4 * Copyright (C) 2003 by Darren Reed.
6 * See the IPFILTER.LICENCE file for details on licencing.
8 * $Id: mutex_emul.c,v 1.2.4.1 2006/06/16 17:21:06 darrenr Exp $
13 #define EMM_MAGIC 0x9d7adba3
15 void eMmutex_enter(mtx, file, line)
20 if (mtx->eMm_magic != EMM_MAGIC) {
21 fprintf(stderr, "%s:eMmutex_enter(%p): bad magic: %#x\n",
22 mtx->eMm_owner, mtx, mtx->eMm_magic);
25 if (mtx->eMm_held != 0) {
26 fprintf(stderr, "%s:eMmutex_enter(%p): already locked: %d\n",
27 mtx->eMm_owner, mtx, mtx->eMm_held);
31 mtx->eMm_heldin = file;
32 mtx->eMm_heldat = line;
36 void eMmutex_exit(mtx)
39 if (mtx->eMm_magic != EMM_MAGIC) {
40 fprintf(stderr, "%s:eMmutex_exit(%p): bad magic: %#x\n",
41 mtx->eMm_owner, mtx, mtx->eMm_magic);
44 if (mtx->eMm_held != 1) {
45 fprintf(stderr, "%s:eMmutex_exit(%p): not locked: %d\n",
46 mtx->eMm_owner, mtx, mtx->eMm_held);
50 mtx->eMm_heldin = NULL;
55 void eMmutex_init(mtx, who)
59 if (mtx->eMm_magic == EMM_MAGIC) { /* safe bet ? */
61 "%s:eMmutex_init(%p): already initialised?: %#x\n",
62 mtx->eMm_owner, mtx, mtx->eMm_magic);
65 mtx->eMm_magic = EMM_MAGIC;
68 mtx->eMm_owner = strdup(who);
70 mtx->eMm_owner = NULL;
74 void eMmutex_destroy(mtx)
77 if (mtx->eMm_magic != EMM_MAGIC) {
78 fprintf(stderr, "%s:eMmutex_destroy(%p): bad magic: %#x\n",
79 mtx->eMm_owner, mtx, mtx->eMm_magic);
82 if (mtx->eMm_held != 0) {
83 fprintf(stderr, "%s:eMmutex_enter(%p): still locked: %d\n",
84 mtx->eMm_owner, mtx, mtx->eMm_held);
87 memset(mtx, 0xa5, sizeof(*mtx));