81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/* $NetBSD: mutex_emul.c,v 1.1.1.1 2004/03/28 08:56:19 martti Exp $ */
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#include "ipf.h"
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#define EMM_MAGIC 0x9d7adba3
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void eMmutex_enter(mtx, file, line)
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eMmutex_t *mtx;
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char *file;
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int line;
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{
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if (mtx->eMm_magic != EMM_MAGIC) {
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fprintf(stderr, "%s:eMmutex_enter(%p): bad magic: %#x\n",
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mtx->eMm_owner, mtx, mtx->eMm_magic);
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abort();
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}
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if (mtx->eMm_held != 0) {
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fprintf(stderr, "%s:eMmutex_enter(%p): already locked: %d\n",
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mtx->eMm_owner, mtx, mtx->eMm_held);
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abort();
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}
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mtx->eMm_held++;
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mtx->eMm_heldin = file;
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mtx->eMm_heldat = line;
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}
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void eMmutex_exit(mtx)
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eMmutex_t *mtx;
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{
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if (mtx->eMm_magic != EMM_MAGIC) {
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fprintf(stderr, "%s:eMmutex_exit(%p): bad magic: %#x\n",
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mtx->eMm_owner, mtx, mtx->eMm_magic);
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abort();
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}
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if (mtx->eMm_held != 1) {
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fprintf(stderr, "%s:eMmutex_exit(%p): not locked: %d\n",
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mtx->eMm_owner, mtx, mtx->eMm_held);
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abort();
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}
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mtx->eMm_held--;
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mtx->eMm_heldin = NULL;
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mtx->eMm_heldat = 0;
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}
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void eMmutex_init(mtx, who)
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eMmutex_t *mtx;
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char *who;
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{
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if (mtx->eMm_magic == EMM_MAGIC) { /* safe bet ? */
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fprintf(stderr,
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"%s:eMmutex_init(%p): already initialised?: %#x\n",
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mtx->eMm_owner, mtx, mtx->eMm_magic);
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abort();
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}
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mtx->eMm_magic = EMM_MAGIC;
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mtx->eMm_held = 0;
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if (who != NULL)
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mtx->eMm_owner = strdup(who);
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else
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mtx->eMm_owner = NULL;
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}
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void eMmutex_destroy(mtx)
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eMmutex_t *mtx;
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{
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if (mtx->eMm_magic != EMM_MAGIC) {
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fprintf(stderr, "%s:eMmutex_destroy(%p): bad magic: %#x\n",
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mtx->eMm_owner, mtx, mtx->eMm_magic);
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abort();
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}
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if (mtx->eMm_held != 0) {
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fprintf(stderr, "%s:eMmutex_enter(%p): still locked: %d\n",
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mtx->eMm_owner, mtx, mtx->eMm_held);
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abort();
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}
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memset(mtx, 0xa5, sizeof(*mtx));
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}
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