Return to adsp_Status.c CVS log

Up to [Apple Darwin 0.x] / kernel / bsd / netat

Annotation of kernel/bsd/netat/adsp_Status.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: 
        !            26: #include       <adsp_local.h>
        !            27: 
        !            28: /*
        !            29:  * calcSendFree
        !            30:  *
        !            31:  * INPUTS:
        !            32:  *             sp              ADSP Stream
        !            33:  * OUTPUTS:
        !            34:  *             # of bytes avail in local send queue
        !            35:  */
        !            36: int CalcSendQFree(sp)          /* (CCBPtr sp) */
        !            37:     CCBPtr sp;
        !            38: {
        !            39:     int bytes;
        !            40:     
        !            41:     bytes = calcSendQ(sp);
        !            42:     bytes = sp->sbuflen - bytes;
        !            43: 
        !            44:     if (bytes < 0)
        !            45:        return 0;
        !            46:     return bytes;
        !            47: }
        !            48: 
        !            49: calcSendQ(sp)
        !            50:     CCBPtr sp;
        !            51: {
        !            52:     register gbuf_t *mp;
        !            53:     int bytes = 0;
        !            54: 
        !            55:     if (sp->sData) {           /* There is data in buffer */
        !            56:        if (mp = sp->sbuf_mb) {
        !            57:            do {
        !            58:                bytes += gbuf_msgsize(mp);
        !            59:                mp = gbuf_next(mp);
        !            60:            } while (mp);
        !            61:        }
        !            62:        if (mp = sp->csbuf_mb)
        !            63:            bytes += gbuf_msgsize(mp);
        !            64:     }
        !            65:     return bytes;
        !            66: }
        !            67: 
        !            68: /*
        !            69:  * dspStatus
        !            70:  * 
        !            71:  * INPUTS:
        !            72:  *     --> ccbRefNum           refnum of connection end
        !            73:  *
        !            74:  * OUTPUTS:
        !            75:  *     <-- statusCCB           Pointer to the connection control block
        !            76:  *     <-- sendQPending        bytes waiting to be sent or acknowledged
        !            77:  *     <-- sendQFree           available buffer in bytes of send queue
        !            78:  *     <-- recvQPending        bytes waiting to be read from queue
        !            79:  *     <-- recvQFree           available buffer in bytes of receive queue
        !            80:  *
        !            81:  * ERRORS:
        !            82:  *     errRefNum               bad connection refnum
        !            83:  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        !            84: */
        !            85: int adspStatus(sp, pb) /* (DSPPBPtr pb) */
        !            86:     CCBPtr sp;
        !            87:     register struct adspcmd *pb;
        !            88: {
        !            89:     OSErr err;
        !            90:     short bytes;
        !            91:     int        s;
        !            92: 
        !            93:     if (sp == 0) {
        !            94:        pb->ioResult = errRefNum;
        !            95:        return EINVAL;
        !            96:     }
        !            97:        
        !            98:     pb->u.statusParams.ccbPtr  = (TPCCB)sp;
        !            99:     ATDISABLE(s, sp->lock);    
        !           100:        
        !           101:     /*
        !           102:      * pending bytes in send queue
        !           103:      */                
        !           104:     if (sp->sData) 
        !           105:        bytes = calcSendQ(sp);
        !           106:     else
        !           107:        bytes = 0;
        !           108:     pb->u.statusParams.sendQPending = bytes;
        !           109:        
        !           110:                                /* available buffer space in send queue */
        !           111:     pb->u.statusParams.sendQFree = CalcSendQFree(sp);
        !           112:        
        !           113:     /*
        !           114:      * pending bytes in recv queue
        !           115:      */                
        !           116:     if (sp->rData)
        !           117:        bytes = calcRecvQ(sp);
        !           118:     else
        !           119:        bytes = 0;
        !           120:     pb->u.statusParams.recvQPending = bytes;
        !           121:        
        !           122:                                /* available buffer space in receive queue */
        !           123:     pb->u.statusParams.recvQFree = CalcRecvWdw(sp);
        !           124: 
        !           125:     ATENABLE(s, sp->lock);     
        !           126:     pb->ioResult = 0;
        !           127:     adspioc_ack(0, pb->ioc, pb->gref);
        !           128:     return 0;
        !           129: 
        !           130: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.