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Add GCancellables to GSocket ops

Browse Source 
Currently, to implement cancellability correctly, all synchronous
calls to GSocket must be preceded by a g_socket_condition_wait() call,
(even though GSocket does this internally as well) and all
asynchronous calls must do occasional manual
g_cancellable_is_cancelled() checks. Since it's trivial to do these
checks inside GSocket instead, and we don't particularly want to
encourage people to use the APIs non-cancellably, move the
cancellation support into GSocket and simplify the existing callers.

http://bugzilla.gnome.org/show_bug.cgi?id=586797
This commit is contained in:
Dan Winship 2009-06-23 17:42:01 -04:00
parent fc2b3ee560
commit 53beca955e
10 changed files with 119 additions and 109 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
gio/gsocket.c
View File

@ -1332,6 +1332,7 @@ g_socket_speaks_ipv4 (GSocket *socket)
/**
* g_socket_accept:
* @socket: a #GSocket.
* @cancellable: a %GCancellable or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Accept incoming connections on a connection-based socket. This removes
@ -1352,6 +1353,7 @@ g_socket_speaks_ipv4 (GSocket *socket)
*/
GSocket *
g_socket_accept (GSocket *socket,
GCancellable *cancellable,
GError **error)
{
GSocket *new_socket;
@ -1366,7 +1368,7 @@ g_socket_accept (GSocket *socket,
{
if (socket->priv->blocking &&
!g_socket_condition_wait (socket,
G_IO_IN, NULL, error))
G_IO_IN, cancellable, error))
return NULL;
if ((ret = accept (socket->priv->fd, NULL, 0)) < 0)
@ -1442,6 +1444,7 @@ g_socket_accept (GSocket *socket,
* g_socket_connect:
* @socket: a #GSocket.
* @address: a #GSocketAddress specifying the remote address.
* @cancellable: a %GCancellable or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Connect the socket to the specified remote address.
@ -1468,6 +1471,7 @@ g_socket_accept (GSocket *socket,
gboolean
g_socket_connect (GSocket *socket,
GSocketAddress *address,
GCancellable *cancellable,
GError **error)
{
struct sockaddr_storage buffer;
@ -1498,11 +1502,12 @@ g_socket_connect (GSocket *socket,
{
if (socket->priv->blocking)
{
g_socket_condition_wait (socket, G_IO_OUT, NULL, NULL);
if (g_socket_check_connect_result (socket, error))
break;
else
g_prefix_error (error, _("Error connecting: "));
if (g_socket_condition_wait (socket, G_IO_OUT, cancellable, error))
{
if (g_socket_check_connect_result (socket, error))
break;
}
g_prefix_error (error, _("Error connecting: "));
}
else
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_PENDING,
@ -1570,6 +1575,7 @@ g_socket_check_connect_result (GSocket *socket,
* @buffer: a buffer to read data into (which should be at least @size
* bytes long).
* @size: the number of bytes you want to read from the socket
* @cancellable: a %GCancellable or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Receive data (up to @size bytes) from a socket. This is mainly used by
@ -1600,10 +1606,11 @@ g_socket_check_connect_result (GSocket *socket,
* Since: 2.22
*/
gssize
g_socket_receive (GSocket *socket,
gchar *buffer,
gsize size,
GError **error)
g_socket_receive (GSocket *socket,
gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error)
{
gssize ret;
@ -1612,11 +1619,14 @@ g_socket_receive (GSocket *socket,
if (!check_socket (socket, error))
return -1;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return -1;
while (1)
{
if (socket->priv->blocking &&
!g_socket_condition_wait (socket,
G_IO_IN, NULL, error))
G_IO_IN, cancellable, error))
return -1;
if ((ret = recv (socket->priv->fd, buffer, size, 0)) < 0)
@ -1661,6 +1671,7 @@ g_socket_receive (GSocket *socket,
* @buffer: a buffer to read data into (which should be at least @size
* bytes long).
* @size: the number of bytes you want to read from the socket
* @cancellable: a %GCancellable or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Receive data (up to @size bytes) from a socket.
@ -1680,6 +1691,7 @@ g_socket_receive_from (GSocket *socket,
GSocketAddress **address,
gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error)
{
GInputVector v;
@ -1691,6 +1703,7 @@ g_socket_receive_from (GSocket *socket,
address,
&v, 1,
NULL, 0, NULL,
cancellable,
error);
}
@ -1699,6 +1712,7 @@ g_socket_receive_from (GSocket *socket,
* @socket: a #GSocket
* @buffer: the buffer containing the data to send.
* @size: the number of bytes to send
* @cancellable: a %GCancellable or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Tries to send @size bytes from @buffer on the socket. This is
@ -1722,10 +1736,11 @@ g_socket_receive_from (GSocket *socket,
* Since: 2.22
*/
gssize
g_socket_send (GSocket *socket,
const gchar *buffer,
gsize size,
GError **error)
g_socket_send (GSocket *socket,
const gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error)
{
gssize ret;
@ -1734,11 +1749,14 @@ g_socket_send (GSocket *socket,
if (!check_socket (socket, error))
return -1;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return -1;
while (1)
{
if (socket->priv->blocking &&
!g_socket_condition_wait (socket,
G_IO_OUT, NULL, error))
G_IO_OUT, cancellable, error))
return -1;
if ((ret = send (socket->priv->fd, buffer, size, 0)) < 0)
@ -1782,6 +1800,7 @@ g_socket_send (GSocket *socket,
* @address: a #GSocketAddress, or %NULL
* @buffer: the buffer containing the data to send.
* @size: the number of bytes to send
* @cancellable: a %GCancellable or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Tries to send @size bytes from @buffer to @address. If @address is
@ -1800,6 +1819,7 @@ g_socket_send_to (GSocket *socket,
GSocketAddress *address,
const gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error)
{
GOutputVector v;
@ -1811,7 +1831,9 @@ g_socket_send_to (GSocket *socket,
address,
&v, 1,
NULL, 0,
0, error);
0,
cancellable,
error);
}
/**
@ -2491,6 +2513,7 @@ g_socket_condition_wait (GSocket *socket,
* %NULL.
* @num_messages: number of elements in @messages, or -1.
* @flags: an int containing #GSocketMsgFlags flags
* @cancellable: a %GCancellable or %NULL
* @error: #GError for error reporting, or %NULL to ignore.
*
* Send data to @address on @socket. This is the most complicated and
@ -2544,6 +2567,7 @@ g_socket_send_message (GSocket *socket,
GSocketControlMessage **messages,
gint num_messages,
gint flags,
GCancellable *cancellable,
GError **error)
{
GOutputVector one_vector;
@ -2552,6 +2576,9 @@ g_socket_send_message (GSocket *socket,
if (!check_socket (socket, error))
return -1;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return -1;
if (num_vectors == -1)
{
for (num_vectors = 0;
@ -2650,7 +2677,7 @@ g_socket_send_message (GSocket *socket,
{
if (socket->priv->blocking &&
!g_socket_condition_wait (socket,
G_IO_OUT, NULL, error))
G_IO_OUT, cancellable, error))
return -1;
result = sendmsg (socket->priv->fd, &msg, flags);
@ -2718,7 +2745,7 @@ g_socket_send_message (GSocket *socket,
{
if (socket->priv->blocking &&
!g_socket_condition_wait (socket,
G_IO_OUT, NULL, error))
G_IO_OUT, cancellable, error))
return -1;
if (address)
@ -2772,6 +2799,7 @@ g_socket_send_message (GSocket *socket,
* @num_messages: a pointer which will be filled with the number of
* elements in @messages, or %NULL
* @flags: a pointer to an int containing #GSocketMsgFlags flags
* @cancellable: a %GCancellable or %NULL
* @error: a #GError pointer, or %NULL
*
* Receive data from a socket. This is the most complicated and
@ -2842,6 +2870,7 @@ g_socket_receive_message (GSocket *socket,
GSocketControlMessage ***messages,
gint *num_messages,
gint *flags,
GCancellable *cancellable,
GError **error)
{
GInputVector one_vector;
@ -2850,6 +2879,9 @@ g_socket_receive_message (GSocket *socket,
if (!check_socket (socket, error))
return -1;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return -1;
if (num_vectors == -1)
{
for (num_vectors = 0;
@ -2927,7 +2959,7 @@ g_socket_receive_message (GSocket *socket,
{
if (socket->priv->blocking &&
!g_socket_condition_wait (socket,
G_IO_IN, NULL, error))
G_IO_IN, cancellable, error))
return -1;
result = recvmsg (socket->priv->fd, &msg, msg.msg_flags);
@ -3055,7 +3087,7 @@ g_socket_receive_message (GSocket *socket,
{
if (socket->priv->blocking &&
!g_socket_condition_wait (socket,
G_IO_IN, NULL, error))
G_IO_IN, cancellable, error))
return -1;
addrlen = sizeof addr;

8
gio/gsocket.h
View File

@ -104,6 +104,7 @@ gboolean g_socket_bind (GSocket
GError **error);
gboolean g_socket_connect (GSocket *socket,
GSocketAddress *address,
GCancellable *cancellable,
GError **error);
gboolean g_socket_check_connect_result (GSocket *socket,
GError **error);
@ -114,26 +115,31 @@ gboolean g_socket_condition_wait (GSocket
GCancellable *cancellable,
GError **error);
GSocket * g_socket_accept (GSocket *socket,
GCancellable *cancellable,
GError **error);
gboolean g_socket_listen (GSocket *socket,
GError **error);
gssize g_socket_receive (GSocket *socket,
gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error);
gssize g_socket_receive_from (GSocket *socket,
GSocketAddress **address,
gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error);
gssize g_socket_send (GSocket *socket,
const gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error);
gssize g_socket_send_to (GSocket *socket,
GSocketAddress *address,
const gchar *buffer,
gsize size,
GCancellable *cancellable,
GError **error);
gssize g_socket_receive_message (GSocket *socket,
GSocketAddress **address,
@ -142,6 +148,7 @@ gssize g_socket_receive_message (GSocket
GSocketControlMessage ***messages,
gint *num_messages,
gint *flags,
GCancellable *cancellable,
GError **error);
gssize g_socket_send_message (GSocket *socket,
GSocketAddress *address,
@ -150,6 +157,7 @@ gssize g_socket_send_message (GSocket
GSocketControlMessage **messages,
gint num_messages,
gint flags,
GCancellable *cancellable,
GError **error);
gboolean g_socket_close (GSocket *socket,
GError **error);

4
gio/gsocketclient.c
View File

@ -528,7 +528,7 @@ g_socket_client_connect (GSocketClient *client,
socket = create_socket (client, address, &last_error);
if (socket != NULL)
{
if (g_socket_connect (socket, address, &last_error))
if (g_socket_connect (socket, address, cancellable, &last_error))
connection = g_socket_connection_factory_create_connection (socket);
g_object_unref (socket);
@ -776,7 +776,7 @@ g_socket_client_enumerator_callback (GObject *object,
if (socket != NULL)
{
g_socket_set_blocking (socket, FALSE);
if (g_socket_connect (socket, address, &tmp_error))
if (g_socket_connect (socket, address, data->cancellable, &tmp_error))
{
data->current_socket = socket;
g_socket_client_async_connect_complete (data);

27
gio/gsocketinputstream.c
View File

@ -112,11 +112,8 @@ g_socket_input_stream_read (GInputStream *stream,
{
GSocketInputStream *input_stream = G_SOCKET_INPUT_STREAM (stream);
if (!g_socket_condition_wait (input_stream->priv->socket,
G_IO_IN, cancellable, error))
return -1;
return g_socket_receive (input_stream->priv->socket, buffer, count, error);
return g_socket_receive (input_stream->priv->socket, buffer, count,
cancellable, error);
}
static gboolean
@ -126,22 +123,18 @@ g_socket_input_stream_read_ready (GSocket *socket,
{
GSimpleAsyncResult *simple;
GError *error = NULL;
gssize result;
simple = stream->priv->result;
stream->priv->result = NULL;
if (!g_cancellable_set_error_if_cancelled (stream->priv->cancellable,
&error))
{
gssize result;
result = g_socket_receive (stream->priv->socket,
stream->priv->buffer,
stream->priv->count,
&error);
if (result >= 0)
g_simple_async_result_set_op_res_gssize (simple, result);
}
result = g_socket_receive (stream->priv->socket,
stream->priv->buffer,
stream->priv->count,
stream->priv->cancellable,
&error);
if (result >= 0)
g_simple_async_result_set_op_res_gssize (simple, result);
if (error)
{

32
gio/gsocketlistener.c
View File

@ -628,7 +628,7 @@ g_socket_listener_accept_socket (GSocketListener *listener,
g_main_loop_unref (loop);
}
if (!(socket = g_socket_accept (accept_socket, error)))
if (!(socket = g_socket_accept (accept_socket, cancellable, error)))
return NULL;
if (source_object)
@ -695,27 +695,21 @@ accept_ready (GSocket *accept_socket,
{
struct AcceptAsyncData *data = _data;
GError *error = NULL;
GSocket *socket;
GObject *source_object;
if (!g_cancellable_set_error_if_cancelled (data->cancellable,
&error))
socket = g_socket_accept (accept_socket, data->cancellable, &error);
if (socket)
{
GSocket *socket;
GObject *source_object;
socket = g_socket_accept (accept_socket, &error);
if (socket)
{
g_simple_async_result_set_op_res_gpointer (data->simple, socket,
g_object_unref);
source_object = g_object_get_qdata (G_OBJECT (accept_socket), source_quark);
if (source_object)
g_object_set_qdata_full (G_OBJECT (data->simple),
source_quark,
g_object_ref (source_object), g_object_unref);
}
g_simple_async_result_set_op_res_gpointer (data->simple, socket,
g_object_unref);
source_object = g_object_get_qdata (G_OBJECT (accept_socket), source_quark);
if (source_object)
g_object_set_qdata_full (G_OBJECT (data->simple),
source_quark,
g_object_ref (source_object), g_object_unref);
}
if (error)
else
{
g_simple_async_result_set_from_error (data->simple, error);
g_error_free (error);

27
gio/gsocketoutputstream.c
View File

@ -114,11 +114,8 @@ g_socket_output_stream_write (GOutputStream *stream,
{
GSocketOutputStream *onput_stream = G_SOCKET_OUTPUT_STREAM (stream);
if (!g_socket_condition_wait (onput_stream->priv->socket,
G_IO_OUT, cancellable, error))
return -1;
return g_socket_send (onput_stream->priv->socket, buffer, count, error);
return g_socket_send (onput_stream->priv->socket, buffer, count,
cancellable, error);
}
static gboolean
@ -128,22 +125,18 @@ g_socket_output_stream_write_ready (GSocket *socket,
{
GSimpleAsyncResult *simple;
GError *error = NULL;
gssize result;
simple = stream->priv->result;
stream->priv->result = NULL;
if (!g_cancellable_set_error_if_cancelled (stream->priv->cancellable,
&error))
{
gssize result;
result = g_socket_send (stream->priv->socket,
stream->priv->buffer,
stream->priv->count,
&error);
if (result >= 0)
g_simple_async_result_set_op_res_gssize (simple, result);
}
result = g_socket_send (stream->priv->socket,
stream->priv->buffer,
stream->priv->count,
stream->priv->cancellable,
&error);
if (result >= 0)
g_simple_async_result_set_op_res_gssize (simple, result);
if (error)
{

21
gio/gtcpconnection.c
View File

@ -175,17 +175,9 @@ g_tcp_connection_close (GIOStream *stream,
{
while (TRUE)
{
if (!g_socket_condition_wait (socket,
G_IO_IN, cancellable, error))
{
had_error = TRUE;
error = NULL;
break;
}
my_error = NULL;
ret = g_socket_receive (socket, buffer, sizeof (buffer),
&my_error);
cancellable, &my_error);
if (ret < 0)
{
if (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
@ -265,15 +257,8 @@ close_read_ready (GSocket *socket,
char buffer[1024];
gssize ret;
if (g_cancellable_set_error_if_cancelled (data->cancellable,
&error))
{
async_close_finish (data, error, TRUE);
g_error_free (error);
return FALSE;
}
ret = g_socket_receive (socket, buffer, sizeof (buffer), &error);
ret = g_socket_receive (socket, buffer, sizeof (buffer),
data->cancellable, &error);
if (ret < 0)
{
if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))

8
gio/gunixconnection.c
View File

@ -86,8 +86,7 @@ g_unix_connection_send_fd (GUnixConnection *connection,
}
g_object_get (connection, "socket", &socket, NULL);
if (!g_socket_condition_wait (socket, G_IO_OUT, cancellable, error) ||
g_socket_send_message (socket, NULL, NULL, 0, &scm, 1, 0, error) != 1)
if (g_socket_send_message (socket, NULL, NULL, 0, &scm, 1, 0, cancellable, error) != 1)
/* XXX could it 'fail' with zero? */
{
g_object_unref (socket);
@ -133,9 +132,8 @@ g_unix_connection_receive_fd (GUnixConnection *connection,
g_return_val_if_fail (G_IS_UNIX_CONNECTION (connection), -1);
g_object_get (connection, "socket", &socket, NULL);
if (!g_socket_condition_wait (socket, G_IO_IN, cancellable, error) ||
g_socket_receive_message (socket, NULL, NULL, 0,
&scms, &nscm, NULL, error) != 1)
if (g_socket_receive_message (socket, NULL, NULL, 0,
&scms, &nscm, NULL, cancellable, error) != 1)
/* XXX it _could_ 'fail' with zero. */
{
g_object_unref (socket);

14
gio/tests/socket-client.c
View File

@ -172,7 +172,7 @@ main (int argc,
return 1;
}
if (g_socket_connect (socket, address, &error))
if (g_socket_connect (socket, address, cancellable, &error))
break;
g_printerr ("%s: Connection to %s failed: %s, trying next\n", argv[0], socket_address_to_string (address), error->message);
g_error_free (error);
@ -215,9 +215,11 @@ main (int argc,
ensure_condition (socket, "send", cancellable, G_IO_OUT);
if (use_udp)
size = g_socket_send_to (socket, address,
buffer, to_send, &error);
buffer, to_send,
cancellable, &error);
else
size = g_socket_send (socket, buffer, to_send, &error);
size = g_socket_send (socket, buffer, to_send,
cancellable, &error);
if (size < 0)
{
@ -252,9 +254,11 @@ main (int argc,
ensure_condition (socket, "receive", cancellable, G_IO_IN);
if (use_udp)
size = g_socket_receive_from (socket, &src_address,
buffer, sizeof buffer, &error);
buffer, sizeof buffer,
cancellable, &error);
else
size = g_socket_receive (socket, buffer, sizeof buffer, &error);
size = g_socket_receive (socket, buffer, sizeof buffer,
cancellable, &error);
if (size < 0)
{

13
gio/tests/socket-server.c
View File

@ -170,7 +170,7 @@ main (int argc,
g_print ("listening on port %d...\n", port);
ensure_condition (socket, "accept", cancellable, G_IO_IN);
new_socket = g_socket_accept (socket, &error);
new_socket = g_socket_accept (socket, cancellable, &error);
if (!new_socket)
{
g_printerr ("Error accepting socket: %s\n",
@ -211,9 +211,11 @@ main (int argc,
ensure_condition (recv_socket, "receive", cancellable, G_IO_IN);
if (use_udp)
size = g_socket_receive_from (recv_socket, &address,
buffer, sizeof buffer, &error);
buffer, sizeof buffer,
cancellable, &error);
else
size = g_socket_receive (recv_socket, buffer, sizeof buffer, &error);
size = g_socket_receive (recv_socket, buffer, sizeof buffer,
cancellable, &error);
if (size < 0)
{
@ -243,9 +245,10 @@ main (int argc,
ensure_condition (recv_socket, "send", cancellable, G_IO_OUT);
if (use_udp)
size = g_socket_send_to (recv_socket, address,
buffer, to_send, &error);
buffer, to_send, cancellable, &error);
else
size = g_socket_send (recv_socket, buffer, to_send, &error);
size = g_socket_send (recv_socket, buffer, to_send,
cancellable, &error);
if (size < 0)
{