[libvirt] [PATCH libvirt-glib 5/5] Convert GVirInputStream/GVirOutputStream over to use watches
Christophe Fergeau
cfergeau at redhat.com
Mon Nov 28 15:59:26 UTC 2011
On Mon, Nov 28, 2011 at 01:13:48PM +0000, Daniel P. Berrange wrote:
> From: "Daniel P. Berrange" <berrange at redhat.com>
>
> Since virStreamEventAddCallback only allows a single callback
> to be registered, GVirInputStream/GVirOutputStream should not
> use that directly. Instead they should use the gvir_stream_add_watch
> function
>
> * libvirt-gobject/libvirt-gobject-input-stream.c,
> libvirt-gobject/libvirt-gobject-output-stream.c: Convert to
> use gvir_stream_add_watch
> ---
> libvirt-gobject/libvirt-gobject-input-stream.c | 62 +++++++++++-----------
> libvirt-gobject/libvirt-gobject-output-stream.c | 62 +++++++++++-----------
> 2 files changed, 62 insertions(+), 62 deletions(-)
>
> diff --git a/libvirt-gobject/libvirt-gobject-input-stream.c b/libvirt-gobject/libvirt-gobject-input-stream.c
> index 06ea716..04ecb18 100644
> --- a/libvirt-gobject/libvirt-gobject-input-stream.c
> +++ b/libvirt-gobject/libvirt-gobject-input-stream.c
> @@ -99,30 +99,40 @@ static void gvir_input_stream_finalize(GObject *object)
> (*G_OBJECT_CLASS(gvir_input_stream_parent_class)->finalize)(object);
> }
>
> -static void
> -gvir_input_stream_read_ready(virStreamPtr st G_GNUC_UNUSED,
> - int events,
> +static gboolean
> +gvir_input_stream_read_ready(GVirStream *stream G_GNUC_UNUSED,
G_GNUC_UNUSED can be dropped since stream is used in the call to
gvir_stream_receive below.
Christophe
> + GVirStreamIOCondition cond,
> void *opaque)
> {
> - GVirInputStream *stream = GVIR_INPUT_STREAM(opaque);
> - GVirInputStreamPrivate *priv = stream->priv;
> - GSimpleAsyncResult *simple;
> + GVirInputStream *input_stream = GVIR_INPUT_STREAM(opaque);
> + GVirInputStreamPrivate *priv = input_stream->priv;
> + GSimpleAsyncResult *simple = priv->result;
> GError *error = NULL;
> gssize result;
>
> - g_return_if_fail(events & VIR_STREAM_EVENT_READABLE);
> + if (!(cond & GVIR_STREAM_IO_CONDITION_READABLE)) {
> + g_warn_if_reached();
> + g_simple_async_result_set_error(simple,
> + G_IO_ERROR,
> + G_IO_ERROR_INVALID_ARGUMENT,
> + "%s",
> + "Expected stream to be readable");
> + goto cleanup;
> + }
>
> - result = gvir_stream_receive(priv->stream, priv->buffer, priv->count,
> + result = gvir_stream_receive(stream, priv->buffer, priv->count,
> priv->cancellable, &error);
>
> if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
> g_warn_if_reached();
> - return;
> + g_simple_async_result_set_error(simple,
> + G_IO_ERROR,
> + G_IO_ERROR_INVALID_ARGUMENT,
> + "%s",
> + "Expected stream to be readable");
> + goto cleanup;
> }
>
> - simple = stream->priv->result;
> - stream->priv->result = NULL;
> -
> if (result >= 0)
> g_simple_async_result_set_op_res_gssize(simple, result);
>
> @@ -130,14 +140,15 @@ gvir_input_stream_read_ready(virStreamPtr st G_GNUC_UNUSED,
> g_simple_async_result_take_error(simple, error);
>
> if (priv->cancellable) {
> - g_object_unref(stream->priv->cancellable);
> + g_object_unref(priv->cancellable);
> priv->cancellable = NULL;
> }
>
> +cleanup:
> + priv->result = NULL;
> g_simple_async_result_complete(simple);
> g_object_unref(simple);
> -
> - return;
> + return FALSE;
> }
>
> static void gvir_input_stream_read_async(GInputStream *stream,
> @@ -149,23 +160,15 @@ static void gvir_input_stream_read_async(GInputStream *stream,
> gpointer user_data)
> {
> GVirInputStream *input_stream = GVIR_INPUT_STREAM(stream);
> - virStreamPtr handle;
>
> g_return_if_fail(GVIR_IS_INPUT_STREAM(stream));
> g_return_if_fail(input_stream->priv->result == NULL);
>
> - g_object_get(input_stream->priv->stream, "handle", &handle, NULL);
> -
> - if (virStreamEventAddCallback(handle, VIR_STREAM_EVENT_READABLE,
> - gvir_input_stream_read_ready, stream, NULL) < 0) {
> - g_simple_async_report_error_in_idle(G_OBJECT(stream),
> - callback,
> - user_data,
> - G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
> - "Couldn't add event callback %s",
> - G_STRFUNC);
> - goto end;
> - }
> + gvir_stream_add_watch(input_stream->priv->stream,
> + GVIR_STREAM_IO_CONDITION_READABLE,
> + gvir_input_stream_read_ready,
> + g_object_ref(stream),
> + (GDestroyNotify)g_object_unref);
>
> input_stream->priv->result =
> g_simple_async_result_new(G_OBJECT(stream), callback, user_data,
> @@ -175,9 +178,6 @@ static void gvir_input_stream_read_async(GInputStream *stream,
> input_stream->priv->cancellable = cancellable;
> input_stream->priv->buffer = buffer;
> input_stream->priv->count = count;
> -
> -end:
> - virStreamFree(handle);
> }
>
>
> diff --git a/libvirt-gobject/libvirt-gobject-output-stream.c b/libvirt-gobject/libvirt-gobject-output-stream.c
> index 74eddc5..39beb46 100644
> --- a/libvirt-gobject/libvirt-gobject-output-stream.c
> +++ b/libvirt-gobject/libvirt-gobject-output-stream.c
> @@ -99,30 +99,40 @@ static void gvir_output_stream_finalize(GObject *object)
> (*G_OBJECT_CLASS(gvir_output_stream_parent_class)->finalize)(object);
> }
>
> -static void
> -gvir_output_stream_write_ready(virStreamPtr st G_GNUC_UNUSED,
> - int events,
> +static gboolean
> +gvir_output_stream_write_ready(GVirStream *stream,
> + GVirStreamIOCondition cond,
> void *opaque)
> {
> - GVirOutputStream *stream = GVIR_OUTPUT_STREAM(opaque);
> - GVirOutputStreamPrivate *priv = stream->priv;
> - GSimpleAsyncResult *simple;
> + GVirOutputStream *output_stream = GVIR_OUTPUT_STREAM(opaque);
> + GVirOutputStreamPrivate *priv = output_stream->priv;
> + GSimpleAsyncResult *simple = priv->result;
> GError *error = NULL;
> gssize result;
>
> - g_return_if_fail(events & VIR_STREAM_EVENT_WRITABLE);
> + if (!(cond & GVIR_STREAM_IO_CONDITION_WRITABLE)) {
> + g_warn_if_reached();
> + g_simple_async_result_set_error(simple,
> + G_IO_ERROR,
> + G_IO_ERROR_INVALID_ARGUMENT,
> + "%s",
> + "Expected stream to be writable");
> + goto cleanup;
> + }
>
> - result = gvir_stream_send(priv->stream, priv->buffer, priv->count,
> + result = gvir_stream_send(stream, priv->buffer, priv->count,
> priv->cancellable, &error);
>
> if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
> g_warn_if_reached();
> - return;
> + g_simple_async_result_set_error(simple,
> + G_IO_ERROR,
> + G_IO_ERROR_INVALID_ARGUMENT,
> + "%s",
> + "Expected stream to be writable");
> + goto cleanup;
> }
>
> - simple = stream->priv->result;
> - stream->priv->result = NULL;
> -
> if (result >= 0)
> g_simple_async_result_set_op_res_gssize(simple, result);
>
> @@ -130,14 +140,15 @@ gvir_output_stream_write_ready(virStreamPtr st G_GNUC_UNUSED,
> g_simple_async_result_take_error(simple, error);
>
> if (priv->cancellable) {
> - g_object_unref(stream->priv->cancellable);
> + g_object_unref(priv->cancellable);
> priv->cancellable = NULL;
> }
>
> +cleanup:
> + priv->result = NULL;
> g_simple_async_result_complete(simple);
> g_object_unref(simple);
> -
> - return;
> + return FALSE;
> }
>
> static void gvir_output_stream_write_async(GOutputStream *stream,
> @@ -149,23 +160,15 @@ static void gvir_output_stream_write_async(GOutputStream *stream,
> gpointer user_data)
> {
> GVirOutputStream *output_stream = GVIR_OUTPUT_STREAM(stream);
> - virStreamPtr handle;
>
> g_return_if_fail(GVIR_IS_OUTPUT_STREAM(stream));
> g_return_if_fail(output_stream->priv->result == NULL);
>
> - g_object_get(output_stream->priv->stream, "handle", &handle, NULL);
> -
> - if (virStreamEventAddCallback(handle, VIR_STREAM_EVENT_WRITABLE,
> - gvir_output_stream_write_ready, stream, NULL) < 0) {
> - g_simple_async_report_error_in_idle(G_OBJECT(stream),
> - callback,
> - user_data,
> - G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
> - "Couldn't add event callback %s",
> - G_STRFUNC);
> - goto end;
> - }
> + gvir_stream_add_watch(output_stream->priv->stream,
> + GVIR_STREAM_IO_CONDITION_WRITABLE,
> + gvir_output_stream_write_ready,
> + g_object_ref(stream),
> + (GDestroyNotify)g_object_unref);
>
> output_stream->priv->result =
> g_simple_async_result_new(G_OBJECT(stream), callback, user_data,
> @@ -175,9 +178,6 @@ static void gvir_output_stream_write_async(GOutputStream *stream,
> output_stream->priv->cancellable = cancellable;
> output_stream->priv->buffer = buffer;
> output_stream->priv->count = count;
> -
> -end:
> - virStreamFree(handle);
> }
>
>
> --
> 1.7.6.4
>
> --
> libvir-list mailing list
> libvir-list at redhat.com
> https://www.redhat.com/mailman/listinfo/libvir-list
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: not available
URL: <http://listman.redhat.com/archives/libvir-list/attachments/20111128/b1b65f77/attachment-0001.sig>
More information about the libvir-list
mailing list