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qio: introduce qio_channel_add_watch_{full|source}

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Firstly, introduce an internal qio_channel_add_watch_full(), which
enhances qio_channel_add_watch() that context can be specified.

Then add a new API wrapper qio_channel_add_watch_source() to return a
GSource pointer rather than a tag ID.

Note that the _source() call will keep a reference of GSource so that
callers need to unref them explicitly when finished using the GSource.

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Peter Xu 2018-03-05 14:43:20 +08:00 • committed by Daniel P. Berrangé
parent 7c28768fef
commit 315409c711
2 changed files with 78 additions and 6 deletions
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40
io/channel.c
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@ -299,11 +299,12 @@ void qio_channel_set_aio_fd_handler(QIOChannel *ioc,
klass->io_set_aio_fd_handler(ioc, ctx, io_read, io_write, opaque);
}
guint qio_channel_add_watch(QIOChannel *ioc,
GIOCondition condition,
QIOChannelFunc func,
gpointer user_data,
GDestroyNotify notify)
guint qio_channel_add_watch_full(QIOChannel *ioc,
GIOCondition condition,
QIOChannelFunc func,
gpointer user_data,
GDestroyNotify notify,
GMainContext *context)
{
GSource *source;
guint id;
@ -312,12 +313,39 @@ guint qio_channel_add_watch(QIOChannel *ioc,
g_source_set_callback(source, (GSourceFunc)func, user_data, notify);
id = g_source_attach(source, NULL);
id = g_source_attach(source, context);
g_source_unref(source);
return id;
}
guint qio_channel_add_watch(QIOChannel *ioc,
GIOCondition condition,
QIOChannelFunc func,
gpointer user_data,
GDestroyNotify notify)
{
return qio_channel_add_watch_full(ioc, condition, func,
user_data, notify, NULL);
}
GSource *qio_channel_add_watch_source(QIOChannel *ioc,
GIOCondition condition,
QIOChannelFunc func,
gpointer user_data,
GDestroyNotify notify,
GMainContext *context)
{
GSource *source;
guint id;
id = qio_channel_add_watch_full(ioc, condition, func,
user_data, notify, context);
source = g_main_context_find_source_by_id(context, id);
g_source_ref(source);
return source;
}
int qio_channel_shutdown(QIOChannel *ioc,
QIOChannelShutdown how,