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- /* Copyright (c) 2011, 2021, 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, version 2.0,
- as published by the Free Software Foundation.
-
- This program is also distributed with certain software (including
- but not limited to OpenSSL) that is licensed under separate terms,
- as designated in a particular file or component or in included license
- documentation. The authors of MySQL hereby grant you an additional
- permission to link the program and your derivative works with the
- separately licensed software that they have included with MySQL.
-
- 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, version 2.0, 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,
- 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
-
- /**
- @file storage/perfschema/table_mems_by_host_by_event_name.cc
- Table MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME (implementation).
- */
-
- #include "my_global.h"
- #include "my_thread.h"
- #include "pfs_instr_class.h"
- #include "pfs_column_types.h"
- #include "pfs_column_values.h"
- #include "table_mems_by_host_by_event_name.h"
- #include "pfs_global.h"
- #include "pfs_visitor.h"
- #include "pfs_memory.h"
- #include "pfs_buffer_container.h"
- #include "field.h"
-
- THR_LOCK table_mems_by_host_by_event_name::m_table_lock;
-
- static const TABLE_FIELD_TYPE field_types[]=
- {
- {
- { C_STRING_WITH_LEN("HOST") },
- { C_STRING_WITH_LEN("char(60)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("EVENT_NAME") },
- { C_STRING_WITH_LEN("varchar(128)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("COUNT_ALLOC") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("COUNT_FREE") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("SUM_NUMBER_OF_BYTES_ALLOC") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("SUM_NUMBER_OF_BYTES_FREE") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("LOW_COUNT_USED") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("CURRENT_COUNT_USED") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("HIGH_COUNT_USED") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("LOW_NUMBER_OF_BYTES_USED") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("CURRENT_NUMBER_OF_BYTES_USED") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- },
- {
- { C_STRING_WITH_LEN("HIGH_NUMBER_OF_BYTES_USED") },
- { C_STRING_WITH_LEN("bigint(20)") },
- { NULL, 0}
- }
- };
-
- TABLE_FIELD_DEF
- table_mems_by_host_by_event_name::m_field_def=
- { 12, field_types };
-
- PFS_engine_table_share
- table_mems_by_host_by_event_name::m_share=
- {
- { C_STRING_WITH_LEN("memory_summary_by_host_by_event_name") },
- &pfs_readonly_acl,
- table_mems_by_host_by_event_name::create,
- NULL, /* write_row */
- table_mems_by_host_by_event_name::delete_all_rows,
- table_mems_by_host_by_event_name::get_row_count,
- sizeof(PFS_simple_index),
- &m_table_lock,
- &m_field_def,
- false, /* checked */
- false /* perpetual */
- };
-
- PFS_engine_table* table_mems_by_host_by_event_name::create(void)
- {
- return new table_mems_by_host_by_event_name();
- }
-
- int
- table_mems_by_host_by_event_name::delete_all_rows(void)
- {
- reset_memory_by_thread();
- reset_memory_by_account();
- reset_memory_by_host();
- return 0;
- }
-
- ha_rows
- table_mems_by_host_by_event_name::get_row_count(void)
- {
- return global_host_container.get_row_count() * memory_class_max;
- }
-
- table_mems_by_host_by_event_name::table_mems_by_host_by_event_name()
- : PFS_engine_table(&m_share, &m_pos),
- m_row_exists(false), m_pos(), m_next_pos()
- {}
-
- void table_mems_by_host_by_event_name::reset_position(void)
- {
- m_pos.reset();
- m_next_pos.reset();
- }
-
- int table_mems_by_host_by_event_name::rnd_next(void)
- {
- PFS_host *host;
- PFS_memory_class *memory_class;
- bool has_more_host= true;
-
- for (m_pos.set_at(&m_next_pos);
- has_more_host;
- m_pos.next_host())
- {
- host= global_host_container.get(m_pos.m_index_1, & has_more_host);
- if (host != NULL)
- {
- do
- {
- memory_class= find_memory_class(m_pos.m_index_2);
- if (memory_class != NULL)
- {
- if (! memory_class->is_global())
- {
- make_row(host, memory_class);
- m_next_pos.set_after(&m_pos);
- return 0;
- }
-
- m_pos.next_class();
- }
- }
- while (memory_class != NULL);
- }
- }
-
- return HA_ERR_END_OF_FILE;
- }
-
- int table_mems_by_host_by_event_name::rnd_pos(const void *pos)
- {
- PFS_host *host;
- PFS_memory_class *memory_class;
-
- set_position(pos);
-
- host= global_host_container.get(m_pos.m_index_1);
- if (host != NULL)
- {
- memory_class= find_memory_class(m_pos.m_index_2);
- if (memory_class != NULL)
- {
- if (! memory_class->is_global())
- {
- make_row(host, memory_class);
- return 0;
- }
- }
- }
-
- return HA_ERR_RECORD_DELETED;
- }
-
- void table_mems_by_host_by_event_name
- ::make_row(PFS_host *host, PFS_memory_class *klass)
- {
- pfs_optimistic_state lock;
- m_row_exists= false;
-
- host->m_lock.begin_optimistic_lock(&lock);
-
- if (m_row.m_host.make_row(host))
- return;
-
- m_row.m_event_name.make_row(klass);
-
- PFS_connection_memory_visitor visitor(klass);
- PFS_connection_iterator::visit_host(host,
- true, /* accounts */
- true, /* threads */
- false, /* THDs */
- & visitor);
-
- if (! host->m_lock.end_optimistic_lock(&lock))
- return;
-
- m_row_exists= true;
- m_row.m_stat.set(& visitor.m_stat);
- }
-
- int table_mems_by_host_by_event_name::read_row_values(TABLE *table,
- unsigned char *buf,
- Field **fields,
- bool read_all)
- {
- Field *f;
-
- if (unlikely(! m_row_exists))
- return HA_ERR_RECORD_DELETED;
-
- /* Set the null bits */
- assert(table->s->null_bytes == 1);
- buf[0]= 0;
-
- for (; (f= *fields) ; fields++)
- {
- if (read_all || bitmap_is_set(table->read_set, f->field_index))
- {
- switch(f->field_index)
- {
- case 0: /* HOST */
- m_row.m_host.set_field(f);
- break;
- case 1: /* EVENT_NAME */
- m_row.m_event_name.set_field(f);
- break;
- default: /* 2, ... HIGH_NUMBER_OF_BYTES_USED */
- m_row.m_stat.set_field(f->field_index - 2, f);
- break;
- }
- }
- }
-
- return 0;
- }
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