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Annotation of Net2/netiso/tp_meas.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1991 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)tp_meas.c   7.4 (Berkeley) 5/6/91
        !            34:  */
        !            35: 
        !            36: /***********************************************************
        !            37:                Copyright IBM Corporation 1987
        !            38: 
        !            39:                       All Rights Reserved
        !            40: 
        !            41: Permission to use, copy, modify, and distribute this software and its 
        !            42: documentation for any purpose and without fee is hereby granted, 
        !            43: provided that the above copyright notice appear in all copies and that
        !            44: both that copyright notice and this permission notice appear in 
        !            45: supporting documentation, and that the name of IBM not be
        !            46: used in advertising or publicity pertaining to distribution of the
        !            47: software without specific, written prior permission.  
        !            48: 
        !            49: IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            50: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            51: IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            52: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            53: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            54: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            55: SOFTWARE.
        !            56: 
        !            57: ******************************************************************/
        !            58: 
        !            59: /*
        !            60:  * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
        !            61:  */
        !            62: /*
        !            63:  * $Header: tp_meas.c,v 5.2 88/11/18 17:28:04 nhall Exp $
        !            64:  * $Source: /usr/argo/sys/netiso/RCS/tp_meas.c,v $
        !            65:  * 
        !            66:  * tp_meas.c : create a performance measurement event
        !            67:  * in the circular buffer tp_Meas[]
        !            68:  */
        !            69: 
        !            70: #include "types.h"
        !            71: #include "time.h"
        !            72: #include "argo_debug.h"
        !            73: #include "tp_meas.h"
        !            74: 
        !            75: extern struct timeval time;
        !            76: 
        !            77: #ifdef TP_PERF_MEAS
        !            78: int            tp_Measn = 0;
        !            79: struct tp_Meas tp_Meas[TPMEASN];
        !            80: 
        !            81: /*
        !            82:  * NAME:        tpmeas()
        !            83:  *
        !            84:  * CALLED FROM: tp_emit(), tp_soisdisconecting(), tp_soisdisconnected()
        !            85:  *     tp0_stash(), tp_stash(), tp_send(), tp_goodack(), tp_usrreq()
        !            86:  *
        !            87:  * FUNCTION and ARGUMENTS:
        !            88:  *  stashes a performance-measurement event for the given reference (ref)
        !            89:  *  (kind) tells which kind of event, timev is the time to be stored
        !            90:  *  with this event, (seq), (win), and (size) are integers that usually
        !            91:  *  refer to the sequence number, window number (on send) and 
        !            92:  *  size of tpdu or window.
        !            93:  *
        !            94:  * RETURNS:            Nada
        !            95:  *
        !            96:  * SIDE EFFECTS:       
        !            97:  *
        !            98:  * NOTES:                      
        !            99:  */
        !           100: void
        !           101: Tpmeas(ref, kind, timev, seq, win, size)
        !           102:        u_int   ref;
        !           103:        u_int   kind;
        !           104:        struct  timeval *timev;
        !           105:        u_int   seq, win, size;
        !           106: {
        !           107:        register struct tp_Meas *tpm;
        !           108:        static int mseq;
        !           109: 
        !           110:        tpm = &tp_Meas[tp_Measn++];
        !           111:        tp_Measn %= TPMEASN;
        !           112: 
        !           113:        tpm->tpm_kind = kind;
        !           114:        tpm->tpm_tseq = mseq++;
        !           115:        tpm->tpm_ref = ref;
        !           116:        if(kind == TPtime_from_ll)
        !           117:                bcopy((caddr_t)timev, (caddr_t)&tpm->tpm_time, sizeof(struct timeval));
        !           118:        else
        !           119:                bcopy( (caddr_t)&time, 
        !           120:                        (caddr_t)&tpm->tpm_time, sizeof(struct timeval) );
        !           121:        tpm->tpm_seq = seq;
        !           122:        tpm->tpm_window = win;
        !           123:        tpm->tpm_size = size;
        !           124: }
        !           125: 
        !           126: #endif TP_PERF_MEAS

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