de4337ab21
- struct timeval time is gone
time.tv_sec -> time_second
- struct timeval mono_time is gone
mono_time.tv_sec -> time_uptime
- access to time via
{get,}{micro,nano,bin}time()
get* versions are fast but less precise
- support NTP nanokernel implementation (NTP API 4)
- further reading:
Timecounter Paper: http://phk.freebsd.dk/pubs/timecounter.pdf
NTP Nanokernel: http://www.eecis.udel.edu/~mills/ntp/html/kern.html
120 lines
4.2 KiB
C
120 lines
4.2 KiB
C
/* $NetBSD: tp_meas.c,v 1.13 2006/06/07 22:34:04 kardel Exp $ */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tp_meas.c 8.1 (Berkeley) 6/10/93
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*/
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/***********************************************************
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Copyright IBM Corporation 1987
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of IBM not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/*
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* ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
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*/
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/*
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* tp_meas.c : create a performance measurement event
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* in the circular buffer tp_Meas[]
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: tp_meas.c,v 1.13 2006/06/07 22:34:04 kardel Exp $");
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#include <sys/types.h>
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#include <sys/time.h>
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#include <netiso/argo_debug.h>
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#include <netiso/tp_meas.h>
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#ifdef TP_PERF_MEAS
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int tp_Measn = 0;
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struct tp_Meas tp_Meas[TPMEASN];
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/*
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* NAME: tpmeas()
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*
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* CALLED FROM: tp_emit(), tp_soisdisconecting(), tp_soisdisconnected()
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* tp0_stash(), tp_stash(), tp_send(), tp_goodack(), tp_usrreq()
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*
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* FUNCTION and ARGUMENTS:
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* stashes a performance-measurement event for the given reference (ref)
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* (kind) tells which kind of event, timev is the time to be stored
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* with this event, (seq), (win), and (size) are integers that usually
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* refer to the sequence number, window number (on send) and
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* size of tpdu or window.
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*
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* RETURNS: Nada
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*
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* SIDE EFFECTS:
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*
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* NOTES:
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*/
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void
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Tpmeas(u_int ref, u_int kind, struct timeval *timev, u_int seq, u_int win,
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u_int size)
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{
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struct tp_Meas *tpm;
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static int mseq;
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tpm = &tp_Meas[tp_Measn++];
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tp_Measn %= TPMEASN;
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tpm->tpm_kind = kind;
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tpm->tpm_tseq = mseq++;
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tpm->tpm_ref = ref;
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if (kind == TPtime_from_ll)
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bcopy((caddr_t) timev, (caddr_t) & tpm->tpm_time, sizeof(struct timeval));
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else
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getmicrotime(& tpm->tpm_time);
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tpm->tpm_seq = seq;
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tpm->tpm_window = win;
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tpm->tpm_size = size;
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}
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#endif /* TP_PERF_MEAS */
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