69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/* Copyright (c) 2014, 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_THR_MUTEX_BITS_H
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#define COMPONENTS_SERVICES_THR_MUTEX_BITS_H
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#if defined(_WIN32)
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#include <windows.h>
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#else
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#include <pthread.h> // IWYU pragma: export
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#include <sched.h> // IWYU pragma: export
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#endif
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/**
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@file
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ABI for thd_mutex
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There are three "layers":
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1) native_mutex_*()
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Functions that map directly down to OS primitives.
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Windows - CriticalSection
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Other OSes - pthread
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2) my_mutex_*()
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Functions that implement SAFE_MUTEX (default for debug),
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Otherwise native_mutex_*() is used.
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3) mysql_mutex_*()
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Functions that include Performance Schema instrumentation.
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See include/mysql/psi/mysql_thread.h
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*/
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#ifdef _WIN32
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typedef CRITICAL_SECTION native_mutex_t;
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typedef int native_mutexattr_t;
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#else
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typedef pthread_mutex_t native_mutex_t;
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typedef pthread_mutexattr_t native_mutexattr_t;
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#endif
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struct safe_mutex_t;
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struct my_mutex_t {
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union u {
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native_mutex_t m_native;
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safe_mutex_t *m_safe_ptr;
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} m_u;
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};
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typedef struct my_mutex_t my_mutex_t;
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#endif /* COMPONENTS_SERVICES_THR_MUTEX_BITS_H */
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