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Diffstat (limited to 'sql/ha_maria.cc')
| -rw-r--r-- | sql/ha_maria.cc | 1836 |
1 files changed, 1836 insertions, 0 deletions
diff --git a/sql/ha_maria.cc b/sql/ha_maria.cc new file mode 100644 index 00000000000..46324d0b188 --- /dev/null +++ b/sql/ha_maria.cc @@ -0,0 +1,1836 @@ +/* Copyright (C) 2006,2004 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 */ + + +#ifdef USE_PRAGMA_IMPLEMENTATION +#pragma implementation // gcc: Class implementation +#endif + +#include "mysql_priv.h" +#include <m_ctype.h> +#include <myisampack.h> +#include "ha_maria.h" +#ifndef MASTER +#include "../srclib/maria/maria_def.h" +#else +#include "../storage/maria/maria_def.h" +#include "../storage/maria/ma_rt_index.h" +#endif + +ulong maria_recover_options= HA_RECOVER_NONE; +static bool ha_maria_init(); + +/* bits in maria_recover_options */ +const char *maria_recover_names[]= +{ + "DEFAULT", "BACKUP", "FORCE", "QUICK", NullS +}; +TYPELIB maria_recover_typelib= +{ + array_elements(maria_recover_names) - 1, "", + maria_recover_names, NULL +}; + +const char *maria_stats_method_names[]= +{ + "nulls_unequal", "nulls_equal", + "nulls_ignored", NullS +}; +TYPELIB maria_stats_method_typelib= +{ + array_elements(maria_stats_method_names) - 1, "", + maria_stats_method_names, NULL +}; + + +/***************************************************************************** +** MARIA tables +*****************************************************************************/ + +static handler *maria_create_handler(TABLE_SHARE * table); + +/* MARIA handlerton */ + +handlerton maria_hton= +{ + MYSQL_HANDLERTON_INTERFACE_VERSION, + "MARIA", + SHOW_OPTION_YES, + "Transactional storage engine, optimized for long running transactions", + DB_TYPE_MARIA, + ha_maria_init, + 0, /* slot */ + 0, /* savepoint size. */ + NULL, /* close_connection */ + NULL, /* savepoint */ + NULL, /* rollback to savepoint */ + NULL, /* release savepoint */ + NULL, /* commit */ + NULL, /* rollback */ + NULL, /* prepare */ + NULL, /* recover */ + NULL, /* commit_by_xid */ + NULL, /* rollback_by_xid */ + NULL, /* create_cursor_read_view */ + NULL, /* set_cursor_read_view */ + NULL, /* close_cursor_read_view */ + /* + MARIA doesn't support transactions yet and doesn't have + transaction-dependent context: cursors can survive a commit. + */ + maria_create_handler, /* Create a new handler */ + NULL, /* Drop a database */ + maria_panic, /* Panic call */ + NULL, /* Start Consistent Snapshot */ + NULL, /* Flush logs */ + NULL, /* Show status */ + NULL, /* Partition flags */ + NULL, /* Alter table flags */ + NULL, /* Alter Tablespace */ + NULL, /* Fill Files Table */ + HTON_CAN_RECREATE, + NULL, /* binlog_func */ + NULL, /* binlog_log_query */ + NULL /* release_temporary_latches */ +}; + + +static bool ha_maria_init() +{ + return test(maria_init()); +} + +static handler *maria_create_handler(TABLE_SHARE *table) +{ + return new ha_maria(table); +} + + +// collect errors printed by maria_check routines + +static void _ma_check_print_msg(HA_CHECK *param, const char *msg_type, + const char *fmt, va_list args) +{ + THD *thd= (THD *) param->thd; + Protocol *protocol= thd->protocol; + uint length, msg_length; + char msgbuf[MARIA_MAX_MSG_BUF]; + char name[NAME_LEN * 2 + 2]; + + msg_length= my_vsnprintf(msgbuf, sizeof(msgbuf), fmt, args); + msgbuf[sizeof(msgbuf) - 1]= 0; // healthy paranoia + + DBUG_PRINT(msg_type, ("message: %s", msgbuf)); + + if (!thd->vio_ok()) + { + sql_print_error(msgbuf); + return; + } + + if (param->testflag & + (T_CREATE_MISSING_KEYS | T_SAFE_REPAIR | T_AUTO_REPAIR)) + { + my_message(ER_NOT_KEYFILE, msgbuf, MYF(MY_WME)); + return; + } + length= (uint) (strxmov(name, param->db_name, ".", param->table_name, + NullS) - name); + protocol->prepare_for_resend(); + protocol->store(name, length, system_charset_info); + protocol->store(param->op_name, system_charset_info); + protocol->store(msg_type, system_charset_info); + protocol->store(msgbuf, msg_length, system_charset_info); + if (protocol->write()) + sql_print_error("Failed on my_net_write, writing to stderr instead: %s\n", + msgbuf); + return; +} + +extern "C" { + +volatile int *_ma_killed_ptr(HA_CHECK *param) +{ + /* In theory Unsafe conversion, but should be ok for now */ + return (int*) &(((THD *) (param->thd))->killed); +} + + +void _ma_check_print_error(HA_CHECK *param, const char *fmt, ...) +{ + param->error_printed |= 1; + param->out_flag |= O_DATA_LOST; + va_list args; + va_start(args, fmt); + _ma_check_print_msg(param, "error", fmt, args); + va_end(args); +} + + +void _ma_check_print_info(HA_CHECK *param, const char *fmt, ...) +{ + va_list args; + va_start(args, fmt); + _ma_check_print_msg(param, "info", fmt, args); + va_end(args); +} + + +void _ma_check_print_warning(HA_CHECK *param, const char *fmt, ...) +{ + param->warning_printed= 1; + param->out_flag |= O_DATA_LOST; + va_list args; + va_start(args, fmt); + _ma_check_print_msg(param, "warning", fmt, args); + va_end(args); +} + +} + + +ha_maria::ha_maria(TABLE_SHARE *table_arg): +handler(&maria_hton, table_arg), file(0), +int_table_flags(HA_NULL_IN_KEY | HA_CAN_FULLTEXT | HA_CAN_SQL_HANDLER | + HA_DUPP_POS | HA_CAN_INDEX_BLOBS | HA_AUTO_PART_KEY | + HA_FILE_BASED | HA_CAN_GEOMETRY | HA_READ_RND_SAME | + HA_CAN_INSERT_DELAYED | HA_CAN_BIT_FIELD), +can_enable_indexes(1) +{} + + +static const char *ha_maria_exts[]= +{ + MARIA_NAME_IEXT, + MARIA_NAME_DEXT, + NullS +}; + + +const char **ha_maria::bas_ext() const +{ + return ha_maria_exts; +} + + +const char *ha_maria::index_type(uint key_number) +{ + return ((table->key_info[key_number].flags & HA_FULLTEXT) ? + "FULLTEXT" : + (table->key_info[key_number].flags & HA_SPATIAL) ? + "SPATIAL" : + (table->key_info[key_number].algorithm == HA_KEY_ALG_RTREE) ? + "RTREE" : "BTREE"); +} + + +#ifdef HAVE_REPLICATION +int ha_maria::net_read_dump(NET * net) +{ + int data_fd= file->dfile; + int error= 0; + + my_seek(data_fd, 0L, MY_SEEK_SET, MYF(MY_WME)); + for (;;) + { + ulong packet_len= my_net_read(net); + if (!packet_len) + break; // end of file + if (packet_len == packet_error) + { + sql_print_error("ha_maria::net_read_dump - read error "); + error= -1; + goto err; + } + if (my_write(data_fd, (byte *) net->read_pos, (uint) packet_len, + MYF(MY_WME | MY_FNABP))) + { + error= errno; + goto err; + } + } +err: + return error; +} + + +int ha_maria::dump(THD * thd, int fd) +{ + MARIA_SHARE *share= file->s; + NET *net= &thd->net; + uint blocksize= share->blocksize; + my_off_t bytes_to_read= share->state.state.data_file_length; + int data_fd= file->dfile; + byte *buf= (byte *) my_malloc(blocksize, MYF(MY_WME)); + if (!buf) + return ENOMEM; + + int error= 0; + my_seek(data_fd, 0L, MY_SEEK_SET, MYF(MY_WME)); + for (; bytes_to_read > 0;) + { + uint bytes= my_read(data_fd, buf, blocksize, MYF(MY_WME)); + if (bytes == MY_FILE_ERROR) + { + error= errno; + goto err; + } + + if (fd >= 0) + { + if (my_write(fd, buf, bytes, MYF(MY_WME | MY_FNABP))) + { + error= errno ? errno : EPIPE; + goto err; + } + } + else + { + if (my_net_write(net, (char*) buf, bytes)) + { + error= errno ? errno : EPIPE; + goto err; + } + } + bytes_to_read -= bytes; + } + + if (fd < 0) + { + if (my_net_write(net, "", 0)) + error= errno ? errno : EPIPE; + net_flush(net); + } + +err: + my_free((gptr) buf, MYF(0)); + return error; +} +#endif /* HAVE_REPLICATION */ + + +bool ha_maria::check_if_locking_is_allowed(uint sql_command, + ulong type, TABLE *table, + uint count, + bool called_by_logger_thread) +{ + /* + To be able to open and lock for reading system tables like 'mysql.proc', + when we already have some tables opened and locked, and avoid deadlocks + we have to disallow write-locking of these tables with any other tables. + */ + if (table->s->system_table && + table->reginfo.lock_type >= TL_WRITE_ALLOW_WRITE && count != 1) + { + my_error(ER_WRONG_LOCK_OF_SYSTEM_TABLE, MYF(0), table->s->db.str, + table->s->table_name.str); + return FALSE; + } + return TRUE; +} + + + /* Name is here without an extension */ + +int ha_maria::open(const char *name, int mode, uint test_if_locked) +{ + uint i; + if (!(file= maria_open(name, mode, test_if_locked | HA_OPEN_FROM_SQL_LAYER))) + return (my_errno ? my_errno : -1); + + if (test_if_locked & (HA_OPEN_IGNORE_IF_LOCKED | HA_OPEN_TMP_TABLE)) + VOID(maria_extra(file, HA_EXTRA_NO_WAIT_LOCK, 0)); + +#ifdef NOT_USED + if (!(test_if_locked & HA_OPEN_TMP_TABLE) && opt_maria_use_mmap) + VOID(maria_extra(file, HA_EXTRA_MMAP, 0)); +#endif + + info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST); + if (!(test_if_locked & HA_OPEN_WAIT_IF_LOCKED)) + VOID(maria_extra(file, HA_EXTRA_WAIT_LOCK, 0)); + if (!table->s->db_record_offset) + int_table_flags |= HA_REC_NOT_IN_SEQ; + if (file->s->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD)) + int_table_flags |= HA_HAS_CHECKSUM; + + for (i= 0; i < table->s->keys; i++) + { + struct st_plugin_int *parser= table->key_info[i].parser; + if (table->key_info[i].flags & HA_USES_PARSER) + file->s->keyinfo[i].parser= + (struct st_mysql_ftparser *) parser->plugin->info; + } + return (0); +} + + +int ha_maria::close(void) +{ + MARIA_HA *tmp= file; + file= 0; + return maria_close(tmp); +} + + +int ha_maria::write_row(byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_write_count, &LOCK_status); + + /* If we have a timestamp column, update it to the current time */ + if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT) + table->timestamp_field->set_time(); + + /* + If we have an auto_increment column and we are writing a changed row + or a new row, then update the auto_increment value in the record. + */ + if (table->next_number_field && buf == table->record[0]) + update_auto_increment(); + return maria_write(file, buf); +} + + +int ha_maria::check(THD * thd, HA_CHECK_OPT * check_opt) +{ + if (!file) + return HA_ADMIN_INTERNAL_ERROR; + int error; + HA_CHECK param; + MARIA_SHARE *share= file->s; + const char *old_proc_info= thd->proc_info; + + thd->proc_info= "Checking table"; + mariachk_init(¶m); + param.thd= thd; + param.op_name= "check"; + param.db_name= table->s->db.str; + param.table_name= table->alias; + param.testflag= check_opt->flags | T_CHECK | T_SILENT; + param.stats_method= (enum_handler_stats_method) thd->variables. + maria_stats_method; + + if (!(table->db_stat & HA_READ_ONLY)) + param.testflag |= T_STATISTICS; + param.using_global_keycache= 1; + + if (!maria_is_crashed(file) && + (((param.testflag & T_CHECK_ONLY_CHANGED) && + !(share->state.changed & (STATE_CHANGED | STATE_CRASHED | + STATE_CRASHED_ON_REPAIR)) && + share->state.open_count == 0) || + ((param.testflag & T_FAST) && (share->state.open_count == + (uint) (share->global_changed ? 1 : + 0))))) + return HA_ADMIN_ALREADY_DONE; + + error= maria_chk_status(¶m, file); // Not fatal + error= maria_chk_size(¶m, file); + if (!error) + error |= maria_chk_del(¶m, file, param.testflag); + if (!error) + error= maria_chk_key(¶m, file); + if (!error) + { + if ((!(param.testflag & T_QUICK) && + ((share->options & + (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) || + (param.testflag & (T_EXTEND | T_MEDIUM)))) || maria_is_crashed(file)) + { + uint old_testflag= param.testflag; + param.testflag |= T_MEDIUM; + if (!(error= init_io_cache(¶m.read_cache, file->dfile, + my_default_record_cache_size, READ_CACHE, + share->pack.header_length, 1, MYF(MY_WME)))) + { + error= maria_chk_data_link(¶m, file, param.testflag & T_EXTEND); + end_io_cache(&(param.read_cache)); + } + param.testflag= old_testflag; + } + } + if (!error) + { + if ((share->state.changed & (STATE_CHANGED | + STATE_CRASHED_ON_REPAIR | + STATE_CRASHED | STATE_NOT_ANALYZED)) || + (param.testflag & T_STATISTICS) || maria_is_crashed(file)) + { + file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED; + pthread_mutex_lock(&share->intern_lock); + share->state.changed &= ~(STATE_CHANGED | STATE_CRASHED | + STATE_CRASHED_ON_REPAIR); + if (!(table->db_stat & HA_READ_ONLY)) + error= maria_update_state_info(¶m, file, UPDATE_TIME | UPDATE_OPEN_COUNT | + UPDATE_STAT); + pthread_mutex_unlock(&share->intern_lock); + info(HA_STATUS_NO_LOCK | HA_STATUS_TIME | HA_STATUS_VARIABLE | + HA_STATUS_CONST); + } + } + else if (!maria_is_crashed(file) && !thd->killed) + { + maria_mark_crashed(file); + file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED; + } + + thd->proc_info= old_proc_info; + return error ? HA_ADMIN_CORRUPT : HA_ADMIN_OK; +} + + +/* + Analyze the key distribution in the table + As the table may be only locked for read, we have to take into account that + two threads may do an analyze at the same time! +*/ + +int ha_maria::analyze(THD *thd, HA_CHECK_OPT * check_opt) +{ + int error= 0; + HA_CHECK param; + MARIA_SHARE *share= file->s; + + mariachk_init(¶m); + param.thd= thd; + param.op_name= "analyze"; + param.db_name= table->s->db.str; + param.table_name= table->alias; + param.testflag= (T_FAST | T_CHECK | T_SILENT | T_STATISTICS | + T_DONT_CHECK_CHECKSUM); + param.using_global_keycache= 1; + param.stats_method= (enum_handler_stats_method) thd->variables. + maria_stats_method; + + if (!(share->state.changed & STATE_NOT_ANALYZED)) + return HA_ADMIN_ALREADY_DONE; + + error= maria_chk_key(¶m, file); + if (!error) + { + pthread_mutex_lock(&share->intern_lock); + error= maria_update_state_info(¶m, file, UPDATE_STAT); + pthread_mutex_unlock(&share->intern_lock); + } + else if (!maria_is_crashed(file) && !thd->killed) + maria_mark_crashed(file); + return error ? HA_ADMIN_CORRUPT : HA_ADMIN_OK; +} + + +int ha_maria::restore(THD * thd, HA_CHECK_OPT *check_opt) +{ + HA_CHECK_OPT tmp_check_opt; + char *backup_dir= thd->lex->backup_dir; + char src_path[FN_REFLEN], dst_path[FN_REFLEN]; + const char *table_name= table->s->table_name.str; + int error; + const char *errmsg; + DBUG_ENTER("restore"); + + if (fn_format_relative_to_data_home(src_path, table_name, backup_dir, + MARIA_NAME_DEXT)) + DBUG_RETURN(HA_ADMIN_INVALID); + + strxmov(dst_path, table->s->normalized_path.str, MARIA_NAME_DEXT, NullS); + if (my_copy(src_path, dst_path, MYF(MY_WME))) + { + error= HA_ADMIN_FAILED; + errmsg= "Failed in my_copy (Error %d)"; + goto err; + } + + tmp_check_opt.init(); + tmp_check_opt.flags |= T_VERY_SILENT | T_CALC_CHECKSUM | T_QUICK; + DBUG_RETURN(repair(thd, &tmp_check_opt)); + +err: + { + HA_CHECK param; + mariachk_init(¶m); + param.thd= thd; + param.op_name= "restore"; + param.db_name= table->s->db.str; + param.table_name= table->s->table_name.str; + param.testflag= 0; + _ma_check_print_error(¶m, errmsg, my_errno); + DBUG_RETURN(error); + } +} + + +int ha_maria::backup(THD * thd, HA_CHECK_OPT *check_opt) +{ + char *backup_dir= thd->lex->backup_dir; + char src_path[FN_REFLEN], dst_path[FN_REFLEN]; + const char *table_name= table->s->table_name.str; + int error; + const char *errmsg; + DBUG_ENTER("ha_maria::backup"); + + if (fn_format_relative_to_data_home(dst_path, table_name, backup_dir, + reg_ext)) + { + errmsg= "Failed in fn_format() for .frm file (errno: %d)"; + error= HA_ADMIN_INVALID; + goto err; + } + + strxmov(src_path, table->s->normalized_path.str, reg_ext, NullS); + if (my_copy(src_path, dst_path, + MYF(MY_WME | MY_HOLD_ORIGINAL_MODES | MY_DONT_OVERWRITE_FILE))) + { + error= HA_ADMIN_FAILED; + errmsg= "Failed copying .frm file (errno: %d)"; + goto err; + } + + /* Change extension */ + if (fn_format_relative_to_data_home(dst_path, table_name, backup_dir, + MARIA_NAME_DEXT)) + { + errmsg= "Failed in fn_format() for .MYD file (errno: %d)"; + error= HA_ADMIN_INVALID; + goto err; + } + + strxmov(src_path, table->s->normalized_path.str, MARIA_NAME_DEXT, NullS); + if (my_copy(src_path, dst_path, + MYF(MY_WME | MY_HOLD_ORIGINAL_MODES | MY_DONT_OVERWRITE_FILE))) + { + errmsg= "Failed copying .MYD file (errno: %d)"; + error= HA_ADMIN_FAILED; + goto err; + } + DBUG_RETURN(HA_ADMIN_OK); + +err: + { + HA_CHECK param; + mariachk_init(¶m); + param.thd= thd; + param.op_name= "backup"; + param.db_name= table->s->db.str; + param.table_name= table->s->table_name.str; + param.testflag= 0; + _ma_check_print_error(¶m, errmsg, my_errno); + DBUG_RETURN(error); + } +} + + +int ha_maria::repair(THD * thd, HA_CHECK_OPT *check_opt) +{ + int error; + HA_CHECK param; + ha_rows start_records; + + if (!file) + return HA_ADMIN_INTERNAL_ERROR; + + mariachk_init(¶m); + param.thd= thd; + param.op_name= "repair"; + param.testflag= ((check_opt->flags & ~(T_EXTEND)) | + T_SILENT | T_FORCE_CREATE | T_CALC_CHECKSUM | + (check_opt->flags & T_EXTEND ? T_REP : T_REP_BY_SORT)); + param.sort_buffer_length= check_opt->sort_buffer_size; + start_records= file->state->records; + while ((error= repair(thd, param, 0)) && param.retry_repair) + { + param.retry_repair= 0; + if (test_all_bits(param.testflag, + (uint) (T_RETRY_WITHOUT_QUICK | T_QUICK))) + { + param.testflag &= ~T_RETRY_WITHOUT_QUICK; + sql_print_information("Retrying repair of: '%s' without quick", + table->s->path); + continue; + } + param.testflag &= ~T_QUICK; + if ((param.testflag & T_REP_BY_SORT)) + { + param.testflag= (param.testflag & ~T_REP_BY_SORT) | T_REP; + sql_print_information("Retrying repair of: '%s' with keycache", + table->s->path); + continue; + } + break; + } + if (!error && start_records != file->state->records && + !(check_opt->flags & T_VERY_SILENT)) + { + char llbuff[22], llbuff2[22]; + sql_print_information("Found %s of %s rows when repairing '%s'", + llstr(file->state->records, llbuff), + llstr(start_records, llbuff2), table->s->path); + } + return error; +} + +int ha_maria::optimize(THD * thd, HA_CHECK_OPT *check_opt) +{ + int error; + if (!file) + return HA_ADMIN_INTERNAL_ERROR; + HA_CHECK param; + + mariachk_init(¶m); + param.thd= thd; + param.op_name= "optimize"; + param.testflag= (check_opt->flags | T_SILENT | T_FORCE_CREATE | + T_REP_BY_SORT | T_STATISTICS | T_SORT_INDEX); + param.sort_buffer_length= check_opt->sort_buffer_size; + if ((error= repair(thd, param, 1)) && param.retry_repair) + { + sql_print_warning("Warning: Optimize table got errno %d, retrying", + my_errno); + param.testflag &= ~T_REP_BY_SORT; + error= repair(thd, param, 1); + } + return error; +} + + +int ha_maria::repair(THD *thd, HA_CHECK ¶m, bool optimize) +{ + int error= 0; + uint local_testflag= param.testflag; + bool optimize_done= !optimize, statistics_done= 0; + const char *old_proc_info= thd->proc_info; + char fixed_name[FN_REFLEN]; + MARIA_SHARE *share= file->s; + ha_rows rows= file->state->records; + DBUG_ENTER("ha_maria::repair"); + + param.db_name= table->s->db.str; + param.table_name= table->alias; + param.tmpfile_createflag= O_RDWR | O_TRUNC; + param.using_global_keycache= 1; + param.thd= thd; + param.tmpdir= &mysql_tmpdir_list; + param.out_flag= 0; + strmov(fixed_name, file->filename); + + // Don't lock tables if we have used LOCK TABLE + if (!thd->locked_tables && + maria_lock_database(file, table->s->tmp_table ? F_EXTRA_LCK : F_WRLCK)) + { + _ma_check_print_error(¶m, ER(ER_CANT_LOCK), my_errno); + DBUG_RETURN(HA_ADMIN_FAILED); + } + + if (!optimize || + ((file->state->del || share->state.split != file->state->records) && + (!(param.testflag & T_QUICK) || + !(share->state.changed & STATE_NOT_OPTIMIZED_KEYS)))) + { + ulonglong key_map= ((local_testflag & T_CREATE_MISSING_KEYS) ? + maria_get_mask_all_keys_active(share->base.keys) : + share->state.key_map); + uint testflag= param.testflag; + if (maria_test_if_sort_rep(file, file->state->records, key_map, 0) && + (local_testflag & T_REP_BY_SORT)) + { + local_testflag |= T_STATISTICS; + param.testflag |= T_STATISTICS; // We get this for free + statistics_done= 1; + if (thd->variables.maria_repair_threads > 1) + { + char buf[40]; + /* TODO: respect maria_repair_threads variable */ + my_snprintf(buf, 40, "Repair with %d threads", my_count_bits(key_map)); + thd->proc_info= buf; + error= maria_repair_parallel(¶m, file, fixed_name, + param.testflag & T_QUICK); + thd->proc_info= "Repair done"; // to reset proc_info, as + // it was pointing to local buffer + } + else + { + thd->proc_info= "Repair by sorting"; + error= maria_repair_by_sort(¶m, file, fixed_name, + param.testflag & T_QUICK); + } + } + else + { + thd->proc_info= "Repair with keycache"; + param.testflag &= ~T_REP_BY_SORT; + error= maria_repair(¶m, file, fixed_name, param.testflag & T_QUICK); + } + param.testflag= testflag; + optimize_done= 1; + } + if (!error) + { + if ((local_testflag & T_SORT_INDEX) && + (share->state.changed & STATE_NOT_SORTED_PAGES)) + { + optimize_done= 1; + thd->proc_info= "Sorting index"; + error= maria_sort_index(¶m, file, fixed_name); + } + if (!statistics_done && (local_testflag & T_STATISTICS)) + { + if (share->state.changed & STATE_NOT_ANALYZED) + { + optimize_done= 1; + thd->proc_info= "Analyzing"; + error= maria_chk_key(¶m, file); + } + else + local_testflag &= ~T_STATISTICS; // Don't update statistics + } + } + thd->proc_info= "Saving state"; + if (!error) + { + if ((share->state.changed & STATE_CHANGED) || maria_is_crashed(file)) + { + share->state.changed &= ~(STATE_CHANGED | STATE_CRASHED | + STATE_CRASHED_ON_REPAIR); + file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED; + } + /* + the following 'if', thought conceptually wrong, + is a useful optimization nevertheless. + */ + if (file->state != &file->s->state.state) + file->s->state.state= *file->state; + if (file->s->base.auto_key) + _ma_update_auto_increment_key(¶m, file, 1); + if (optimize_done) + error= maria_update_state_info(¶m, file, + UPDATE_TIME | UPDATE_OPEN_COUNT | + (local_testflag & + T_STATISTICS ? UPDATE_STAT : 0)); + info(HA_STATUS_NO_LOCK | HA_STATUS_TIME | HA_STATUS_VARIABLE | + HA_STATUS_CONST); + if (rows != file->state->records && !(param.testflag & T_VERY_SILENT)) + { + char llbuff[22], llbuff2[22]; + _ma_check_print_warning(¶m, "Number of rows changed from %s to %s", + llstr(rows, llbuff), + llstr(file->state->records, llbuff2)); + } + } + else + { + maria_mark_crashed_on_repair(file); + file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED; + maria_update_state_info(¶m, file, 0); + } + thd->proc_info= old_proc_info; + if (!thd->locked_tables) + maria_lock_database(file, F_UNLCK); + DBUG_RETURN(error ? HA_ADMIN_FAILED : + !optimize_done ? HA_ADMIN_ALREADY_DONE : HA_ADMIN_OK); +} + + +/* + Assign table indexes to a specific key cache. +*/ + +int ha_maria::assign_to_keycache(THD * thd, HA_CHECK_OPT *check_opt) +{ + KEY_CACHE *new_key_cache= check_opt->key_cache; + const char *errmsg= 0; + int error= HA_ADMIN_OK; + ulonglong map= ~(ulonglong) 0; + TABLE_LIST *table_list= table->pos_in_table_list; + DBUG_ENTER("ha_maria::assign_to_keycache"); + + /* Check validity of the index references */ + if (table_list->use_index) + { + /* We only come here when the user did specify an index map */ + key_map kmap; + if (get_key_map_from_key_list(&kmap, table, table_list->use_index)) + { + errmsg= thd->net.last_error; + error= HA_ADMIN_FAILED; + goto err; + } + map= kmap.to_ulonglong(); + } + + if ((error= maria_assign_to_key_cache(file, map, new_key_cache))) + { + char buf[STRING_BUFFER_USUAL_SIZE]; + my_snprintf(buf, sizeof(buf), + "Failed to flush to index file (errno: %d)", error); + errmsg= buf; + error= HA_ADMIN_CORRUPT; + } + +err: + if (error != HA_ADMIN_OK) + { + /* Send error to user */ + HA_CHECK param; + mariachk_init(¶m); + param.thd= thd; + param.op_name= "assign_to_keycache"; + param.db_name= table->s->db.str; + param.table_name= table->s->table_name.str; + param.testflag= 0; + _ma_check_print_error(¶m, errmsg); + } + DBUG_RETURN(error); +} + + +/* + Preload pages of the index file for a table into the key cache. +*/ + +int ha_maria::preload_keys(THD * thd, HA_CHECK_OPT *check_opt) +{ + int error; + const char *errmsg; + ulonglong map= ~(ulonglong) 0; + TABLE_LIST *table_list= table->pos_in_table_list; + my_bool ignore_leaves= table_list->ignore_leaves; + + DBUG_ENTER("ha_maria::preload_keys"); + + /* Check validity of the index references */ + if (table_list->use_index) + { + key_map kmap; + get_key_map_from_key_list(&kmap, table, table_list->use_index); + if (kmap.is_set_all()) + { + errmsg= thd->net.last_error; + error= HA_ADMIN_FAILED; + goto err; + } + if (!kmap.is_clear_all()) + map= kmap.to_ulonglong(); + } + + maria_extra(file, HA_EXTRA_PRELOAD_BUFFER_SIZE, + (void*) &thd->variables.preload_buff_size); + + if ((error= maria_preload(file, map, ignore_leaves))) + { + switch (error) { + case HA_ERR_NON_UNIQUE_BLOCK_SIZE: + errmsg= "Indexes use different block sizes"; + break; + case HA_ERR_OUT_OF_MEM: + errmsg= "Failed to allocate buffer"; + break; + default: + char buf[ERRMSGSIZE + 20]; + my_snprintf(buf, ERRMSGSIZE, + "Failed to read from index file (errno: %d)", my_errno); + errmsg= buf; + } + error= HA_ADMIN_FAILED; + goto err; + } + + DBUG_RETURN(HA_ADMIN_OK); + +err: + { + HA_CHECK param; + mariachk_init(¶m); + param.thd= thd; + param.op_name= "preload_keys"; + param.db_name= table->s->db.str; + param.table_name= table->s->table_name.str; + param.testflag= 0; + _ma_check_print_error(¶m, errmsg); + DBUG_RETURN(error); + } +} + + +/* + Disable indexes, making it persistent if requested. + + SYNOPSIS + disable_indexes() + mode mode of operation: + HA_KEY_SWITCH_NONUNIQ disable all non-unique keys + HA_KEY_SWITCH_ALL disable all keys + HA_KEY_SWITCH_NONUNIQ_SAVE dis. non-uni. and make persistent + HA_KEY_SWITCH_ALL_SAVE dis. all keys and make persistent + + IMPLEMENTATION + HA_KEY_SWITCH_NONUNIQ is not implemented. + HA_KEY_SWITCH_ALL_SAVE is not implemented. + + RETURN + 0 ok + HA_ERR_WRONG_COMMAND mode not implemented. +*/ + +int ha_maria::disable_indexes(uint mode) +{ + int error; + + if (mode == HA_KEY_SWITCH_ALL) + { + /* call a storage engine function to switch the key map */ + error= maria_disable_indexes(file); + } + else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE) + { + maria_extra(file, HA_EXTRA_NO_KEYS, 0); + info(HA_STATUS_CONST); // Read new key info + error= 0; + } + else + { + /* mode not implemented */ + error= HA_ERR_WRONG_COMMAND; + } + return error; +} + + +/* + Enable indexes, making it persistent if requested. + + SYNOPSIS + enable_indexes() + mode mode of operation: + HA_KEY_SWITCH_NONUNIQ enable all non-unique keys + HA_KEY_SWITCH_ALL enable all keys + HA_KEY_SWITCH_NONUNIQ_SAVE en. non-uni. and make persistent + HA_KEY_SWITCH_ALL_SAVE en. all keys and make persistent + + DESCRIPTION + Enable indexes, which might have been disabled by disable_index() before. + The modes without _SAVE work only if both data and indexes are empty, + since the MARIA repair would enable them persistently. + To be sure in these cases, call handler::delete_all_rows() before. + + IMPLEMENTATION + HA_KEY_SWITCH_NONUNIQ is not implemented. + HA_KEY_SWITCH_ALL_SAVE is not implemented. + + RETURN + 0 ok + !=0 Error, among others: + HA_ERR_CRASHED data or index is non-empty. Delete all rows and retry. + HA_ERR_WRONG_COMMAND mode not implemented. +*/ + +int ha_maria::enable_indexes(uint mode) +{ + int error; + + if (maria_is_all_keys_active(file->s->state.key_map, file->s->base.keys)) + { + /* All indexes are enabled already. */ + return 0; + } + + if (mode == HA_KEY_SWITCH_ALL) + { + error= maria_enable_indexes(file); + /* + Do not try to repair on error, + as this could make the enabled state persistent, + but mode==HA_KEY_SWITCH_ALL forbids it. + */ + } + else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE) + { + THD *thd= current_thd; + HA_CHECK param; + const char *save_proc_info= thd->proc_info; + thd->proc_info= "Creating index"; + mariachk_init(¶m); + param.op_name= "recreating_index"; + param.testflag= (T_SILENT | T_REP_BY_SORT | T_QUICK | + T_CREATE_MISSING_KEYS); + param.myf_rw &= ~MY_WAIT_IF_FULL; + param.sort_buffer_length= thd->variables.maria_sort_buff_size; + param.stats_method= (enum_handler_stats_method) thd->variables. + maria_stats_method; + param.tmpdir= &mysql_tmpdir_list; + if ((error= (repair(thd, param, 0) != HA_ADMIN_OK)) && param.retry_repair) + { + sql_print_warning("Warning: Enabling keys got errno %d, retrying", + my_errno); + /* Repairing by sort failed. Now try standard repair method. */ + param.testflag &= ~(T_REP_BY_SORT | T_QUICK); + error= (repair(thd, param, 0) != HA_ADMIN_OK); + /* + If the standard repair succeeded, clear all error messages which + might have been set by the first repair. They can still be seen + with SHOW WARNINGS then. + */ + if (!error) + thd->clear_error(); + } + info(HA_STATUS_CONST); + thd->proc_info= save_proc_info; + } + else + { + /* mode not implemented */ + error= HA_ERR_WRONG_COMMAND; + } + return error; +} + + +/* + Test if indexes are disabled. + + + SYNOPSIS + indexes_are_disabled() + no parameters + + + RETURN + 0 indexes are not disabled + 1 all indexes are disabled + [2 non-unique indexes are disabled - NOT YET IMPLEMENTED] +*/ + +int ha_maria::indexes_are_disabled(void) +{ + return maria_indexes_are_disabled(file); +} + + +/* + prepare for a many-rows insert operation + e.g. - disable indexes (if they can be recreated fast) or + activate special bulk-insert optimizations + + SYNOPSIS + start_bulk_insert(rows) + rows Rows to be inserted + 0 if we don't know + + NOTICE + Do not forget to call end_bulk_insert() later! +*/ + +void ha_maria::start_bulk_insert(ha_rows rows) +{ + DBUG_ENTER("ha_maria::start_bulk_insert"); + THD *thd= current_thd; + ulong size= min(thd->variables.read_buff_size, + table->s->avg_row_length * rows); + DBUG_PRINT("info", ("start_bulk_insert: rows %lu size %lu", + (ulong) rows, size)); + + /* don't enable row cache if too few rows */ + if (!rows || (rows > MARIA_MIN_ROWS_TO_USE_WRITE_CACHE)) + maria_extra(file, HA_EXTRA_WRITE_CACHE, (void*) &size); + + can_enable_indexes= maria_is_all_keys_active(file->s->state.key_map, + file->s->base.keys); + + if (!(specialflag & SPECIAL_SAFE_MODE)) + { + /* + Only disable old index if the table was empty and we are inserting + a lot of rows. + We should not do this for only a few rows as this is slower and + we don't want to update the key statistics based of only a few rows. + */ + if (file->state->records == 0 && can_enable_indexes && + (!rows || rows >= MARIA_MIN_ROWS_TO_DISABLE_INDEXES)) + maria_disable_non_unique_index(file, rows); + else + if (!file->bulk_insert && + (!rows || rows >= MARIA_MIN_ROWS_TO_USE_BULK_INSERT)) + { + maria_init_bulk_insert(file, thd->variables.bulk_insert_buff_size, rows); + } + } + DBUG_VOID_RETURN; +} + + +/* + end special bulk-insert optimizations, + which have been activated by start_bulk_insert(). + + SYNOPSIS + end_bulk_insert() + no arguments + + RETURN + 0 OK + != 0 Error +*/ + +int ha_maria::end_bulk_insert() +{ + maria_end_bulk_insert(file); + int err= maria_extra(file, HA_EXTRA_NO_CACHE, 0); + return err ? err : can_enable_indexes ? + enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE) : 0; +} + + +bool ha_maria::check_and_repair(THD *thd) +{ + int error= 0; + int marked_crashed; + char *old_query; + uint old_query_length; + HA_CHECK_OPT check_opt; + DBUG_ENTER("ha_maria::check_and_repair"); + + check_opt.init(); + check_opt.flags= T_MEDIUM | T_AUTO_REPAIR; + // Don't use quick if deleted rows + if (!file->state->del && (maria_recover_options & HA_RECOVER_QUICK)) + check_opt.flags |= T_QUICK; + sql_print_warning("Checking table: '%s'", table->s->path); + + old_query= thd->query; + old_query_length= thd->query_length; + pthread_mutex_lock(&LOCK_thread_count); + thd->query= table->s->table_name.str; + thd->query_length= table->s->table_name.length; + pthread_mutex_unlock(&LOCK_thread_count); + + if ((marked_crashed= maria_is_crashed(file)) || check(thd, &check_opt)) + { + sql_print_warning("Recovering table: '%s'", table->s->path); + check_opt.flags= + ((maria_recover_options & HA_RECOVER_BACKUP ? T_BACKUP_DATA : 0) | + (marked_crashed ? 0 : T_QUICK) | + (maria_recover_options & HA_RECOVER_FORCE ? 0 : T_SAFE_REPAIR) | + T_AUTO_REPAIR); + if (repair(thd, &check_opt)) + error= 1; + } + pthread_mutex_lock(&LOCK_thread_count); + thd->query= old_query; + thd->query_length= old_query_length; + pthread_mutex_unlock(&LOCK_thread_count); + DBUG_RETURN(error); +} + + +bool ha_maria::is_crashed() const +{ + return (file->s->state.changed & STATE_CRASHED || + (my_disable_locking && file->s->state.open_count)); +} + + +int ha_maria::update_row(const byte * old_data, byte * new_data) +{ + statistic_increment(table->in_use->status_var.ha_update_count, &LOCK_status); + if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE) + table->timestamp_field->set_time(); + return maria_update(file, old_data, new_data); +} + + +int ha_maria::delete_row(const byte * buf) +{ + statistic_increment(table->in_use->status_var.ha_delete_count, &LOCK_status); + return maria_delete(file, buf); +} + + +int ha_maria::index_read(byte * buf, const byte * key, + uint key_len, enum ha_rkey_function find_flag) +{ + DBUG_ASSERT(inited == INDEX); + statistic_increment(table->in_use->status_var.ha_read_key_count, + &LOCK_status); + int error= maria_rkey(file, buf, active_index, key, key_len, find_flag); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::index_read_idx(byte * buf, uint index, const byte * key, + uint key_len, enum ha_rkey_function find_flag) +{ + statistic_increment(table->in_use->status_var.ha_read_key_count, + &LOCK_status); + int error= maria_rkey(file, buf, index, key, key_len, find_flag); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::index_read_last(byte * buf, const byte * key, uint key_len) +{ + DBUG_ASSERT(inited == INDEX); + statistic_increment(table->in_use->status_var.ha_read_key_count, + &LOCK_status); + int error= maria_rkey(file, buf, active_index, key, key_len, + HA_READ_PREFIX_LAST); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::index_next(byte * buf) +{ + DBUG_ASSERT(inited == INDEX); + statistic_increment(table->in_use->status_var.ha_read_next_count, + &LOCK_status); + int error= maria_rnext(file, buf, active_index); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::index_prev(byte * buf) +{ + DBUG_ASSERT(inited == INDEX); + statistic_increment(table->in_use->status_var.ha_read_prev_count, + &LOCK_status); + int error= maria_rprev(file, buf, active_index); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::index_first(byte * buf) +{ + DBUG_ASSERT(inited == INDEX); + statistic_increment(table->in_use->status_var.ha_read_first_count, + &LOCK_status); + int error= maria_rfirst(file, buf, active_index); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::index_last(byte * buf) +{ + DBUG_ASSERT(inited == INDEX); + statistic_increment(table->in_use->status_var.ha_read_last_count, + &LOCK_status); + int error= maria_rlast(file, buf, active_index); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::index_next_same(byte * buf, + const byte *key __attribute__ ((unused)), + uint length __attribute__ ((unused))) +{ + DBUG_ASSERT(inited == INDEX); + statistic_increment(table->in_use->status_var.ha_read_next_count, + &LOCK_status); + int error= maria_rnext_same(file, buf); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::rnd_init(bool scan) +{ + if (scan) + return maria_scan_init(file); + return maria_extra(file, HA_EXTRA_RESET, 0); +} + + +int ha_maria::rnd_next(byte *buf) +{ + statistic_increment(table->in_use->status_var.ha_read_rnd_next_count, + &LOCK_status); + int error= maria_scan(file, buf); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +int ha_maria::restart_rnd_next(byte *buf, byte *pos) +{ + return rnd_pos(buf, pos); +} + + +int ha_maria::rnd_pos(byte * buf, byte *pos) +{ + statistic_increment(table->in_use->status_var.ha_read_rnd_count, + &LOCK_status); + int error= maria_rrnd(file, buf, my_get_ptr(pos, ref_length)); + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +void ha_maria::position(const byte * record) +{ + my_off_t position= maria_position(file); + my_store_ptr(ref, ref_length, position); +} + + +void ha_maria::info(uint flag) +{ + MARIA_INFO info; + char name_buff[FN_REFLEN]; + + (void) maria_status(file, &info, flag); + if (flag & HA_STATUS_VARIABLE) + { + records= info.records; + deleted= info.deleted; + data_file_length= info.data_file_length; + index_file_length= info.index_file_length; + delete_length= info.delete_length; + check_time= info.check_time; + mean_rec_length= info.mean_reclength; + } + if (flag & HA_STATUS_CONST) + { + TABLE_SHARE *share= table->s; + max_data_file_length= info.max_data_file_length; + max_index_file_length= info.max_index_file_length; + create_time= info.create_time; + sortkey= info.sortkey; + ref_length= info.reflength; + share->db_options_in_use= info.options; + block_size= maria_block_size; + + /* Update share */ + if (share->tmp_table == NO_TMP_TABLE) + pthread_mutex_lock(&share->mutex); + share->keys_in_use.set_prefix(share->keys); + share->keys_in_use.intersect_extended(info.key_map); + share->keys_for_keyread.intersect(share->keys_in_use); + share->db_record_offset= info.record_offset; + if (share->key_parts) + memcpy((char*) table->key_info[0].rec_per_key, + (char*) info.rec_per_key, + sizeof(table->key_info[0].rec_per_key) * share->key_parts); + if (share->tmp_table == NO_TMP_TABLE) + pthread_mutex_unlock(&share->mutex); + + /* + Set data_file_name and index_file_name to point at the symlink value + if table is symlinked (Ie; Real name is not same as generated name) + */ + data_file_name= index_file_name= 0; + fn_format(name_buff, file->filename, "", MARIA_NAME_DEXT, MY_APPEND_EXT); + if (strcmp(name_buff, info.data_file_name)) + data_file_name= info.data_file_name; + fn_format(name_buff, file->filename, "", MARIA_NAME_IEXT, MY_APPEND_EXT); + if (strcmp(name_buff, info.index_file_name)) + index_file_name= info.index_file_name; + } + if (flag & HA_STATUS_ERRKEY) + { + errkey= info.errkey; + my_store_ptr(dupp_ref, ref_length, info.dupp_key_pos); + } + /* Faster to always update, than to do it based on flag */ + update_time= info.update_time; + auto_increment_value= info.auto_increment; +} + + +int ha_maria::extra(enum ha_extra_function operation) +{ + if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_KEYREAD) + return 0; + return maria_extra(file, operation, 0); +} + + +/* To be used with WRITE_CACHE and EXTRA_CACHE */ + +int ha_maria::extra_opt(enum ha_extra_function operation, ulong cache_size) +{ + if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_WRITE_CACHE) + return 0; + return maria_extra(file, operation, (void*) &cache_size); +} + + +int ha_maria::delete_all_rows() +{ + return maria_delete_all_rows(file); +} + + +int ha_maria::delete_table(const char *name) +{ + return maria_delete_table(name); +} + + +int ha_maria::external_lock(THD *thd, int lock_type) +{ + return maria_lock_database(file, !table->s->tmp_table ? + lock_type : ((lock_type == F_UNLCK) ? + F_UNLCK : F_EXTRA_LCK)); +} + + +THR_LOCK_DATA **ha_maria::store_lock(THD *thd, + THR_LOCK_DATA **to, + enum thr_lock_type lock_type) +{ + if (lock_type != TL_IGNORE && file->lock.type == TL_UNLOCK) + file->lock.type= lock_type; + *to++= &file->lock; + return to; +} + + +void ha_maria::update_create_info(HA_CREATE_INFO *create_info) +{ + ha_maria::info(HA_STATUS_AUTO | HA_STATUS_CONST); + if (!(create_info->used_fields & HA_CREATE_USED_AUTO)) + { + create_info->auto_increment_value= auto_increment_value; + } + create_info->data_file_name= data_file_name; + create_info->index_file_name= index_file_name; +} + + +int ha_maria::create(const char *name, register TABLE *table_arg, + HA_CREATE_INFO *info) +{ + int error; + uint i, j, recpos, minpos, fieldpos, temp_length, length, create_flags= 0; + bool found_real_auto_increment= 0; + enum ha_base_keytype type; + char buff[FN_REFLEN]; + KEY *pos; + MARIA_KEYDEF *keydef; + MARIA_COLUMNDEF *recinfo, *recinfo_pos; + HA_KEYSEG *keyseg; + TABLE_SHARE *share= table_arg->s; + uint options= share->db_options_in_use; + DBUG_ENTER("ha_maria::create"); + + type= HA_KEYTYPE_BINARY; // Keep compiler happy + if (!(my_multi_malloc(MYF(MY_WME), + &recinfo, (share->fields * 2 + 2) * + sizeof(MARIA_COLUMNDEF), + &keydef, share->keys * sizeof(MARIA_KEYDEF), + &keyseg, + ((share->key_parts + share->keys) * + sizeof(HA_KEYSEG)), NullS))) + DBUG_RETURN(HA_ERR_OUT_OF_MEM); + + pos= table_arg->key_info; + for (i= 0; i < share->keys; i++, pos++) + { + if (pos->flags & HA_USES_PARSER) + create_flags |= HA_CREATE_RELIES_ON_SQL_LAYER; + keydef[i].flag= (pos->flags & (HA_NOSAME | HA_FULLTEXT | HA_SPATIAL)); + keydef[i].key_alg= pos->algorithm == HA_KEY_ALG_UNDEF ? + (pos->flags & HA_SPATIAL ? HA_KEY_ALG_RTREE : HA_KEY_ALG_BTREE) : + pos->algorithm; + keydef[i].seg= keyseg; + keydef[i].keysegs= pos->key_parts; + for (j= 0; j < pos->key_parts; j++) + { + Field *field= pos->key_part[j].field; + type= field->key_type(); + keydef[i].seg[j].flag= pos->key_part[j].key_part_flag; + + if (options & HA_OPTION_PACK_KEYS || + (pos->flags & (HA_PACK_KEY | HA_BINARY_PACK_KEY | + HA_SPACE_PACK_USED))) + { + if (pos->key_part[j].length > 8 && + (type == HA_KEYTYPE_TEXT || + type == HA_KEYTYPE_NUM || + (type == HA_KEYTYPE_BINARY && !field->zero_pack()))) + { + /* No blobs here */ + if (j == 0) + keydef[i].flag |= HA_PACK_KEY; + if (!(field->flags & ZEROFILL_FLAG) && + (field->type() == MYSQL_TYPE_STRING || + field->type() == MYSQL_TYPE_VAR_STRING || + ((int) (pos->key_part[j].length - field->decimals())) >= 4)) + keydef[i].seg[j].flag |= HA_SPACE_PACK; + } + else if (j == 0 && (!(pos->flags & HA_NOSAME) || pos->key_length > 16)) + keydef[i].flag |= HA_BINARY_PACK_KEY; + } + keydef[i].seg[j].type= (int) type; + keydef[i].seg[j].start= pos->key_part[j].offset; + keydef[i].seg[j].length= pos->key_part[j].length; + keydef[i].seg[j].bit_start= keydef[i].seg[j].bit_end= + keydef[i].seg[j].bit_length= 0; + keydef[i].seg[j].bit_pos= 0; + keydef[i].seg[j].language= field->charset()->number; + + if (field->null_ptr) + { + keydef[i].seg[j].null_bit= field->null_bit; + keydef[i].seg[j].null_pos= (uint) (field->null_ptr - + (uchar *) table_arg->record[0]); + } + else + { + keydef[i].seg[j].null_bit= 0; + keydef[i].seg[j].null_pos= 0; + } + if (field->type() == FIELD_TYPE_BLOB || + field->type() == FIELD_TYPE_GEOMETRY) + { + keydef[i].seg[j].flag |= HA_BLOB_PART; + /* save number of bytes used to pack length */ + keydef[i].seg[j].bit_start= (uint) (field->pack_length() - + share->blob_ptr_size); + } + else if (field->type() == FIELD_TYPE_BIT) + { + keydef[i].seg[j].bit_length= ((Field_bit *) field)->bit_len; + keydef[i].seg[j].bit_start= ((Field_bit *) field)->bit_ofs; + keydef[i].seg[j].bit_pos= (uint) (((Field_bit *) field)->bit_ptr - + (uchar *) table_arg->record[0]); + } + } + keyseg += pos->key_parts; + } + + if (table_arg->found_next_number_field) + { + keydef[share->next_number_index].flag |= HA_AUTO_KEY; + found_real_auto_increment= share->next_number_key_offset == 0; + } + + recpos= 0; + recinfo_pos= recinfo; + while (recpos < (uint) share->reclength) + { + Field **field, *found= 0; + minpos= share->reclength; + length= 0; + + for (field= table_arg->field; *field; field++) + { + if ((fieldpos= (*field)->offset()) >= recpos && fieldpos <= minpos) + { + /* skip null fields */ + if (!(temp_length= (*field)->pack_length_in_rec())) + continue; /* Skip null-fields */ + if (!found || fieldpos < minpos || + (fieldpos == minpos && temp_length < length)) + { + minpos= fieldpos; + found= *field; + length= temp_length; + } + } + } + DBUG_PRINT("loop", ("found: 0x%lx recpos: %d minpos: %d length: %d", + found, recpos, minpos, length)); + if (recpos != minpos) + { // Reserved space (Null bits?) + bzero((char*) recinfo_pos, sizeof(*recinfo_pos)); + recinfo_pos->type= (int) FIELD_NORMAL; + recinfo_pos++->length= (uint16) (minpos - recpos); + } + if (!found) + break; + + if (found->flags & BLOB_FLAG) + recinfo_pos->type= (int) FIELD_BLOB; + else if (found->type() == MYSQL_TYPE_VARCHAR) + recinfo_pos->type= FIELD_VARCHAR; + else if (!(options & HA_OPTION_PACK_RECORD)) + recinfo_pos->type= (int) FIELD_NORMAL; + else if (found->zero_pack()) + recinfo_pos->type= (int) FIELD_SKIP_ZERO; + else + recinfo_pos->type= (int) ((length <= 3 || + (found->flags & ZEROFILL_FLAG)) ? + FIELD_NORMAL : + found->type() == MYSQL_TYPE_STRING || + found->type() == MYSQL_TYPE_VAR_STRING ? + FIELD_SKIP_ENDSPACE : FIELD_SKIP_PRESPACE); + if (found->null_ptr) + { + recinfo_pos->null_bit= found->null_bit; + recinfo_pos->null_pos= (uint) (found->null_ptr - + (uchar *) table_arg->record[0]); + } + else + { + recinfo_pos->null_bit= 0; + recinfo_pos->null_pos= 0; + } + (recinfo_pos++)->length= (uint16) length; + recpos= minpos + length; + DBUG_PRINT("loop", ("length: %d type: %d", + recinfo_pos[-1].length, recinfo_pos[-1].type)); + + } + MARIA_CREATE_INFO create_info; + bzero((char*) &create_info, sizeof(create_info)); + create_info.max_rows= share->max_rows; + create_info.reloc_rows= share->min_rows; + create_info.with_auto_increment= found_real_auto_increment; + create_info.auto_increment= (info->auto_increment_value ? + info->auto_increment_value - 1 : (ulonglong) 0); + create_info.data_file_length= ((ulonglong) share->max_rows * + share->avg_row_length); + create_info.data_file_name= info->data_file_name; + create_info.index_file_name= info->index_file_name; + + if (info->options & HA_LEX_CREATE_TMP_TABLE) + create_flags |= HA_CREATE_TMP_TABLE; + if (options & HA_OPTION_PACK_RECORD) + create_flags |= HA_PACK_RECORD; + if (options & HA_OPTION_CHECKSUM) + create_flags |= HA_CREATE_CHECKSUM; + if (options & HA_OPTION_DELAY_KEY_WRITE) + create_flags |= HA_CREATE_DELAY_KEY_WRITE; + + /* TODO: Check that the following fn_format is really needed */ + error= + maria_create(fn_format + (buff, name, "", "", MY_UNPACK_FILENAME | MY_APPEND_EXT), + share->keys, keydef, (uint) (recinfo_pos - recinfo), recinfo, + 0, (MARIA_UNIQUEDEF *) 0, &create_info, create_flags); + + my_free((gptr) recinfo, MYF(0)); + DBUG_RETURN(error); +} + + +int ha_maria::rename_table(const char *from, const char *to) +{ + return maria_rename(from, to); +} + + +ulonglong ha_maria::get_auto_increment() +{ + ulonglong nr; + int error; + byte key[HA_MAX_KEY_LENGTH]; + + if (!table->s->next_number_key_offset) + { // Autoincrement at key-start + ha_maria::info(HA_STATUS_AUTO); + return auto_increment_value; + } + + /* it's safe to call the following if bulk_insert isn't on */ + maria_flush_bulk_insert(file, table->s->next_number_index); + + (void) extra(HA_EXTRA_KEYREAD); + key_copy(key, table->record[0], + table->key_info + table->s->next_number_index, + table->s->next_number_key_offset); + error= maria_rkey(file, table->record[1], (int) table->s->next_number_index, + key, table->s->next_number_key_offset, HA_READ_PREFIX_LAST); + if (error) + nr= 1; + else + { + /* Get data from record[1] */ + nr= ((ulonglong) table->next_number_field-> + val_int_offset(table->s->rec_buff_length) + 1); + } + extra(HA_EXTRA_NO_KEYREAD); + return nr; +} + + +/* + Find out how many rows there is in the given range + + SYNOPSIS + records_in_range() + inx Index to use + min_key Start of range. Null pointer if from first key + max_key End of range. Null pointer if to last key + + NOTES + min_key.flag can have one of the following values: + HA_READ_KEY_EXACT Include the key in the range + HA_READ_AFTER_KEY Don't include key in range + + max_key.flag can have one of the following values: + HA_READ_BEFORE_KEY Don't include key in range + HA_READ_AFTER_KEY Include all 'end_key' values in the range + + RETURN + HA_POS_ERROR Something is wrong with the index tree. + 0 There is no matching keys in the given range + number > 0 There is approximately 'number' matching rows in + the range. +*/ + +ha_rows ha_maria::records_in_range(uint inx, key_range *min_key, + key_range *max_key) +{ + return (ha_rows) maria_records_in_range(file, (int) inx, min_key, max_key); +} + + +int ha_maria::ft_read(byte * buf) +{ + int error; + + if (!ft_handler) + return -1; + + thread_safe_increment(table->in_use->status_var.ha_read_next_count, + &LOCK_status); // why ? + + error= ft_handler->please->read_next(ft_handler, (char*) buf); + + table->status= error ? STATUS_NOT_FOUND : 0; + return error; +} + + +uint ha_maria::checksum() const +{ + return (uint) file->state->checksum; +} + + +bool ha_maria::check_if_incompatible_data(HA_CREATE_INFO *info, + uint table_changes) +{ + uint options= table->s->db_options_in_use; + + if (info->auto_increment_value != auto_increment_value || + info->data_file_name != data_file_name || + info->index_file_name != index_file_name || table_changes == IS_EQUAL_NO) + return COMPATIBLE_DATA_NO; + + if ((options & (HA_OPTION_PACK_RECORD | HA_OPTION_CHECKSUM | + HA_OPTION_DELAY_KEY_WRITE)) != + (info->table_options & (HA_OPTION_PACK_RECORD | HA_OPTION_CHECKSUM | + HA_OPTION_DELAY_KEY_WRITE))) + return COMPATIBLE_DATA_NO; + return COMPATIBLE_DATA_YES; +} |