| lockmgr.h (70141) | lockmgr.h (71576) |
|---|---|
| 1/* 2 * Copyright (c) 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code contains ideas from software contributed to Berkeley by 6 * Avadis Tevanian, Jr., Michael Wayne Young, and the Mach Operating 7 * System project at Carnegie-Mellon University. 8 * --- 21 unchanged lines hidden (view full) --- 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)lock.h 8.12 (Berkeley) 5/19/95 | 1/* 2 * Copyright (c) 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code contains ideas from software contributed to Berkeley by 6 * Avadis Tevanian, Jr., Michael Wayne Young, and the Mach Operating 7 * System project at Carnegie-Mellon University. 8 * --- 21 unchanged lines hidden (view full) --- 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)lock.h 8.12 (Berkeley) 5/19/95 |
| 38 * $FreeBSD: head/sys/sys/lockmgr.h 70140 2000-12-18 05:50:31Z jake $ | 38 * $FreeBSD: head/sys/sys/lockmgr.h 71576 2001-01-24 12:35:55Z jasone $ |
| 39 */ 40 41#ifndef _LOCK_H_ 42#define _LOCK_H_ 43 44#include <machine/lock.h> 45 46struct mtx; 47 48/* 49 * The general lock structure. Provides for multiple shared locks, 50 * upgrading from shared to exclusive, and sleeping until the lock | 39 */ 40 41#ifndef _LOCK_H_ 42#define _LOCK_H_ 43 44#include <machine/lock.h> 45 46struct mtx; 47 48/* 49 * The general lock structure. Provides for multiple shared locks, 50 * upgrading from shared to exclusive, and sleeping until the lock |
| 51 * can be gained. The simple locks are defined in <machine/param.h>. | 51 * can be gained. |
| 52 */ 53struct lock { 54 struct mtx *lk_interlock; /* lock on remaining fields */ 55 u_int lk_flags; /* see below */ 56 int lk_sharecount; /* # of accepted shared locks */ 57 int lk_waitcount; /* # of processes sleeping for lock */ 58 short lk_exclusivecount; /* # of recursive exclusive locks */ 59 short lk_prio; /* priority at which to sleep */ --- 156 unchanged lines hidden (view full) --- 216#else 217int lockmgr __P((struct lock *, u_int flags, 218 struct mtx *, struct proc *p)); 219#endif 220void lockmgr_printinfo __P((struct lock *)); 221int lockstatus __P((struct lock *, struct proc *)); 222int lockcount __P((struct lock *)); 223 | 52 */ 53struct lock { 54 struct mtx *lk_interlock; /* lock on remaining fields */ 55 u_int lk_flags; /* see below */ 56 int lk_sharecount; /* # of accepted shared locks */ 57 int lk_waitcount; /* # of processes sleeping for lock */ 58 short lk_exclusivecount; /* # of recursive exclusive locks */ 59 short lk_prio; /* priority at which to sleep */ --- 156 unchanged lines hidden (view full) --- 216#else 217int lockmgr __P((struct lock *, u_int flags, 218 struct mtx *, struct proc *p)); 219#endif 220void lockmgr_printinfo __P((struct lock *)); 221int lockstatus __P((struct lock *, struct proc *)); 222int lockcount __P((struct lock *)); 223 |
| 224#ifdef SIMPLELOCK_DEBUG 225void _simple_unlock __P((struct simplelock *alp, const char *, int)); 226#define simple_unlock(alp) _simple_unlock(alp, __FILE__, __LINE__) 227int _simple_lock_try __P((struct simplelock *alp, const char *, int)); 228#define simple_lock_try(alp) _simple_lock_try(alp, __FILE__, __LINE__) 229void _simple_lock __P((struct simplelock *alp, const char *, int)); 230#define simple_lock(alp) _simple_lock(alp, __FILE__, __LINE__) 231void simple_lock_init __P((struct simplelock *alp)); 232#else /* !SIMPLELOCK_DEBUG */ 233#if MAXCPU == 1 /* no multiprocessor locking is necessary */ 234#define NULL_SIMPLELOCKS 235#define simple_lock_init(alp) 236#define simple_lock(alp) 237#define simple_lock_try(alp) (1) /* always succeeds */ 238#define simple_unlock(alp) 239#endif /* MAXCPU == 1 */ 240#endif /* !SIMPLELOCK_DEBUG */ 241 | |
| 242#endif /* !_LOCK_H_ */ | 224#endif /* !_LOCK_H_ */ |