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https://github.com/MariaDB/server.git
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db0c28eff8
Find and fix missing virtual override markings. Updates cmake maintainer flags to include -Wsuggest-override and -Winconsistent-missing-override.
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
#ifndef SYS_VARS_SHARED_INCLUDED
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#define SYS_VARS_SHARED_INCLUDED
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/* Copyright (c) 2002, 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
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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/**
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@file
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"protected" interface to sys_var - server configuration variables.
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This header is included by files implementing support and utility
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functions of sys_var's (set_var.cc) and files implementing
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classes in the sys_var hierarchy (sql_plugin.cc)
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*/
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#include <sql_priv.h>
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#include "set_var.h"
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extern bool throw_bounds_warning(THD *thd, const char *name,const char *v);
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extern bool throw_bounds_warning(THD *thd, const char *name,
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bool fixed, bool is_unsigned, longlong v);
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extern bool throw_bounds_warning(THD *thd, const char *name, bool fixed,
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double v);
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extern sys_var *intern_find_sys_var(const char *str, size_t length);
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extern sys_var_chain all_sys_vars;
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/** wrapper to hide a mutex and an rwlock under a common interface */
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class PolyLock
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{
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public:
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virtual void rdlock()= 0;
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virtual void wrlock()= 0;
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virtual void unlock()= 0;
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virtual ~PolyLock() = default;
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};
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class PolyLock_mutex: public PolyLock
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{
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mysql_mutex_t *mutex;
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public:
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PolyLock_mutex(mysql_mutex_t *arg): mutex(arg) {}
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void rdlock() override { mysql_mutex_lock(mutex); }
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void wrlock() override { mysql_mutex_lock(mutex); }
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void unlock() override { mysql_mutex_unlock(mutex); }
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};
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class PolyLock_rwlock: public PolyLock
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{
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mysql_rwlock_t *rwlock;
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public:
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PolyLock_rwlock(mysql_rwlock_t *arg): rwlock(arg) {}
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void rdlock() override { mysql_rwlock_rdlock(rwlock); }
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void wrlock() override { mysql_rwlock_wrlock(rwlock); }
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void unlock() override { mysql_rwlock_unlock(rwlock); }
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};
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class AutoWLock
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{
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PolyLock *lock;
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public:
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AutoWLock(PolyLock *l) : lock(l) { if (lock) lock->wrlock(); }
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~AutoWLock() { if (lock) lock->unlock(); }
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};
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class AutoRLock
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{
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PolyLock *lock;
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public:
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AutoRLock(PolyLock *l) : lock(l) { if (lock) lock->rdlock(); }
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~AutoRLock() { if (lock) lock->unlock(); }
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};
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#endif /* SYS_VARS_SHARED_INCLUDED */
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