Import Upstream version 2.72.4
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392
gio/tests/pollable.c
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392
gio/tests/pollable.c
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/* GLib testing framework examples and tests
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*
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* Copyright (C) 2010 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gio/gio.h>
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#include <glib/gstdio.h>
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#ifdef G_OS_UNIX
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#include <dlfcn.h>
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#include <fcntl.h>
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#include <gio/gunixinputstream.h>
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#include <gio/gunixoutputstream.h>
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#endif
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GMainLoop *loop;
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GPollableInputStream *in;
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GOutputStream *out;
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static gboolean
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poll_source_callback (GPollableInputStream *in,
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gpointer user_data)
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{
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GError *error = NULL;
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char buf[2];
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gssize nread;
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gboolean *success = user_data;
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g_assert_true (g_pollable_input_stream_is_readable (G_POLLABLE_INPUT_STREAM (in)));
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nread = g_pollable_input_stream_read_nonblocking (in, buf, 2, NULL, &error);
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g_assert_no_error (error);
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g_assert_cmpint (nread, ==, 2);
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g_assert_cmpstr (buf, ==, "x");
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g_assert_false (g_pollable_input_stream_is_readable (G_POLLABLE_INPUT_STREAM (in)));
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*success = TRUE;
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return G_SOURCE_REMOVE;
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}
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static gboolean
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check_source_readability_callback (gpointer user_data)
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{
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gboolean expected = GPOINTER_TO_INT (user_data);
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gboolean readable;
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readable = g_pollable_input_stream_is_readable (in);
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g_assert_cmpint (readable, ==, expected);
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return G_SOURCE_REMOVE;
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}
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static gboolean
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write_callback (gpointer user_data)
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{
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const char *buf = "x";
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gssize nwrote;
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GError *error = NULL;
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g_assert_true (g_pollable_output_stream_is_writable (G_POLLABLE_OUTPUT_STREAM (out)));
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nwrote = g_output_stream_write (out, buf, 2, NULL, &error);
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g_assert_no_error (error);
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g_assert_cmpint (nwrote, ==, 2);
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g_assert_true (g_pollable_output_stream_is_writable (G_POLLABLE_OUTPUT_STREAM (out)));
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/* Give the pipe a few ticks to propagate the write for sockets. On my
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* iMac i7, 40 works, 30 doesn't. */
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g_usleep (80L);
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check_source_readability_callback (GINT_TO_POINTER (TRUE));
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return G_SOURCE_REMOVE;
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}
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static gboolean
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check_source_and_quit_callback (gpointer user_data)
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{
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check_source_readability_callback (user_data);
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g_main_loop_quit (loop);
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return G_SOURCE_REMOVE;
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}
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static void
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test_streams (void)
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{
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gboolean readable;
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GError *error = NULL;
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char buf[1];
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gssize nread;
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GSource *poll_source;
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gboolean success = FALSE;
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g_assert (g_pollable_input_stream_can_poll (in));
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g_assert (g_pollable_output_stream_can_poll (G_POLLABLE_OUTPUT_STREAM (out)));
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readable = g_pollable_input_stream_is_readable (in);
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g_assert (!readable);
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nread = g_pollable_input_stream_read_nonblocking (in, buf, 1, NULL, &error);
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g_assert_cmpint (nread, ==, -1);
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g_assert_error (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK);
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g_clear_error (&error);
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/* Create 4 sources, in decreasing order of priority:
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* 1. poll source on @in
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* 2. idle source that checks if @in is readable once
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* (it won't be) and then removes itself
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* 3. idle source that writes a byte to @out, checks that
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* @in is now readable, and removes itself
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* 4. idle source that checks if @in is readable once
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* (it won't be, since the poll source will fire before
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* this one does) and then quits the loop.
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*
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* If the poll source triggers before it should, then it will get a
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* %G_IO_ERROR_WOULD_BLOCK, and if check() fails in either
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* direction, we will catch it at some point.
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*/
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poll_source = g_pollable_input_stream_create_source (in, NULL);
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g_source_set_priority (poll_source, 1);
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g_source_set_callback (poll_source, (GSourceFunc) poll_source_callback, &success, NULL);
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g_source_attach (poll_source, NULL);
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g_source_unref (poll_source);
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g_idle_add_full (2, check_source_readability_callback, GINT_TO_POINTER (FALSE), NULL);
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g_idle_add_full (3, write_callback, NULL, NULL);
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g_idle_add_full (4, check_source_and_quit_callback, GINT_TO_POINTER (FALSE), NULL);
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loop = g_main_loop_new (NULL, FALSE);
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g_main_loop_run (loop);
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g_main_loop_unref (loop);
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g_assert_cmpint (success, ==, TRUE);
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}
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#ifdef G_OS_UNIX
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#define g_assert_not_pollable(fd) \
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G_STMT_START { \
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in = G_POLLABLE_INPUT_STREAM (g_unix_input_stream_new (fd, FALSE)); \
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out = g_unix_output_stream_new (fd, FALSE); \
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\
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g_assert (!g_pollable_input_stream_can_poll (in)); \
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g_assert (!g_pollable_output_stream_can_poll ( \
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G_POLLABLE_OUTPUT_STREAM (out))); \
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\
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g_clear_object (&in); \
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g_clear_object (&out); \
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} G_STMT_END
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static void
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test_pollable_unix_pipe (void)
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{
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int pipefds[2], status;
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g_test_summary ("Test that pipes are considered pollable, just like sockets");
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status = pipe (pipefds);
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g_assert_cmpint (status, ==, 0);
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in = G_POLLABLE_INPUT_STREAM (g_unix_input_stream_new (pipefds[0], TRUE));
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out = g_unix_output_stream_new (pipefds[1], TRUE);
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test_streams ();
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g_object_unref (in);
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g_object_unref (out);
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}
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static void
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test_pollable_unix_pty (void)
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{
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int (*openpty_impl) (int *, int *, char *, void *, void *);
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int a, b, status;
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#ifdef LIBUTIL_SONAME
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void *handle;
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#endif
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g_test_summary ("Test that PTYs are considered pollable");
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#ifdef LIBUTIL_SONAME
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handle = dlopen (LIBUTIL_SONAME, RTLD_GLOBAL | RTLD_LAZY);
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g_assert_nonnull (handle);
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#endif
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openpty_impl = dlsym (RTLD_DEFAULT, "openpty");
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if (openpty_impl == NULL)
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{
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g_test_skip ("System does not support openpty()");
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goto close_libutil;
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}
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status = openpty_impl (&a, &b, NULL, NULL, NULL);
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if (status == -1)
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{
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g_test_skip ("Unable to open PTY");
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goto close_libutil;
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}
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in = G_POLLABLE_INPUT_STREAM (g_unix_input_stream_new (a, TRUE));
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out = g_unix_output_stream_new (b, TRUE);
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test_streams ();
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g_object_unref (in);
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g_object_unref (out);
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close (a);
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close (b);
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close_libutil:
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#ifdef LIBUTIL_SONAME
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dlclose (handle);
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#else
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return;
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#endif
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}
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static void
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test_pollable_unix_file (void)
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{
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int fd;
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g_test_summary ("Test that regular files are not considered pollable");
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fd = g_open ("/etc/hosts", O_RDONLY, 0);
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if (fd == -1)
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{
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g_test_skip ("Unable to open /etc/hosts");
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return;
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}
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g_assert_not_pollable (fd);
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close (fd);
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}
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static void
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test_pollable_unix_nulldev (void)
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{
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int fd;
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g_test_summary ("Test that /dev/null is not considered pollable, but only if "
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"on a system where we are able to tell it apart from devices "
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"that actually implement poll");
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#if defined (HAVE_EPOLL_CREATE) || defined (HAVE_KQUEUE)
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fd = g_open ("/dev/null", O_RDWR, 0);
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g_assert_cmpint (fd, !=, -1);
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g_assert_not_pollable (fd);
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close (fd);
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#else
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g_test_skip ("Cannot detect /dev/null as non-pollable on this system");
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#endif
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}
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static void
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test_pollable_converter (void)
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{
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GConverter *converter;
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GError *error = NULL;
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GInputStream *ibase;
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int pipefds[2], status;
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status = pipe (pipefds);
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g_assert_cmpint (status, ==, 0);
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ibase = G_INPUT_STREAM (g_unix_input_stream_new (pipefds[0], TRUE));
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converter = G_CONVERTER (g_charset_converter_new ("UTF-8", "UTF-8", &error));
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g_assert_no_error (error);
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in = G_POLLABLE_INPUT_STREAM (g_converter_input_stream_new (ibase, converter));
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g_object_unref (converter);
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g_object_unref (ibase);
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out = g_unix_output_stream_new (pipefds[1], TRUE);
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test_streams ();
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g_object_unref (in);
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g_object_unref (out);
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}
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#endif
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static void
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client_connected (GObject *source,
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GAsyncResult *result,
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gpointer user_data)
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{
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GSocketClient *client = G_SOCKET_CLIENT (source);
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GSocketConnection **conn = user_data;
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GError *error = NULL;
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*conn = g_socket_client_connect_finish (client, result, &error);
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g_assert_no_error (error);
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}
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static void
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server_connected (GObject *source,
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GAsyncResult *result,
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gpointer user_data)
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{
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GSocketListener *listener = G_SOCKET_LISTENER (source);
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GSocketConnection **conn = user_data;
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GError *error = NULL;
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*conn = g_socket_listener_accept_finish (listener, result, NULL, &error);
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g_assert_no_error (error);
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}
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static void
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test_pollable_socket (void)
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{
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GInetAddress *iaddr;
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GSocketAddress *saddr, *effective_address;
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GSocketListener *listener;
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GSocketClient *client;
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GError *error = NULL;
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GSocketConnection *client_conn = NULL, *server_conn = NULL;
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iaddr = g_inet_address_new_loopback (G_SOCKET_FAMILY_IPV4);
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saddr = g_inet_socket_address_new (iaddr, 0);
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g_object_unref (iaddr);
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listener = g_socket_listener_new ();
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g_socket_listener_add_address (listener, saddr,
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G_SOCKET_TYPE_STREAM,
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G_SOCKET_PROTOCOL_TCP,
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NULL,
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&effective_address,
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&error);
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g_assert_no_error (error);
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g_object_unref (saddr);
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client = g_socket_client_new ();
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g_socket_client_connect_async (client,
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G_SOCKET_CONNECTABLE (effective_address),
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NULL, client_connected, &client_conn);
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g_socket_listener_accept_async (listener, NULL,
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server_connected, &server_conn);
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while (!client_conn || !server_conn)
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g_main_context_iteration (NULL, TRUE);
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in = G_POLLABLE_INPUT_STREAM (g_io_stream_get_input_stream (G_IO_STREAM (client_conn)));
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out = g_io_stream_get_output_stream (G_IO_STREAM (server_conn));
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test_streams ();
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g_object_unref (client_conn);
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g_object_unref (server_conn);
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g_object_unref (client);
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g_object_unref (listener);
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g_object_unref (effective_address);
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}
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int
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main (int argc,
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char *argv[])
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{
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g_test_init (&argc, &argv, NULL);
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#ifdef G_OS_UNIX
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g_test_add_func ("/pollable/unix/pipe", test_pollable_unix_pipe);
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g_test_add_func ("/pollable/unix/pty", test_pollable_unix_pty);
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g_test_add_func ("/pollable/unix/file", test_pollable_unix_file);
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g_test_add_func ("/pollable/unix/nulldev", test_pollable_unix_nulldev);
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g_test_add_func ("/pollable/converter", test_pollable_converter);
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#endif
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g_test_add_func ("/pollable/socket", test_pollable_socket);
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return g_test_run();
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}
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