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/*--------------------------------------------------------------------*/
/* S e m . c */
/* */
/* Part of BinkD project */
/* Semaphore support (OS/2) for bsy.c module */
/*--------------------------------------------------------------------*/
/*--------------------------------------------------------------------*/
/* Copyright (c) 1996 by Fydodor Ustinov */
/* FIDONet 2:5020/79 */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License as */
/* published by the Free Software Foundation; either version 2 of */
/* the License, or (at your option) any later version. See COPYING. */
/*--------------------------------------------------------------------*/
#include "../sys.h"
#include "../readcfg.h"
#include "../tools.h"
#define INCL_DOS
#include <os2.h>
#define hmtx (*(HMTX*)vpSem)
#define hevt (*(HEV*)vpSem)
/*--------------------------------------------------------------------*/
/* int InitSem(void *) */
/* */
/* Initialise Mutex Semaphore. */
/*--------------------------------------------------------------------*/
int _InitSem(void *vpSem) {
ULONG rc;
if ((rc = DosCreateMutexSem (0, &hmtx, 0, FALSE)) != 0) {
Log (0, "DosCreateMutexSem: error 0x%lx", rc);
return(-1);
}
return(0);
}
/*--------------------------------------------------------------------*/
/* int InitEventSem(void *) */
/* */
/* Initialise Event Semaphore. */
/*--------------------------------------------------------------------*/
int _InitEventSem(void *vpSem) {
ULONG rc;
if ((rc = DosCreateEventSem (NULL, &hevt, 0, FALSE)) != 0) {
Log (0, "DosCreateEventSem: error 0x%lx", rc);
return(-1);
}
return(0);
}
/*--------------------------------------------------------------------*/
/* int CleanSem(void *) */
/* */
/* Clean Mutex Semaphore. */
/*--------------------------------------------------------------------*/
int _CleanSem(void *vpSem) {
if (hmtx)
{ DosCloseMutexSem (hmtx);
hmtx = 0;
}
return (0);
}
/*--------------------------------------------------------------------*/
/* int LockSem(void *) */
/* */
/* Wait & lock semaphore */
/*--------------------------------------------------------------------*/
int _LockSem(void *vpSem) {
ULONG rc;
if (hmtx == 0) return (-1);
if ((rc = DosRequestMutexSem (hmtx, SEM_INDEFINITE_WAIT)) != 0) {
_CleanSem (vpSem);
Log (0, "DosRequestMutexSem retcode 0x%lx", rc);
}
return (0);
}
/*--------------------------------------------------------------------*/
/* int ReleaseSem(void *) */
/* */
/* Release Semaphore. */
/*--------------------------------------------------------------------*/
int _ReleaseSem(void *vpSem) {
if (hmtx == 0) return (-1);
DosReleaseMutexSem (hmtx);
return (0);
}
/*--------------------------------------------------------------------*/
/* int PostSem(void *) */
/* */
/* Post Event Semaphore. */
/*--------------------------------------------------------------------*/
int _PostSem(void *vpSem) {
if (hmtx == 0) return (-1);
DosPostEventSem (hevt);
return (0);
}
/*--------------------------------------------------------------------*/
/* int WaitSem(void *, int) */
/* */
/* Wait Event Semaphore. */
/*--------------------------------------------------------------------*/
int _WaitSem(void *vpSem, int timeout) {
ULONG semcount;
if (hmtx == 0) return (-1);
if (DosWaitEventSem (hevt, timeout * 1000ul))
return -1;
DosResetEventSem (hevt, &semcount);
return 0;
}
/*--------------------------------------------------------------------*/
/* int CleanEventSem(void *) */
/* */
/* Clean Semaphores. */
/*--------------------------------------------------------------------*/
int _CleanEventSem(void *vpSem) {
if (hevt)
{ DosCloseEventSem (hevt);
hevt = 0;
}
return 0;
}
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