| lock.h (115080) | lock.h (115278) |
|---|---|
| 1/* 2 * Copyright (c) 2001, 2003 Daniel Eischen <deischen@freebsd.org>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/* 2 * Copyright (c) 2001, 2003 Daniel Eischen <deischen@freebsd.org>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
| 26 * $FreeBSD: head/lib/libkse/sys/lock.h 115080 2003-05-16 19:58:30Z deischen $ | 26 * $FreeBSD: head/lib/libkse/sys/lock.h 115278 2003-05-24 02:29:25Z deischen $ |
| 27 */ 28 29#ifndef _LOCK_H_ 30#define _LOCK_H_ 31 32struct lockreq; 33struct lockuser; 34struct lock; --- 14 unchanged lines hidden (view full) --- 49 lock_handler_t *l_wakeup; /* only used for adaptive locks */ 50}; 51 52/* Try to make this >= CACHELINESIZE */ 53struct lockreq { 54 volatile long lr_locked; /* lock granted = 0, busy otherwise */ 55 struct lockuser *lr_watcher; /* only used for priority locks */ 56 struct lockuser *lr_owner; /* only used for priority locks */ | 27 */ 28 29#ifndef _LOCK_H_ 30#define _LOCK_H_ 31 32struct lockreq; 33struct lockuser; 34struct lock; --- 14 unchanged lines hidden (view full) --- 49 lock_handler_t *l_wakeup; /* only used for adaptive locks */ 50}; 51 52/* Try to make this >= CACHELINESIZE */ 53struct lockreq { 54 volatile long lr_locked; /* lock granted = 0, busy otherwise */ 55 struct lockuser *lr_watcher; /* only used for priority locks */ 56 struct lockuser *lr_owner; /* only used for priority locks */ |
| 57 long lr_waiting; /* non-zero when wakeup needed */ | |
| 58 volatile int lr_active; /* non-zero if the lock is last lock for thread */ 59}; 60 61struct lockuser { 62 struct lockreq *lu_myreq; /* request to give up/trade */ 63 struct lockreq *lu_watchreq; /* watch this request */ 64 int lu_priority; /* only used for priority locks */ 65 void *lu_private1; /* private{1,2} are initialized to */ 66 void *lu_private2; /* NULL and can be used by caller */ 67#define lu_private lu_private1 68}; 69 70#define _LCK_INITIALIZER(lck_req) { &lck_req, NULL, LCK_DEFAULT, \ 71 NULL, NULL } 72#define _LCK_REQUEST_INITIALIZER { 0, NULL, NULL, 0 } 73 74#define _LCK_BUSY(lu) ((lu)->lu_watchreq->lr_locked != 0) 75#define _LCK_ACTIVE(lu) ((lu)->lu_watchreq->lr_active != 0) | 57 volatile int lr_active; /* non-zero if the lock is last lock for thread */ 58}; 59 60struct lockuser { 61 struct lockreq *lu_myreq; /* request to give up/trade */ 62 struct lockreq *lu_watchreq; /* watch this request */ 63 int lu_priority; /* only used for priority locks */ 64 void *lu_private1; /* private{1,2} are initialized to */ 65 void *lu_private2; /* NULL and can be used by caller */ 66#define lu_private lu_private1 67}; 68 69#define _LCK_INITIALIZER(lck_req) { &lck_req, NULL, LCK_DEFAULT, \ 70 NULL, NULL } 71#define _LCK_REQUEST_INITIALIZER { 0, NULL, NULL, 0 } 72 73#define _LCK_BUSY(lu) ((lu)->lu_watchreq->lr_locked != 0) 74#define _LCK_ACTIVE(lu) ((lu)->lu_watchreq->lr_active != 0) |
| 76#define _LCK_GRANTED(lu) ((lu)->lu_watchreq->lr_locked == 0) | 75#define _LCK_GRANTED(lu) ((lu)->lu_watchreq->lr_locked == 3) |
| 77 78#define _LCK_SET_PRIVATE(lu, p) (lu)->lu_private = (void *)(p) 79#define _LCK_GET_PRIVATE(lu) (lu)->lu_private 80#define _LCK_SET_PRIVATE2(lu, p) (lu)->lu_private2 = (void *)(p) 81#define _LCK_GET_PRIVATE2(lu) (lu)->lu_private2 82 83void _lock_destroy(struct lock *); 84int _lock_init(struct lock *, enum lock_type, 85 lock_handler_t *, lock_handler_t *); 86int _lockuser_init(struct lockuser *lu, void *priv); 87void _lockuser_destroy(struct lockuser *lu); 88void _lockuser_setactive(struct lockuser *lu, int active); 89void _lock_acquire(struct lock *, struct lockuser *, int); 90void _lock_release(struct lock *, struct lockuser *); 91void _lock_grant(struct lock *, struct lockuser *); 92 93#endif | 76 77#define _LCK_SET_PRIVATE(lu, p) (lu)->lu_private = (void *)(p) 78#define _LCK_GET_PRIVATE(lu) (lu)->lu_private 79#define _LCK_SET_PRIVATE2(lu, p) (lu)->lu_private2 = (void *)(p) 80#define _LCK_GET_PRIVATE2(lu) (lu)->lu_private2 81 82void _lock_destroy(struct lock *); 83int _lock_init(struct lock *, enum lock_type, 84 lock_handler_t *, lock_handler_t *); 85int _lockuser_init(struct lockuser *lu, void *priv); 86void _lockuser_destroy(struct lockuser *lu); 87void _lockuser_setactive(struct lockuser *lu, int active); 88void _lock_acquire(struct lock *, struct lockuser *, int); 89void _lock_release(struct lock *, struct lockuser *); 90void _lock_grant(struct lock *, struct lockuser *); 91 92#endif |