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 Joseph Koshy ``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 Joseph Koshy 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.\" $FreeBSD$ 25.\" 26.Dd November 25, 2007 27.Dt PMC_GET_DRIVER_STATS 3 28.Os 29.Sh NAME 30.Nm pmc_get_driver_stats 31.Nd retrieve driver statistics 32.Sh LIBRARY 33.Lb libpmc 34.Sh SYNOPSIS 35.In pmc.h 36.Ft int 37.Fn pmc_get_driver_stats "struct pmc_driverstats *gms" 38.Sh DESCRIPTION 39The function 40.Fn pmc_get_driver_statistics 41retrieves a snapshot of the usage statistics maintained by 42.Xr hwpmc 4 43into the memory area pointed to by argument 44.Fa gms . 45.Pp 46The returned structure includes the following fields: 47.Bl -tag -width pmc_intr_bufferfull -offset indent -compact 48.It pm_intr_ignored 49The number of sampling interrupts ignored. 50.It pm_intr_processed 51The number of sampling interrupts processed. 52.It pm_intr_bufferfull 53The number of sampling interrupts dropped due to lack of space 54in the sample buffer. 55.It pm_syscalls 56The number of system calls into 57.Xr hwpmc 4 . 58.It pm_syscalls_errors 59The number of system calls into 60.Xr hwpmc 4 61that failed. 62.It pm_buffer_requests 63The number of log buffer requests so far. 64.It pm_buffer_requests_failed 65The number of log buffer requests that failed due to lack of buffers. 66.It pm_log_sweeps 67The number of sample buffer processing sweeps. 68.El 69.Sh RETURN VALUES 70.Rv -std 71.Sh SEE ALSO 72.Xr pmc 3 , 73.Xr hwpmc 4 74