/*
* Copyright 2000, International Business Machines Corporation and others.
* All Rights Reserved.
- *
+ *
* This software has been released under the terms of the IBM Public
* License. For details, see the LICENSE file in the top-level source
* directory or online at http://www.openafs.org/dl/license10.html
* LICENSED MATERIALS - PROPERTY OF IBM
*/
-#if (defined(AFS_SUN5_ENV)) || defined(AFS_OSF_ENV)
+#if (defined(AFS_SUN5_ENV))
#define AFS_NOBOZO_LOCK
#endif
-#if !defined(AFS_OSF20_ENV) || defined(AFS_OSF30_ENV) || defined(AFS_OSF32_ENV)
- /* We do not instrument locks on osf20 because the vcache structure
- ** exceeds the maximim possible limit for a vnode.
- */
#define INSTRUMENT_LOCKS
/* This is the max lock number in use. Please update it if you add any new
* lock numbers.
*/
-#define MAX_LOCK_NUMBER 700
-#endif
+#define MAX_LOCK_NUMBER 780
struct afs_bozoLock {
short count; /* count of excl locks */
char flags; /* bit 1: is anyone waiting? */
char spare; /* for later */
- char *proc; /* process holding the lock, really a struct proc * */
+ char *proc; /* process holding the lock, really an afs_proc_t * */
};
#ifndef AFS_NOBOZO_LOCK
typedef struct afs_bozoLock afs_bozoLock_t;
#define AFS_BOZONWAITING 1 /* someone is waiting for this lock */
-#undef MObtainWriteLock /* Defined also in ../rx/rx_machdep.h" */
-#undef MReleaseWriteLock
-#define MObtainReadLock(lock) ObtainReadLock(lock)
-#define MObtainWriteLock(lock,src) ObtainWriteLock(lock,src)
-#define MObtainSharedLock(lock,src) ObtainSharedLock(lock,src)
-#define MUpgradeSToWLock(lock,src) UpgradeSToWLock(lock,src)
-#define MConvertWToSLock(lock) ConvertWToSLock(lock)
-#define MReleaseReadLock(lock) ReleaseReadLock(lock)
-#define MReleaseWriteLock(lock) ReleaseWriteLock(lock)
-#define MReleaseSharedLock(lock) ReleaseSharedLock(lock)
-
-#define RWLOCK_INIT(lock, nm) Lock_Init(lock)
+#define AFS_RWLOCK_INIT(lock, nm) Lock_Init(lock)
#undef LOCK_INIT
#define LOCK_INIT(lock, nm) Lock_Init(lock)
#define BEGINMAC do {
#define ENDMAC } while (0)
-#if defined(AFS_SUN57_ENV)
-#define MyPidxx (curthread->t_did)
-#else
-#if defined(AFS_OBSD_ENV) || defined(AFS_SUN5_ENV)
-#define MyPidxx (curproc->p_pid)
-#else
-#if defined(AFS_AIX41_ENV)
+#if defined(UKERNEL)
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx (get_user_struct()->u_procp->p_pid )
+# define MyPidxx2Pid(x) (x)
+#elif defined(AFS_SUN5_ENV)
+typedef kthread_t * afs_lock_tracker_t;
+# define MyPidxx (curthread)
+# define MyPidxx2Pid(x) (x ? ttoproc(x)->p_pid : 0)
+#elif defined(AFS_SUN5_ENV) || defined(AFS_OBSD_ENV)
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx (curproc->p_pid)
+# define MyPidxx2Pid(x) (x)
+#elif defined(AFS_AIX41_ENV)
+typedef tid_t afs_lock_tracker_t;
extern tid_t thread_self();
-#define MyPidxx thread_self()
-#else /* AFS_AIX41_ENV */
-#if defined(AFS_HPUX101_ENV)
-#define MyPidxx ((int)p_pid(u.u_procp))
-#else
-#if defined(AFS_SGI64_ENV)
-#if defined(AFS_SGI65_ENV)
-#define MyPidxx proc_pid(curproc())
-#else
-#define MyPidxx current_pid()
-#endif
-#else /* AFS_SGI64_ENV */
-#ifdef AFS_LINUX20_ENV
-#define MyPidxx current->pid
+# define MyPidxx (thread_self())
+# define MyPidxx2Pid(x) ((afs_int32)(x))
+#elif defined(AFS_HPUX101_ENV)
+# if defined(AFS_HPUX1111_ENV)
+typedef struct kthread * afs_lock_tracker_t;
+# define MyPidxx (u.u_kthreadp)
+# define MyPidxx2Pid(x) (x ? kt_tid(x) : 0)
+# else
+typedef afs_proc_t * afs_lock_tracker_t;
+# define MyPidxx (u.u_procp)
+# define MyPidxx2Pid(x) (x ? (afs_int32)p_pid(x) : 0)
+# endif
+#elif defined(AFS_SGI64_ENV)
+# if defined(AFS_SGI65_ENV)
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx proc_pid(curproc())
+# define MyPidxx2Pid(x) (x)
+# else
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx current_pid()
+# define MyPidxx2Pid(x) (x)
+# endif
+#elif defined(AFS_LINUX20_ENV)
+typedef struct task_struct * afs_lock_tracker_t;
+# define MyPidxx (current)
+# define MyPidxx2Pid(x) (x? (x)->pid : 0)
+#elif defined(AFS_DARWIN_ENV)
+# if defined(AFS_DARWIN80_ENV)
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx (proc_selfpid())
+# define MyPidxx2Pid(x) (x)
+# else
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx (current_proc()->p_pid )
+# define MyPidxx2Pid(x) (x)
+# endif
+#elif defined(AFS_FBSD_ENV)
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx (curproc->p_pid )
+# define MyPidxx2Pid(x) (x)
+#elif defined(AFS_NBSD40_ENV)
+typedef unsigned int afs_lock_tracker_t;
+#define MyPidxx osi_getpid() /* XXX could generalize this (above) */
+#define MyPidxx2Pid(x) (x)
#else
-#if defined(AFS_DARWIN_ENV)
-#if defined(AFS_DARWIN80_ENV)
-#define MyPidxx (proc_selfpid())
-#else
-#define MyPidxx (current_proc()->p_pid )
-#endif
-#else
-#if defined(AFS_FBSD_ENV)
-#define MyPidxx (curproc->p_pid )
-#else
-#define MyPidxx (u.u_procp->p_pid )
-#endif /* AFS_FBSD_ENV */
-#endif /* AFS_DARWIN_ENV */
-#endif /* AFS_LINUX20_ENV */
-#endif /* AFS_SGI64_ENV */
-#endif /* AFS_HPUX101_ENV */
-#endif /* AFS_AIX41_ENV */
-#endif
+typedef unsigned int afs_lock_tracker_t;
+# define MyPidxx (u.u_procp->p_pid )
+# define MyPidxx2Pid(x) (x)
#endif
/* all locks wait on excl_locked except for READ_LOCK, which waits on readers_reading */
unsigned short spare; /* not used now */
osi_timeval_t time_waiting; /* for statistics gathering */
#if defined(INSTRUMENT_LOCKS)
- /* the following are useful for debugging
+ /* the following are useful for debugging
** the field 'src_indicator' is updated only by ObtainLock() and
** only for writes/shared locks. Hence, it indictes where in the
** source code the shared/write lock was set.
*/
- unsigned int pid_last_reader; /* proceess id of last reader */
- unsigned int pid_writer; /* process id of writer, else 0 */
+ afs_lock_tracker_t pid_last_reader; /* proceess id of last reader */
+ afs_lock_tracker_t pid_writer; /* process id of writer, else 0 */
unsigned int src_indicator; /* third param to ObtainLock() */
#endif /* INSTRUMENT_LOCKS */
};
(lock)->pid_last_reader = MyPidxx; \
ENDMAC
+#define NBObtainReadLock(lock) \
+ (((lock)->excl_locked & WRITE_LOCK) ? EWOULDBLOCK : (((lock)->readers_reading++), ((lock)->pid_last_reader = MyPidxx), 0))
+
#define ObtainWriteLock(lock, src)\
BEGINMAC \
AFS_LOCK_TRACE(CM_TRACE_LOCKOBTAIN, lock, WRITE_LOCK);\
Afs_Lock_Obtain(lock, READ_LOCK); \
ENDMAC
+#define NBObtainReadLock(lock) \
+ (((lock)->excl_locked & WRITE_LOCK) ? EWOULDBLOCK : (((lock)->readers_reading++), 0))
+
#define ObtainWriteLock(lock, src)\
BEGINMAC \
AFS_LOCK_TRACE(CM_TRACE_LOCKOBTAIN, lock, WRITE_LOCK);\
git://git.openafs.org / openafs.git / blobdiff