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/* $FreeBSD$ */
/*
* Copyright (C) 2003 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* $Id: mutex_emul.c,v 1.2.4.1 2006/06/16 17:21:06 darrenr Exp $
*/
#include "ipf.h"
#define EMM_MAGIC 0x9d7adba3
void eMmutex_enter(mtx, file, line)
eMmutex_t *mtx;
char *file;
int line;
{
if (mtx->eMm_magic != EMM_MAGIC) {
fprintf(stderr, "%s:eMmutex_enter(%p): bad magic: %#x\n",
mtx->eMm_owner, mtx, mtx->eMm_magic);
abort();
}
if (mtx->eMm_held != 0) {
fprintf(stderr, "%s:eMmutex_enter(%p): already locked: %d\n",
mtx->eMm_owner, mtx, mtx->eMm_held);
abort();
}
mtx->eMm_held++;
mtx->eMm_heldin = file;
mtx->eMm_heldat = line;
}
void eMmutex_exit(mtx)
eMmutex_t *mtx;
{
if (mtx->eMm_magic != EMM_MAGIC) {
fprintf(stderr, "%s:eMmutex_exit(%p): bad magic: %#x\n",
mtx->eMm_owner, mtx, mtx->eMm_magic);
abort();
}
if (mtx->eMm_held != 1) {
fprintf(stderr, "%s:eMmutex_exit(%p): not locked: %d\n",
mtx->eMm_owner, mtx, mtx->eMm_held);
abort();
}
mtx->eMm_held--;
mtx->eMm_heldin = NULL;
mtx->eMm_heldat = 0;
}
void eMmutex_init(mtx, who)
eMmutex_t *mtx;
char *who;
{
if (mtx->eMm_magic == EMM_MAGIC) { /* safe bet ? */
fprintf(stderr,
"%s:eMmutex_init(%p): already initialised?: %#x\n",
mtx->eMm_owner, mtx, mtx->eMm_magic);
abort();
}
mtx->eMm_magic = EMM_MAGIC;
mtx->eMm_held = 0;
if (who != NULL)
mtx->eMm_owner = strdup(who);
else
mtx->eMm_owner = NULL;
}
void eMmutex_destroy(mtx)
eMmutex_t *mtx;
{
if (mtx->eMm_magic != EMM_MAGIC) {
fprintf(stderr, "%s:eMmutex_destroy(%p): bad magic: %#x\n",
mtx->eMm_owner, mtx, mtx->eMm_magic);
abort();
}
if (mtx->eMm_held != 0) {
fprintf(stderr, "%s:eMmutex_enter(%p): still locked: %d\n",
mtx->eMm_owner, mtx, mtx->eMm_held);
abort();
}
memset(mtx, 0xa5, sizeof(*mtx));
}
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