1.\" Copyright (c) 2007 Joseph Koshy. All rights reserved. 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 12.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 13.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 16.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 19.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22.\" SUCH DAMAGE. 23.\" 24.Dd November 25, 2007 25.Dt PMC_GET_DRIVER_STATS 3 26.Os 27.Sh NAME 28.Nm pmc_get_driver_stats 29.Nd retrieve driver statistics 30.Sh LIBRARY 31.Lb libpmc 32.Sh SYNOPSIS 33.In pmc.h 34.Ft int 35.Fn pmc_get_driver_stats "struct pmc_driverstats *gms" 36.Sh DESCRIPTION 37The function 38.Fn pmc_get_driver_statistics 39retrieves a snapshot of the usage statistics maintained by 40.Xr hwpmc 4 41into the memory area pointed to by argument 42.Fa gms . 43.Pp 44The returned structure includes the following fields: 45.Bl -tag -width pmc_intr_bufferfull -offset indent -compact 46.It pm_intr_ignored 47The number of sampling interrupts ignored. 48.It pm_intr_processed 49The number of sampling interrupts processed. 50.It pm_intr_bufferfull 51The number of sampling interrupts dropped due to lack of space 52in the sample buffer. 53.It pm_syscalls 54The number of system calls into 55.Xr hwpmc 4 . 56.It pm_syscalls_errors 57The number of system calls into 58.Xr hwpmc 4 59that failed. 60.It pm_buffer_requests 61The number of log buffer requests so far. 62.It pm_buffer_requests_failed 63The number of log buffer requests that failed due to lack of buffers. 64.It pm_log_sweeps 65The number of sample buffer processing sweeps. 66.El 67.Sh RETURN VALUES 68.Rv -std 69.Sh SEE ALSO 70.Xr pmc 3 , 71.Xr hwpmc 4 72