glib/gio/tests/pollable.c

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/* GLib testing framework examples and tests
*
* Copyright (C) 2010 Red Hat, Inc.
*
* 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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gio/gio.h>
#include <glib/gstdio.h>
#ifdef G_OS_UNIX
#include <fcntl.h>
#include <gio/gunixinputstream.h>
#include <gio/gunixoutputstream.h>
#endif
GMainLoop *loop;
GPollableInputStream *in;
GOutputStream *out;
static gboolean
poll_source_callback (GPollableInputStream *in,
gpointer user_data)
{
GError *error = NULL;
char buf[2];
gssize nread;
gboolean *success = user_data;
nread = g_pollable_input_stream_read_nonblocking (in, buf, 2, NULL, &error);
g_assert_no_error (error);
g_assert_cmpint (nread, ==, 2);
g_assert_cmpstr (buf, ==, "x");
*success = TRUE;
return G_SOURCE_REMOVE;
}
static gboolean
check_source_readability_callback (gpointer user_data)
{
gboolean expected = GPOINTER_TO_INT (user_data);
gboolean readable;
readable = g_pollable_input_stream_is_readable (in);
g_assert_cmpint (readable, ==, expected);
return G_SOURCE_REMOVE;
}
static gboolean
write_callback (gpointer user_data)
{
char *buf = "x";
gssize nwrote;
GError *error = NULL;
nwrote = g_output_stream_write (out, buf, 2, NULL, &error);
g_assert_no_error (error);
g_assert_cmpint (nwrote, ==, 2);
/* Give the pipe a few ticks to propagate the write for sockets. On my
* iMac i7, 40 works, 30 doesn't. */
g_usleep (80L);
check_source_readability_callback (GINT_TO_POINTER (TRUE));
return G_SOURCE_REMOVE;
}
static gboolean
check_source_and_quit_callback (gpointer user_data)
{
check_source_readability_callback (user_data);
g_main_loop_quit (loop);
return G_SOURCE_REMOVE;
}
static void
test_streams (void)
{
gboolean readable;
GError *error = NULL;
char buf[1];
gssize nread;
GSource *poll_source;
gboolean success = FALSE;
g_assert (g_pollable_input_stream_can_poll (in));
g_assert (g_pollable_output_stream_can_poll (G_POLLABLE_OUTPUT_STREAM (out)));
readable = g_pollable_input_stream_is_readable (in);
g_assert (!readable);
nread = g_pollable_input_stream_read_nonblocking (in, buf, 1, NULL, &error);
g_assert_cmpint (nread, ==, -1);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK);
g_clear_error (&error);
/* Create 4 sources, in decreasing order of priority:
* 1. poll source on @in
* 2. idle source that checks if @in is readable once
* (it won't be) and then removes itself
* 3. idle source that writes a byte to @out, checks that
* @in is now readable, and removes itself
* 4. idle source that checks if @in is readable once
* (it won't be, since the poll source will fire before
* this one does) and then quits the loop.
*
* If the poll source triggers before it should, then it will get a
* %G_IO_ERROR_WOULD_BLOCK, and if check() fails in either
* direction, we will catch it at some point.
*/
poll_source = g_pollable_input_stream_create_source (in, NULL);
g_source_set_priority (poll_source, 1);
g_source_set_callback (poll_source, (GSourceFunc) poll_source_callback, &success, NULL);
g_source_attach (poll_source, NULL);
g_source_unref (poll_source);
g_idle_add_full (2, check_source_readability_callback, GINT_TO_POINTER (FALSE), NULL);
g_idle_add_full (3, write_callback, NULL, NULL);
g_idle_add_full (4, check_source_and_quit_callback, GINT_TO_POINTER (FALSE), NULL);
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
g_main_loop_unref (loop);
g_assert_cmpint (success, ==, TRUE);
}
#ifdef G_OS_UNIX
static void
test_pollable_unix (void)
{
int pipefds[2], status, fd;
status = pipe (pipefds);
g_assert_cmpint (status, ==, 0);
in = G_POLLABLE_INPUT_STREAM (g_unix_input_stream_new (pipefds[0], TRUE));
out = g_unix_output_stream_new (pipefds[1], TRUE);
test_streams ();
g_object_unref (in);
g_object_unref (out);
/* Non-pipe/socket unix streams are not pollable */
fd = g_open ("/dev/null", O_RDWR, 0);
g_assert_cmpint (fd, !=, -1);
in = G_POLLABLE_INPUT_STREAM (g_unix_input_stream_new (fd, FALSE));
out = g_unix_output_stream_new (fd, FALSE);
g_assert (!g_pollable_input_stream_can_poll (in));
g_assert (!g_pollable_output_stream_can_poll (G_POLLABLE_OUTPUT_STREAM (out)));
g_object_unref (in);
g_object_unref (out);
close (fd);
}
static void
test_pollable_converter (void)
{
GConverter *converter;
GError *error = NULL;
GInputStream *ibase;
int pipefds[2], status;
status = pipe (pipefds);
g_assert_cmpint (status, ==, 0);
ibase = G_INPUT_STREAM (g_unix_input_stream_new (pipefds[0], TRUE));
converter = G_CONVERTER (g_charset_converter_new ("UTF-8", "UTF-8", &error));
g_assert_no_error (error);
in = G_POLLABLE_INPUT_STREAM (g_converter_input_stream_new (ibase, converter));
g_object_unref (converter);
g_object_unref (ibase);
out = g_unix_output_stream_new (pipefds[1], TRUE);
test_streams ();
g_object_unref (in);
g_object_unref (out);
}
#endif
static void
client_connected (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
GSocketClient *client = G_SOCKET_CLIENT (source);
GSocketConnection **conn = user_data;
GError *error = NULL;
*conn = g_socket_client_connect_finish (client, result, &error);
g_assert_no_error (error);
}
static void
server_connected (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
GSocketListener *listener = G_SOCKET_LISTENER (source);
GSocketConnection **conn = user_data;
GError *error = NULL;
*conn = g_socket_listener_accept_finish (listener, result, NULL, &error);
g_assert_no_error (error);
}
static void
test_pollable_socket (void)
{
GInetAddress *iaddr;
GSocketAddress *saddr, *effective_address;
GSocketListener *listener;
GSocketClient *client;
GError *error = NULL;
GSocketConnection *client_conn = NULL, *server_conn = NULL;
iaddr = g_inet_address_new_loopback (G_SOCKET_FAMILY_IPV4);
saddr = g_inet_socket_address_new (iaddr, 0);
g_object_unref (iaddr);
listener = g_socket_listener_new ();
g_socket_listener_add_address (listener, saddr,
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_TCP,
NULL,
&effective_address,
&error);
g_assert_no_error (error);
g_object_unref (saddr);
client = g_socket_client_new ();
g_socket_client_connect_async (client,
G_SOCKET_CONNECTABLE (effective_address),
NULL, client_connected, &client_conn);
g_socket_listener_accept_async (listener, NULL,
server_connected, &server_conn);
while (!client_conn || !server_conn)
g_main_context_iteration (NULL, TRUE);
in = G_POLLABLE_INPUT_STREAM (g_io_stream_get_input_stream (G_IO_STREAM (client_conn)));
out = g_io_stream_get_output_stream (G_IO_STREAM (server_conn));
test_streams ();
g_object_unref (client_conn);
g_object_unref (server_conn);
g_object_unref (client);
g_object_unref (listener);
g_object_unref (effective_address);
}
int
main (int argc,
char *argv[])
{
g_test_init (&argc, &argv, NULL);
#ifdef G_OS_UNIX
g_test_add_func ("/pollable/unix", test_pollable_unix);
g_test_add_func ("/pollable/converter", test_pollable_converter);
#endif
g_test_add_func ("/pollable/socket", test_pollable_socket);
return g_test_run();
}