99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/*
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Copyright (c) 2013, 2016, 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
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "connection_handler_impl.h"
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#include "channel_info.h" // Channel_info
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#include "connection_handler_manager.h" // Connection_handler_manager
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#include "mysqld_error.h" // ER_*
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#include "mysqld_thd_manager.h" // Global_THD_manager
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#include "sql_audit.h" // mysql_audit_release
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#include "sql_connect.h" // close_connection
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#include "sql_class.h" // THD
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#include "sql_parse.h" // do_command
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#include "sql_thd_internal_api.h" // thd_set_thread_stack
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bool One_thread_connection_handler::add_connection(Channel_info* channel_info)
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{
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if (my_thread_init())
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{
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connection_errors_internal++;
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channel_info->send_error_and_close_channel(ER_OUT_OF_RESOURCES, 0, false);
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Connection_handler_manager::dec_connection_count();
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return true;
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}
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THD* thd= channel_info->create_thd();
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if (thd == NULL)
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{
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connection_errors_internal++;
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channel_info->send_error_and_close_channel(ER_OUT_OF_RESOURCES, 0, false);
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Connection_handler_manager::dec_connection_count();
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return true;
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}
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thd->set_new_thread_id();
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thd->start_utime= thd->thr_create_utime= my_micro_time();
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/*
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handle_one_connection() is normally the only way a thread would
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start and would always be on the very high end of the stack ,
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therefore, the thread stack always starts at the address of the
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first local variable of handle_one_connection, which is thd. We
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need to know the start of the stack so that we could check for
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stack overruns.
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*/
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thd_set_thread_stack(thd, (char*) &thd);
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if (thd->store_globals())
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{
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close_connection(thd, ER_OUT_OF_RESOURCES);
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thd->release_resources();
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delete thd;
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Connection_handler_manager::dec_connection_count();
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return true;
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}
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mysql_thread_set_psi_id(thd->thread_id());
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mysql_socket_set_thread_owner(
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thd->get_protocol_classic()->get_vio()->mysql_socket);
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Global_THD_manager *thd_manager= Global_THD_manager::get_instance();
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thd_manager->add_thd(thd);
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bool error= false;
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if (thd_prepare_connection(thd))
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error= true; // Returning true causes inc_aborted_connects() to be called.
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else
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{
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delete channel_info;
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while (thd_connection_alive(thd))
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{
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if (do_command(thd))
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break;
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}
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end_connection(thd);
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}
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close_connection(thd, 0, false, false);
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thd->release_resources();
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thd_manager->remove_thd(thd);
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Connection_handler_manager::dec_connection_count();
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delete thd;
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return error;
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}
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