_RECORD_HEADER_P): Not needed anymore,         remove.         * lrecord.h (SET_C_READONLY_RECORD_HEADER): Not needed anymore,         remove.         * symbols.c (guts_of_unbound_marker):         * symeval.h (defsubr): Allocate dynamically.         * symeval.h (DEFSUBR_MACRO): Allocate dynamically.         * symeval.h (DEFVAR_ SYMVAL_FWD): Allocate dynamically.         * tests.c (TESTS_DEFSUBR): Allocate dynamically.         Definition of mcpro:         * lisp.h: Add mcpro prototypes.         * alloc.c (common_init_alloc_early): Add initialization for         mcpros.         * alloc.c (mcpro_description_1): New.         * alloc.c (mcpro_description): New.         * alloc.c (mcpros_description_1): New.         * alloc.c (mcpros_description): New.         * alloc.c (mcpro_one_name_description_1): New.         * alloc.c (mcpro_one_name_description): New.         * alloc.c (mcpro_names_description_1): New.         * alloc.c (mcpro_names_description): New.         * alloc.c (mcpros): New.         * alloc.c (mcpro_names): New.         * alloc.c (mcpro_1): New.         * alloc.c (mc_pro): New.         * alloc.c (garbage_collect_1): Add mcpros to root set.         Usage of mcpro:         * alloc.c (make_string_nocopy): Add string to root set.         * symbols.c (init_symbols_once_early): Add Qunbound to root set.         Changes to the Portable Dumper:                  * alloc.c (FREE_OR_REALLOC_BEGIN): Since dumped objects can be         freed with the new allocator, remove assertion for !DUMPEDP.         * dumper.c: Adjust comments, increase PDUMP_HASHSIZE.         * dumper.c (pdump_make_hash): Shift address only 2 bytes, to         avoid collisions.         * dumper.c (pdump_objects_unmark): No more mark bits within         the object, remove.         * dumper.c (mc_addr_elt): New. Element data structure for mc         hash table.         * dumper.c (pdump_mc_hash): New hash table: `lookup table'.         * dumper.c (pdump_get_mc_addr): New. Lookup for hash table.         * dumper.c (pdump_get_indirect_mc_addr): New. Lookup for         convertibles.         * dumper.c (pdump_put_mc_addr): New. Putter for hash table.         * dumper.c (pdump_dump_mc_data): New. Writes the table for         relocation at load time to the dump file.         * dumper.c (pdump_scan_lisp_objects_by_alignment): New.         Visits all dumped Lisp objects.         * dumper.c (pdump_scan_non_lisp_objects_by_alignment): New.         Visits all other dumped objects.         * dumper.c (pdump_reloc_one_mc): New. Updates all pointers         of an object by using the hash table pdump_mc_hash.         * dumper.c (pdump_reloc_one): Replaced by pdump_reloc_one_mc.         * dumper.c (pdump): Change the structure of the dump file, add         the mc post dump relocation table to dump file.         * dumper.c (pdump_load_finish): Hand all dumped objects to the         new allocator and use the mc post dump relocation table for         relocating the dumped objects at dump file load time, free not         longer used data structures.         * dumper.c (pdump_load): Free the dump file.         * dumper.h: Remove pdump_objects_unmark.         * lrecord.h (DUMPEDP): Dumped objects can be freed, remove.              DUMP_IN_EXEC:         * Makefile.in.in: Linking for and with dump in executable only if         DUMP_IN_EXEC is defined.         * config.h.in: Add new flag `DUMP_IN_EXEC'         * emacs.c: Condition dump-data.h on DUMP_IN_EXEC.         * emacs.c (main_1): Flag `-si' only works if dump image is         written into executable.         Miscellanious         * lrecord.h (enum lrecord_type): Added numbers to all types,         very handy for debugging.         * xemacs.def.in.in: Add mc-alloc functions to make them visible         to the modules.
author crestani
date Fri, 08 Apr 2005 23:11:35 +0000
parents 5e4893b16f7c
children 1e7cc382eb16
line wrap: on
line source

/* Database access routines
   Copyright (C) 1996, William M. Perry
   Copyright (C) 2001, 2002 Ben Wing.

This file is part of XEmacs.

XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

/* Written by Bill Perry */
/* Substantially rewritten by Martin Buchholz */
/* db 2.x support added by Andreas Jaeger */
/* Mule-ized 6-22-00 Ben Wing */

#include <config.h>
#include "lisp.h"

#include "sysfile.h"
#include "buffer.h"

#ifndef HAVE_DATABASE
#error HAVE_DATABASE not defined!!
#endif

#include "database.h"         /* Our include file */

#ifdef HAVE_BERKELEY_DB
/* Work around Berkeley DB's use of int types which are defined
   slightly differently in the not quite yet standard <inttypes.h>.
   See db.h for details of why we're resorting to this... */
/* glibc 2.1 doesn't have this problem with DB 2.x */
#if !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1)
#ifdef HAVE_INTTYPES_H
#define __BIT_TYPES_DEFINED__
#include <inttypes.h>
#if !defined(__FreeBSD__) && !defined(__NetBSD__)
typedef uint8_t  u_int8_t;
typedef uint16_t u_int16_t;
typedef uint32_t u_int32_t;
#ifdef WE_DONT_NEED_QUADS
typedef uint64_t u_int64_t;
#endif /* WE_DONT_NEED_QUADS */
#endif /* __FreeBSD__ */
#endif /* HAVE_INTTYPES_H */
#endif /* !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1) */
/* Berkeley DB wants __STDC__ to be defined; else if does `#define const' */
#if ! defined (__STDC__) && ! defined(__cplusplus)
#define __STDC__ 0
#endif
#include DB_H_FILE              /* Berkeley db's header file */
#ifndef DB_VERSION_MAJOR
# define DB_VERSION_MAJOR 1
#endif /* DB_VERSION_MAJOR */
#ifndef DB_VERSION_MINOR
# define DB_VERSION_MINOR 0
#endif /* DB_VERSION_MINOR */
Lisp_Object Qberkeley_db;
Lisp_Object Qhash, Qbtree, Qrecno, Qunknown;
#if DB_VERSION_MAJOR > 2
Lisp_Object Qqueue;
#endif 
#endif /* HAVE_BERKELEY_DB */

#ifdef HAVE_DBM
#include <ndbm.h>
Lisp_Object Qdbm;
#endif /* HAVE_DBM */

Lisp_Object Vdatabase_coding_system;

Lisp_Object Qdatabasep;

typedef struct
{
  Lisp_Object (*get_subtype) (Lisp_Database *);
  Lisp_Object (*get_type) (Lisp_Database *);
  Lisp_Object (*get) (Lisp_Database *, Lisp_Object);
  int (*put) (Lisp_Database *, Lisp_Object, Lisp_Object, Lisp_Object);
  int (*rem) (Lisp_Database *, Lisp_Object);
  void (*map) (Lisp_Database *, Lisp_Object);
  void (*close) (Lisp_Database *);
  Lisp_Object (*last_error) (Lisp_Database *);
} DB_FUNCS;

struct Lisp_Database
{
#ifdef MC_ALLOC
  struct lrecord_header header;
#else /* MC_ALLOC */
  struct lcrecord_header header;
#endif /* MC_ALLOC */
  Lisp_Object fname;
  int mode;
  int access_;
  int dberrno;
  int live_p;
#ifdef HAVE_DBM
  DBM *dbm_handle;
#endif
#ifdef HAVE_BERKELEY_DB
  DB *db_handle;
#endif
  DB_FUNCS *funcs;
  Lisp_Object coding_system;
};

#define XDATABASE(x) XRECORD (x, database, Lisp_Database)
#define wrap_database(p) wrap_record (p, database)
#define DATABASEP(x) RECORDP (x, database)
#define CHECK_DATABASE(x) CHECK_RECORD (x, database)
#define CONCHECK_DATABASE(x) CONCHECK_RECORD (x, database)
#define DATABASE_LIVE_P(x) (x->live_p)

#define CHECK_LIVE_DATABASE(db) do {					\
  CHECK_DATABASE (db);							\
  if (!DATABASE_LIVE_P (XDATABASE(db)))					\
    invalid_operation ("Attempting to access closed database", db);	\
} while (0)


static Lisp_Database *
allocate_database (void)
{
#ifdef MC_ALLOC
  Lisp_Database *db = alloc_lrecord_type (Lisp_Database, &lrecord_database);
#else /* not MC_ALLOC */
  Lisp_Database *db = alloc_lcrecord_type (Lisp_Database, &lrecord_database);
#endif /* not MC_ALLOC */

  db->fname = Qnil;
  db->live_p = 0;
#ifdef HAVE_BERKELEY_DB
  db->db_handle = NULL;
#endif
#ifdef HAVE_DBM
  db->dbm_handle = NULL;
#endif
  db->access_ = 0;
  db->mode = 0;
  db->dberrno = 0;
  db->coding_system = Qnil;
  return db;
}

static const struct memory_description database_description[] = {
  { XD_LISP_OBJECT, offsetof (struct Lisp_Database, fname) },
  { XD_END}
};

static Lisp_Object
mark_database (Lisp_Object object)
{
  Lisp_Database *db = XDATABASE (object);
  return db->fname;
}

static void
print_database (Lisp_Object obj, Lisp_Object printcharfun,
		int UNUSED (escapeflag))
{
  Lisp_Database *db = XDATABASE (obj);

  if (print_readably)
    printing_unreadable_object ("#<database 0x%x>", db->header.uid);

  write_fmt_string_lisp (printcharfun, "#<database \"%s\" (%s/%s/",
			 3, db->fname, db->funcs->get_type (db),
			 db->funcs->get_subtype (db));

  write_fmt_string (printcharfun, "%s) 0x%x>",
		    (!DATABASE_LIVE_P (db)    ? "closed"    :
		     (db->access_ & O_WRONLY) ? "writeonly" :
		     (db->access_ & O_RDWR)   ? "readwrite" : "readonly"),
		    db->header.uid);
}

static void
finalize_database (void *header, int for_disksave)
{
  Lisp_Database *db = (Lisp_Database *) header;

  if (for_disksave)
    {
      invalid_operation
	("Can't dump an emacs containing database objects",
	 wrap_database (db));
    }
  db->funcs->close (db);
}

DEFINE_LRECORD_IMPLEMENTATION ("database", database,
			       0, /*dumpable-flag*/
                               mark_database, print_database,
			       finalize_database, 0, 0, 
			       database_description,
			       Lisp_Database);

DEFUN ("close-database", Fclose_database, 1, 1, 0, /*
Close database DATABASE.
*/
       (database))
{
  Lisp_Database *db;
  CHECK_LIVE_DATABASE (database);
  db = XDATABASE (database);
  db->funcs->close (db);
  db->live_p = 0;
  return Qnil;
}

DEFUN ("database-type", Fdatabase_type, 1, 1, 0, /*
Return the type of database DATABASE.
*/
       (database))
{
  CHECK_DATABASE (database);

  return XDATABASE (database)->funcs->get_type (XDATABASE (database));
}

DEFUN ("database-subtype", Fdatabase_subtype, 1, 1, 0, /*
Return the subtype of database DATABASE, if any.
*/
       (database))
{
  CHECK_DATABASE (database);

  return XDATABASE (database)->funcs->get_subtype (XDATABASE (database));
}

DEFUN ("database-live-p", Fdatabase_live_p, 1, 1, 0, /*
Return t if OBJECT is an active database.
*/
       (object))
{
  return DATABASEP (object) && DATABASE_LIVE_P (XDATABASE (object)) ?
    Qt : Qnil;
}

DEFUN ("database-file-name", Fdatabase_file_name, 1, 1, 0, /*
Return the filename associated with the database DATABASE.
*/
       (database))
{
  CHECK_DATABASE (database);

  return XDATABASE (database)->fname;
}

DEFUN ("databasep", Fdatabasep, 1, 1, 0, /*
Return t if OBJECT is a database.
*/
       (object))
{
  return DATABASEP (object) ? Qt : Qnil;
}

#ifdef HAVE_DBM
static void
dbm_map (Lisp_Database *db, Lisp_Object func)
{
  datum keydatum, valdatum;
  Lisp_Object key, val;

  for (keydatum = dbm_firstkey (db->dbm_handle);
       keydatum.dptr != NULL;
       keydatum = dbm_nextkey (db->dbm_handle))
    {
      valdatum = dbm_fetch (db->dbm_handle, keydatum);
      key = make_ext_string (keydatum.dptr, keydatum.dsize,
			     db->coding_system);
      val = make_ext_string (valdatum.dptr, valdatum.dsize,
			     db->coding_system);
      call2 (func, key, val);
    }
}

static Lisp_Object
dbm_get (Lisp_Database *db, Lisp_Object key)
{
  datum keydatum, valdatum;

  TO_EXTERNAL_FORMAT (LISP_STRING, key,
		      ALLOCA, (keydatum.dptr, keydatum.dsize),
		      db->coding_system);
  valdatum = dbm_fetch (db->dbm_handle, keydatum);

  return (valdatum.dptr
	  ? make_ext_string (valdatum.dptr, valdatum.dsize,
			     db->coding_system)
	  : Qnil);
}

static int
dbm_put (Lisp_Database *db,
	 Lisp_Object key, Lisp_Object val, Lisp_Object replace)
{
  datum keydatum, valdatum;

  TO_EXTERNAL_FORMAT (LISP_STRING, val,
		      ALLOCA, (valdatum.dptr, valdatum.dsize),
		      db->coding_system);
  TO_EXTERNAL_FORMAT (LISP_STRING, key,
		      ALLOCA, (keydatum.dptr, keydatum.dsize),
		      db->coding_system);

  return !dbm_store (db->dbm_handle, keydatum, valdatum,
		     NILP (replace) ? DBM_INSERT : DBM_REPLACE);
}

static int
dbm_remove (Lisp_Database *db, Lisp_Object key)
{
  datum keydatum;

  TO_EXTERNAL_FORMAT (LISP_STRING, key,
		      ALLOCA, (keydatum.dptr, keydatum.dsize),
		      db->coding_system);

  return dbm_delete (db->dbm_handle, keydatum);
}

static Lisp_Object
dbm_type (Lisp_Database *UNUSED (db))
{
  return Qdbm;
}

static Lisp_Object
dbm_subtype (Lisp_Database *UNUSED (db))
{
  return Qnil;
}

static Lisp_Object
dbm_lasterr (Lisp_Database *db)
{
  return lisp_strerror (db->dberrno);
}

static void
dbm_closeit (Lisp_Database *db)
{
  if (db->dbm_handle)
    {
      dbm_close (db->dbm_handle);
      db->dbm_handle = NULL;
    }
}

static DB_FUNCS ndbm_func_block =
{
  dbm_subtype,
  dbm_type,
  dbm_get,
  dbm_put,
  dbm_remove,
  dbm_map,
  dbm_closeit,
  dbm_lasterr
};
#endif /* HAVE_DBM */

#ifdef HAVE_BERKELEY_DB
static Lisp_Object
berkdb_type (Lisp_Database *UNUSED (db))
{
  return Qberkeley_db;
}

static Lisp_Object
berkdb_subtype (Lisp_Database *db)
{
  if (!db->db_handle)
    return Qnil;

  switch (db->db_handle->type)
    {
    case DB_BTREE: return Qbtree;
    case DB_HASH:  return Qhash;
    case DB_RECNO: return Qrecno;
#if DB_VERSION_MAJOR > 2
    case DB_QUEUE: return Qqueue;
#endif
    default:       return Qunknown;
    }
}

static Lisp_Object
berkdb_lasterr (Lisp_Database *db)
{
  return lisp_strerror (db->dberrno);
}

static Lisp_Object
berkdb_get (Lisp_Database *db, Lisp_Object key)
{
  DBT keydatum, valdatum;
  int status = 0;

  /* DB Version 2 requires DBT's to be zeroed before use. */
  xzero (keydatum);
  xzero (valdatum);

  TO_EXTERNAL_FORMAT (LISP_STRING, key,
		      ALLOCA, (keydatum.data, keydatum.size),
		      db->coding_system);

#if DB_VERSION_MAJOR == 1
  status = db->db_handle->get (db->db_handle, &keydatum, &valdatum, 0);
#else
  status = db->db_handle->get (db->db_handle, NULL, &keydatum, &valdatum, 0);
#endif /* DB_VERSION_MAJOR */

  if (!status)
    return make_ext_string ((const Extbyte *) valdatum.data, valdatum.size,
			    db->coding_system);

#if DB_VERSION_MAJOR == 1
  db->dberrno = (status == 1) ? -1 : errno;
#else
  db->dberrno = (status < 0) ? -1 : errno;
#endif /* DB_VERSION_MAJOR */

  return Qnil;
}

static int
berkdb_put (Lisp_Database *db,
	    Lisp_Object key,
	    Lisp_Object val,
	    Lisp_Object replace)
{
  DBT keydatum, valdatum;
  int status = 0;

  /* DB Version 2 requires DBT's to be zeroed before use. */
  xzero (keydatum);
  xzero (valdatum);

  TO_EXTERNAL_FORMAT (LISP_STRING, key,
		      ALLOCA, (keydatum.data, keydatum.size),
		      db->coding_system);
  TO_EXTERNAL_FORMAT (LISP_STRING, val,
		      ALLOCA, (valdatum.data, valdatum.size),
		      db->coding_system);
#if DB_VERSION_MAJOR == 1
  status = db->db_handle->put (db->db_handle, &keydatum, &valdatum,
 			       NILP (replace) ? R_NOOVERWRITE : 0);
  db->dberrno = (status == 1) ? -1 : errno;
#else
  status = db->db_handle->put (db->db_handle, NULL, &keydatum, &valdatum,
			       NILP (replace) ? DB_NOOVERWRITE : 0);
  db->dberrno = (status < 0) ? -1 : errno;
#endif/* DV_VERSION_MAJOR = 2 */

  return status;
}

static int
berkdb_remove (Lisp_Database *db, Lisp_Object key)
{
  DBT keydatum;
  int status;

  /* DB Version 2 requires DBT's to be zeroed before use. */
  xzero (keydatum);

  TO_EXTERNAL_FORMAT (LISP_STRING, key,
		      ALLOCA, (keydatum.data, keydatum.size),
		      db->coding_system);

#if DB_VERSION_MAJOR == 1
  status = db->db_handle->del (db->db_handle, &keydatum, 0);
#else
  status = db->db_handle->del (db->db_handle, NULL, &keydatum, 0);
#endif /* DB_VERSION_MAJOR */

  if (!status)
    return 0;

#if DB_VERSION_MAJOR == 1
  db->dberrno = (status == 1) ? -1 : errno;
#else
  db->dberrno = (status < 0) ? -1 : errno;
#endif /* DB_VERSION_MAJOR */

  return 1;
}

static void
berkdb_map (Lisp_Database *db, Lisp_Object func)
{
  DBT keydatum, valdatum;
  Lisp_Object key, val;
  DB *dbp = db->db_handle;
  int status;

  xzero (keydatum);
  xzero (valdatum);

#if DB_VERSION_MAJOR == 1
  for (status = dbp->seq (dbp, &keydatum, &valdatum, R_FIRST);
       status == 0;
       status = dbp->seq (dbp, &keydatum, &valdatum, R_NEXT))
    {
      key = make_ext_string ((const Extbyte *) keydatum.data, keydatum.size,
			     db->coding_system);
      val = make_ext_string ((const Extbyte *) valdatum.data, valdatum.size,
			     db->coding_system);
      call2 (func, key, val);
    }
#else
  {
    DBC *dbcp;

#if DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >=6
    status = dbp->cursor (dbp, NULL, &dbcp, 0);
#else
    status = dbp->cursor (dbp, NULL, &dbcp);
#endif
    for (status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_FIRST);
	 status == 0;
	 status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_NEXT))
      {
	key = make_ext_string ((const Extbyte *) keydatum.data, keydatum.size,
			       db->coding_system);
	val = make_ext_string ((const Extbyte *) valdatum.data, valdatum.size,
			       db->coding_system);
	call2 (func, key, val);
      }
    dbcp->c_close (dbcp);
  }
#endif /* DB_VERSION_MAJOR */
}

static void
berkdb_close (Lisp_Database *db)
{
  if (db->db_handle)
    {
#if DB_VERSION_MAJOR == 1
      db->db_handle->sync  (db->db_handle, 0);
      db->db_handle->close (db->db_handle);
#else
      db->db_handle->sync  (db->db_handle, 0);
      db->db_handle->close (db->db_handle, 0);
#endif /* DB_VERSION_MAJOR */
      db->db_handle = NULL;
    }
}

static DB_FUNCS berk_func_block =
{
  berkdb_subtype,
  berkdb_type,
  berkdb_get,
  berkdb_put,
  berkdb_remove,
  berkdb_map,
  berkdb_close,
  berkdb_lasterr
};
#endif /* HAVE_BERKELEY_DB */

DEFUN ("database-last-error", Fdatabase_last_error, 0, 1, 0, /*
Return the last error associated with DATABASE.
*/
       (database))
{
  if (NILP (database))
    return lisp_strerror (errno);

  CHECK_DATABASE (database);

  return XDATABASE (database)->funcs->last_error (XDATABASE (database));
}

DEFUN ("open-database", Fopen_database, 1, 6, 0, /*
Return a new database object opened on FILE.
Optional arguments TYPE and SUBTYPE specify the database type.
Optional argument ACCESS specifies the access rights, which may be any
combination of 'r' 'w' and '+', for read, write, and creation flags.
Optional argument MODE gives the permissions to use when opening FILE,
and defaults to 0755.
Optional argument CODESYS specifies the coding system used to encode/decode
data passed to/from the database, and defaults to the value of the
variable `database-coding-system'.
*/
       (file, type, subtype, access_, mode, codesys))
{
  /* This function can GC */
  int modemask;
  int accessmask = 0;
  Lisp_Database *db = NULL;
  char *filename;
  struct gcpro gcpro1, gcpro2;

  CHECK_STRING (file);
  GCPRO2 (file, access_);
  file = Fexpand_file_name (file, Qnil);
  UNGCPRO;

  TO_EXTERNAL_FORMAT (LISP_STRING, file,
		      C_STRING_ALLOCA, filename,
		      Qfile_name);

  if (NILP (access_))
    {
      accessmask = O_RDWR | O_CREAT;
    }
  else
    {
      char *acc;
      CHECK_STRING (access_);
      acc = (char *) XSTRING_DATA (access_);

      if (strchr (acc, '+'))
	accessmask |= O_CREAT;

      {
	char *rp = strchr (acc, 'r');
	char *wp = strchr (acc, 'w');
	if (rp && wp) accessmask |= O_RDWR;
	else if (wp)  accessmask |= O_WRONLY;
	else          accessmask |= O_RDONLY;
      }
    }

  if (NILP (mode))
    {
      modemask = 0755;		/* rwxr-xr-x */
    }
  else
    {
      CHECK_INT (mode);
      modemask = XINT (mode);
    }

  if (NILP (codesys))
    codesys = Vdatabase_coding_system;

  codesys = get_coding_system_for_text_file (Vdatabase_coding_system, 1);

#ifdef HAVE_DBM
  if (NILP (type) || EQ (type, Qdbm))
    {
      DBM *dbase = dbm_open (filename, accessmask, modemask);
      if (!dbase)
	return Qnil;

      db = allocate_database ();
      db->dbm_handle = dbase;
      db->funcs = &ndbm_func_block;
      db->coding_system = codesys;
      goto db_done;
    }
#endif /* HAVE_DBM */

#ifdef HAVE_BERKELEY_DB
  if (NILP (type) || EQ (type, Qberkeley_db))
    {
      DBTYPE real_subtype;
      DB *dbase;
#if DB_VERSION_MAJOR != 1
      int status;
#endif

      if (EQ (subtype, Qhash) || NILP (subtype))
	real_subtype = DB_HASH;
      else if (EQ (subtype, Qbtree))
	real_subtype = DB_BTREE;
      else if (EQ (subtype, Qrecno))
	real_subtype = DB_RECNO;
#if DB_VERSION_MAJOR > 2
      else if (EQ (subtype, Qqueue))
	real_subtype = DB_QUEUE;
#endif
      else
	invalid_constant ("Unsupported subtype", subtype);

#if DB_VERSION_MAJOR == 1
      dbase = dbopen (filename, accessmask, modemask, real_subtype, NULL);
      if (!dbase)
	return Qnil;
#else
      /* Berkeley DB Version 2 has only the accessmask DB_CREATE and DB_RDONLY,
	 other flags shouldn't be set */
      if (NILP (access_))
	accessmask = DB_CREATE;
      else
	{
	  char *acc;
	  CHECK_STRING (access_);
	  acc = (char *) XSTRING_DATA (access_);
	  accessmask = 0;

	  if (strchr (acc, '+'))
	    accessmask |= DB_CREATE;

	  if (strchr (acc, 'r') && !strchr (acc, 'w'))
	    accessmask |= DB_RDONLY;
	}
#if DB_VERSION_MAJOR == 2
      status = db_open (filename, real_subtype, accessmask,
			modemask, NULL , NULL, &dbase);
      if (status)
	return Qnil;
#else
      status = db_create (&dbase, NULL, 0);
      if (status)
        return Qnil;
#if DB_VERSION_MAJOR < 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 1)
      status = dbase->open (dbase, filename, NULL,
                            real_subtype, accessmask, modemask);
#else /* DB_VERSION >= 4.1 */
      /* You can't use DB_AUTO_COMMIT unless you have a txn environment. */
      status = dbase->open (dbase, NULL, filename, NULL, real_subtype,
			    accessmask, modemask);
#endif /* DB_VERSION < 4.1 */
      if (status)
        {
          dbase->close (dbase, 0);
          return Qnil;
        }
#endif /* DB_VERSION_MAJOR > 2 */
      /* Normalize into system specific file modes. Only for printing */
      accessmask = accessmask & DB_RDONLY ? O_RDONLY : O_RDWR;
#endif /* DB_VERSION_MAJOR */

      db = allocate_database ();
      db->db_handle = dbase;
      db->funcs = &berk_func_block;
      db->coding_system = codesys;
      goto db_done;
    }
#endif /* HAVE_BERKELEY_DB */

  invalid_constant ("Unsupported database type", type);
  return Qnil;

 db_done:
  db->live_p = 1;
  db->fname = file;
  db->mode = modemask;
  db->access_ = accessmask;

  return wrap_database (db);
}

DEFUN ("put-database", Fput_database, 3, 4, 0, /*
Store KEY and VALUE in DATABASE.
If optional fourth arg REPLACE is non-nil,
replace any existing entry in the database.
*/
       (key, value, database, replace))
{
  CHECK_LIVE_DATABASE (database);
  CHECK_STRING (key);
  CHECK_STRING (value);
  {
    Lisp_Database *db = XDATABASE (database);
    int status = db->funcs->put (db, key, value, replace);
    return status ? Qt : Qnil;
  }
}

DEFUN ("remove-database", Fremove_database, 2, 2, 0, /*
Remove KEY from DATABASE.
*/
       (key, database))
{
  CHECK_LIVE_DATABASE (database);
  CHECK_STRING (key);
  {
    Lisp_Database *db = XDATABASE (database);
    int status = db->funcs->rem (db, key);
    return status ? Qt : Qnil;
  }
}

DEFUN ("get-database", Fget_database, 2, 3, 0, /*
Return value for KEY in DATABASE.
If there is no corresponding value, return DEFAULT (defaults to nil).
*/
       (key, database, default_))
{
  CHECK_LIVE_DATABASE (database);
  CHECK_STRING (key);
  {
    Lisp_Database *db = XDATABASE (database);
    Lisp_Object retval = db->funcs->get (db, key);
    return NILP (retval) ? default_ : retval;
  }
}

DEFUN ("map-database", Fmapdatabase, 2, 2, 0, /*
Map FUNCTION over entries in DATABASE, calling it with two args,
each key and value in the database.
*/
       (function, database))
{
  CHECK_LIVE_DATABASE (database);

  XDATABASE (database)->funcs->map (XDATABASE (database), function);

  return Qnil;
}

void
syms_of_database (void)
{
  INIT_LRECORD_IMPLEMENTATION (database);

  DEFSYMBOL (Qdatabasep);
#ifdef HAVE_DBM
  DEFSYMBOL (Qdbm);
#endif
#ifdef HAVE_BERKELEY_DB
  DEFSYMBOL (Qberkeley_db);
  DEFSYMBOL (Qhash);
  DEFSYMBOL (Qbtree);
  DEFSYMBOL (Qrecno);
#if DB_VERSION_MAJOR > 2
  DEFSYMBOL (Qqueue);
#endif
  DEFSYMBOL (Qunknown);
#endif

  DEFSUBR (Fopen_database);
  DEFSUBR (Fdatabasep);
  DEFSUBR (Fmapdatabase);
  DEFSUBR (Fput_database);
  DEFSUBR (Fget_database);
  DEFSUBR (Fremove_database);
  DEFSUBR (Fdatabase_type);
  DEFSUBR (Fdatabase_subtype);
  DEFSUBR (Fdatabase_last_error);
  DEFSUBR (Fdatabase_live_p);
  DEFSUBR (Fdatabase_file_name);
  DEFSUBR (Fclose_database);
}

void
vars_of_database (void)
{
#ifdef HAVE_DBM
  Fprovide (Qdbm);
#endif
#ifdef HAVE_BERKELEY_DB
  Fprovide (Qberkeley_db);
#endif

  DEFVAR_LISP ("database-coding-system", &Vdatabase_coding_system /*
Default coding system used to convert data in database files.
*/ );
  Vdatabase_coding_system = Qnative;
}