diff options
| -rw-r--r-- | lib/libc_r/include/spinlock.h | 79 | ||||
| -rw-r--r-- | lib/libpthread/include/spinlock.h | 79 |
2 files changed, 158 insertions, 0 deletions
diff --git a/lib/libc_r/include/spinlock.h b/lib/libc_r/include/spinlock.h new file mode 100644 index 00000000000..0c49f5ec5df --- /dev/null +++ b/lib/libc_r/include/spinlock.h @@ -0,0 +1,79 @@ +/* + * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by John Birrell. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: spinlock.h,v 1.1 1998/12/21 07:58:55 d Exp $ + * $OpenBSD: spinlock.h,v 1.1 1998/12/21 07:58:55 d Exp $ + * + * Lock definitions used in both libc and libpthread. + * + */ + +#ifndef _SPINLOCK_H_ +#define _SPINLOCK_H_ +#include <sys/cdefs.h> +#include <sys/types.h> +#include "_spinlock.h" + +/* + * Lock structure with room for debugging information. + */ +typedef struct { + volatile _spinlock_lock_t access_lock; + volatile long lock_owner; + volatile const char * fname; + volatile int lineno; +} spinlock_t; + +#define _SPINLOCK_INITIALIZER { _SPINLOCK_UNLOCKED, 0, 0, 0 } + +#define _SPINUNLOCK(_lck) (_lck)->access_lock = _SPINLOCK_UNLOCKED +#ifdef _LOCK_DEBUG +#define _SPINLOCK(_lck) _spinlock_debug(_lck, __FILE__, __LINE__) +#else +#define _SPINLOCK(_lck) _spinlock(_lck) +#endif + +/* + * Thread function prototype definitions: + */ +__BEGIN_DECLS +void _spinlock __P((spinlock_t *)); +void _spinlock_debug __P((spinlock_t *, const char *, int)); + +/* lock() functions return 0 if lock was acquired. */ +/* is_locked functions() return 1 if lock is locked. */ +int _atomic_lock __P((volatile _spinlock_lock_t *)); +int _atomic_is_locked __P((volatile _spinlock_lock_t *)); +int _thread_slow_atomic_lock __P((volatile _spinlock_lock_t *)); +int _thread_slow_atomic_is_locked __P((volatile _spinlock_lock_t *)); +__END_DECLS + +#endif /* _SPINLOCK_H_ */ diff --git a/lib/libpthread/include/spinlock.h b/lib/libpthread/include/spinlock.h new file mode 100644 index 00000000000..0c49f5ec5df --- /dev/null +++ b/lib/libpthread/include/spinlock.h @@ -0,0 +1,79 @@ +/* + * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by John Birrell. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: spinlock.h,v 1.1 1998/12/21 07:58:55 d Exp $ + * $OpenBSD: spinlock.h,v 1.1 1998/12/21 07:58:55 d Exp $ + * + * Lock definitions used in both libc and libpthread. + * + */ + +#ifndef _SPINLOCK_H_ +#define _SPINLOCK_H_ +#include <sys/cdefs.h> +#include <sys/types.h> +#include "_spinlock.h" + +/* + * Lock structure with room for debugging information. + */ +typedef struct { + volatile _spinlock_lock_t access_lock; + volatile long lock_owner; + volatile const char * fname; + volatile int lineno; +} spinlock_t; + +#define _SPINLOCK_INITIALIZER { _SPINLOCK_UNLOCKED, 0, 0, 0 } + +#define _SPINUNLOCK(_lck) (_lck)->access_lock = _SPINLOCK_UNLOCKED +#ifdef _LOCK_DEBUG +#define _SPINLOCK(_lck) _spinlock_debug(_lck, __FILE__, __LINE__) +#else +#define _SPINLOCK(_lck) _spinlock(_lck) +#endif + +/* + * Thread function prototype definitions: + */ +__BEGIN_DECLS +void _spinlock __P((spinlock_t *)); +void _spinlock_debug __P((spinlock_t *, const char *, int)); + +/* lock() functions return 0 if lock was acquired. */ +/* is_locked functions() return 1 if lock is locked. */ +int _atomic_lock __P((volatile _spinlock_lock_t *)); +int _atomic_is_locked __P((volatile _spinlock_lock_t *)); +int _thread_slow_atomic_lock __P((volatile _spinlock_lock_t *)); +int _thread_slow_atomic_is_locked __P((volatile _spinlock_lock_t *)); +__END_DECLS + +#endif /* _SPINLOCK_H_ */ |