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authorunknown <monty@mysql.com>2006-04-11 16:45:10 +0300
committerunknown <monty@mysql.com>2006-04-11 16:45:10 +0300
commitd2b8d744d9f9ab32478416885d7929ad00d3b276 (patch)
treef37f949ed49cafc9750da821af4731edf24913bc /storage/maria/ma_cache.c
parent838c7ddcccaf247214f5e39faef17d44c7f20518 (diff)
downloadmariadb-git-d2b8d744d9f9ab32478416885d7929ad00d3b276.tar.gz
Added storage/maria (based on MyISAM). WL#3245
Moved things into ft_global.h, my_handler.h and myisamchk.h to allow MyISAM and Maria to share code and defines Rename of not properly renamed functions in MyISAM and my_handler.c Renamed some MI_ defines to HA_ to allow MyISAM and Maria to share Added maria variables to mysqld.cc and set_var.cc Fixed compiler warnings BitKeeper/etc/ignore: added storage/maria/*.MAI BUILD/SETUP.sh: Compile maria by default BitKeeper/triggers/post-commit: No public maria emails. Mark changesets emails with 'maria' configure.in: Add maria include/ft_global.h: Move defines needed by maria and MyISAM here include/keycache.h: Add support for default key_cache if cache not found include/my_base.h: Add invalidator_by_filename include/my_handler.h: Remove duplicate header files Add defines that are typical for handlers (MyISAM and Maria) include/myisam.h: Move things to my_handler.h to allow Maria and MyISAM to share things (Some things needed to be shared to allow sharing of HA_CHECK structure) libmysqld/Makefile.am: Added ha_maria.cc mysys/mf_keycaches.c: Added default value for multi_key_cache_search mysys/my_handler.c: mi_compare_text -> ha_compare_text Removed compiler warnings sql/ha_myisam.cc: MI_CHECK -> HA_CHECK MI_MAX_KEY_LENGTH -> HA_MAX_KEY_LENGTH sql/ha_myisam.h: MI_CHECK -> HA_CHECK MI_MAX_KEY_LENGTH -> HA_MAX_KEY_LENGTH sql/ha_myisammrg.h: MI_CHECK -> HA_CHECK MI_MAX_KEY_LENGTH -> HA_MAX_KEY_LENGTH sql/handler.h: Added MARIA Added inclusion of my_handler.h sql/item_func.h: Remove duplicate include sql/mysql_priv.h: Added maria variables sql/mysqld.cc: Added maria sql/set_var.cc: Added maria status variables sql/set_var.h: Added maria sql/sql_class.h: Added maria status variables sql/sql_sort.h: Remove duplicate BUFFPEK struct storage/Makefile.am: Added maria storage/csv/ha_tina.cc: Removed compiler warning storage/myisam/Makefile.am: Added ft_myisam.c storage/myisam/ft_boolean_search.c: mi_compare_text -> ha_compare_text MI_MAX_KEY_BUFF -> HA_MAX_KEY_BUFF Remove compiler warnings storage/myisam/ft_nlq_search.c: mi_compare_text -> ha_compare_text storage/myisam/ft_parser.c: mi_compare_text -> ha_compare_text storage/myisam/ft_static.c: Move ft_init_search() to ft_myisam.c to make ft_static.c independent of MyISAM storage/myisam/ft_stopwords.c: mi_compare_text -> ha_compare_text storage/myisam/ft_update.c: mi_compare_text -> ha_compare_text storage/myisam/fulltext.h: Move things to ft_global.h to allow to share more things between MyISAM and Maria storage/myisam/mi_check.c: MI_CHECK -> HA_CHECK storage/myisam/mi_create.c: MI_MAX_POSSIBLE_KEY -> HA_MAX_POSSIBLE_KEY MI_MAX_KEY_BLOCK_SIZE -> HA_MAX_KEY_BLOCK_SIZE MI_MAX_KEY_SEG -> HA_MAX_KEY_SEG MI_MAX_KEY_BUFF -> HA_MAX_KEY_BUFF storage/myisam/mi_delete.c: MI_MAX_KEY_BUFF -> HA_MAX_KEY_BUFF storage/myisam/mi_delete_all.c: Remove not used variable storage/myisam/mi_dynrec.c: _my_calc_total_blob_length -> _mi_calc_total_blob_length storage/myisam/mi_key.c: _my_store_blob_length -> _mi_store_blob_length storage/myisam/mi_log.c: _my_calc_total_blob_length -> _mi_calc_total_blob_length storage/myisam/mi_open.c: MI_MAX_POSSIBLE_KEY -> HA_MAX_POSSIBLE_KEY MI_MAX_KEY_SEG -> HA_MAX_KEY_SEG MI_MAX_KEY_BUFF -> HA_MAX_KEY_BUFF my_n_base_info_read -> mi_n_base_info_read storage/myisam/mi_packrec.c: Made read_pack_length static _my_store_blob_length -> _mi_store_blob_length Remove not used variable storage/myisam/mi_range.c: MI_MAX_KEY_BUFF -> HA_MAX_KEY_BUFF storage/myisam/mi_search.c: MI_MAX_KEY_BUFF -> HA_MAX_KEY_BUFF storage/myisam/mi_test1.c: MI_MAX_KEY_LENGTH -> HA_MAX_KEY_LENGTH storage/myisam/mi_test2.c: Fixed compiler warning storage/myisam/mi_unique.c: Fixed compiler warning mi_compare_text -> ha_compare_text storage/myisam/mi_update.c: MI_MAX_KEY_BUFF -> HA_MAX_KEY_BUFF storage/myisam/mi_write.c: Rename of defines and functions storage/myisam/myisamchk.c: Rename of defines and functions storage/myisam/myisamdef.h: Remove tabs Indentation fixes (Large changes as I did run indent-ex on the file) Move some things to myisamchk.h Added missing functions that gave compiler warnings storage/myisam/myisamlog.c: Rename of defines and functions storage/myisam/myisampack.c: Remove compiler warning storage/myisam/rt_index.c: Rename of defines and functions storage/myisam/sort.c: Rename of defines, functions and structures config/ac-macros/ha_maria.m4: New BitKeeper file ``config/ac-macros/ha_maria.m4'' include/maria.h: New BitKeeper file ``include/maria.h'' include/myisamchk.h: New BitKeeper file ``include/myisamchk.h'' libmysqld/ha_maria.cc: New BitKeeper file ``libmysqld/ha_maria.cc'' mysql-test/include/have_maria.inc: New BitKeeper file ``mysql-test/include/have_maria.inc'' mysql-test/r/have_maria.require: New BitKeeper file ``mysql-test/r/have_maria.require'' mysql-test/r/maria.result: New BitKeeper file ``mysql-test/r/maria.result'' mysql-test/r/ps_maria.result: New BitKeeper file ``mysql-test/r/ps_maria.result'' mysql-test/t/maria.test: New BitKeeper file ``mysql-test/t/maria.test'' mysql-test/t/ps_maria.test: New BitKeeper file ``mysql-test/t/ps_maria.test'' sql/ha_maria.cc: New BitKeeper file ``sql/ha_maria.cc'' sql/ha_maria.h: New BitKeeper file ``sql/ha_maria.h'' storage/maria/Makefile.am: New BitKeeper file ``storage/maria/Makefile.am'' storage/maria/cmakelists.txt: New BitKeeper file ``storage/maria/cmakelists.txt'' storage/maria/ft_maria.c: New BitKeeper file ``storage/maria/ft_maria.c'' storage/maria/ma_cache.c: New BitKeeper file ``storage/maria/ma_cache.c'' storage/maria/ma_changed.c: New BitKeeper file ``storage/maria/ma_changed.c'' storage/maria/ma_check.c: New BitKeeper file ``storage/maria/ma_check.c'' storage/maria/ma_checksum.c: New BitKeeper file ``storage/maria/ma_checksum.c'' storage/maria/ma_close.c: New BitKeeper file ``storage/maria/ma_close.c'' storage/maria/ma_create.c: New BitKeeper file ``storage/maria/ma_create.c'' storage/maria/ma_dbug.c: New BitKeeper file ``storage/maria/ma_dbug.c'' storage/maria/ma_delete.c: New BitKeeper file ``storage/maria/ma_delete.c'' storage/maria/ma_delete_all.c: New BitKeeper file ``storage/maria/ma_delete_all.c'' storage/maria/ma_delete_table.c: New BitKeeper file ``storage/maria/ma_delete_table.c'' storage/maria/ma_dynrec.c: New BitKeeper file ``storage/maria/ma_dynrec.c'' storage/maria/ma_extra.c: New BitKeeper file ``storage/maria/ma_extra.c'' storage/maria/ma_ft_boolean_search.c: New BitKeeper file ``storage/maria/ma_ft_boolean_search.c'' storage/maria/ma_ft_eval.c: New BitKeeper file ``storage/maria/ma_ft_eval.c'' storage/maria/ma_ft_eval.h: New BitKeeper file ``storage/maria/ma_ft_eval.h'' storage/maria/ma_ft_nlq_search.c: New BitKeeper file ``storage/maria/ma_ft_nlq_search.c'' storage/maria/ma_ft_parser.c: New BitKeeper file ``storage/maria/ma_ft_parser.c'' storage/maria/ma_ft_stem.c: New BitKeeper file ``storage/maria/ma_ft_stem.c'' storage/maria/ma_ft_test1.c: New BitKeeper file ``storage/maria/ma_ft_test1.c'' storage/maria/ma_ft_test1.h: New BitKeeper file ``storage/maria/ma_ft_test1.h'' storage/maria/ma_ft_update.c: New BitKeeper file ``storage/maria/ma_ft_update.c'' storage/maria/ma_ftdefs.h: New BitKeeper file ``storage/maria/ma_ftdefs.h'' storage/maria/ma_fulltext.h: New BitKeeper file ``storage/maria/ma_fulltext.h'' storage/maria/ma_info.c: New BitKeeper file ``storage/maria/ma_info.c'' storage/maria/ma_init.c: New BitKeeper file ``storage/maria/ma_init.c'' storage/maria/ma_key.c: New BitKeeper file ``storage/maria/ma_key.c'' storage/maria/ma_keycache.c: New BitKeeper file ``storage/maria/ma_keycache.c'' storage/maria/ma_locking.c: New BitKeeper file ``storage/maria/ma_locking.c'' storage/maria/ma_log.c: New BitKeeper file ``storage/maria/ma_log.c'' storage/maria/ma_open.c: New BitKeeper file ``storage/maria/ma_open.c'' storage/maria/ma_packrec.c: New BitKeeper file ``storage/maria/ma_packrec.c'' storage/maria/ma_page.c: New BitKeeper file ``storage/maria/ma_page.c'' storage/maria/ma_panic.c: New BitKeeper file ``storage/maria/ma_panic.c'' storage/maria/ma_preload.c: New BitKeeper file ``storage/maria/ma_preload.c'' storage/maria/ma_range.c: New BitKeeper file ``storage/maria/ma_range.c'' storage/maria/ma_rename.c: New BitKeeper file ``storage/maria/ma_rename.c'' storage/maria/ma_rfirst.c: New BitKeeper file ``storage/maria/ma_rfirst.c'' storage/maria/ma_rkey.c: New BitKeeper file ``storage/maria/ma_rkey.c'' storage/maria/ma_rlast.c: New BitKeeper file ``storage/maria/ma_rlast.c'' storage/maria/ma_rnext.c: New BitKeeper file ``storage/maria/ma_rnext.c'' storage/maria/ma_rnext_same.c: New BitKeeper file ``storage/maria/ma_rnext_same.c'' storage/maria/ma_rprev.c: New BitKeeper file ``storage/maria/ma_rprev.c'' storage/maria/ma_rrnd.c: New BitKeeper file ``storage/maria/ma_rrnd.c'' storage/maria/ma_rsame.c: New BitKeeper file ``storage/maria/ma_rsame.c'' storage/maria/ma_rsamepos.c: New BitKeeper file ``storage/maria/ma_rsamepos.c'' storage/maria/ma_rt_index.c: New BitKeeper file ``storage/maria/ma_rt_index.c'' storage/maria/ma_rt_index.h: New BitKeeper file ``storage/maria/ma_rt_index.h'' storage/maria/ma_rt_key.c: New BitKeeper file ``storage/maria/ma_rt_key.c'' storage/maria/ma_rt_key.h: New BitKeeper file ``storage/maria/ma_rt_key.h'' storage/maria/ma_rt_mbr.c: New BitKeeper file ``storage/maria/ma_rt_mbr.c'' storage/maria/ma_rt_mbr.h: New BitKeeper file ``storage/maria/ma_rt_mbr.h'' storage/maria/ma_rt_split.c: New BitKeeper file ``storage/maria/ma_rt_split.c'' storage/maria/ma_rt_test.c: New BitKeeper file ``storage/maria/ma_rt_test.c'' storage/maria/ma_scan.c: New BitKeeper file ``storage/maria/ma_scan.c'' storage/maria/ma_search.c: New BitKeeper file ``storage/maria/ma_search.c'' storage/maria/ma_sort.c: New BitKeeper file ``storage/maria/ma_sort.c'' storage/maria/ma_sp_defs.h: New BitKeeper file ``storage/maria/ma_sp_defs.h'' storage/maria/ma_sp_key.c: New BitKeeper file ``storage/maria/ma_sp_key.c'' storage/maria/ma_sp_test.c: New BitKeeper file ``storage/maria/ma_sp_test.c'' storage/maria/ma_static.c: New BitKeeper file ``storage/maria/ma_static.c'' storage/maria/ma_statrec.c: New BitKeeper file ``storage/maria/ma_statrec.c'' storage/maria/ma_test1.c: New BitKeeper file ``storage/maria/ma_test1.c'' storage/maria/ma_test2.c: New BitKeeper file ``storage/maria/ma_test2.c'' storage/maria/ma_test3.c: New BitKeeper file ``storage/maria/ma_test3.c'' storage/maria/ma_test_all.sh: New BitKeeper file ``storage/maria/ma_test_all.sh'' storage/maria/ma_unique.c: New BitKeeper file ``storage/maria/ma_unique.c'' storage/maria/ma_update.c: New BitKeeper file ``storage/maria/ma_update.c'' storage/maria/ma_write.c: New BitKeeper file ``storage/maria/ma_write.c'' storage/maria/maria_chk.c: New BitKeeper file ``storage/maria/maria_chk.c'' storage/maria/maria_def.h: New BitKeeper file ``storage/maria/maria_def.h'' storage/maria/maria_ftdump.c: New BitKeeper file ``storage/maria/maria_ftdump.c'' storage/maria/maria_log.c: New BitKeeper file ``storage/maria/maria_log.c'' storage/maria/maria_pack.c: New BitKeeper file ``storage/maria/maria_pack.c'' storage/maria/maria_rename.sh: New BitKeeper file ``storage/maria/maria_rename.sh'' storage/maria/test_pack: New BitKeeper file ``storage/maria/test_pack'' storage/myisam/ft_myisam.c: New BitKeeper file ``storage/myisam/ft_myisam.c''
Diffstat (limited to 'storage/maria/ma_cache.c')
-rw-r--r--storage/maria/ma_cache.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/storage/maria/ma_cache.c b/storage/maria/ma_cache.c
new file mode 100644
index 00000000000..d6061c647ec
--- /dev/null
+++ b/storage/maria/ma_cache.c
@@ -0,0 +1,108 @@
+/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+ This program 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 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
+
+/*
+ Functions for read record cacheing with maria
+ Used for reading dynamic/compressed records from datafile.
+
+ Can fetch data directly from file (outside cache),
+ if reading a small chunk straight before the cached part (with possible
+ overlap).
+
+ Can be explicitly asked not to use cache (by not setting READING_NEXT in
+ flag) - useful for occasional out-of-cache reads, when the next read is
+ expected to hit the cache again.
+
+ Allows "partial read" errors in the record header (when READING_HEADER flag
+ is set) - unread part is bzero'ed
+
+ Note: out-of-cache reads are enabled for shared IO_CACHE's too,
+ as these reads will be cached by OS cache (and my_pread is always atomic)
+*/
+
+
+#include "maria_def.h"
+
+int _ma_read_cache(IO_CACHE *info, byte *buff, my_off_t pos, uint length,
+ int flag)
+{
+ uint read_length,in_buff_length;
+ my_off_t offset;
+ char *in_buff_pos;
+ DBUG_ENTER("_ma_read_cache");
+
+ if (pos < info->pos_in_file)
+ {
+ read_length=length;
+ if ((my_off_t) read_length > (my_off_t) (info->pos_in_file-pos))
+ read_length=(uint) (info->pos_in_file-pos);
+ info->seek_not_done=1;
+ if (my_pread(info->file,buff,read_length,pos,MYF(MY_NABP)))
+ DBUG_RETURN(1);
+ if (!(length-=read_length))
+ DBUG_RETURN(0);
+ pos+=read_length;
+ buff+=read_length;
+ }
+ if (pos >= info->pos_in_file &&
+ (offset= (my_off_t) (pos - info->pos_in_file)) <
+ (my_off_t) (info->read_end - info->request_pos))
+ {
+ in_buff_pos=info->request_pos+(uint) offset;
+ in_buff_length= min(length,(uint) (info->read_end-in_buff_pos));
+ memcpy(buff,info->request_pos+(uint) offset,(size_t) in_buff_length);
+ if (!(length-=in_buff_length))
+ DBUG_RETURN(0);
+ pos+=in_buff_length;
+ buff+=in_buff_length;
+ }
+ else
+ in_buff_length=0;
+ if (flag & READING_NEXT)
+ {
+ if (pos != (info->pos_in_file +
+ (uint) (info->read_end - info->request_pos)))
+ {
+ info->pos_in_file=pos; /* Force start here */
+ info->read_pos=info->read_end=info->request_pos; /* Everything used */
+ info->seek_not_done=1;
+ }
+ else
+ info->read_pos=info->read_end; /* All block used */
+ if (!(*info->read_function)(info,buff,length))
+ DBUG_RETURN(0);
+ read_length=info->error;
+ }
+ else
+ {
+ info->seek_not_done=1;
+ if ((read_length=my_pread(info->file,buff,length,pos,MYF(0))) == length)
+ DBUG_RETURN(0);
+ }
+ if (!(flag & READING_HEADER) || (int) read_length == -1 ||
+ read_length+in_buff_length < 3)
+ {
+ DBUG_PRINT("error",
+ ("Error %d reading next-multi-part block (Got %d bytes)",
+ my_errno, (int) read_length));
+ if (!my_errno || my_errno == -1)
+ my_errno=HA_ERR_WRONG_IN_RECORD;
+ DBUG_RETURN(1);
+ }
+ bzero(buff+read_length,MARIA_BLOCK_INFO_HEADER_LENGTH - in_buff_length -
+ read_length);
+ DBUG_RETURN(0);
+} /* _ma_read_cache */