mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-06 17:18:32 +00:00
![Christian Brueffer](/assets/img/avatar_default.png)
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
134 lines
3.6 KiB
Groff
134 lines
3.6 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 24, 2007
|
|
.Dt PMC_CONFIGURE_LOGFILE 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm pmc_configure_logfile ,
|
|
.Nm pmc_flush_logfile ,
|
|
.Nm pmc_writelog ,
|
|
.Nm pmc_close_logfile
|
|
.Nd log file management
|
|
.Sh LIBRARY
|
|
.Lb libpmc
|
|
.Sh SYNOPSIS
|
|
.In pmc.h
|
|
.Ft int
|
|
.Fn pmc_configure_logfile "int fd"
|
|
.Ft int
|
|
.Fn pmc_flush_logfile void
|
|
.Ft int
|
|
.Fn pmc_writelog "uint32_t userdata"
|
|
.Ft int
|
|
.Fn pmc_close_logfile void
|
|
.Sh DESCRIPTION
|
|
The functions manage logging of
|
|
.Xr hwpmc 4
|
|
events.
|
|
.Pp
|
|
Function
|
|
.Fn pmc_configure_logfile
|
|
is used to turn on and turn off logging.
|
|
If argument
|
|
.Fa fd
|
|
is a valid file handle returned by a prior call to
|
|
.Xr open 2
|
|
or
|
|
.Xr socket 2
|
|
then performance events will be logged to the file corresponding
|
|
to the specified handle.
|
|
If the value of argument
|
|
.Fa fd
|
|
is -1 then logging will be stopped after any pending data is flushed.
|
|
.Pp
|
|
Function
|
|
.Fn pmc_flush_logfile
|
|
will force all log data queued inside the
|
|
.Xr hwpmc 4
|
|
driver to be written out.
|
|
.Pp
|
|
Function
|
|
.Fn pmc_writelog
|
|
will append a log entry containing the value of argument
|
|
.Fa userdata
|
|
to the log file.
|
|
.Pp
|
|
Function
|
|
.Fn pmc_close_logfile
|
|
will flush all pending log data and close
|
|
.Xr hwpmc 4 Ns Ap s
|
|
side of the stream.
|
|
.Sh RETURN VALUES
|
|
.Rv -std
|
|
.Sh ERRORS
|
|
A call to
|
|
.Fn pmc_configure_logfile
|
|
may fail with the following errors:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EAGAIN
|
|
The
|
|
.Xr hwpmc 4
|
|
driver was not able to create a helper process due to system limits
|
|
being reached.
|
|
.It Bq Er EBUSY
|
|
Function
|
|
.Fn pmc_configure_logfile
|
|
was called with a log file already configured.
|
|
.It Bq Er EINVAL
|
|
Function
|
|
.Fn pmc_configure_logfile
|
|
was called with an argument of -1 without a log file being previously
|
|
configured.
|
|
.It Bq Er ENOMEM
|
|
The system encountered a memory shortage when servicing this request.
|
|
.El
|
|
.Pp
|
|
A call to
|
|
.Fn pmc_flush_logfile
|
|
may fail with the following errors:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
Function
|
|
.Fn pmc_flush_logfile
|
|
was called without a log file being previously configured.
|
|
.El
|
|
.Pp
|
|
A call to
|
|
.Fn pmc_writelog
|
|
may fail with the following errors:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
Function
|
|
.Fn pmc_writelog
|
|
was called without a log file being previously configured.
|
|
.It Bq Er ENOMEM
|
|
The system encountered a memory shortage when servicing this
|
|
request.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr pmc 3 ,
|
|
.Xr hwpmc 4
|