innodb_extra_rseg.patch

   1 # name       : innodb_extra_rseg.patch
   2 # introduced : 11 or before
   3 # maintainer : Yasufumi
   4 #
   5 #!!! notice !!!
   6 # Any small change to this file in the main branch
   7 # should be done or reviewed by the maintainer!
   8 --- a/storage/innobase/handler/ha_innodb.cc
   9 +++ b/storage/innobase/handler/ha_innodb.cc
  10 @@ -11706,6 +11706,7 @@
  11    NULL, /* reserved */
  12    0,    /* flags */
  13  },
  14 +i_s_innodb_rseg,
  15  i_s_innodb_trx,
  16  i_s_innodb_locks,
  17  i_s_innodb_lock_waits,
  18 --- a/storage/innobase/handler/i_s.cc
  19 +++ b/storage/innobase/handler/i_s.cc
  20 @@ -45,6 +45,8 @@
  21  #include "srv0start.h" /* for srv_was_started */
  22  #include "trx0i_s.h"
  23  #include "trx0trx.h" /* for TRX_QUE_STATE_STR_MAX_LEN */
  24 +#include "trx0rseg.h" /* for trx_rseg_struct */
  25 +#include "trx0sys.h" /* for trx_sys */
  26  }
  27
  28  #define OK(expr)               \
  29 @@ -1807,3 +1809,170 @@
  30
  31         DBUG_RETURN(0);
  32  }
  33 +
  34 +/***********************************************************************
  35 +*/
  36 +static ST_FIELD_INFO   i_s_innodb_rseg_fields_info[] =
  37 +{
  38 +       {STRUCT_FLD(field_name,         "rseg_id"),
  39 +        STRUCT_FLD(field_length,       MY_INT64_NUM_DECIMAL_DIGITS),
  40 +        STRUCT_FLD(field_type,         MYSQL_TYPE_LONGLONG),
  41 +        STRUCT_FLD(value,              0),
  42 +        STRUCT_FLD(field_flags,        MY_I_S_UNSIGNED),
  43 +        STRUCT_FLD(old_name,           ""),
  44 +        STRUCT_FLD(open_method,        SKIP_OPEN_TABLE)},
  45 +
  46 +       {STRUCT_FLD(field_name,         "space_id"),
  47 +        STRUCT_FLD(field_length,       MY_INT64_NUM_DECIMAL_DIGITS),
  48 +        STRUCT_FLD(field_type,         MYSQL_TYPE_LONGLONG),
  49 +        STRUCT_FLD(value,              0),
  50 +        STRUCT_FLD(field_flags,        MY_I_S_UNSIGNED),
  51 +        STRUCT_FLD(old_name,           ""),
  52 +        STRUCT_FLD(open_method,        SKIP_OPEN_TABLE)},
  53 +
  54 +       {STRUCT_FLD(field_name,         "zip_size"),
  55 +        STRUCT_FLD(field_length,       MY_INT64_NUM_DECIMAL_DIGITS),
  56 +        STRUCT_FLD(field_type,         MYSQL_TYPE_LONGLONG),
  57 +        STRUCT_FLD(value,              0),
  58 +        STRUCT_FLD(field_flags,        MY_I_S_UNSIGNED),
  59 +        STRUCT_FLD(old_name,           ""),
  60 +        STRUCT_FLD(open_method,        SKIP_OPEN_TABLE)},
  61 +
  62 +       {STRUCT_FLD(field_name,         "page_no"),
  63 +        STRUCT_FLD(field_length,       MY_INT64_NUM_DECIMAL_DIGITS),
  64 +        STRUCT_FLD(field_type,         MYSQL_TYPE_LONGLONG),
  65 +        STRUCT_FLD(value,              0),
  66 +        STRUCT_FLD(field_flags,        MY_I_S_UNSIGNED),
  67 +        STRUCT_FLD(old_name,           ""),
  68 +        STRUCT_FLD(open_method,        SKIP_OPEN_TABLE)},
  69 +
  70 +       {STRUCT_FLD(field_name,         "max_size"),
  71 +        STRUCT_FLD(field_length,       MY_INT64_NUM_DECIMAL_DIGITS),
  72 +        STRUCT_FLD(field_type,         MYSQL_TYPE_LONGLONG),
  73 +        STRUCT_FLD(value,              0),
  74 +        STRUCT_FLD(field_flags,        MY_I_S_UNSIGNED),
  75 +        STRUCT_FLD(old_name,           ""),
  76 +        STRUCT_FLD(open_method,        SKIP_OPEN_TABLE)},
  77 +
  78 +       {STRUCT_FLD(field_name,         "curr_size"),
  79 +        STRUCT_FLD(field_length,       MY_INT64_NUM_DECIMAL_DIGITS),
  80 +        STRUCT_FLD(field_type,         MYSQL_TYPE_LONGLONG),
  81 +        STRUCT_FLD(value,              0),
  82 +        STRUCT_FLD(field_flags,        MY_I_S_UNSIGNED),
  83 +        STRUCT_FLD(old_name,           ""),
  84 +        STRUCT_FLD(open_method,        SKIP_OPEN_TABLE)},
  85 +
  86 +       END_OF_ST_FIELD_INFO
  87 +};
  88 +
  89 +static
  90 +int
  91 +i_s_innodb_rseg_fill(
  92 +/*=================*/
  93 +       THD*            thd,    /* in: thread */
  94 +       TABLE_LIST*     tables, /* in/out: tables to fill */
  95 +       COND*           cond)   /* in: condition (ignored) */
  96 +{
  97 +       TABLE*  table   = (TABLE *) tables->table;
  98 +       int     status  = 0;
  99 +       trx_rseg_t*     rseg;
 100 +
 101 +       DBUG_ENTER("i_s_innodb_rseg_fill");
 102 +
 103 +       /* deny access to non-superusers */
 104 +       if (check_global_access(thd, PROCESS_ACL)) {
 105 +
 106 +               DBUG_RETURN(0);
 107 +       }
 108 +
 109 +       RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);
 110 +
 111 +       rseg = UT_LIST_GET_FIRST(trx_sys->rseg_list);
 112 +
 113 +       while (rseg) {
 114 +               table->field[0]->store(rseg->id);
 115 +               table->field[1]->store(rseg->space);
 116 +               table->field[2]->store(rseg->zip_size);
 117 +               table->field[3]->store(rseg->page_no);
 118 +               table->field[4]->store(rseg->max_size);
 119 +               table->field[5]->store(rseg->curr_size);
 120 +
 121 +               if (schema_table_store_record(thd, table)) {
 122 +                       status = 1;
 123 +                       break;
 124 +               }
 125 +
 126 +               rseg = UT_LIST_GET_NEXT(rseg_list, rseg);
 127 +       }
 128 +
 129 +       DBUG_RETURN(status);
 130 +}
 131 +
 132 +static
 133 +int
 134 +i_s_innodb_rseg_init(
 135 +/*=================*/
 136 +                       /* out: 0 on success */
 137 +       void*   p)      /* in/out: table schema object */
 138 +{
 139 +       DBUG_ENTER("i_s_innodb_rseg_init");
 140 +       ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;
 141 +
 142 +       schema->fields_info = i_s_innodb_rseg_fields_info;
 143 +       schema->fill_table = i_s_innodb_rseg_fill;
 144 +
 145 +       DBUG_RETURN(0);
 146 +}
 147 +
 148 +UNIV_INTERN struct st_mysql_plugin     i_s_innodb_rseg =
 149 +{
 150 +       /* the plugin type (a MYSQL_XXX_PLUGIN value) */
 151 +       /* int */
 152 +       STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
 153 +
 154 +       /* pointer to type-specific plugin descriptor */
 155 +       /* void* */
 156 +       STRUCT_FLD(info, &i_s_info),
 157 +
 158 +       /* plugin name */
 159 +       /* const char* */
 160 +       STRUCT_FLD(name, "INNODB_RSEG"),
 161 +
 162 +       /* plugin author (for SHOW PLUGINS) */
 163 +       /* const char* */
 164 +       STRUCT_FLD(author, "Percona"),
 165 +
 166 +       /* general descriptive text (for SHOW PLUGINS) */
 167 +       /* const char* */
 168 +       STRUCT_FLD(descr, "InnoDB rollback segment information"),
 169 +
 170 +       /* the plugin license (PLUGIN_LICENSE_XXX) */
 171 +       /* int */
 172 +       STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
 173 +
 174 +       /* the function to invoke when plugin is loaded */
 175 +       /* int (*)(void*); */
 176 +       STRUCT_FLD(init, i_s_innodb_rseg_init),
 177 +
 178 +       /* the function to invoke when plugin is unloaded */
 179 +       /* int (*)(void*); */
 180 +       STRUCT_FLD(deinit, i_s_common_deinit),
 181 +
 182 +       /* plugin version (for SHOW PLUGINS) */
 183 +       /* unsigned int */
 184 +       STRUCT_FLD(version, 0x0100 /* 1.0 */),
 185 +
 186 +       /* struct st_mysql_show_var* */
 187 +       STRUCT_FLD(status_vars, NULL),
 188 +
 189 +       /* struct st_mysql_sys_var** */
 190 +       STRUCT_FLD(system_vars, NULL),
 191 +
 192 +       /* reserved for dependency checking */
 193 +       /* void* */
 194 +       STRUCT_FLD(__reserved1, NULL),
 195 +
 196 +       /* Plugin flags */
 197 +       /* unsigned long */
 198 +       STRUCT_FLD(flags, 0UL),
 199 +};
 200 --- a/storage/innobase/handler/i_s.h
 201 +++ b/storage/innobase/handler/i_s.h
 202 @@ -35,5 +35,6 @@
 203  extern struct st_mysql_plugin  i_s_innodb_cmp_reset;
 204  extern struct st_mysql_plugin  i_s_innodb_cmpmem;
 205  extern struct st_mysql_plugin  i_s_innodb_cmpmem_reset;
 206 +extern struct st_mysql_plugin  i_s_innodb_rseg;
 207
 208  #endif /* i_s_h */