libvirt/src/conf/node_device_event.c
Cole Robinson af36f8a641 Require a semicolon for VIR_ONCE_GLOBAL_INIT calls
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>). VIR_ONCE_GLOBAL_INIT is almost
exclusively called without an ending semicolon, but let's
standardize on using one like the other macros.

Add a dummy struct definition at the end of the macro, so
the compiler will require callers to add a semicolon.

Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
2019-02-03 17:46:29 -05:00

281 lines
8.9 KiB
C

/*
* node_device_event.c: node device event queue processing helpers
*
* Copyright (C) 2010-2014 Red Hat, Inc.
* Copyright (C) 2008 VirtualIron
* Copyright (C) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "node_device_event.h"
#include "object_event.h"
#include "object_event_private.h"
#include "datatypes.h"
#include "virlog.h"
VIR_LOG_INIT("conf.node_device_event");
struct _virNodeDeviceEvent {
virObjectEvent parent;
/* Unused attribute to allow for subclass creation */
bool dummy;
};
typedef struct _virNodeDeviceEvent virNodeDeviceEvent;
typedef virNodeDeviceEvent *virNodeDeviceEventPtr;
struct _virNodeDeviceEventLifecycle {
virNodeDeviceEvent parent;
int type;
int detail;
};
typedef struct _virNodeDeviceEventLifecycle virNodeDeviceEventLifecycle;
typedef virNodeDeviceEventLifecycle *virNodeDeviceEventLifecyclePtr;
struct _virNodeDeviceEventUpdate {
virNodeDeviceEvent parent;
bool dummy;
};
typedef struct _virNodeDeviceEventUpdate virNodeDeviceEventUpdate;
typedef virNodeDeviceEventUpdate *virNodeDeviceEventUpdatePtr;
static virClassPtr virNodeDeviceEventClass;
static virClassPtr virNodeDeviceEventLifecycleClass;
static virClassPtr virNodeDeviceEventUpdateClass;
static void virNodeDeviceEventDispose(void *obj);
static void virNodeDeviceEventLifecycleDispose(void *obj);
static void virNodeDeviceEventUpdateDispose(void *obj);
static int
virNodeDeviceEventsOnceInit(void)
{
if (!VIR_CLASS_NEW(virNodeDeviceEvent, virClassForObjectEvent()))
return -1;
if (!VIR_CLASS_NEW(virNodeDeviceEventLifecycle, virNodeDeviceEventClass))
return -1;
if (!VIR_CLASS_NEW(virNodeDeviceEventUpdate, virNodeDeviceEventClass))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virNodeDeviceEvents);
static void
virNodeDeviceEventDispose(void *obj)
{
virNodeDeviceEventPtr event = obj;
VIR_DEBUG("obj=%p", event);
}
static void
virNodeDeviceEventLifecycleDispose(void *obj)
{
virNodeDeviceEventLifecyclePtr event = obj;
VIR_DEBUG("obj=%p", event);
}
static void
virNodeDeviceEventUpdateDispose(void *obj)
{
virNodeDeviceEventUpdatePtr event = obj;
VIR_DEBUG("obj=%p", event);
}
static void
virNodeDeviceEventDispatchDefaultFunc(virConnectPtr conn,
virObjectEventPtr event,
virConnectObjectEventGenericCallback cb,
void *cbopaque)
{
virNodeDevicePtr dev = virGetNodeDevice(conn,
event->meta.name);
if (!dev)
return;
switch ((virNodeDeviceEventID)event->eventID) {
case VIR_NODE_DEVICE_EVENT_ID_LIFECYCLE:
{
virNodeDeviceEventLifecyclePtr nodeDeviceLifecycleEvent;
nodeDeviceLifecycleEvent = (virNodeDeviceEventLifecyclePtr)event;
((virConnectNodeDeviceEventLifecycleCallback)cb)(conn, dev,
nodeDeviceLifecycleEvent->type,
nodeDeviceLifecycleEvent->detail,
cbopaque);
goto cleanup;
}
case VIR_NODE_DEVICE_EVENT_ID_UPDATE:
{
((virConnectNodeDeviceEventGenericCallback)cb)(conn, dev,
cbopaque);
goto cleanup;
}
case VIR_NODE_DEVICE_EVENT_ID_LAST:
break;
}
VIR_WARN("Unexpected event ID %d", event->eventID);
cleanup:
virObjectUnref(dev);
}
/**
* virNodeDeviceEventStateRegisterID:
* @conn: connection to associate with callback
* @state: object event state
* @dev: node device to filter on or NULL for all node devices
* @eventID: ID of the event type to register for
* @cb: function to invoke when event occurs
* @opaque: data blob to pass to @callback
* @freecb: callback to free @opaque
* @callbackID: filled with callback ID
*
* Register the function @cb with connection @conn, from @state, for
* events of type @eventID, and return the registration handle in
* @callbackID.
*
* Returns: the number of callbacks now registered, or -1 on error
*/
int
virNodeDeviceEventStateRegisterID(virConnectPtr conn,
virObjectEventStatePtr state,
virNodeDevicePtr dev,
int eventID,
virConnectNodeDeviceEventGenericCallback cb,
void *opaque,
virFreeCallback freecb,
int *callbackID)
{
if (virNodeDeviceEventsInitialize() < 0)
return -1;
return virObjectEventStateRegisterID(conn, state, dev ? dev->name : NULL,
NULL, NULL,
virNodeDeviceEventClass, eventID,
VIR_OBJECT_EVENT_CALLBACK(cb),
opaque, freecb,
false, callbackID, false);
}
/**
* virNodeDeviceEventStateRegisterClient:
* @conn: connection to associate with callback
* @state: object event state
* @dev: node device to filter on or NULL for all node devices
* @eventID: ID of the event type to register for
* @cb: function to invoke when event occurs
* @opaque: data blob to pass to @callback
* @freecb: callback to free @opaque
* @callbackID: filled with callback ID
*
* Register the function @cb with connection @conn, from @state, for
* events of type @eventID, and return the registration handle in
* @callbackID. This version is intended for use on the client side
* of RPC.
*
* Returns: the number of callbacks now registered, or -1 on error
*/
int
virNodeDeviceEventStateRegisterClient(virConnectPtr conn,
virObjectEventStatePtr state,
virNodeDevicePtr dev,
int eventID,
virConnectNodeDeviceEventGenericCallback cb,
void *opaque,
virFreeCallback freecb,
int *callbackID)
{
if (virNodeDeviceEventsInitialize() < 0)
return -1;
return virObjectEventStateRegisterID(conn, state, dev ? dev->name : NULL,
NULL, NULL,
virNodeDeviceEventClass, eventID,
VIR_OBJECT_EVENT_CALLBACK(cb),
opaque, freecb,
false, callbackID, true);
}
/**
* virNodeDeviceEventLifecycleNew:
* @name: name of the node device object the event describes
* @type: type of lifecycle event
* @detail: more details about @type
*
* Create a new node device lifecycle event.
*/
virObjectEventPtr
virNodeDeviceEventLifecycleNew(const char *name,
int type,
int detail)
{
virNodeDeviceEventLifecyclePtr event;
if (virNodeDeviceEventsInitialize() < 0)
return NULL;
if (!(event = virObjectEventNew(virNodeDeviceEventLifecycleClass,
virNodeDeviceEventDispatchDefaultFunc,
VIR_NODE_DEVICE_EVENT_ID_LIFECYCLE,
0, name, NULL, name)))
return NULL;
event->type = type;
event->detail = detail;
return (virObjectEventPtr)event;
}
/**
* virNodeDeviceEventUpdateNew:
* @name: name of the node device object the event describes
*
* Create a new node device update event.
*/
virObjectEventPtr
virNodeDeviceEventUpdateNew(const char *name)
{
virNodeDeviceEventUpdatePtr event;
if (virNodeDeviceEventsInitialize() < 0)
return NULL;
if (!(event = virObjectEventNew(virNodeDeviceEventUpdateClass,
virNodeDeviceEventDispatchDefaultFunc,
VIR_NODE_DEVICE_EVENT_ID_UPDATE,
0, name, NULL, name)))
return NULL;
return (virObjectEventPtr)event;
}