1 files changed, 85 insertions, 0 deletions
diff --git a/lib/isc/ondestroy.c b/lib/isc/ondestroy.c
new file mode 100644
index 0000000..32a75e1
--- /dev/null
+++ b/lib/isc/ondestroy.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: ondestroy.c,v 1.16 2007/06/19 23:47:17 tbox Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <stddef.h>
+
+#include <isc/event.h>
+#include <isc/magic.h>
+#include <isc/ondestroy.h>
+#include <isc/task.h>
+#include <isc/util.h>
+
+#define ONDESTROY_MAGIC		ISC_MAGIC('D', 'e', 'S', 't')
+#define VALID_ONDESTROY(s)	ISC_MAGIC_VALID(s, ONDESTROY_MAGIC)
+
+void
+isc_ondestroy_init(isc_ondestroy_t *ondest) {
+	ondest->magic = ONDESTROY_MAGIC;
+	ISC_LIST_INIT(ondest->events);
+}
+
+isc_result_t
+isc_ondestroy_register(isc_ondestroy_t *ondest, isc_task_t *task,
+		       isc_event_t **eventp)
+{
+	isc_event_t *theevent;
+	isc_task_t *thetask = NULL;
+
+	REQUIRE(VALID_ONDESTROY(ondest));
+	REQUIRE(task != NULL);
+	REQUIRE(eventp != NULL);
+
+	theevent = *eventp;
+
+	REQUIRE(theevent != NULL);
+
+	isc_task_attach(task, &thetask);
+
+	theevent->ev_sender = thetask;
+
+	ISC_LIST_APPEND(ondest->events, theevent, ev_link);
+
+	return (ISC_R_SUCCESS);
+}
+
+void
+isc_ondestroy_notify(isc_ondestroy_t *ondest, void *sender) {
+	isc_event_t *eventp;
+	isc_task_t *task;
+
+	REQUIRE(VALID_ONDESTROY(ondest));
+
+	eventp = ISC_LIST_HEAD(ondest->events);
+	while (eventp != NULL) {
+		ISC_LIST_UNLINK(ondest->events, eventp, ev_link);
+
+		task = eventp->ev_sender;
+		eventp->ev_sender = sender;
+
+		isc_task_sendanddetach(&task, &eventp);
+
+		eventp = ISC_LIST_HEAD(ondest->events);
+	}
+}
+
+