|
Packit |
a07778 |
/*
|
|
Packit |
a07778 |
* libvirt-glib-event.c: libvirt glib integration
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* Copyright (C) 2008 Daniel P. Berrange
|
|
Packit |
a07778 |
* Copyright (C) 2010-2011 Red Hat, Inc.
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* This library is free software; you can redistribute it and/or
|
|
Packit |
a07778 |
* modify it under the terms of the GNU Lesser General Public
|
|
Packit |
a07778 |
* License as published by the Free Software Foundation; either
|
|
Packit |
a07778 |
* version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* This library is distributed in the hope that it will be useful,
|
|
Packit |
a07778 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
a07778 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
a07778 |
* Lesser General Public License for more details.
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* You should have received a copy of the GNU Lesser General Public
|
|
Packit |
a07778 |
* License along with this library. If not, see
|
|
Packit |
a07778 |
* <http://www.gnu.org/licenses/>.
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* Author: Daniel P. Berrange <berrange@redhat.com>
|
|
Packit |
a07778 |
*/
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
#include <config.h>
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
#include <stdio.h>
|
|
Packit |
a07778 |
#include <string.h>
|
|
Packit |
a07778 |
#include <stdlib.h>
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
#include <libvirt/libvirt.h>
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
#include "libvirt-glib/libvirt-glib.h"
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
#ifdef G_OS_WIN32
|
|
Packit |
a07778 |
#include <io.h>
|
|
Packit |
a07778 |
#endif
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
/**
|
|
Packit |
a07778 |
* SECTION:libvirt-glib-event
|
|
Packit |
a07778 |
* @short_description: Integrate libvirt with the GMain event framework
|
|
Packit |
a07778 |
* @title: Event loop
|
|
Packit |
a07778 |
* @stability: Stable
|
|
Packit |
a07778 |
* @include: libvirt-glib/libvirt-glib.h
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* The libvirt API has the ability to provide applications with asynchronous
|
|
Packit |
a07778 |
* notifications of interesting events. To enable this functionality though,
|
|
Packit |
a07778 |
* applications must provide libvirt with an event loop implementation. The
|
|
Packit |
a07778 |
* libvirt-glib API provides such an implementation, which naturally integrates
|
|
Packit |
a07778 |
* with the GMain event loop framework.
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* To enable use of the GMain event loop glue, the gvir_event_register()
|
|
Packit |
a07778 |
* should be invoked. Once this is done, it is mandatory to have the default
|
|
Packit |
a07778 |
* GMain event loop run by a thread in the application, usually the primary
|
|
Packit |
a07778 |
* thread, eg by using gtk_main() or g_application_run()
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* <example>
|
|
Packit |
a07778 |
* <title>Registering for events with a GTK application</title>
|
|
Packit |
a07778 |
* <programlisting>
|
|
Packit |
a07778 |
* int main(int argc, char **argv) {
|
|
Packit |
a07778 |
* ...setup...
|
|
Packit |
a07778 |
* gvir_event_register();
|
|
Packit |
a07778 |
* ...more setup...
|
|
Packit |
a07778 |
* gtk_main();
|
|
Packit |
a07778 |
* return 0;
|
|
Packit |
a07778 |
* }
|
|
Packit |
a07778 |
* ]]></programlisting>
|
|
Packit |
a07778 |
* </example>
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* <example>
|
|
Packit |
a07778 |
* <title>Registering for events using Appplication</title>
|
|
Packit |
a07778 |
* <programlisting>
|
|
Packit |
a07778 |
* int main(int argc, char **argv) {
|
|
Packit |
a07778 |
* ...setup...
|
|
Packit |
a07778 |
* GApplication *app = ...create some impl of GApplication...
|
|
Packit |
a07778 |
* gvir_event_register();
|
|
Packit |
a07778 |
* ...more setup...
|
|
Packit |
a07778 |
* g_application_run(app);
|
|
Packit |
a07778 |
* return 0;
|
|
Packit |
a07778 |
* }
|
|
Packit |
a07778 |
* ]]></programlisting>
|
|
Packit |
a07778 |
* </example>
|
|
Packit |
a07778 |
*/
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
#if GLIB_CHECK_VERSION(2, 31, 0)
|
|
Packit |
a07778 |
#define g_mutex_new() g_new0(GMutex, 1)
|
|
Packit |
a07778 |
#endif
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
struct gvir_event_handle
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
int watch;
|
|
Packit |
a07778 |
int fd;
|
|
Packit |
a07778 |
int events;
|
|
Packit |
a07778 |
int removed;
|
|
Packit |
a07778 |
GIOChannel *channel;
|
|
Packit |
a07778 |
guint source;
|
|
Packit |
a07778 |
virEventHandleCallback cb;
|
|
Packit |
a07778 |
void *opaque;
|
|
Packit |
a07778 |
virFreeCallback ff;
|
|
Packit |
a07778 |
};
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
struct gvir_event_timeout
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
int timer;
|
|
Packit |
a07778 |
int interval;
|
|
Packit |
a07778 |
int removed;
|
|
Packit |
a07778 |
guint source;
|
|
Packit |
a07778 |
virEventTimeoutCallback cb;
|
|
Packit |
a07778 |
void *opaque;
|
|
Packit |
a07778 |
virFreeCallback ff;
|
|
Packit |
a07778 |
};
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static GMutex *eventlock = NULL;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static int nextwatch = 1;
|
|
Packit |
a07778 |
static GPtrArray *handles;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static int nexttimer = 1;
|
|
Packit |
a07778 |
static GPtrArray *timeouts;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static gboolean
|
|
Packit |
a07778 |
gvir_event_handle_dispatch(GIOChannel *source G_GNUC_UNUSED,
|
|
Packit |
a07778 |
GIOCondition condition,
|
|
Packit |
a07778 |
gpointer opaque)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_handle *data = opaque;
|
|
Packit |
a07778 |
int events = 0;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (condition & G_IO_IN)
|
|
Packit |
a07778 |
events |= VIR_EVENT_HANDLE_READABLE;
|
|
Packit |
a07778 |
if (condition & G_IO_OUT)
|
|
Packit |
a07778 |
events |= VIR_EVENT_HANDLE_WRITABLE;
|
|
Packit |
a07778 |
if (condition & G_IO_HUP)
|
|
Packit |
a07778 |
events |= VIR_EVENT_HANDLE_HANGUP;
|
|
Packit |
a07778 |
if (condition & G_IO_ERR)
|
|
Packit |
a07778 |
events |= VIR_EVENT_HANDLE_ERROR;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_debug("Dispatch handler %p %d %d %d %p\n", data, data->watch, data->fd, events, data->opaque);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
(data->cb)(data->watch, data->fd, events, data->opaque);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return TRUE;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static int
|
|
Packit |
a07778 |
gvir_event_handle_add(int fd,
|
|
Packit |
a07778 |
int events,
|
|
Packit |
a07778 |
virEventHandleCallback cb,
|
|
Packit |
a07778 |
void *opaque,
|
|
Packit |
a07778 |
virFreeCallback ff)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_handle *data;
|
|
Packit |
a07778 |
GIOCondition cond = 0;
|
|
Packit |
a07778 |
int ret;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data = g_new0(struct gvir_event_handle, 1);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (events & VIR_EVENT_HANDLE_READABLE)
|
|
Packit |
a07778 |
cond |= G_IO_IN;
|
|
Packit |
a07778 |
if (events & VIR_EVENT_HANDLE_WRITABLE)
|
|
Packit |
a07778 |
cond |= G_IO_OUT;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data->watch = nextwatch++;
|
|
Packit |
a07778 |
data->fd = fd;
|
|
Packit |
a07778 |
data->events = events;
|
|
Packit |
a07778 |
data->cb = cb;
|
|
Packit |
a07778 |
data->opaque = opaque;
|
|
Packit |
a07778 |
#ifdef G_OS_WIN32
|
|
Packit |
a07778 |
data->channel = g_io_channel_win32_new_socket(_get_osfhandle(fd));
|
|
Packit |
a07778 |
#else
|
|
Packit |
a07778 |
data->channel = g_io_channel_unix_new(fd);
|
|
Packit |
a07778 |
#endif
|
|
Packit |
a07778 |
data->ff = ff;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_debug("Add handle %p %d %d %d %p\n", data, data->watch, data->fd, events, data->opaque);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (events != 0) {
|
|
Packit |
a07778 |
data->source = g_io_add_watch(data->channel,
|
|
Packit |
a07778 |
cond,
|
|
Packit |
a07778 |
gvir_event_handle_dispatch,
|
|
Packit |
a07778 |
data);
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_ptr_array_add(handles, data);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
ret = data->watch;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return ret;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static struct gvir_event_handle *
|
|
Packit |
a07778 |
gvir_event_handle_find(int watch)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
guint i;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
for (i = 0 ; i < handles->len ; i++) {
|
|
Packit |
a07778 |
struct gvir_event_handle *h = g_ptr_array_index(handles, i);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (h == NULL) {
|
|
Packit |
a07778 |
g_warn_if_reached ();
|
|
Packit |
a07778 |
continue;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if ((h->watch == watch) && !h->removed) {
|
|
Packit |
a07778 |
return h;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return NULL;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static void
|
|
Packit |
a07778 |
gvir_event_handle_update(int watch,
|
|
Packit |
a07778 |
int events)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_handle *data;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data = gvir_event_handle_find(watch);
|
|
Packit |
a07778 |
if (!data) {
|
|
Packit |
a07778 |
g_debug("Update for missing handle watch %d", watch);
|
|
Packit |
a07778 |
goto cleanup;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_debug("Update handle %p %d %d %d\n", data, watch, data->fd, events);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (events) {
|
|
Packit |
a07778 |
GIOCondition cond = 0;
|
|
Packit |
a07778 |
if (events == data->events)
|
|
Packit |
a07778 |
goto cleanup;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (data->source)
|
|
Packit |
a07778 |
g_source_remove(data->source);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
cond |= G_IO_HUP;
|
|
Packit |
a07778 |
if (events & VIR_EVENT_HANDLE_READABLE)
|
|
Packit |
a07778 |
cond |= G_IO_IN;
|
|
Packit |
a07778 |
if (events & VIR_EVENT_HANDLE_WRITABLE)
|
|
Packit |
a07778 |
cond |= G_IO_OUT;
|
|
Packit |
a07778 |
data->source = g_io_add_watch(data->channel,
|
|
Packit |
a07778 |
cond,
|
|
Packit |
a07778 |
gvir_event_handle_dispatch,
|
|
Packit |
a07778 |
data);
|
|
Packit |
a07778 |
data->events = events;
|
|
Packit |
a07778 |
} else {
|
|
Packit |
a07778 |
if (!data->source)
|
|
Packit |
a07778 |
goto cleanup;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_source_remove(data->source);
|
|
Packit |
a07778 |
data->source = 0;
|
|
Packit |
a07778 |
data->events = 0;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
cleanup:
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static gboolean
|
|
Packit |
a07778 |
_event_handle_remove(gpointer data)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_handle *h = data;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (h->ff)
|
|
Packit |
a07778 |
(h->ff)(h->opaque);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
g_ptr_array_remove_fast(handles, h);
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return FALSE;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static int
|
|
Packit |
a07778 |
gvir_event_handle_remove(int watch)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_handle *data;
|
|
Packit |
a07778 |
int ret = -1;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data = gvir_event_handle_find(watch);
|
|
Packit |
a07778 |
if (!data) {
|
|
Packit |
a07778 |
g_debug("Remove of missing watch %d", watch);
|
|
Packit |
a07778 |
goto cleanup;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_debug("Remove handle %p %d %d\n", data, watch, data->fd);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (data->source != 0) {
|
|
Packit |
a07778 |
g_source_remove(data->source);
|
|
Packit |
a07778 |
data->source = 0;
|
|
Packit |
a07778 |
data->events = 0;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_warn_if_fail(data->channel != NULL);
|
|
Packit |
a07778 |
g_io_channel_unref(data->channel);
|
|
Packit |
a07778 |
data->channel = NULL;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
/* since the actual watch deletion is done asynchronously, a handle_update call may
|
|
Packit |
a07778 |
* reschedule the watch before it's fully deleted, that's why we need to mark it as
|
|
Packit |
a07778 |
* 'removed' to prevent reuse
|
|
Packit |
a07778 |
*/
|
|
Packit |
a07778 |
data->removed = TRUE;
|
|
Packit |
a07778 |
g_idle_add(_event_handle_remove, data);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
ret = 0;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
cleanup:
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
return ret;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static gboolean
|
|
Packit |
a07778 |
gvir_event_timeout_dispatch(void *opaque)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_timeout *data = opaque;
|
|
Packit |
a07778 |
g_debug("Dispatch timeout %p %p %d %p\n", data, data->cb, data->timer, data->opaque);
|
|
Packit |
a07778 |
(data->cb)(data->timer, data->opaque);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return TRUE;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static int
|
|
Packit |
a07778 |
gvir_event_timeout_add(int interval,
|
|
Packit |
a07778 |
virEventTimeoutCallback cb,
|
|
Packit |
a07778 |
void *opaque,
|
|
Packit |
a07778 |
virFreeCallback ff)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_timeout *data;
|
|
Packit |
a07778 |
int ret;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data = g_new0(struct gvir_event_timeout, 1);
|
|
Packit |
a07778 |
data->timer = nexttimer++;
|
|
Packit |
a07778 |
data->interval = interval;
|
|
Packit |
a07778 |
data->cb = cb;
|
|
Packit |
a07778 |
data->opaque = opaque;
|
|
Packit |
a07778 |
data->ff = ff;
|
|
Packit |
a07778 |
if (interval >= 0)
|
|
Packit |
a07778 |
data->source = g_timeout_add(interval,
|
|
Packit |
a07778 |
gvir_event_timeout_dispatch,
|
|
Packit |
a07778 |
data);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_ptr_array_add(timeouts, data);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_debug("Add timeout %p %d %p %p %d\n", data, interval, cb, opaque, data->timer);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
ret = data->timer;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return ret;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static struct gvir_event_timeout *
|
|
Packit |
a07778 |
gvir_event_timeout_find(int timer)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
guint i;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_return_val_if_fail(timeouts != NULL, NULL);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
for (i = 0 ; i < timeouts->len ; i++) {
|
|
Packit |
a07778 |
struct gvir_event_timeout *t = g_ptr_array_index(timeouts, i);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (t == NULL) {
|
|
Packit |
a07778 |
g_warn_if_reached ();
|
|
Packit |
a07778 |
continue;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if ((t->timer == timer) && !t->removed) {
|
|
Packit |
a07778 |
return t;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return NULL;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static void
|
|
Packit |
a07778 |
gvir_event_timeout_update(int timer,
|
|
Packit |
a07778 |
int interval)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_timeout *data;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data = gvir_event_timeout_find(timer);
|
|
Packit |
a07778 |
if (!data) {
|
|
Packit |
a07778 |
g_debug("Update of missing timer %d", timer);
|
|
Packit |
a07778 |
goto cleanup;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_debug("Update timeout %p %d %d\n", data, timer, interval);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (interval >= 0) {
|
|
Packit |
a07778 |
if (data->source)
|
|
Packit |
a07778 |
g_source_remove(data->source);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data->interval = interval;
|
|
Packit |
a07778 |
data->source = g_timeout_add(data->interval,
|
|
Packit |
a07778 |
gvir_event_timeout_dispatch,
|
|
Packit |
a07778 |
data);
|
|
Packit |
a07778 |
} else {
|
|
Packit |
a07778 |
if (!data->source)
|
|
Packit |
a07778 |
goto cleanup;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_source_remove(data->source);
|
|
Packit |
a07778 |
data->source = 0;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
cleanup:
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static gboolean
|
|
Packit |
a07778 |
_event_timeout_remove(gpointer data)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_timeout *t = data;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (t->ff)
|
|
Packit |
a07778 |
(t->ff)(t->opaque);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
g_ptr_array_remove_fast(timeouts, t);
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
return FALSE;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static int
|
|
Packit |
a07778 |
gvir_event_timeout_remove(int timer)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
struct gvir_event_timeout *data;
|
|
Packit |
a07778 |
int ret = -1;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_mutex_lock(eventlock);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
data = gvir_event_timeout_find(timer);
|
|
Packit |
a07778 |
if (!data) {
|
|
Packit |
a07778 |
g_debug("Remove of missing timer %d", timer);
|
|
Packit |
a07778 |
goto cleanup;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_debug("Remove timeout %p %d\n", data, timer);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
if (data->source != 0) {
|
|
Packit |
a07778 |
g_source_remove(data->source);
|
|
Packit |
a07778 |
data->source = 0;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
/* since the actual timeout deletion is done asynchronously, a timeout_update call may
|
|
Packit |
a07778 |
* reschedule the timeout before it's fully deleted, that's why we need to mark it as
|
|
Packit |
a07778 |
* 'removed' to prevent reuse
|
|
Packit |
a07778 |
*/
|
|
Packit |
a07778 |
data->removed = TRUE;
|
|
Packit |
a07778 |
g_idle_add(_event_timeout_remove, data);
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
ret = 0;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
cleanup:
|
|
Packit |
a07778 |
g_mutex_unlock(eventlock);
|
|
Packit |
a07778 |
return ret;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
static gpointer event_register_once(gpointer data G_GNUC_UNUSED)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
eventlock = g_mutex_new();
|
|
Packit |
a07778 |
timeouts = g_ptr_array_new_with_free_func(g_free);
|
|
Packit |
a07778 |
handles = g_ptr_array_new_with_free_func(g_free);
|
|
Packit |
a07778 |
virEventRegisterImpl(gvir_event_handle_add,
|
|
Packit |
a07778 |
gvir_event_handle_update,
|
|
Packit |
a07778 |
gvir_event_handle_remove,
|
|
Packit |
a07778 |
gvir_event_timeout_add,
|
|
Packit |
a07778 |
gvir_event_timeout_update,
|
|
Packit |
a07778 |
gvir_event_timeout_remove);
|
|
Packit |
a07778 |
return NULL;
|
|
Packit |
a07778 |
}
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
/**
|
|
Packit |
a07778 |
* gvir_event_register:
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* Registers a libvirt event loop implementation that is backed
|
|
Packit |
a07778 |
* by the default GMain context. If invoked more
|
|
Packit |
a07778 |
* than once this method will be a no-op. Applications should,
|
|
Packit |
a07778 |
* however, take care not to register any another non-GLib
|
|
Packit |
a07778 |
* event loop with libvirt.
|
|
Packit |
a07778 |
*
|
|
Packit |
a07778 |
* After invoking this method, it is mandatory to run the
|
|
Packit |
a07778 |
* default GMain event loop. Typically this can be satisfied
|
|
Packit |
a07778 |
* by invoking gtk_main or g_application_run
|
|
Packit |
a07778 |
* in the application's main thread. Failure to run the event
|
|
Packit |
a07778 |
* loop will mean no libvirt events get dispatched, and the
|
|
Packit |
a07778 |
* libvirt keepalive timer will kill off libvirt connections
|
|
Packit |
a07778 |
* frequently.
|
|
Packit |
a07778 |
*/
|
|
Packit |
a07778 |
void gvir_event_register(void)
|
|
Packit |
a07778 |
{
|
|
Packit |
a07778 |
static GOnce once = G_ONCE_INIT;
|
|
Packit |
a07778 |
|
|
Packit |
a07778 |
g_once(&once, event_register_once, NULL);
|
|
Packit |
a07778 |
}
|