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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /sql/sys_vars_shared.h | |
parent | Initial commit. (diff) | |
download | mariadb-10.5-upstream/1%10.5.12.tar.xz mariadb-10.5-upstream/1%10.5.12.zip |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | sql/sys_vars_shared.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/sql/sys_vars_shared.h b/sql/sys_vars_shared.h new file mode 100644 index 00000000..bc48d1f7 --- /dev/null +++ b/sql/sys_vars_shared.h @@ -0,0 +1,87 @@ +#ifndef SYS_VARS_SHARED_INCLUDED +#define SYS_VARS_SHARED_INCLUDED + +/* Copyright (c) 2002, 2010, 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 02110-1335 USA */ + +/** + @file + "protected" interface to sys_var - server configuration variables. + + This header is included by files implementing support and utility + functions of sys_var's (set_var.cc) and files implementing + classes in the sys_var hierarchy (sql_plugin.cc) +*/ + +#include <sql_priv.h> +#include "set_var.h" + +extern bool throw_bounds_warning(THD *thd, const char *name,const char *v); +extern bool throw_bounds_warning(THD *thd, const char *name, + bool fixed, bool is_unsigned, longlong v); +extern bool throw_bounds_warning(THD *thd, const char *name, bool fixed, + double v); +extern sys_var *intern_find_sys_var(const char *str, size_t length); + +extern sys_var_chain all_sys_vars; + +/** wrapper to hide a mutex and an rwlock under a common interface */ +class PolyLock +{ +public: + virtual void rdlock()= 0; + virtual void wrlock()= 0; + virtual void unlock()= 0; + virtual ~PolyLock() {} +}; + +class PolyLock_mutex: public PolyLock +{ + mysql_mutex_t *mutex; +public: + PolyLock_mutex(mysql_mutex_t *arg): mutex(arg) {} + void rdlock() { mysql_mutex_lock(mutex); } + void wrlock() { mysql_mutex_lock(mutex); } + void unlock() { mysql_mutex_unlock(mutex); } +}; + +class PolyLock_rwlock: public PolyLock +{ + mysql_rwlock_t *rwlock; +public: + PolyLock_rwlock(mysql_rwlock_t *arg): rwlock(arg) {} + void rdlock() { mysql_rwlock_rdlock(rwlock); } + void wrlock() { mysql_rwlock_wrlock(rwlock); } + void unlock() { mysql_rwlock_unlock(rwlock); } +}; + +class AutoWLock +{ + PolyLock *lock; +public: + AutoWLock(PolyLock *l) : lock(l) { if (lock) lock->wrlock(); } + ~AutoWLock() { if (lock) lock->unlock(); } +}; + +class AutoRLock +{ + PolyLock *lock; +public: + AutoRLock(PolyLock *l) : lock(l) { if (lock) lock->rdlock(); } + ~AutoRLock() { if (lock) lock->unlock(); } +}; + + +#endif /* SYS_VARS_SHARED_INCLUDED */ |