| /* x86 internal mutex struct definitions. |
| Copyright (C) 2019-2021 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _THREAD_MUTEX_INTERNAL_H |
| #define _THREAD_MUTEX_INTERNAL_H 1 |
| |
| struct __pthread_mutex_s |
| { |
| int __lock; |
| unsigned int __count; |
| int __owner; |
| #ifdef __x86_64__ |
| unsigned int __nusers; |
| #endif |
| /* KIND must stay at this position in the structure to maintain |
| binary compatibility with static initializers. */ |
| int __kind; |
| #ifdef __x86_64__ |
| short __spins; |
| short __elision; |
| __pthread_list_t __list; |
| # define __PTHREAD_MUTEX_HAVE_PREV 1 |
| #else |
| unsigned int __nusers; |
| __extension__ union |
| { |
| struct |
| { |
| short __espins; |
| short __eelision; |
| # define __spins __elision_data.__espins |
| # define __elision __elision_data.__eelision |
| } __elision_data; |
| __pthread_slist_t __list; |
| }; |
| # define __PTHREAD_MUTEX_HAVE_PREV 0 |
| #endif |
| }; |
| |
| #ifdef __x86_64__ |
| # define __PTHREAD_MUTEX_INITIALIZER(__kind) \ |
| 0, 0, 0, 0, __kind, 0, 0, { 0, 0 } |
| #else |
| # define __PTHREAD_MUTEX_INITIALIZER(__kind) \ |
| 0, 0, 0, __kind, 0, { { 0, 0 } } |
| #endif |
| |
| #endif |