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| 1 | /* Definitions of user-visible names for spin locks. |
|---|---|
| 2 | Copyright (C) 1994-2024 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <https://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _BITS_SPIN_LOCK_INLINE_H |
| 20 | #define _BITS_SPIN_LOCK_INLINE_H 1 |
| 21 | |
| 22 | #include <features.h> |
| 23 | #include <bits/types/__pthread_spinlock_t.h> |
| 24 | #include <lock-intern.h> /* This does all the work. */ |
| 25 | |
| 26 | __BEGIN_DECLS |
| 27 | |
| 28 | #if defined __USE_EXTERN_INLINES || defined _FORCE_INLINES |
| 29 | |
| 30 | # ifndef __EBUSY |
| 31 | # include <errno.h> |
| 32 | # define __EBUSY EBUSY |
| 33 | # endif |
| 34 | |
| 35 | # ifndef __PT_SPIN_INLINE |
| 36 | # define __PT_SPIN_INLINE __extern_inline |
| 37 | # endif |
| 38 | |
| 39 | __PT_SPIN_INLINE int __pthread_spin_destroy (__pthread_spinlock_t *__lock); |
| 40 | |
| 41 | __PT_SPIN_INLINE int |
| 42 | __pthread_spin_destroy (__pthread_spinlock_t *__lock) |
| 43 | { |
| 44 | return 0; |
| 45 | } |
| 46 | |
| 47 | __PT_SPIN_INLINE int __pthread_spin_init (__pthread_spinlock_t *__lock, |
| 48 | int __pshared); |
| 49 | |
| 50 | __PT_SPIN_INLINE int |
| 51 | __pthread_spin_init (__pthread_spinlock_t *__lock, int __pshared) |
| 52 | { |
| 53 | *__lock = __PTHREAD_SPIN_LOCK_INITIALIZER; |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | __PT_SPIN_INLINE int __pthread_spin_trylock (__pthread_spinlock_t *__lock); |
| 58 | |
| 59 | __PT_SPIN_INLINE int |
| 60 | __pthread_spin_trylock (__pthread_spinlock_t *__lock) |
| 61 | { |
| 62 | return __spin_try_lock ((__spin_lock_t *) __lock) ? 0 : __EBUSY; |
| 63 | } |
| 64 | |
| 65 | __PT_SPIN_INLINE int __pthread_spin_lock (__pthread_spinlock_t *__lock); |
| 66 | |
| 67 | __PT_SPIN_INLINE int |
| 68 | __pthread_spin_lock (__pthread_spinlock_t *__lock) |
| 69 | { |
| 70 | __spin_lock_solid ((__spin_lock_t *) __lock); |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | __PT_SPIN_INLINE int __pthread_spin_wait (__pthread_spinlock_t *__lock); |
| 75 | |
| 76 | __PT_SPIN_INLINE int |
| 77 | __pthread_spin_wait (__pthread_spinlock_t *__lock) |
| 78 | { |
| 79 | __spin_lock ((__spin_lock_t *) __lock); |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | __PT_SPIN_INLINE int __pthread_spin_unlock (__pthread_spinlock_t *__lock); |
| 84 | |
| 85 | __PT_SPIN_INLINE int |
| 86 | __pthread_spin_unlock (__pthread_spinlock_t *__lock) |
| 87 | { |
| 88 | __spin_unlock ((__spin_lock_t *) __lock); |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | #endif /* Use extern inlines or force inlines. */ |
| 93 | |
| 94 | __END_DECLS |
| 95 | |
| 96 | #endif /* bits/types/__pthread_spinlock_t.h */ |
| 97 |
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