9 files changed, 783 insertions, 0 deletions
diff --git a/share/man/man3/pthread_rwlock_destroy.3 b/share/man/man3/pthread_rwlock_destroy.3
new file mode 100644
index 0000000..7453274
--- /dev/null
+++ b/share/man/man3/pthread_rwlock_destroy.3
@@ -0,0 +1,80 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_DESTROY 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_destroy
+.Nd destroy a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_destroy "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_destroy
+function is used to destroy a read/write lock previously created with 
+.Fn pthread_rwlock_init .
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_destroy
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_destroy
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_destroy
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EPERM
+The caller does not have the privilege to perform the operation.
+.El
+.Pp
+The
+.Fn pthread_rwlock_destroy
+function may fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The system has detected an attempt to destroy the object referenced by
+.Fa lock
+while it is locked.
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_destroy
+function first appeared in
+.Fx 3.0 .
diff --git a/share/man/man3/pthread_rwlock_init.3 b/share/man/man3/pthread_rwlock_init.3
new file mode 100644
index 0000000..a561695
--- /dev/null
+++ b/share/man/man3/pthread_rwlock_init.3
@@ -0,0 +1,99 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_INIT 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_init
+.Nd initialize a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_init "pthread_rwlock_t *lock" "const pthread_rwlockattr_t *attr"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_init
+function is used to initialize a read/write lock, with attributes
+specified by
+.Fa attr .
+If
+.Fa attr
+is NULL, the default read/write lock attributes are used.
+.Pp
+The results of calling
+.Fn pthread_rwlock_init
+with an already initialized lock are undefined.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_init
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_destroy 3 ,
+.Xr pthread_rwlockattr_init 3 ,
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_init
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_init
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EAGAIN
+The system lacked the necessary resources (other than memory) to
+initialize the lock.
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the lock.
+.It Bq Er EPERM
+The caller does not have sufficient privilege to perform the
+operation.
+.El
+.Pp
+The
+.Fn pthread_rwlock_init
+function may fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The system has detected an attempt to re-initialize the object
+referenced by
+.Fa lock ,
+a previously initialized but not yet destroyed read/write lock.
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_init
+function first appeared in
+.Fx 3.0 .
+.Sh BUGS
+The PTHREAD_PROCESS_SHARED attribute is not supported.
diff --git a/share/man/man3/pthread_rwlock_rdlock.3 b/share/man/man3/pthread_rwlock_rdlock.3
new file mode 100644
index 0000000..9181be9
--- /dev/null
+++ b/share/man/man3/pthread_rwlock_rdlock.3
@@ -0,0 +1,122 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_RDLOCK 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_rdlock ,
+.Nm pthread_rwlock_tryrdlock
+.Nd acquire a read/write lock for reading
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_rdlock "pthread_rwlock_t *lock"
+.Ft int
+.Fn pthread_rwlock_tryrdlock "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_rdlock
+function acquires a read lock on
+.Fa lock
+provided that
+.Fa lock
+is not presently held for writing and no writer threads are
+presently blocked on the lock.  If the read lock cannot be
+immediately acquired, the calling thread blocks until it can
+acquire the lock.
+.Pp
+The
+.Fn pthread_rwlock_tryrdlock
+function performs the same action, but does not block if the lock
+cannot be immediately obtained (i.e. the lock is held for writing
+or there are waiting writers).
+.Pp
+A thread may hold multiple concurrent read locks.  If so,
+.Fn pthread_rwlock_unlock
+must be called once for each lock obtained.
+.Pp
+The results of acquiring a read lock while the calling thread holds
+a write lock are undefined.
+.Sh IMPLEMENTATION NOTES
+To prevent writer starvation, writers are favored over readers.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_rdlock
+and
+.Fn pthread_rwlock_tryrdlock
+functions will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlock_trywrlock 3 ,
+.Xr pthread_rwlock_unlock 3 ,
+.Xr pthread_rwlock_wrlock 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_rdlock
+and
+.Fn pthread_rwlock_tryrdlock
+functions are expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_tryrdlock
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The lock could not be acquired because a writer holds the lock or
+was blocked on it.
+.El
+.Pp
+The
+.Fn pthread_rwlock_rdlock
+and
+.Fn pthread_rwlock_tryrdlock
+functions may fail if:
+.Bl -tag -width Er
+.It Bq Er EAGAIN
+The lock could not be acquired because the maximum number of read locks
+against
+.Fa lock
+has been exceeded.
+.It Bq Er EDEADLK
+The current thread already owns
+.Fa lock
+for writing.
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the lock (applies to
+statically initialized locks only).
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_rdlock
+function first appeared in
+.Fx 3.0 .
diff --git a/share/man/man3/pthread_rwlock_unlock.3 b/share/man/man3/pthread_rwlock_unlock.3
new file mode 100644
index 0000000..1c9fd05
--- /dev/null
+++ b/share/man/man3/pthread_rwlock_unlock.3
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_UNLOCK 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_unlock
+.Nd release a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_unlock "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_unlock
+function is used to release the read/write lock previously obtained by
+.Fn pthread_rwlock_rdlock ,
+.Fn pthread_rwlock_wrlock ,
+.Fn pthread_rwlock_tryrdlock ,
+or
+.Fn pthread_rwlock_trywrlock .
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_unlock
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Pp
+The results are undefined if
+.Fa lock
+is not held by the calling thread.
+.Sh SEE ALSO
+.Xr pthread_rwlock_rdlock 3 ,
+.Xr pthread_rwlock_wrlock 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_unlock
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_unlock
+function may fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er EPERM
+The current thread does not own the read/write lock.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_unlock
+function first appeared in
+.Fx 3.0 .
diff --git a/share/man/man3/pthread_rwlock_wrlock.3 b/share/man/man3/pthread_rwlock_wrlock.3
new file mode 100644
index 0000000..a5a3674
--- /dev/null
+++ b/share/man/man3/pthread_rwlock_wrlock.3
@@ -0,0 +1,102 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_WRLOCK 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_wrlock ,
+.Nm pthread_rwlock_trywrlock
+.Nd acquire a read/write lock for writing
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_wrlock "pthread_rwlock_t *lock"
+.Ft int
+.Fn pthread_rwlock_trywrlock "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_wrlock
+function blocks until a write lock can be acquired against
+.Fa lock .
+The
+.Fn pthread_rwlock_trywrlock
+function performs the same action, but does not block if the lock
+cannot be immediately obtained.
+.Pp
+The results are undefined if the calling thread already holds the
+lock at the time the call is made.
+.Sh IMPLEMENTATION NOTES
+To prevent writer starvation, writers are favored over readers.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_wrlock
+and
+.Fn pthread_rwlock_trywrlock
+functions will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_trywrlock 3 ,
+.Xr pthread_rwlock_unlock 3 ,
+.Xr pthread_rwlock_wrlock 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_wrlock
+and
+.Fn pthread_rwlock_trywrlock
+functions are expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_trywrlock
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The calling thread is not able to acquire the lock without blocking.
+.El
+.Pp
+The
+.Fn pthread_rwlock_wrlock
+and
+.Fn pthread_rwlock_trywrlock
+functions may fail if:
+.Bl -tag -width Er
+.It Bq Er EDEADLK
+The calling thread already owns the read/write lock (for reading
+or writing).
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the lock (applies to
+statically initialized locks only).
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_wrlock
+function first appeared in
+.Fx 3.0 .
diff --git a/share/man/man3/pthread_rwlockattr_destroy.3 b/share/man/man3/pthread_rwlockattr_destroy.3
new file mode 100644
index 0000000..ee3c405
--- /dev/null
+++ b/share/man/man3/pthread_rwlockattr_destroy.3
@@ -0,0 +1,68 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_DESTROY 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_destroy
+.Nd destroy a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_destroy "pthread_rwlockattr_t *attr"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_destroy
+function is used to destroy a read/write lock attribute object
+previously created with 
+.Fn pthread_rwlockattr_init .
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_destroy
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlockattr_init 3 ,
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_destroy
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_destroy
+may fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_destroy
+function first appeared in
+.Fx 3.0 .
diff --git a/share/man/man3/pthread_rwlockattr_getpshared.3 b/share/man/man3/pthread_rwlockattr_getpshared.3
new file mode 100644
index 0000000..8e8160b
--- /dev/null
+++ b/share/man/man3/pthread_rwlockattr_getpshared.3
@@ -0,0 +1,80 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_GETPSHARED 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_getpshared
+.Nd set the process shared attribute
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_getpshared "pthread_rwlockattr_t *attr" "int *pshared"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_getpshared
+function is used to get the process shared setting of a read/write
+lock attribute object.  The setting is returned via
+.Fa pshared ,
+and may be one of two values:
+.Bl -hang -offset flag -width 123456789012345678901234
+.It Ar PTHREAD_PROCESS_SHARED
+Any thread of any process that has access to the memory where the
+read/write lock resides can manipulate the lock.
+.It Ar PTHREAD_PROCESS_PRIVATE
+Only threads created within the same process as the thread that
+initialized the read/write lock can manipulate the lock.  This is
+the default value.
+.El
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_getpshared
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlockattr_init 3 ,
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_getpshared
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_getpshared
+may fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_getpshared
+function first appeared in
+.Fx 3.0 .
diff --git a/share/man/man3/pthread_rwlockattr_init.3 b/share/man/man3/pthread_rwlockattr_init.3
new file mode 100644
index 0000000..8827121
--- /dev/null
+++ b/share/man/man3/pthread_rwlockattr_init.3
@@ -0,0 +1,67 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_INIT 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_init
+.Nd initialize a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_init "pthread_rwlockattr_t *attr"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_init
+function is used to initialize a read/write lock attributes object.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_init
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlockattr_destroy 3 ,
+.Xr pthread_rwlockattr_getpshared 3
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_init
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_init
+will fail if:
+.Bl -tag -width Er
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the attribute object.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_init
+function first appeared in
+.Fx 3.0 .
diff --git a/share/man/man3/pthread_rwlockattr_setpshared.3 b/share/man/man3/pthread_rwlockattr_setpshared.3
new file mode 100644
index 0000000..e63debf
--- /dev/null
+++ b/share/man/man3/pthread_rwlockattr_setpshared.3
@@ -0,0 +1,86 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id$
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_SETPSHARED 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_setpshared
+.Nd set the process shared attribute
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_setpshared "pthread_rwlockattr_t *attr" "int *pshared"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_setpshared
+function sets the process shared attribute of
+.Fa attr
+to the value referenced by
+.Fa pshared .
+.Fa pshared
+may be one of two values:
+.Bl -hang -offset flag -width 123456789012345678901234
+.It Ar PTHREAD_PROCESS_SHARED
+Any thread of any process that has access to the memory where the
+read/write lock resides can manipulate the lock.
+.It Ar PTHREAD_PROCESS_PRIVATE
+Only threads created within the same process as the thread that
+initialized the read/write lock can manipulate the lock.  This is
+the default value.
+.El
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_setpshared
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlockattr_init 3 ,
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_setpshared
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_setpshared
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+or
+.Fa pshared
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_setpshared
+function first appeared in
+.Fx 3.0 .
+.Sh BUGS
+The PTHREAD_PROCESS_SHARED attribute is not supported.