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/*
* Reset handlers.
*
* Copyright (c) 2003-2008 Fabrice Bellard
* Copyright (c) 2016 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/queue.h"
#include "sysemu/reset.h"
/* reset/shutdown handler */
typedef struct QEMUResetEntry {
QTAILQ_ENTRY(QEMUResetEntry) entry;
QEMUResetHandler *func;
void *opaque;
bool skip_on_snapshot_load;
} QEMUResetEntry;
static QTAILQ_HEAD(, QEMUResetEntry) reset_handlers =
QTAILQ_HEAD_INITIALIZER(reset_handlers);
void qemu_register_reset(QEMUResetHandler *func, void *opaque)
{
QEMUResetEntry *re = g_new0(QEMUResetEntry, 1);
re->func = func;
re->opaque = opaque;
QTAILQ_INSERT_TAIL(&reset_handlers, re, entry);
}
void qemu_register_reset_nosnapshotload(QEMUResetHandler *func, void *opaque)
{
QEMUResetEntry *re = g_new0(QEMUResetEntry, 1);
re->func = func;
re->opaque = opaque;
re->skip_on_snapshot_load = true;
QTAILQ_INSERT_TAIL(&reset_handlers, re, entry);
}
void qemu_unregister_reset(QEMUResetHandler *func, void *opaque)
{
QEMUResetEntry *re;
QTAILQ_FOREACH(re, &reset_handlers, entry) {
if (re->func == func && re->opaque == opaque) {
QTAILQ_REMOVE(&reset_handlers, re, entry);
g_free(re);
return;
}
}
}
void qemu_devices_reset(ShutdownCause reason)
{
QEMUResetEntry *re, *nre;
/* reset all devices */
QTAILQ_FOREACH_SAFE(re, &reset_handlers, entry, nre) {
if (reason == SHUTDOWN_CAUSE_SNAPSHOT_LOAD &&
re->skip_on_snapshot_load) {
continue;
}
re->func(re->opaque);
}
}
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