Annotation of XNU/bsd/netiso/tp_meas.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*-
        !            23:  * Copyright (c) 1991, 1993
        !            24:  *     The Regents of the University of California.  All rights reserved.
        !            25:  *
        !            26:  * Redistribution and use in source and binary forms, with or without
        !            27:  * modification, are permitted provided that the following conditions
        !            28:  * are met:
        !            29:  * 1. Redistributions of source code must retain the above copyright
        !            30:  *    notice, this list of conditions and the following disclaimer.
        !            31:  * 2. Redistributions in binary form must reproduce the above copyright
        !            32:  *    notice, this list of conditions and the following disclaimer in the
        !            33:  *    documentation and/or other materials provided with the distribution.
        !            34:  * 3. All advertising materials mentioning features or use of this software
        !            35:  *    must display the following acknowledgement:
        !            36:  *     This product includes software developed by the University of
        !            37:  *     California, Berkeley and its contributors.
        !            38:  * 4. Neither the name of the University nor the names of its contributors
        !            39:  *    may be used to endorse or promote products derived from this software
        !            40:  *    without specific prior written permission.
        !            41:  *
        !            42:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            43:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            44:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            45:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            46:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            47:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            48:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            49:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            50:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            51:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            52:  * SUCH DAMAGE.
        !            53:  *
        !            54:  *     @(#)tp_meas.c   8.1 (Berkeley) 6/10/93
        !            55:  */
        !            56: 
        !            57: /***********************************************************
        !            58:                Copyright IBM Corporation 1987
        !            59: 
        !            60:                       All Rights Reserved
        !            61: 
        !            62: Permission to use, copy, modify, and distribute this software and its 
        !            63: documentation for any purpose and without fee is hereby granted, 
        !            64: provided that the above copyright notice appear in all copies and that
        !            65: both that copyright notice and this permission notice appear in 
        !            66: supporting documentation, and that the name of IBM not be
        !            67: used in advertising or publicity pertaining to distribution of the
        !            68: software without specific, written prior permission.  
        !            69: 
        !            70: IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            71: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            72: IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            73: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            74: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            75: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            76: SOFTWARE.
        !            77: 
        !            78: ******************************************************************/
        !            79: 
        !            80: /*
        !            81:  * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
        !            82:  */
        !            83: /*
        !            84:  * tp_meas.c : create a performance measurement event
        !            85:  * in the circular buffer tp_Meas[]
        !            86:  */
        !            87: 
        !            88: #include <sys/types.h>
        !            89: #include <sys/time.h>
        !            90: 
        !            91: #include <netiso/argo_debug.h>
        !            92: #include <netiso/tp_meas.h>
        !            93: 
        !            94: extern struct timeval time;
        !            95: 
        !            96: #ifdef TP_PERF_MEAS
        !            97: int            tp_Measn = 0;
        !            98: struct tp_Meas tp_Meas[TPMEASN];
        !            99: 
        !           100: /*
        !           101:  * NAME:        tpmeas()
        !           102:  *
        !           103:  * CALLED FROM: tp_emit(), tp_soisdisconecting(), tp_soisdisconnected()
        !           104:  *     tp0_stash(), tp_stash(), tp_send(), tp_goodack(), tp_usrreq()
        !           105:  *
        !           106:  * FUNCTION and ARGUMENTS:
        !           107:  *  stashes a performance-measurement event for the given reference (ref)
        !           108:  *  (kind) tells which kind of event, timev is the time to be stored
        !           109:  *  with this event, (seq), (win), and (size) are integers that usually
        !           110:  *  refer to the sequence number, window number (on send) and 
        !           111:  *  size of tpdu or window.
        !           112:  *
        !           113:  * RETURNS:            Nada
        !           114:  *
        !           115:  * SIDE EFFECTS:       
        !           116:  *
        !           117:  * NOTES:                      
        !           118:  */
        !           119: void
        !           120: Tpmeas(ref, kind, timev, seq, win, size)
        !           121:        u_int   ref;
        !           122:        u_int   kind;
        !           123:        struct  timeval *timev;
        !           124:        u_int   seq, win, size;
        !           125: {
        !           126:        register struct tp_Meas *tpm;
        !           127:        static int mseq;
        !           128: 
        !           129:        tpm = &tp_Meas[tp_Measn++];
        !           130:        tp_Measn %= TPMEASN;
        !           131: 
        !           132:        tpm->tpm_kind = kind;
        !           133:        tpm->tpm_tseq = mseq++;
        !           134:        tpm->tpm_ref = ref;
        !           135:        if(kind == TPtime_from_ll)
        !           136:                bcopy((caddr_t)timev, (caddr_t)&tpm->tpm_time, sizeof(struct timeval));
        !           137:        else
        !           138:                bcopy( (caddr_t)&time, 
        !           139:                        (caddr_t)&tpm->tpm_time, sizeof(struct timeval) );
        !           140:        tpm->tpm_seq = seq;
        !           141:        tpm->tpm_window = win;
        !           142:        tpm->tpm_size = size;
        !           143: }
        !           144: 
        !           145: #endif /* TP_PERF_MEAS */

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