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perfschema 5.6.10 initial commit.
10.0 files
This commit is contained in:
Sergei Golubchik
511
storage/perfschema/table_sync_instances.cc
Normal file
511
storage/perfschema/table_sync_instances.cc
Normal file
@@ -0,0 +1,511 @@
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/* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
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/**
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@file storage/perfschema/table_sync_instances.cc
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Table MUTEX_INSTANCES, RWLOCK_INSTANCES
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and COND_INSTANCES (implementation).
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*/
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#include "my_global.h"
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#include "my_pthread.h"
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#include "pfs_instr.h"
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#include "pfs_column_types.h"
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#include "pfs_column_values.h"
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#include "table_sync_instances.h"
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#include "pfs_global.h"
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THR_LOCK table_mutex_instances::m_table_lock;
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static const TABLE_FIELD_TYPE mutex_field_types[]=
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{
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{
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{ C_STRING_WITH_LEN("NAME") },
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{ C_STRING_WITH_LEN("varchar(128)") },
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{ NULL, 0}
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},
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{
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{ C_STRING_WITH_LEN("OBJECT_INSTANCE_BEGIN") },
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{ C_STRING_WITH_LEN("bigint(20)") },
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{ NULL, 0}
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},
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{
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{ C_STRING_WITH_LEN("LOCKED_BY_THREAD_ID") },
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{ C_STRING_WITH_LEN("bigint(20)") },
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{ NULL, 0}
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}
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};
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TABLE_FIELD_DEF
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table_mutex_instances::m_field_def=
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{ 3, mutex_field_types };
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PFS_engine_table_share
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table_mutex_instances::m_share=
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{
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{ C_STRING_WITH_LEN("mutex_instances") },
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&pfs_readonly_acl,
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&table_mutex_instances::create,
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NULL, /* write_row */
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NULL, /* delete_all_rows */
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NULL, /* get_row_count */
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1000, /* records */
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sizeof(PFS_simple_index),
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&m_table_lock,
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&m_field_def,
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false /* checked */
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};
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PFS_engine_table* table_mutex_instances::create(void)
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{
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return new table_mutex_instances();
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}
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table_mutex_instances::table_mutex_instances()
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: PFS_engine_table(&m_share, &m_pos),
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m_row_exists(false), m_pos(0), m_next_pos(0)
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{}
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void table_mutex_instances::reset_position(void)
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{
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m_pos.m_index= 0;
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m_next_pos.m_index= 0;
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}
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int table_mutex_instances::rnd_next(void)
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{
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PFS_mutex *pfs;
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for (m_pos.set_at(&m_next_pos); m_pos.m_index < mutex_max; m_pos.next())
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{
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pfs= &mutex_array[m_pos.m_index];
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if (pfs->m_lock.is_populated())
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{
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make_row(pfs);
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m_next_pos.set_after(&m_pos);
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return 0;
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}
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}
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return HA_ERR_END_OF_FILE;
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}
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int table_mutex_instances::rnd_pos(const void *pos)
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{
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PFS_mutex *pfs;
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set_position(pos);
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DBUG_ASSERT(m_pos.m_index < mutex_max);
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pfs= &mutex_array[m_pos.m_index];
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if (pfs->m_lock.is_populated())
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{
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make_row(pfs);
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return 0;
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}
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return HA_ERR_RECORD_DELETED;
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}
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void table_mutex_instances::make_row(PFS_mutex *pfs)
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{
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pfs_lock lock;
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PFS_mutex_class *safe_class;
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m_row_exists= false;
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/* Protect this reader against a mutex destroy */
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pfs->m_lock.begin_optimistic_lock(&lock);
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safe_class= sanitize_mutex_class(pfs->m_class);
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if (unlikely(safe_class == NULL))
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return;
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m_row.m_name= safe_class->m_name;
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m_row.m_name_length= safe_class->m_name_length;
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m_row.m_identity= pfs->m_identity;
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/* Protect this reader against a mutex unlock */
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PFS_thread *safe_owner= sanitize_thread(pfs->m_owner);
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if (safe_owner)
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{
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m_row.m_locked_by_thread_id= safe_owner->m_thread_internal_id;
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m_row.m_locked= true;
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}
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else
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m_row.m_locked= false;
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if (pfs->m_lock.end_optimistic_lock(&lock))
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m_row_exists= true;
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}
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int table_mutex_instances::read_row_values(TABLE *table,
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unsigned char *buf,
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Field **fields,
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bool read_all)
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{
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Field *f;
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if (unlikely(! m_row_exists))
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return HA_ERR_RECORD_DELETED;
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/* Set the null bits */
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DBUG_ASSERT(table->s->null_bytes == 1);
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buf[0]= 0;
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for (; (f= *fields) ; fields++)
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{
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if (read_all || bitmap_is_set(table->read_set, f->field_index))
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{
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switch(f->field_index)
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{
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case 0: /* NAME */
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set_field_varchar_utf8(f, m_row.m_name, m_row.m_name_length);
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break;
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case 1: /* OBJECT_INSTANCE */
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set_field_ulonglong(f, (intptr) m_row.m_identity);
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break;
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case 2: /* LOCKED_BY_THREAD_ID */
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if (m_row.m_locked)
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set_field_ulonglong(f, m_row.m_locked_by_thread_id);
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else
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f->set_null();
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break;
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default:
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DBUG_ASSERT(false);
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}
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}
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}
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return 0;
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}
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THR_LOCK table_rwlock_instances::m_table_lock;
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static const TABLE_FIELD_TYPE rwlock_field_types[]=
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{
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{
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{ C_STRING_WITH_LEN("NAME") },
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{ C_STRING_WITH_LEN("varchar(128)") },
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{ NULL, 0}
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},
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{
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{ C_STRING_WITH_LEN("OBJECT_INSTANCE_BEGIN") },
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{ C_STRING_WITH_LEN("bigint(20)") },
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{ NULL, 0}
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},
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{
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{ C_STRING_WITH_LEN("WRITE_LOCKED_BY_THREAD_ID") },
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{ C_STRING_WITH_LEN("bigint(20)") },
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{ NULL, 0}
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},
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{
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{ C_STRING_WITH_LEN("READ_LOCKED_BY_COUNT") },
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{ C_STRING_WITH_LEN("int(10)") },
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{ NULL, 0}
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}
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};
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TABLE_FIELD_DEF
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table_rwlock_instances::m_field_def=
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{ 4, rwlock_field_types };
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PFS_engine_table_share
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table_rwlock_instances::m_share=
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{
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{ C_STRING_WITH_LEN("rwlock_instances") },
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&pfs_readonly_acl,
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&table_rwlock_instances::create,
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NULL, /* write_row */
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NULL, /* delete_all_rows */
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NULL, /* get_row_count */
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1000, /* records */
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sizeof(PFS_simple_index),
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&m_table_lock,
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&m_field_def,
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false /* checked */
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};
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PFS_engine_table* table_rwlock_instances::create(void)
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{
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return new table_rwlock_instances();
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}
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table_rwlock_instances::table_rwlock_instances()
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: PFS_engine_table(&m_share, &m_pos),
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m_row_exists(false), m_pos(0), m_next_pos(0)
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{}
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void table_rwlock_instances::reset_position(void)
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{
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m_pos.m_index= 0;
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m_next_pos.m_index= 0;
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}
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int table_rwlock_instances::rnd_next(void)
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{
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PFS_rwlock *pfs;
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for (m_pos.set_at(&m_next_pos); m_pos.m_index < rwlock_max; m_pos.next())
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{
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pfs= &rwlock_array[m_pos.m_index];
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if (pfs->m_lock.is_populated())
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{
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make_row(pfs);
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m_next_pos.set_after(&m_pos);
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return 0;
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}
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}
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return HA_ERR_END_OF_FILE;
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}
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int table_rwlock_instances::rnd_pos(const void *pos)
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{
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PFS_rwlock *pfs;
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set_position(pos);
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DBUG_ASSERT(m_pos.m_index < rwlock_max);
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pfs= &rwlock_array[m_pos.m_index];
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if (pfs->m_lock.is_populated())
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{
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make_row(pfs);
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return 0;
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}
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return HA_ERR_RECORD_DELETED;
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}
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void table_rwlock_instances::make_row(PFS_rwlock *pfs)
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{
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pfs_lock lock;
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PFS_rwlock_class *safe_class;
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m_row_exists= false;
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/* Protect this reader against a rwlock destroy */
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pfs->m_lock.begin_optimistic_lock(&lock);
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safe_class= sanitize_rwlock_class(pfs->m_class);
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if (unlikely(safe_class == NULL))
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return;
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m_row.m_name= safe_class->m_name;
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m_row.m_name_length= safe_class->m_name_length;
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m_row.m_identity= pfs->m_identity;
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/* Protect this reader against a rwlock unlock in the writer */
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PFS_thread *safe_writer= sanitize_thread(pfs->m_writer);
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if (safe_writer)
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{
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m_row.m_write_locked_by_thread_id= safe_writer->m_thread_internal_id;
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m_row.m_readers= 0;
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m_row.m_write_locked= true;
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}
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else
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{
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m_row.m_readers= pfs->m_readers;
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m_row.m_write_locked= false;
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||||
}
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if (pfs->m_lock.end_optimistic_lock(&lock))
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m_row_exists= true;
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}
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|
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int table_rwlock_instances::read_row_values(TABLE *table,
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unsigned char *buf,
|
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Field **fields,
|
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bool read_all)
|
||||
{
|
||||
Field *f;
|
||||
|
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if (unlikely(! m_row_exists))
|
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return HA_ERR_RECORD_DELETED;
|
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|
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/* Set the null bits */
|
||||
DBUG_ASSERT(table->s->null_bytes == 1);
|
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buf[0]= 0;
|
||||
|
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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;
|
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case 1: /* OBJECT_INSTANCE */
|
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set_field_ulonglong(f, (intptr) m_row.m_identity);
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||||
break;
|
||||
case 2: /* WRITE_LOCKED_BY_THREAD_ID */
|
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if (m_row.m_write_locked)
|
||||
set_field_ulonglong(f, m_row.m_write_locked_by_thread_id);
|
||||
else
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||||
f->set_null();
|
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break;
|
||||
case 3: /* READ_LOCKED_BY_COUNT */
|
||||
set_field_ulong(f, m_row.m_readers);
|
||||
break;
|
||||
default:
|
||||
DBUG_ASSERT(false);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
THR_LOCK table_cond_instances::m_table_lock;
|
||||
|
||||
static const TABLE_FIELD_TYPE cond_field_types[]=
|
||||
{
|
||||
{
|
||||
{ C_STRING_WITH_LEN("NAME") },
|
||||
{ C_STRING_WITH_LEN("varchar(128)") },
|
||||
{ NULL, 0}
|
||||
},
|
||||
{
|
||||
{ C_STRING_WITH_LEN("OBJECT_INSTANCE_BEGIN") },
|
||||
{ C_STRING_WITH_LEN("bigint(20)") },
|
||||
{ NULL, 0}
|
||||
}
|
||||
};
|
||||
|
||||
TABLE_FIELD_DEF
|
||||
table_cond_instances::m_field_def=
|
||||
{ 2, cond_field_types };
|
||||
|
||||
PFS_engine_table_share
|
||||
table_cond_instances::m_share=
|
||||
{
|
||||
{ C_STRING_WITH_LEN("cond_instances") },
|
||||
&pfs_readonly_acl,
|
||||
&table_cond_instances::create,
|
||||
NULL, /* write_row */
|
||||
NULL, /* delete_all_rows */
|
||||
NULL, /* get_row_count */
|
||||
1000, /* records */
|
||||
sizeof(PFS_simple_index),
|
||||
&m_table_lock,
|
||||
&m_field_def,
|
||||
false /* checked */
|
||||
};
|
||||
|
||||
PFS_engine_table* table_cond_instances::create(void)
|
||||
{
|
||||
return new table_cond_instances();
|
||||
}
|
||||
|
||||
table_cond_instances::table_cond_instances()
|
||||
: PFS_engine_table(&m_share, &m_pos),
|
||||
m_row_exists(false), m_pos(0), m_next_pos(0)
|
||||
{}
|
||||
|
||||
void table_cond_instances::reset_position(void)
|
||||
{
|
||||
m_pos.m_index= 0;
|
||||
m_next_pos.m_index= 0;
|
||||
}
|
||||
|
||||
int table_cond_instances::rnd_next(void)
|
||||
{
|
||||
PFS_cond *pfs;
|
||||
|
||||
for (m_pos.set_at(&m_next_pos); m_pos.m_index < cond_max; m_pos.next())
|
||||
{
|
||||
pfs= &cond_array[m_pos.m_index];
|
||||
if (pfs->m_lock.is_populated())
|
||||
{
|
||||
make_row(pfs);
|
||||
m_next_pos.set_after(&m_pos);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return HA_ERR_END_OF_FILE;
|
||||
}
|
||||
|
||||
int table_cond_instances::rnd_pos(const void *pos)
|
||||
{
|
||||
PFS_cond *pfs;
|
||||
|
||||
set_position(pos);
|
||||
DBUG_ASSERT(m_pos.m_index < cond_max);
|
||||
pfs= &cond_array[m_pos.m_index];
|
||||
if (pfs->m_lock.is_populated())
|
||||
{
|
||||
make_row(pfs);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return HA_ERR_RECORD_DELETED;
|
||||
}
|
||||
|
||||
void table_cond_instances::make_row(PFS_cond *pfs)
|
||||
{
|
||||
pfs_lock lock;
|
||||
PFS_cond_class *safe_class;
|
||||
|
||||
m_row_exists= false;
|
||||
|
||||
/* Protect this reader against a cond destroy */
|
||||
pfs->m_lock.begin_optimistic_lock(&lock);
|
||||
|
||||
safe_class= sanitize_cond_class(pfs->m_class);
|
||||
if (unlikely(safe_class == NULL))
|
||||
return;
|
||||
|
||||
m_row.m_name= safe_class->m_name;
|
||||
m_row.m_name_length= safe_class->m_name_length;
|
||||
m_row.m_identity= pfs->m_identity;
|
||||
|
||||
if (pfs->m_lock.end_optimistic_lock(&lock))
|
||||
m_row_exists= true;
|
||||
}
|
||||
|
||||
int table_cond_instances::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: /* NAME */
|
||||
set_field_varchar_utf8(f, m_row.m_name, m_row.m_name_length);
|
||||
break;
|
||||
case 1: /* OBJECT_INSTANCE */
|
||||
set_field_ulonglong(f, (intptr) m_row.m_identity);
|
||||
break;
|
||||
default:
|
||||
DBUG_ASSERT(false);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user