diff options
Diffstat (limited to 'storage/perfschema/table_setup_instruments.cc')
| -rw-r--r-- | storage/perfschema/table_setup_instruments.cc | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/storage/perfschema/table_setup_instruments.cc b/storage/perfschema/table_setup_instruments.cc new file mode 100644 index 00000000000..6756e780d78 --- /dev/null +++ b/storage/perfschema/table_setup_instruments.cc @@ -0,0 +1,276 @@ +/* Copyright (C) 2008-2009 Sun Microsystems, Inc + + 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +/** + @file storage/perfschema/table_setup_instruments.cc + Table SETUP_INSTRUMENTS (implementation). +*/ + +#include "mysql_priv.h" +#include "pfs_instr_class.h" +#include "pfs_column_types.h" +#include "pfs_column_values.h" +#include "table_setup_instruments.h" +#include "pfs_global.h" + +THR_LOCK table_setup_instruments::m_table_lock; + +static const TABLE_FIELD_TYPE field_types[]= +{ + { + { C_STRING_WITH_LEN("NAME") }, + { C_STRING_WITH_LEN("varchar(128)") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("ENABLED") }, + { C_STRING_WITH_LEN("enum(\'YES\',\'NO\')") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("TIMED") }, + { C_STRING_WITH_LEN("enum(\'YES\',\'NO\')") }, + { NULL, 0} + } +}; + +TABLE_FIELD_DEF +table_setup_instruments::m_field_def= +{ 3, field_types }; + +PFS_engine_table_share +table_setup_instruments::m_share= +{ + { C_STRING_WITH_LEN("SETUP_INSTRUMENTS") }, + &pfs_updatable_acl, + &table_setup_instruments::create, + NULL, /* write_row */ + NULL, /* delete_all_rows */ + 1000, /* records */ + sizeof(pos_setup_instruments), + &m_table_lock, + &m_field_def, + false /* checked */ +}; + +PFS_engine_table* table_setup_instruments::create(void) +{ + return new table_setup_instruments(); +} + +table_setup_instruments::table_setup_instruments() + : PFS_engine_table(&m_share, &m_pos), + m_pos(), m_next_pos() +{} + +void table_setup_instruments::reset_position(void) +{ + m_pos.reset(); + m_next_pos.reset(); +} + +int table_setup_instruments::rnd_next(void) +{ + PFS_mutex_class *mutex_class; + PFS_rwlock_class *rwlock_class; + PFS_cond_class *cond_class; + PFS_file_class *file_class; + + for (m_pos.set_at(&m_next_pos); + m_pos.has_more_view(); + m_pos.next_view()) + { + switch (m_pos.m_index_1) { + case pos_setup_instruments::VIEW_MUTEX: + mutex_class= find_mutex_class(m_pos.m_index_2); + if (mutex_class) + { + make_row(mutex_class); + m_next_pos.set_after(&m_pos); + return 0; + } + break; + case pos_setup_instruments::VIEW_RWLOCK: + rwlock_class= find_rwlock_class(m_pos.m_index_2); + if (rwlock_class) + { + make_row(rwlock_class); + m_next_pos.set_after(&m_pos); + return 0; + } + break; + case pos_setup_instruments::VIEW_COND: + cond_class= find_cond_class(m_pos.m_index_2); + if (cond_class) + { + make_row(cond_class); + m_next_pos.set_after(&m_pos); + return 0; + } + break; + case pos_setup_instruments::VIEW_THREAD: + /* Reserved for WL#4674, PERFORMANCE_SCHEMA Setup For Actors. */ + break; + case pos_setup_instruments::VIEW_FILE: + file_class= find_file_class(m_pos.m_index_2); + if (file_class) + { + make_row(file_class); + m_next_pos.set_after(&m_pos); + return 0; + } + break; + } + } + + return HA_ERR_END_OF_FILE; +} + +int table_setup_instruments::rnd_pos(const void *pos) +{ + PFS_mutex_class *mutex_class; + PFS_rwlock_class *rwlock_class; + PFS_cond_class *cond_class; + PFS_file_class *file_class; + + set_position(pos); + + switch (m_pos.m_index_1) { + case pos_setup_instruments::VIEW_MUTEX: + mutex_class= find_mutex_class(m_pos.m_index_2); + if (mutex_class) + { + make_row(mutex_class); + return 0; + } + break; + case pos_setup_instruments::VIEW_RWLOCK: + rwlock_class= find_rwlock_class(m_pos.m_index_2); + if (rwlock_class) + { + make_row(rwlock_class); + return 0; + } + break; + case pos_setup_instruments::VIEW_COND: + cond_class= find_cond_class(m_pos.m_index_2); + if (cond_class) + { + make_row(cond_class); + return 0; + } + break; + case pos_setup_instruments::VIEW_THREAD: + /* Reserved for WL#4674, PERFORMANCE_SCHEMA Setup For Actors. */ + break; + case pos_setup_instruments::VIEW_FILE: + file_class= find_file_class(m_pos.m_index_2); + if (file_class) + { + make_row(file_class); + return 0; + } + break; + } + + return HA_ERR_RECORD_DELETED; +} + +void table_setup_instruments::make_row(PFS_instr_class *klass) +{ + m_row.m_name= &klass->m_name[0]; + m_row.m_name_length= klass->m_name_length; + m_row.m_enabled_ptr= &klass->m_enabled; + m_row.m_timed_ptr= &klass->m_timed; +} + +int table_setup_instruments::read_row_values(TABLE *table, + unsigned char *, + Field **fields, + bool read_all) +{ + Field *f; + + DBUG_ASSERT(table->s->null_bytes == 0); + + /* + The row always exist, the instrument classes + are static and never disappear. + */ + + for (; (f= *fields) ; fields++) + { + if (read_all || bitmap_is_set(table->read_set, f->field_index)) + { + switch(f->field_index) + { + case 0: /* NAME */ + set_field_varchar_utf8(f, m_row.m_name, m_row.m_name_length); + break; + case 1: /* ENABLED */ + set_field_enum(f, (*m_row.m_enabled_ptr) ? ENUM_YES : ENUM_NO); + break; + case 2: /* TIMED */ + if (m_row.m_timed_ptr) + set_field_enum(f, (*m_row.m_timed_ptr) ? ENUM_YES : ENUM_NO); + else + set_field_enum(f, ENUM_NO); + break; + default: + DBUG_ASSERT(false); + } + } + } + + return 0; +} + +int table_setup_instruments::update_row_values(TABLE *table, + const unsigned char *, + unsigned char *, + Field **fields) +{ + Field *f; + enum_yes_no value; + + for (; (f= *fields) ; fields++) + { + if (bitmap_is_set(table->write_set, f->field_index)) + { + switch(f->field_index) + { + case 0: /* NAME */ + my_error(ER_WRONG_PERFSCHEMA_USAGE, MYF(0)); + return HA_ERR_WRONG_COMMAND; + case 1: /* ENABLED */ + value= (enum_yes_no) get_field_enum(f); + *m_row.m_enabled_ptr= (value == ENUM_YES) ? true : false; + break; + case 2: /* TIMED */ + if (m_row.m_timed_ptr) + { + value= (enum_yes_no) get_field_enum(f); + *m_row.m_timed_ptr= (value == ENUM_YES) ? true : false; + } + break; + default: + DBUG_ASSERT(false); + } + } + } + + return 0; +} + |