85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/* Copyright (c) 2008, 2019, 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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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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#ifndef COMPONENTS_SERVICES_MYSQL_RWLOCK_BITS_H
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#define COMPONENTS_SERVICES_MYSQL_RWLOCK_BITS_H
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/**
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@file
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Instrumentation helpers for rwlock.
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*/
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#include "mysql/components/services/thr_rwlock_bits.h"
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/**
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@defgroup psi_api_rwlock Rwlock Instrumentation (API)
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@ingroup psi_api
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@{
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*/
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/**
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An instrumented rwlock structure.
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@c mysql_rwlock_t is a drop-in replacement for @c pthread_rwlock_t.
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@sa mysql_rwlock_init
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@sa mysql_rwlock_rdlock
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@sa mysql_rwlock_tryrdlock
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@sa mysql_rwlock_wrlock
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@sa mysql_rwlock_trywrlock
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@sa mysql_rwlock_unlock
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@sa mysql_rwlock_destroy
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*/
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struct mysql_rwlock_t {
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/** The real rwlock */
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native_rw_lock_t m_rwlock;
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/**
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The instrumentation hook.
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Note that this hook is not conditionally defined,
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for binary compatibility of the @c mysql_rwlock_t interface.
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*/
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struct PSI_rwlock *m_psi;
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};
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/**
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An instrumented prlock structure.
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A prlock is a read write lock that 'prefers readers' (pr).
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@c mysql_prlock_t is a drop-in replacement for @c rw_pr_lock_t.
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@sa mysql_prlock_init
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@sa mysql_prlock_rdlock
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@sa mysql_prlock_wrlock
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@sa mysql_prlock_unlock
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@sa mysql_prlock_destroy
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*/
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struct mysql_prlock_t {
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/** The real prlock */
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rw_pr_lock_t m_prlock;
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/**
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The instrumentation hook.
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Note that this hook is not conditionally defined,
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for binary compatibility of the @c mysql_rwlock_t interface.
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*/
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struct PSI_rwlock *m_psi;
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};
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/** @} (end of group psi_api_rwlock) */
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#endif /* COMPONENTS_SERVICES_MYSQL_RWLOCK_BITS_H */
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