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ee5e750be3
It might be possible for the `low-memory-warning` signal to be emitted (by the GLib worker thread) before the test has connected to it, which could cause the tests to loop forever. Potentially fixes https://gitlab.gnome.org/pwithnall/glib/-/jobs/5322491, though I have not been able to reproduce the race locally. Signed-off-by: Philip Withnall <pwithnall@gnome.org>
120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright 2025 Red Hat, Inc.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 <glib/glib.h>
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#include <glib/gstdio.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "gio.h"
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#include "gmemorymonitorpsi.h"
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typedef struct
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{
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char *mock_psi_path;
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char *mock_proc_path;
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} SetupData;
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static void
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tests_setup (SetupData *setup_data,
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gconstpointer data)
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{
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char *proc_contents = NULL;
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GError *local_error = NULL;
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setup_data->mock_psi_path = g_build_filename (g_get_tmp_dir (), "cgroup", NULL);
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g_assert_no_errno (mkfifo (setup_data->mock_psi_path, S_IRUSR | S_IWUSR));
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setup_data->mock_proc_path = g_build_filename (g_get_tmp_dir (), "psi-proc", NULL);
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proc_contents = g_strdup_printf ("0::%s", setup_data->mock_psi_path);
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g_file_set_contents_full (setup_data->mock_proc_path, proc_contents,
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-1, G_FILE_SET_CONTENTS_NONE,
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S_IRUSR | S_IWUSR, &local_error);
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g_assert_no_error (local_error);
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g_free (proc_contents);
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}
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static void
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tests_teardown (SetupData *setup_data,
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gconstpointer data)
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{
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g_unlink (setup_data->mock_proc_path);
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g_free (setup_data->mock_proc_path);
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g_unlink (setup_data->mock_psi_path);
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g_free (setup_data->mock_psi_path);
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}
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static void
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memory_monitor_psi_signal_cb (GMemoryMonitor *m,
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GMemoryMonitorWarningLevel level,
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gpointer user_data)
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{
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int *out_warning_level = user_data;
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*out_warning_level = level;
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g_main_context_wakeup (NULL);
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}
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static void
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test_receive_signals (SetupData *setup, gconstpointer data)
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{
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GMemoryMonitorPsi *monitor;
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unsigned long warning_id;
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int warning_level = -1;
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GError *local_error = NULL;
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monitor = g_object_new (G_TYPE_MEMORY_MONITOR_PSI,
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"proc-path", setup->mock_proc_path,
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NULL);
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warning_id = g_signal_connect (monitor, "low-memory-warning",
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G_CALLBACK (memory_monitor_psi_signal_cb), &warning_level);
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g_initable_init (G_INITABLE (monitor), NULL, &local_error);
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g_assert_no_error (local_error);
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g_file_set_contents (setup->mock_psi_path,
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"test",
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-1,
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&local_error);
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g_assert_no_error (local_error);
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while (warning_level == -1)
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g_main_context_iteration (NULL, TRUE);
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g_assert_true (warning_level == 50 ||
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warning_level == 100 ||
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warning_level == 255);
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g_signal_handler_disconnect (monitor, warning_id);
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g_object_unref (monitor);
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}
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int
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main (int argc, char **argv)
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{
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g_setenv ("GIO_USE_MEMORY_MONITOR", "psi", TRUE);
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g_test_init (&argc, &argv, G_TEST_OPTION_ISOLATE_DIRS, NULL);
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g_test_add ("/memory-monitor-psi/receive-signal", SetupData, NULL,
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tests_setup, test_receive_signals, tests_teardown);
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return g_test_run ();
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}
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