/* Copyright (c) 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */ #include "my_global.h" #include "my_pthread.h" #include "table_accounts.h" #include "pfs_instr_class.h" #include "pfs_instr.h" #include "pfs_account.h" #include "pfs_visitor.h" THR_LOCK table_accounts::m_table_lock; PFS_engine_table_share table_accounts::m_share= { { C_STRING_WITH_LEN("accounts") }, &pfs_truncatable_acl, &table_accounts::create, NULL, /* write_row */ table_accounts::delete_all_rows, NULL, /* get_row_count */ 1000, /* records */ sizeof(PFS_simple_index), /* ref length */ &m_table_lock, { C_STRING_WITH_LEN("CREATE TABLE accounts(" "USER CHAR(16) collate utf8_bin default null," "HOST CHAR(60) collate utf8_bin default null," "CURRENT_CONNECTIONS bigint not null," "TOTAL_CONNECTIONS bigint not null)") } }; PFS_engine_table* table_accounts::create() { return new table_accounts(); } int table_accounts::delete_all_rows(void) { reset_events_waits_by_thread(); reset_events_waits_by_account(); reset_events_stages_by_thread(); reset_events_stages_by_account(); reset_events_statements_by_thread(); reset_events_statements_by_account(); purge_all_account(); return 0; } table_accounts::table_accounts() : cursor_by_account(& m_share), m_row_exists(false) {} void table_accounts::make_row(PFS_account *pfs) { pfs_lock lock; m_row_exists= false; pfs->m_lock.begin_optimistic_lock(&lock); if (m_row.m_account.make_row(pfs)) return; PFS_connection_stat_visitor visitor; PFS_connection_iterator::visit_account(pfs, true, & visitor); if (! pfs->m_lock.end_optimistic_lock(& lock)) return; m_row.m_connection_stat.set(& visitor.m_stat); m_row_exists= true; } int table_accounts::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 */ DBUG_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: /* USER */ case 1: /* HOST */ m_row.m_account.set_field(f->field_index, f); break; case 2: /* CURRENT_CONNECTIONS */ case 3: /* TOTAL_CONNECTIONS */ m_row.m_connection_stat.set_field(f->field_index - 2, f); break; default: DBUG_ASSERT(false); } } } return 0; }