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Diffstat (limited to 'mysql/mysql/service_locking.h')
| -rw-r--r-- | mysql/mysql/service_locking.h | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/mysql/mysql/service_locking.h b/mysql/mysql/service_locking.h deleted file mode 100644 index 06f02d2..0000000 --- a/mysql/mysql/service_locking.h +++ /dev/null @@ -1,114 +0,0 @@ -/* - Copyright (c) 2015, 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -*/ - -#ifndef SERVICE_LOCKING_INCLUDED -#define SERVICE_LOCKING_INCLUDED - -/* - This service provides support for taking read/write locks. - It is intended for use with fabric, but it is still a general - service. The locks are in a separate namespace from other - locks in the server, and there is also no interactions with - transactions (i.e. locks are not released on commit/abort). - - These locks are implemented using the metadata lock (MDL) subsystem - and thus deadlocks involving locking service locks and other types - of metadata will be detected using the MDL deadlock detector. -*/ - -#ifdef __cplusplus -class THD; -#define MYSQL_THD THD* -#else -#define MYSQL_THD void* -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -/** - Types of locking service locks. - LOCKING_SERVICE_READ is compatible with LOCKING_SERVICE_READ. - All other combinations are incompatible. -*/ -enum enum_locking_service_lock_type -{ LOCKING_SERVICE_READ, LOCKING_SERVICE_WRITE }; - -extern struct mysql_locking_service_st { - /** - Acquire locking service locks. - - @param opaque_thd Thread handle. If NULL, current_thd will be used. - @param lock_namespace Namespace of the locks to acquire. - @param lock_names Array of names of the locks to acquire. - @param lock_num Number of elements in 'lock_names'. - @param lock_type Lock type to acquire. LOCKING_SERVICE_READ or _WRITE. - @param lock_timeout Number of seconds to wait before giving up. - - @retval 1 Acquisition failed, error has been reported. - @retval 0 Acquisition successful, all locks acquired. - - @note both lock_namespace and lock_names are limited to 64 characters max. - Names are compared using binary comparison. - */ - int (*mysql_acquire_locks)(MYSQL_THD opaque_thd, const char* lock_namespace, - const char**lock_names, size_t lock_num, - enum enum_locking_service_lock_type lock_type, - unsigned long lock_timeout); - - /** - Release all lock service locks taken by the given connection - in the given namespace. - - @param opaque_thd Thread handle. If NULL, current_thd will be used. - @param lock_namespace Namespace of the locks to release. - - @retval 1 Release failed, error has been reported. - @retval 0 Release successful, all locks acquired. - */ - int (*mysql_release_locks)(MYSQL_THD opaque_thd, const char* lock_namespace); -} *mysql_locking_service; - -#ifdef MYSQL_DYNAMIC_PLUGIN - -#define mysql_acquire_locking_service_locks(_THD, _NAMESPACE, _NAMES, _NUM, \ - _TYPE, _TIMEOUT) \ - mysql_locking_service->mysql_acquire_locks(_THD, _NAMESPACE, _NAMES, _NUM, \ - _TYPE, _TIMEOUT) -#define mysql_release_locking_service_locks(_THD, _NAMESPACE) \ - mysql_locking_service->mysql_release_locks(_THD, _NAMESPACE) - -#else - -int mysql_acquire_locking_service_locks(MYSQL_THD opaque_thd, - const char* lock_namespace, - const char**lock_names, - size_t lock_num, - enum enum_locking_service_lock_type lock_type, - unsigned long lock_timeout); - -int mysql_release_locking_service_locks(MYSQL_THD opaque_thd, - const char* lock_namespace); - -#endif /* MYSQL_DYNAMIC_PLUGIN */ - -#ifdef __cplusplus -} -#endif - -#endif /* SERVICE_LOCKING_INCLUDED */ |