author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:10:06 +0200 | |
branch | RCL_3 |
changeset 4 | 38249ef85f99 |
parent 0 | d0f3a028347a |
permissions | -rw-r--r-- |
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/** |
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* @file MsgQRecv.cpp |
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* Description: Source file for MsgQLib's MsgQReceive API |
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* Copyright (c) 2007 Nokia Corporation. |
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* All rights reserved. |
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* Redistribution and use in source and binary forms, with or without modification, |
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* are permitted provided that the following conditions are met: |
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* Redistributions of source code must retain the above copyright notice, this list |
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* of conditions and the following disclaimer.Redistributions in binary form must |
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* reproduce the above copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials provided with the distribution. |
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* Neither the name of the Nokia Corporation nor the names of its contributors may be used |
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* to endorse or promote products derived from this software without specific prior written |
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* permission. |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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* SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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* OF SUBSTITUTE GOODS 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 LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#include <errno.h> |
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#include <sys/msg.h> |
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#include <sys/sem.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <msgqinternal.h> |
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/******************************************************************************* |
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* MsgQReceive (qName, msg, maxNBytes, timeout, err) |
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* Description: Function for receiving a message with internal copy |
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********************************************************************************/ |
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EXPORT_C int MsgQReceive(ULONG qName, char* msg, ULONG maxNBytes, int timeout, int* err) { |
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ssize_t rxBytes; |
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int toTicks; |
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int qId; |
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struct { |
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long mtype; |
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char mtext[MAX_MSG_LEN]; |
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} message; |
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/* check parameters */ |
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if((qId = msgget((key_t) qName ,IPC_CREAT | 0666 /*| IPC_EXCL */ )) >=0 ) { |
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toTicks = timeout; |
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message.mtype = 1; |
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/* receive message */ |
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if((rxBytes = msgrcv(qId, &message, (size_t)maxNBytes, 1, toTicks)) != -1) { |
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message.mtext[rxBytes-4] = '\0'; |
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bcopy(message.mtext, msg, rxBytes); |
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*err = OK; |
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return ((ULONG)rxBytes); |
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} |
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else { |
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*err = errno; |
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} |
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} |
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else { |
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*err = KMsgQLibQIdErr; |
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} |
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return(ERROR); |
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} |
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