| pthread_barrierattr.3 (126000) | pthread_barrierattr.3 (130643) |
|---|---|
| 1.\" Copyright (c) 2004 Michael Telahun Makonnen 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" | 1.\" Copyright (c) 2004 Michael Telahun Makonnen 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" |
| 25.\" $FreeBSD: head/share/man/man3/pthread_barrierattr.3 126000 2004-02-19 13:51:52Z mtm $ | 25.\" $FreeBSD: head/share/man/man3/pthread_barrierattr.3 130643 2004-06-17 17:51:17Z ru $ |
| 26.\" | 26.\" |
| 27.\" Note: The date here should be updated whenever a non-trivial 28.\" change is made to the manual page. | |
| 29.Dd February 19, 2004 | 27.Dd February 19, 2004 |
| 30.Dt PTHREAD_BARRIERATTR_DESTROY 3 PTHREAD_BARRIERATTR_GETPSHARED 3 PTHREAD_BARRIERATTR_INIT 3 PTHREAD_BARRIERATTR_SETPSHARED 3 | 28.Dt PTHREAD_BARRIERATTR 3 |
| 31.Os 32.Sh NAME | 29.Os 30.Sh NAME |
| 33.Nm pthread_barrierattr_destroy pthread_barrierattr_getpshared 34.Nm pthread_barrierattr_init pthread_barrierattr_setpshared | 31.Nm pthread_barrierattr_destroy , pthread_barrierattr_getpshared , 32.Nm pthread_barrierattr_init , pthread_barrierattr_setpshared |
| 35.Nd "manipulate a barrier attribute object" 36.Sh LIBRARY 37.Lb libpthread 38.Lb libthr 39.Sh SYNOPSIS 40.In pthread.h 41.Ft int 42.Fn pthread_barrierattr_destroy "pthread_barrierattr_t *attr" --- 21 unchanged lines hidden (view full) --- 64.Fa attr 65into the memory area pointed to by 66.Fa pshared . 67The 68.Fn pthread_barrierattr_setpshared 69function will set the process-shared attribute of 70.Fa attr 71to the value specified in | 33.Nd "manipulate a barrier attribute object" 34.Sh LIBRARY 35.Lb libpthread 36.Lb libthr 37.Sh SYNOPSIS 38.In pthread.h 39.Ft int 40.Fn pthread_barrierattr_destroy "pthread_barrierattr_t *attr" --- 21 unchanged lines hidden (view full) --- 62.Fa attr 63into the memory area pointed to by 64.Fa pshared . 65The 66.Fn pthread_barrierattr_setpshared 67function will set the process-shared attribute of 68.Fa attr 69to the value specified in |
| 72.Fa pshared. | 70.Fa pshared . |
| 73The argument 74.Fa pshared 75may have one of the following values: 76.Bl -tag -width ".Dv PTHREAD_PROCESS_PRIVATE" 77.It Dv PTHREAD_PROCESS_PRIVATE 78The barrier object it is attached to may only be accessed by 79threads in the same process as the one that created the object. 80.It Dv PTHREAD_PROCESS_SHARED 81The barrier object it is attached to may be accessed by 82threads in processes other than the one that created the object. 83.El | 71The argument 72.Fa pshared 73may have one of the following values: 74.Bl -tag -width ".Dv PTHREAD_PROCESS_PRIVATE" 75.It Dv PTHREAD_PROCESS_PRIVATE 76The barrier object it is attached to may only be accessed by 77threads in the same process as the one that created the object. 78.It Dv PTHREAD_PROCESS_SHARED 79The barrier object it is attached to may be accessed by 80threads in processes other than the one that created the object. 81.El |
| 84.Sh DIAGNOSTICS 85If successful all these functions will return zero. 86Otherwise an error number will be returned to indicate the error. | 82.Sh RETURN VALUES 83If successful, all these functions will return zero. 84Otherwise, an error number will be returned to indicate the error. |
| 87.Pp | 85.Pp |
| 88None of these functions will return EINTR. 89.Pp | 86None of these functions will return 87.Er EINTR . |
| 90.Sh ERRORS 91The 92.Fn pthread_barrierattr_destroy , 93.Fn pthread_barrierattr_getpshared 94and 95.Fn pthread_barrierattr_setpshared 96functions may fail if: 97.Bl -tag -width Er --- 19 unchanged lines hidden (view full) --- 117.It Bq Er EINVAL 118The value specified in 119.Fa pshared 120is not one of the allowed values. 121.El 122.Sh SEE ALSO 123.Xr pthread_barrier_destroy 3 , 124.Xr pthread_barrier_init 3 , | 88.Sh ERRORS 89The 90.Fn pthread_barrierattr_destroy , 91.Fn pthread_barrierattr_getpshared 92and 93.Fn pthread_barrierattr_setpshared 94functions may fail if: 95.Bl -tag -width Er --- 19 unchanged lines hidden (view full) --- 115.It Bq Er EINVAL 116The value specified in 117.Fa pshared 118is not one of the allowed values. 119.El 120.Sh SEE ALSO 121.Xr pthread_barrier_destroy 3 , 122.Xr pthread_barrier_init 3 , |
| 125.Xr pthread_barrier_wait 3 , | 123.Xr pthread_barrier_wait 3 |
| 126.Sh HISTORY 127The | 124.Sh HISTORY 125The |
| 128.Fn pthread_barrierattr | 126.Fn pthread_barrierattr_* |
| 129functions first appeared in 130.Lb libpthread 131in 132.Fx 5.2 , 133and in 134.Lb libthr 135in 136.Fx 5.3 . 137.Sh BUGS 138The implementation of | 127functions first appeared in 128.Lb libpthread 129in 130.Fx 5.2 , 131and in 132.Lb libthr 133in 134.Fx 5.3 . 135.Sh BUGS 136The implementation of |
| 139.Fn pthread_barriers | 137barriers |
| 140does not fully conform to 141.St -p1003.2 142because the process-shared attribute is ignored in 143.Lb libthr , 144and in | 138does not fully conform to 139.St -p1003.2 140because the process-shared attribute is ignored in 141.Lb libthr , 142and in |
| 145.Lb libpthread | 143.Lb libpthread ; |
| 146if any value other than 147.Dv PTHREAD_PROCESSES_PRIVATE 148is specified in a call to | 144if any value other than 145.Dv PTHREAD_PROCESSES_PRIVATE 146is specified in a call to |
| 149.Fn pthread_barrierattr_setpshared 150it will return EINVAL. | 147.Fn pthread_barrierattr_setpshared , 148it will return 149.Er EINVAL . |