event.c revision 364a82f7c25b62967678027043425201a5e5171a
/*
* Copyright (C) 1998, 1999, 2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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.
*/
/*
* Principal Author: Bob Halley
*/
#include <config.h>
#include <isc/assertions.h>
#include <isc/event.h>
#include <isc/mem.h>
#include <isc/util.h>
/***
*** Events.
***/
static void
destroy(isc_event_t *event) {
isc_mem_t *mctx = event->ev_destroy_arg;
isc_mem_put(mctx, event, event->ev_size);
}
isc_event_t *
isc_event_allocate(isc_mem_t *mctx, void *sender, isc_eventtype_t type,
isc_taskaction_t action, void *arg, size_t size)
{
isc_event_t *event;
if (size < sizeof (struct isc_event))
return (NULL);
if (action == NULL)
return (NULL);
event = isc_mem_get(mctx, size);
if (event == NULL)
return (NULL);
ISC_EVENT_INIT(event, size, 0, NULL, type, action, arg, sender,
destroy, mctx);
return (event);
}
void
isc_event_free(isc_event_t **eventp) {
isc_event_t *event;
REQUIRE(eventp != NULL);
event = *eventp;
REQUIRE(event != NULL);
if (event->ev_destroy != NULL)
(event->ev_destroy)(event);
*eventp = NULL;
}