mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-16 10:20:30 +00:00
88 lines
2.8 KiB
Groff
88 lines
2.8 KiB
Groff
.\" Copyright (c) 2003 Alexey Zelkin <phantom@FreeBSD.org>
|
|
.\" 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd February 13, 2003
|
|
.Dt PTHREAD_SWITCH_ADD_NP 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm pthread_switch_add_np ,
|
|
.Nm pthread_switch_delete_np
|
|
.Nd thread context switches debugging primitives
|
|
.Sh LIBRARY
|
|
.Lb libc_r
|
|
.Sh SYNOPSIS
|
|
.In pthread_np.h
|
|
.Ft int
|
|
.Fn pthread_switch_add_np "pthread_switch_routine_t routine"
|
|
.Ft int
|
|
.Fn pthread_switch_delete_np "pthread_switch_routine_t routine"
|
|
.Sh DESCRIPTION
|
|
An application is allowed to monitor the thread context switches inside
|
|
the threading library.
|
|
An application can install a routine that gets called every time a thread
|
|
(explicitly created by an application with the
|
|
.Xr pthread_create 3
|
|
function) gets the context switched.
|
|
The routine is passed the thread IDs of the threads that are
|
|
being switched in and out.
|
|
Installation and removal of these hooks may be done using the
|
|
.Fn pthread_switch_add_np
|
|
and
|
|
.Fn pthread_switch_delete_np
|
|
functions respectively.
|
|
.Sh RETURN VALUES
|
|
If successful,
|
|
these functions return 0.
|
|
Otherwise, an error number is returned to indicate the error.
|
|
.Sh ERRORS
|
|
The
|
|
.Fn pthread_switch_add_np
|
|
may fail if:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
.Dv NULL
|
|
pointer was passed in the
|
|
.Fa routine
|
|
argument.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Fn pthread_switch_delete_np
|
|
may fail if:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
The
|
|
.Fa routine
|
|
argument is different from the argument previously passed to the
|
|
.Fn pthread_switch_add_np
|
|
function.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr pthread_create 3
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Alexey Zelkin Aq phantom@FreeBSD.org .
|