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Edit File: struct_mutex.h
/* 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