diff options
Diffstat (limited to 'sysdeps/htl/bits/types/struct___pthread_rwlock.h')
| -rw-r--r-- | sysdeps/htl/bits/types/struct___pthread_rwlock.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/sysdeps/htl/bits/types/struct___pthread_rwlock.h b/sysdeps/htl/bits/types/struct___pthread_rwlock.h new file mode 100644 index 0000000000..cf47671240 --- /dev/null +++ b/sysdeps/htl/bits/types/struct___pthread_rwlock.h @@ -0,0 +1,45 @@ +/* rwlock type. Generic version. + Copyright (C) 2002-2018 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see <http://www.gnu.org/licenses/>. */ + +#ifndef _BITS_TYPES_STRUCT___PTHREAD_RWLOCK_H +#define _BITS_TYPES_STRUCT___PTHREAD_RWLOCK_H + +#include <bits/types/__pthread_spinlock_t.h> + +/* User visible part of a rwlock. If __held is not held and readers + is 0, then the lock is unlocked. If __held is held and readers is + 0, then the lock is held by a writer. If __held is held and + readers is greater than 0, then the lock is held by READERS + readers. */ +struct __pthread_rwlock +{ + __pthread_spinlock_t __held; + __pthread_spinlock_t __lock; + int __readers; + struct __pthread *__readerqueue; + struct __pthread *__writerqueue; + struct __pthread_rwlockattr *__attr; + void *__data; +}; + +/* Initializer for a rwlock. */ +#define __PTHREAD_RWLOCK_INITIALIZER \ + { __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, 0, 0, 0 } + + +#endif /* bits/types/struct___pthread_rwlock.h */ |