149 lines
4.8 KiB
C
Executable File
149 lines
4.8 KiB
C
Executable File
/******************************************************************************
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* Product: # # ###### ##### # ### ######
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* ## ## # # # # # # # #
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* # # # # # # # # # # #
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* # # # # # # # # ######
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* # # # # # # # # #
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* # # # # # # # # # #
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* # # ###### ##### ####### ####### ### ######
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*
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* File: mdc_common.c
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* Description: Meta Data Communications common functions shared between
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* the client and server API interfaces.
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*
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* Version: %I%
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* Dated: %D%
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* Copyright: P.D. Smart, 1996-2019.
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*
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* History: 1.0 - Initial Release.
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*
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******************************************************************************
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* This source file is free software: you can redistribute it and#or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This source file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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/* Bring in system header files.
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*/
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#if defined(SOLARIS)
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#include <thread.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <stdarg.h>
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#include <string.h>
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#include <ux.h>
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/* Indicate that we are a C module for any header specifics.
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*/
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#define MDC_COMMON_C
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/* Bring in local specific header files.
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*/
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#include "mdc.h"
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#include "mdc_common.h"
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/******************************************************************************
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* Function: _MDC_Init
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* Description: Function to perform MDC initialisation. The library performs
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* checking to ensure that initialisation only occurs once
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* prior to an _MDC_Terminate.
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*
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* Returns: MDC_FAIL- Couldnt initialise library.
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* MDC_OK - Library initialised.
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******************************************************************************/
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int _MDC_Init( void )
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{
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/* Local variables.
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*/
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static int nInitialised = FALSE;
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int nReturn;
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UCHAR *szFunc = "_MDC_Init";
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/* If this is the first invocation, setup the global state flag to
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* a known value.
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*/
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if(nInitialised == FALSE)
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{
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nInitialised = TRUE;
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MDC.nInitialised = FALSE;
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MDC.nMDCCommsMode = FALSE;
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MDC.spChanDetHead = NULL;
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MDC.spChanDetTail = NULL;
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}
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/* Have we been initialised already..? If we have, just get out.
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*/
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if( MDC.nInitialised == FALSE )
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{
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/* Initialise all so-called globals.
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*/
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MDC.spIFifoHead = NULL;
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MDC.spIFifoTail = NULL;
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MDC.spOFifoHead = NULL;
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MDC.spOFifoTail = NULL;
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MDC.nClientChanId = 0;
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MDC.nCloseDown = FALSE;
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MDC.nInitialised = TRUE;
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MDC.nNewSrvTimeout = DEF_NEW_SERVICE_TIMEOUT;
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MDC.nSrvReqTimeout = DEF_SRV_REQ_TIMEOUT;
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MDC.nSndReqTimeout = DEF_SEND_REQ_TIMEOUT;
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#if defined(SOLARIS)
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/* MDC.thMDCLock = DEFAULTMUTEX; */
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#endif
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/* Initialise UX comms
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*/
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if ((nReturn = SL_Init(MDC_SRV_KEEPALIVE, (UCHAR *) NULL)) != R_OK)
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{
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Lgr(LOG_DEBUG, szFunc, "SL_Init failed");
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return(MDC_FAIL);
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}
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}
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/* Return result to caller.
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*/
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return(MDC_OK);
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}
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/******************************************************************************
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* Function: _MDC_Terminate
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* Description: Function to shutdown the MDC library. After a successful
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* shutdown, _MDC_Init may be called to re-initialise the
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* library. If MDC_Terminate fails, program exit is advised.
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*
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* Returns: MDC_FAIL- Couldnt perform a clean shutdown.
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* MDC_OK - Library successfully shutdown.
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******************************************************************************/
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int _MDC_Terminate( void )
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{
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/* Local variables.
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*/
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/* Free up all resources that weve used to return us to a virgin state.
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*/
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/* Give the UX library a slice of CPU so that it can tidy up.
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*/
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SL_Poll(MAX_TERMINATE_TIME);
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/* Reset the initialisation flag so that user code can re-initialise us.
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*/
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MDC.nInitialised = FALSE;
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/* Return result to caller.
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*/
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return(MDC_OK);
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}
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