diff options
Diffstat (limited to 'storage/perfschema/table_esgs_by_thread_by_event_name.cc')
| -rw-r--r-- | storage/perfschema/table_esgs_by_thread_by_event_name.cc | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/storage/perfschema/table_esgs_by_thread_by_event_name.cc b/storage/perfschema/table_esgs_by_thread_by_event_name.cc new file mode 100644 index 00000000000..2a69ec24277 --- /dev/null +++ b/storage/perfschema/table_esgs_by_thread_by_event_name.cc @@ -0,0 +1,229 @@ +/* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved. + + 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 02110-1301 USA */ + +/** + @file storage/perfschema/table_esgs_by_thread_by_event_name.cc + Table EVENTS_STAGES_SUMMARY_BY_HOST_BY_EVENT_NAME (implementation). +*/ + +#include "my_global.h" +#include "my_pthread.h" +#include "pfs_instr_class.h" +#include "pfs_column_types.h" +#include "pfs_column_values.h" +#include "table_esgs_by_thread_by_event_name.h" +#include "pfs_global.h" +#include "pfs_visitor.h" + +THR_LOCK table_esgs_by_thread_by_event_name::m_table_lock; + +static const TABLE_FIELD_TYPE field_types[]= +{ + { + { C_STRING_WITH_LEN("THREAD_ID") }, + { C_STRING_WITH_LEN("int(11)") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("EVENT_NAME") }, + { C_STRING_WITH_LEN("varchar(128)") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("COUNT_STAR") }, + { C_STRING_WITH_LEN("bigint(20)") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("SUM_TIMER_WAIT") }, + { C_STRING_WITH_LEN("bigint(20)") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("MIN_TIMER_WAIT") }, + { C_STRING_WITH_LEN("bigint(20)") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("AVG_TIMER_WAIT") }, + { C_STRING_WITH_LEN("bigint(20)") }, + { NULL, 0} + }, + { + { C_STRING_WITH_LEN("MAX_TIMER_WAIT") }, + { C_STRING_WITH_LEN("bigint(20)") }, + { NULL, 0} + } +}; + +TABLE_FIELD_DEF +table_esgs_by_thread_by_event_name::m_field_def= +{ 7, field_types }; + +PFS_engine_table_share +table_esgs_by_thread_by_event_name::m_share= +{ + { C_STRING_WITH_LEN("events_stages_summary_by_thread_by_event_name") }, + &pfs_truncatable_acl, + table_esgs_by_thread_by_event_name::create, + NULL, /* write_row */ + table_esgs_by_thread_by_event_name::delete_all_rows, + NULL, /* get_row_count */ + 1000, /* records */ + sizeof(pos_esgs_by_thread_by_event_name), + &m_table_lock, + &m_field_def, + false /* checked */ +}; + +PFS_engine_table* +table_esgs_by_thread_by_event_name::create(void) +{ + return new table_esgs_by_thread_by_event_name(); +} + +int +table_esgs_by_thread_by_event_name::delete_all_rows(void) +{ + reset_events_stages_by_thread(); + return 0; +} + +table_esgs_by_thread_by_event_name::table_esgs_by_thread_by_event_name() + : PFS_engine_table(&m_share, &m_pos), + m_row_exists(false), m_pos(), m_next_pos() +{} + +void table_esgs_by_thread_by_event_name::reset_position(void) +{ + m_pos.reset(); + m_next_pos.reset(); +} + +int table_esgs_by_thread_by_event_name::rnd_init(bool scan) +{ + m_normalizer= time_normalizer::get(stage_timer); + return 0; +} + +int table_esgs_by_thread_by_event_name::rnd_next(void) +{ + PFS_thread *thread; + PFS_stage_class *stage_class; + + for (m_pos.set_at(&m_next_pos); + m_pos.has_more_thread(); + m_pos.next_thread()) + { + thread= &thread_array[m_pos.m_index_1]; + + /* + Important note: the thread scan is the outer loop (index 1), + to minimize the number of calls to atomic operations. + */ + if (thread->m_lock.is_populated()) + { + stage_class= find_stage_class(m_pos.m_index_2); + if (stage_class) + { + make_row(thread, stage_class); + m_next_pos.set_after(&m_pos); + return 0; + } + } + } + + return HA_ERR_END_OF_FILE; +} + +int +table_esgs_by_thread_by_event_name::rnd_pos(const void *pos) +{ + PFS_thread *thread; + PFS_stage_class *stage_class; + + set_position(pos); + DBUG_ASSERT(m_pos.m_index_1 < thread_max); + + thread= &thread_array[m_pos.m_index_1]; + if (! thread->m_lock.is_populated()) + return HA_ERR_RECORD_DELETED; + + stage_class= find_stage_class(m_pos.m_index_2); + if (stage_class) + { + make_row(thread, stage_class); + return 0; + } + + return HA_ERR_RECORD_DELETED; +} + +void table_esgs_by_thread_by_event_name +::make_row(PFS_thread *thread, PFS_stage_class *klass) +{ + pfs_lock lock; + m_row_exists= false; + + /* Protect this reader against a thread termination */ + thread->m_lock.begin_optimistic_lock(&lock); + + m_row.m_thread_internal_id= thread->m_thread_internal_id; + + m_row.m_event_name.make_row(klass); + + PFS_connection_stage_visitor visitor(klass); + PFS_connection_iterator::visit_thread(thread, & visitor); + + if (thread->m_lock.end_optimistic_lock(&lock)) + m_row_exists= true; + + m_row.m_stat.set(m_normalizer, & visitor.m_stat); +} + +int table_esgs_by_thread_by_event_name +::read_row_values(TABLE *table, unsigned char *, Field **fields, + bool read_all) +{ + Field *f; + + if (unlikely(! m_row_exists)) + return HA_ERR_RECORD_DELETED; + + /* Set the null bits */ + DBUG_ASSERT(table->s->null_bytes == 0); + + for (; (f= *fields) ; fields++) + { + if (read_all || bitmap_is_set(table->read_set, f->field_index)) + { + switch(f->field_index) + { + case 0: /* THREAD_ID */ + set_field_ulong(f, m_row.m_thread_internal_id); + break; + case 1: /* NAME */ + m_row.m_event_name.set_field(f); + break; + default: /* 2, ... COUNT/SUM/MIN/AVG/MAX */ + m_row.m_stat.set_field(f->field_index - 2, f); + break; + } + } + } + + return 0; +} + |