2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 /* rx_kmutex.h - mutex and condition variable macros for kernel environment.
12 * HPUX implementation.
18 #if defined(AFS_HPUX110_ENV) && defined(KERNEL)
19 /* rx fine grain locking primitives */
21 #include <sys/ksleep.h>
22 #include <sys/spinlock.h>
23 #include <sys/sem_beta.h>
24 #include <sys/errno.h>
25 #include <net/netmp.h>
27 #include "../rx/rx_kernel.h" /* For osi_Panic() */
29 #define RX_ENABLE_LOCKS 1
31 extern lock_t *rx_sleepLock;
33 /* We use beta semaphores instead of sync semaphores for Rx locks as
34 * recommended by HP labs. Sync semaphores are not supported by HP
38 #define CV_INIT(cv,a,b,c)
40 /* This is supposed to atomically drop the mutex and go to sleep
41 * and reacquire the mutex when it wakes up.
44 /* With 11.23, ksleep_prepare is not defined anywhere and
45 * ksleep_one is only referenced in a comment. sleep, get_sleep_lock
46 * and wakeup are defined in driver manuals.
47 * This works with 11.0, 11i, and 11.23
48 * Note: wakeup wakes up all threads waiting on cv.
51 #define CV_WAIT(cv, lck) \
53 get_sleep_lock((caddr_t)(cv)); \
54 if (!b_owns_sema(lck)) \
55 osi_Panic("CV_WAIT mutex not held \n"); \
57 sleep((caddr_t)(cv), PRIBIO); \
61 #define CV_SIGNAL(cv) \
63 lock_t * sleep_lock = get_sleep_lock((caddr_t)(cv)); \
64 wakeup((caddr_t)(cv)); \
65 spinunlock(sleep_lock); \
68 #define CV_BROADCAST(cv) \
70 lock_t * sleep_lock = get_sleep_lock((caddr_t)(cv)); \
71 wakeup((caddr_t)(cv)); \
72 spinunlock(sleep_lock); \
78 /* We now use beta semaphores for mutexes */
79 typedef b_sema_t afs_kmutex_t;
80 typedef caddr_t afs_kcondvar_t;
82 #else /* AFS_HPUX110_ENV */
84 #if defined(AFS_HPUX102_ENV)
85 #define CV_INIT(a,b,c,d)
87 #endif /* AFS_HPUX102_ENV */
88 #endif /* else AFS_HPUX110_ENV */
90 #ifdef AFS_HPUX102_ENV
92 #if defined(AFS_HPUX110_ENV)
94 #define AFS_RX_ORDER 30
96 #define MUTEX_INIT(a,b,c,d) b_initsema((a), 1, AFS_RX_ORDER, (b))
97 #define MUTEX_DESTROY(a)
99 #define MUTEX_TRYENTER(a) b_cpsema(a)
101 #ifdef AFS_HPUX1111_ENV
102 #define MUTEX_ENTER(a) \
103 ((b_owns_sema(a)) ? osi_Panic("Already Held") : b_psema(a))
104 #define MUTEX_EXIT(a) \
105 ((b_owns_sema(a)) ? b_vsema(a) : osi_Panic("mutex not held"))
107 #define MUTEX_ENTER(a) \
108 ((b_owns_sema(a)) ? (osi_Panic("Already Held"), 0) : b_psema(a))
110 #define MUTEX_EXIT(a) \
111 ((b_owns_sema(a)) ? b_vsema(a) : (osi_Panic("mutex not held"), 0))
114 #define MUTEX_ASSERT(a) osi_Assert(b_owns_sema(a))
116 #else /* AFS_HPUX110_ENV */
118 #define MUTEX_DESTROY(a)
119 #define MUTEX_ENTER(a)
120 #define MUTEX_TRYENTER(a) 1
121 #define MUTEX_EXIT(a)
122 #define MUTEX_INIT(a,b,c,d)
123 #define MUTEX_ASSERT(a)
125 #endif /* else AFS_HPUX110_ENV */
126 #endif /* AFS_HPUX102_ENV */
127 #endif /* _RX_KMUTEX_H_ */