/* Copyright (c) 2000, 2019, 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, 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /* close a isam-database */ #include #include "my_dbug.h" #include "storage/myisam/myisamdef.h" #include "storage/myisammrg/myrg_def.h" int myrg_close(MYRG_INFO *info) { int error = 0, new_error; MYRG_TABLE *file; DBUG_TRACE; /* Assume that info->children_attached means that this is called from direct use of MERGE, not from a MySQL server. In this case the children must be closed and info->rec_per_key_part is part of the 'info' multi_alloc. If info->children_attached is false, this is called from a MySQL server. Children are closed independently but info->rec_per_key_part must be freed. Just in case of a server panic (myrg_panic()) info->children_attached might be true. We would close the children though they should be closed independently and info->rec_per_key_part is not freed. This should be acceptable for a panic. In case of a MySQL server and no children, children_attached is always true. In this case no rec_per_key_part has been allocated. So it is correct to use the branch where an empty list of tables is (not) closed. */ if (info->children_attached) { for (file = info->open_tables; file != info->end_table; file++) { /* purecov: begin inspected */ if ((new_error = mi_close(file->table))) error = new_error; else file->table = NULL; /* purecov: end */ } } else my_free(info->rec_per_key_part); delete_queue(&info->by_key); mysql_mutex_lock(&THR_LOCK_open); myrg_open_list = list_delete(myrg_open_list, &info->open_list); mysql_mutex_unlock(&THR_LOCK_open); mysql_mutex_destroy(&info->mutex); my_free(info); if (error) { set_my_errno(error); return error; } return 0; }