diff options
| author | jb <jb@FreeBSD.org> | 1998-06-09 08:28:49 +0000 |
|---|---|---|
| committer | jb <jb@FreeBSD.org> | 1998-06-09 08:28:49 +0000 |
| commit | fe07ac9fc2e529230108c3d5d61da473552a922c (patch) | |
| tree | 3332055d0c9769909106206a69f01f5afd2ab0ef /lib/libc/include | |
| parent | ffa72784691e6ee8eb7938c8910724280ad309cb (diff) | |
| download | FreeBSD-src-fe07ac9fc2e529230108c3d5d61da473552a922c.zip FreeBSD-src-fe07ac9fc2e529230108c3d5d61da473552a922c.tar.gz | |
Implement compile time debug support for spinlocks.
Simplify the atomic lock prototype, removing the lock value.
Delete the unlock prototypes that are not required.
Diffstat (limited to 'lib/libc/include')
| -rw-r--r-- | lib/libc/include/spinlock.h | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/lib/libc/include/spinlock.h b/lib/libc/include/spinlock.h index 50843ce..e313684 100644 --- a/lib/libc/include/spinlock.h +++ b/lib/libc/include/spinlock.h @@ -29,7 +29,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: spinlock.h,v 1.1 1998/03/09 05:05:32 jb Exp $ + * $Id: spinlock.h,v 1.2 1998/05/05 21:46:30 jb Exp $ * * Lock definitions used in both libc and libpthread. * @@ -38,15 +38,34 @@ #ifndef _SPINLOCK_H_ #define _SPINLOCK_H_ #include <sys/cdefs.h> +#include <sys/types.h> + +/* + * Lock structure with room for debugging information. + */ +typedef struct { + volatile long access_lock; + volatile long lock_owner; + volatile char *fname; + volatile int lineno; +} spinlock_t; + +#define _SPINLOCK_INITIALIZER { 0, 0, 0, 0 } + +#define _SPINUNLOCK(_lck) (_lck)->access_lock = 0 +#ifdef _LOCK_DEBUG +#define _SPINLOCK(_lck) _spinlock_debug(_lck, __FILE__, __LINE__) +#else +#define _SPINLOCK(_lck) _spinlock(_lck) +#endif /* * Thread function prototype definitions: */ __BEGIN_DECLS -long _atomic_lock __P((volatile long *, long)); -long _atomic_unlock __P((volatile long *)); -void _spinlock __P((volatile long *)); -void _spinunlock __P((volatile long *)); +long _atomic_lock __P((volatile long *)); +void _spinlock __P((spinlock_t *)); +void _spinlock_debug __P((spinlock_t *, char *, int)); __END_DECLS #endif /* _SPINLOCK_H_ */ |
