| kern_lock.c (167366) | kern_lock.c (167368) |
|---|---|
| 1/*- 2 * Copyright (c) 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (C) 1997 6 * John S. Dyson. All rights reserved. 7 * 8 * This code contains ideas from software contributed to Berkeley by --- 27 unchanged lines hidden (view full) --- 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)kern_lock.c 8.18 (Berkeley) 5/21/95 41 */ 42 43#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (C) 1997 6 * John S. Dyson. All rights reserved. 7 * 8 * This code contains ideas from software contributed to Berkeley by --- 27 unchanged lines hidden (view full) --- 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)kern_lock.c 8.18 (Berkeley) 5/21/95 41 */ 42 43#include <sys/cdefs.h> |
| 44__FBSDID("$FreeBSD: head/sys/kern/kern_lock.c 167366 2007-03-09 16:19:34Z jhb $"); | 44__FBSDID("$FreeBSD: head/sys/kern/kern_lock.c 167368 2007-03-09 16:27:11Z jhb $"); |
| 45 46#include "opt_ddb.h" 47#include "opt_global.h" 48 49#include <sys/param.h> 50#include <sys/kdb.h> 51#include <sys/kernel.h> 52#include <sys/ktr.h> --- 6 unchanged lines hidden (view full) --- 59#ifdef DEBUG_LOCKS 60#include <sys/stack.h> 61#endif 62 63#ifdef DDB 64#include <ddb/ddb.h> 65static void db_show_lockmgr(struct lock_object *lock); 66#endif | 45 46#include "opt_ddb.h" 47#include "opt_global.h" 48 49#include <sys/param.h> 50#include <sys/kdb.h> 51#include <sys/kernel.h> 52#include <sys/ktr.h> --- 6 unchanged lines hidden (view full) --- 59#ifdef DEBUG_LOCKS 60#include <sys/stack.h> 61#endif 62 63#ifdef DDB 64#include <ddb/ddb.h> 65static void db_show_lockmgr(struct lock_object *lock); 66#endif |
| 67static void lock_lockmgr(struct lock_object *lock, int how); 68static int unlock_lockmgr(struct lock_object *lock); |
|
| 67 | 69 |
| 68 | |
| 69struct lock_class lock_class_lockmgr = { 70 .lc_name = "lockmgr", 71 .lc_flags = LC_SLEEPLOCK | LC_SLEEPABLE | LC_RECURSABLE | LC_UPGRADABLE, 72#ifdef DDB | 70struct lock_class lock_class_lockmgr = { 71 .lc_name = "lockmgr", 72 .lc_flags = LC_SLEEPLOCK | LC_SLEEPABLE | LC_RECURSABLE | LC_UPGRADABLE, 73#ifdef DDB |
| 73 .lc_ddb_show = db_show_lockmgr | 74 .lc_ddb_show = db_show_lockmgr, |
| 74#endif | 75#endif |
| 76 .lc_lock = lock_lockmgr, 77 .lc_unlock = unlock_lockmgr, |
|
| 75}; 76 | 78}; 79 |
| 77 | |
| 78/* 79 * Locking primitives implementation. 80 * Locks provide shared/exclusive sychronization. 81 */ 82 | 80/* 81 * Locking primitives implementation. 82 * Locks provide shared/exclusive sychronization. 83 */ 84 |
| 85void 86lock_lockmgr(struct lock_object *lock, int how) 87{ 88 89 panic("lockmgr locks do not support sleep interlocking"); 90} 91 92int 93unlock_lockmgr(struct lock_object *lock) 94{ 95 96 panic("lockmgr locks do not support sleep interlocking"); 97} 98 |
|
| 83#define COUNT(td, x) if ((td)) (td)->td_locks += (x) 84#define LK_ALL (LK_HAVE_EXCL | LK_WANT_EXCL | LK_WANT_UPGRADE | \ 85 LK_SHARE_NONZERO | LK_WAIT_NONZERO) 86 87static int acquire(struct lock **lkpp, int extflags, int wanted, int *contested, uint64_t *waittime); 88static int acquiredrain(struct lock *lkp, int extflags) ; 89 90static __inline void --- 595 unchanged lines hidden --- | 99#define COUNT(td, x) if ((td)) (td)->td_locks += (x) 100#define LK_ALL (LK_HAVE_EXCL | LK_WANT_EXCL | LK_WANT_UPGRADE | \ 101 LK_SHARE_NONZERO | LK_WAIT_NONZERO) 102 103static int acquire(struct lock **lkpp, int extflags, int wanted, int *contested, uint64_t *waittime); 104static int acquiredrain(struct lock *lkp, int extflags) ; 105 106static __inline void --- 595 unchanged lines hidden --- |