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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright 2025 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 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, see <http://www.gnu.org/licenses/>.
*/
#include <glib/glib.h>
#include <glib/gstdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "gio.h"
#include "gmemorymonitorpsi.h"
typedef struct
{
char *mock_psi_path;
char *mock_proc_path;
} SetupData;
static void
tests_setup (SetupData *setup_data,
gconstpointer data)
{
char *proc_contents = NULL;
GError *local_error = NULL;
setup_data->mock_psi_path = g_build_filename (g_get_tmp_dir (), "cgroup", NULL);
g_assert_no_errno (mkfifo (setup_data->mock_psi_path, S_IRUSR | S_IWUSR));
setup_data->mock_proc_path = g_build_filename (g_get_tmp_dir (), "psi-proc", NULL);
proc_contents = g_strdup_printf ("0::%s", setup_data->mock_psi_path);
g_file_set_contents_full (setup_data->mock_proc_path, proc_contents,
-1, G_FILE_SET_CONTENTS_NONE,
S_IRUSR | S_IWUSR, &local_error);
g_assert_no_error (local_error);
g_free (proc_contents);
}
static void
tests_teardown (SetupData *setup_data,
gconstpointer data)
{
g_unlink (setup_data->mock_proc_path);
g_free (setup_data->mock_proc_path);
g_unlink (setup_data->mock_psi_path);
g_free (setup_data->mock_psi_path);
}
static void
memory_monitor_psi_signal_cb (GMemoryMonitor *m,
GMemoryMonitorWarningLevel level,
gpointer user_data)
{
int *out_warning_level = user_data;
*out_warning_level = level;
g_main_context_wakeup (NULL);
}
static void
test_receive_signals (SetupData *setup, gconstpointer data)
{
GMemoryMonitorPsi *monitor;
unsigned long warning_id;
int warning_level = -1;
GError *local_error = NULL;
monitor = g_object_new (G_TYPE_MEMORY_MONITOR_PSI,
"proc-path", setup->mock_proc_path,
NULL);
warning_id = g_signal_connect (monitor, "low-memory-warning",
G_CALLBACK (memory_monitor_psi_signal_cb), &warning_level);
g_initable_init (G_INITABLE (monitor), NULL, &local_error);
g_assert_no_error (local_error);
g_file_set_contents (setup->mock_psi_path,
"test",
-1,
&local_error);
g_assert_no_error (local_error);
while (warning_level == -1)
g_main_context_iteration (NULL, TRUE);
g_assert_true (warning_level == 50 ||
warning_level == 100 ||
warning_level == 255);
g_signal_handler_disconnect (monitor, warning_id);
g_object_unref (monitor);
}
int
main (int argc, char **argv)
{
g_setenv ("GIO_USE_MEMORY_MONITOR", "psi", TRUE);
g_test_init (&argc, &argv, G_TEST_OPTION_ISOLATE_DIRS, NULL);
g_test_add ("/memory-monitor-psi/receive-signal", SetupData, NULL,
tests_setup, test_receive_signals, tests_teardown);
return g_test_run ();
}
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