mariadb/storage/myisam/ha_myisam.h
Vicențiu Ciorbaru 08c852026d Apply clang-tidy to remove empty constructors / destructors
This patch is the result of running
run-clang-tidy -fix -header-filter=.* -checks='-*,modernize-use-equals-default' .

Code style changes have been done on top. The result of this change
leads to the following improvements:

1. Binary size reduction.
* For a -DBUILD_CONFIG=mysql_release build, the binary size is reduced by
  ~400kb.
* A raw -DCMAKE_BUILD_TYPE=Release reduces the binary size by ~1.4kb.

2. Compiler can better understand the intent of the code, thus it leads
   to more optimization possibilities. Additionally it enabled detecting
   unused variables that had an empty default constructor but not marked
   so explicitly.

   Particular change required following this patch in sql/opt_range.cc

   result_keys, an unused template class Bitmap now correctly issues
   unused variable warnings.

   Setting Bitmap template class constructor to default allows the compiler
   to identify that there are no side-effects when instantiating the class.
   Previously the compiler could not issue the warning as it assumed Bitmap
   class (being a template) would not be performing a NO-OP for its default
   constructor. This prevented the "unused variable warning".
2023-02-09 16:09:08 +02:00

179 lines
7.1 KiB
C++

/*
Copyright (c) 2000, 2012, Oracle and/or its affiliates.
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; version 2 of the License.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifdef USE_PRAGMA_INTERFACE
#pragma interface /* gcc class implementation */
#endif
/* class for the the myisam handler */
#include <myisam.h>
#include <ft_global.h>
#include "handler.h" /* handler */
#include "table.h" /* TABLE_SHARE */
#define HA_RECOVER_DEFAULT 1 /* Automatic recover active */
#define HA_RECOVER_BACKUP 2 /* Make a backupfile on recover */
#define HA_RECOVER_FORCE 4 /* Recover even if we loose rows */
#define HA_RECOVER_QUICK 8 /* Don't check rows in data file */
#define HA_RECOVER_FULL_BACKUP 16 /* Make a copy of index file too */
#define HA_RECOVER_OFF 32 /* No automatic recover */
extern TYPELIB myisam_recover_typelib;
extern const char *myisam_recover_names[];
extern ulonglong myisam_recover_options;
C_MODE_START
check_result_t index_cond_func_myisam(void *arg);
C_MODE_END
class ha_myisam: public handler
{
MI_INFO *file;
ulonglong int_table_flags;
char *data_file_name, *index_file_name;
bool can_enable_indexes;
int repair(THD *thd, HA_CHECK &param, bool optimize);
void setup_vcols_for_repair(HA_CHECK *param);
void restore_vcos_after_repair();
public:
ha_myisam(handlerton *hton, TABLE_SHARE *table_arg);
~ha_myisam() = default;
handler *clone(const char *name, MEM_ROOT *mem_root);
const char *index_type(uint key_number);
ulonglong table_flags() const { return int_table_flags; }
int index_init(uint idx, bool sorted);
int index_end();
int rnd_end();
ulong index_flags(uint inx, uint part, bool all_parts) const;
uint max_supported_keys() const { return MI_MAX_KEY; }
uint max_supported_key_parts() const { return HA_MAX_KEY_SEG; }
uint max_supported_key_length() const { return HA_MAX_KEY_LENGTH; }
uint max_supported_key_part_length() const { return HA_MAX_KEY_LENGTH; }
void change_table_ptr(TABLE *table_arg, TABLE_SHARE *share);
int open(const char *name, int mode, uint test_if_locked);
int close(void);
int write_row(const uchar * buf);
int update_row(const uchar * old_data, const uchar * new_data);
int delete_row(const uchar * buf);
int index_read_map(uchar *buf, const uchar *key, key_part_map keypart_map,
enum ha_rkey_function find_flag);
int index_read_idx_map(uchar *buf, uint index, const uchar *key,
key_part_map keypart_map,
enum ha_rkey_function find_flag);
int index_next(uchar * buf);
int index_prev(uchar * buf);
int index_first(uchar * buf);
int index_last(uchar * buf);
int index_next_same(uchar *buf, const uchar *key, uint keylen);
int ft_init()
{
if (!ft_handler)
return 1;
ft_handler->please->reinit_search(ft_handler);
return 0;
}
FT_INFO *ft_init_ext(uint flags, uint inx,String *key)
{
return ft_init_search(flags,file,inx,
(uchar *)key->ptr(), key->length(), key->charset(),
table->record[0]);
}
int ft_read(uchar *buf);
int rnd_init(bool scan);
int rnd_next(uchar *buf);
int rnd_pos(uchar * buf, uchar *pos);
int remember_rnd_pos();
int restart_rnd_next(uchar *buf);
void position(const uchar *record);
int info(uint);
int extra(enum ha_extra_function operation);
int extra_opt(enum ha_extra_function operation, ulong cache_size);
int reset(void);
int external_lock(THD *thd, int lock_type);
int delete_all_rows(void);
int reset_auto_increment(ulonglong value);
int disable_indexes(uint mode);
int enable_indexes(uint mode);
int indexes_are_disabled(void);
void start_bulk_insert(ha_rows rows, uint flags);
int end_bulk_insert();
ha_rows records_in_range(uint inx, key_range *min_key, key_range *max_key);
void update_create_info(HA_CREATE_INFO *create_info);
int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info);
THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
enum thr_lock_type lock_type);
virtual void get_auto_increment(ulonglong offset, ulonglong increment,
ulonglong nb_desired_values,
ulonglong *first_value,
ulonglong *nb_reserved_values);
int rename_table(const char * from, const char * to);
int delete_table(const char *name);
int check_for_upgrade(HA_CHECK_OPT *check_opt);
int check(THD* thd, HA_CHECK_OPT* check_opt);
int analyze(THD* thd,HA_CHECK_OPT* check_opt);
int repair(THD* thd, HA_CHECK_OPT* check_opt);
bool check_and_repair(THD *thd);
bool is_crashed() const;
bool auto_repair(int error) const
{
return (myisam_recover_options != HA_RECOVER_OFF &&
error == HA_ERR_CRASHED_ON_USAGE);
}
int optimize(THD* thd, HA_CHECK_OPT* check_opt);
int assign_to_keycache(THD* thd, HA_CHECK_OPT* check_opt);
int preload_keys(THD* thd, HA_CHECK_OPT* check_opt);
enum_alter_inplace_result check_if_supported_inplace_alter(TABLE *new_table,
Alter_inplace_info *alter_info);
bool check_if_incompatible_data(HA_CREATE_INFO *info, uint table_changes);
#ifdef HAVE_QUERY_CACHE
my_bool register_query_cache_table(THD *thd, const char *table_key,
uint key_length,
qc_engine_callback
*engine_callback,
ulonglong *engine_data);
#endif
MI_INFO *file_ptr(void)
{
return file;
}
public:
/**
* Multi Range Read interface
*/
int multi_range_read_init(RANGE_SEQ_IF *seq, void *seq_init_param,
uint n_ranges, uint mode, HANDLER_BUFFER *buf);
int multi_range_read_next(range_id_t *range_info);
ha_rows multi_range_read_info_const(uint keyno, RANGE_SEQ_IF *seq,
void *seq_init_param,
uint n_ranges, uint *bufsz,
uint *flags, Cost_estimate *cost);
ha_rows multi_range_read_info(uint keyno, uint n_ranges, uint keys,
uint key_parts, uint *bufsz,
uint *flags, Cost_estimate *cost);
int multi_range_read_explain_info(uint mrr_mode, char *str, size_t size);
/* Index condition pushdown implementation */
Item *idx_cond_push(uint keyno, Item* idx_cond);
bool rowid_filter_push(Rowid_filter* rowid_filter);
private:
DsMrr_impl ds_mrr;
friend check_result_t index_cond_func_myisam(void *arg);
};