026dbd291e
Advantages: - Reduces the number of different license versions in the tree - Eliminates a typo - Removes some incorrect author attributions due to c/p - Removes c/p error potential for future pmc manpages Approved by: jkoshy, gnn, rpaulo, fabient (copyright holders) MFC after: 1 week
150 lines
4.2 KiB
Groff
150 lines
4.2 KiB
Groff
.\" Copyright (c) 2007 Joseph Koshy. 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 November 25, 2007
|
|
.Dt PMC_ATTACH 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm pmc_attach ,
|
|
.Nm pmc_detach
|
|
.Nd attaching and detaching process scope PMCs to target processes
|
|
.Sh LIBRARY
|
|
.Lb libpmc
|
|
.Sh SYNOPSIS
|
|
.In pmc.h
|
|
.Ft int
|
|
.Fn pmc_attach "pmc_id_t pmcid" "pid_t pid"
|
|
.Ft int
|
|
.Fn pmc_detach "pmc_id_t pmcid" "pid_t pid"
|
|
.Sh DESCRIPTION
|
|
These functions control the set of target processes tracked by a
|
|
process scope PMC.
|
|
.Pp
|
|
Function
|
|
.Fn pmc_attach
|
|
is used to attach a process scope PMC specified by argument
|
|
.Fa pmcid
|
|
to a target process specified by argument
|
|
.Fa pid .
|
|
Argument
|
|
.Fa pid
|
|
may be zero to denote the current process.
|
|
If the PMC was allocated with modifier
|
|
.Dv PMC_F_DESCENDANTS ,
|
|
the PMC will additionally attach to current and future descendents of
|
|
the specified target process.
|
|
The PMC should be in a quiescent state (i.e., not running).
|
|
.Pp
|
|
Function
|
|
.Fn pmc_detach
|
|
is used to detach a process scope PMC specified by argument
|
|
.Fa pmcid
|
|
from a process specified by argument
|
|
.Fa pid .
|
|
Argument
|
|
.Fa pid
|
|
may be zero to denote the current process.
|
|
.Sh RETURN VALUES
|
|
.Rv -std
|
|
.Sh ERRORS
|
|
A call to function
|
|
.Fn pmc_attach
|
|
may fail with the following errors:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EBUSY
|
|
Argument
|
|
.Fa pmcid
|
|
specified a PMC that was not in a quiescent state.
|
|
.It Bq Er EBUSY
|
|
The target process specified by function
|
|
.Fa pmc_attach
|
|
is being tracked by another process scope PMC that uses the same PMC
|
|
hardware resources.
|
|
.It Bq Er EEXIST
|
|
The target process is already being tracked by the specified PMC.
|
|
.It Bq Er EINVAL
|
|
Argument
|
|
.Fa pmcid
|
|
specified a PMC with system scope.
|
|
.It Bq Er EINVAL
|
|
Argument
|
|
.Fa pid
|
|
specified an illegal process id.
|
|
.It Bq Er EINVAL
|
|
The current process does not own a PMC with the handle specified in
|
|
argument
|
|
.Fa pmcid .
|
|
.It Bq Er EPERM
|
|
The caller lacked the privilege needed to attach PMCs to
|
|
the specified target process.
|
|
.It Bq Er EPERM
|
|
(i386 and amd64 architectures) The PMC specified by argument
|
|
.Fa pmcid
|
|
has been setup to allow the use of the RDPMC instruction for
|
|
self measurement.
|
|
.It Bq Er ESRCH
|
|
The current process does not own any PMCs.
|
|
.It Bq Er ESRCH
|
|
The process specified by argument
|
|
.Fa pid
|
|
did not exist.
|
|
.El
|
|
.Pp
|
|
A call to function
|
|
.Fn pmc_detach
|
|
may fail with the following errors:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
Argument
|
|
.Fa pmcid
|
|
specified a PMC with system scope.
|
|
.It Bq Er EINVAL
|
|
Argument
|
|
.Fa pid
|
|
specified an illegal process id.
|
|
.It Bq Er EINVAL
|
|
The current process does not own a PMC with the handle specified in
|
|
argument
|
|
.Fa pmcid .
|
|
.It Bq Er EINVAL
|
|
The specified PMC was not attached to the target process.
|
|
.It Bq Er ESRCH
|
|
The current process does not own any PMCs.
|
|
.It Bq Er ESRCH
|
|
The process specified by argument
|
|
.Fa pid
|
|
is not being monitored by
|
|
.Xr hwpmc 4 .
|
|
.It Bq Er ESRCH
|
|
The process specified by argument
|
|
.Fa pid
|
|
did not exist.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr pmc 3 ,
|
|
.Xr pmc_start 3 ,
|
|
.Xr pmc_stop 3 ,
|
|
.Xr hwpmc 4
|