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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>
144 lines
4.2 KiB
C
144 lines
4.2 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 "gio.h"
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#include "gmemorymonitorbase.h"
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#include "gmemorymonitorpoll.h"
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typedef struct
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{
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double simulated_mem_free_ratio;
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int expected_warning_level;
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} TestData;
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static void
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memory_monitor_signal_cb (GMemoryMonitor *m,
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GMemoryMonitorWarningLevel level,
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void *user_data)
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{
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int *out_warning_level = user_data;
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g_assert_cmpint (*out_warning_level, ==, -1);
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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_dup_default (void)
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{
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GMemoryMonitor *monitor;
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monitor = g_memory_monitor_dup_default ();
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g_assert_nonnull (monitor);
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g_object_unref (monitor);
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}
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static void
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test_event (const void *data)
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{
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const TestData *test_data = data;
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GMemoryMonitorPoll *monitor;
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GError *local_error = NULL;
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int warning_level = -1;
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unsigned long warning_id;
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monitor = g_object_new (G_TYPE_MEMORY_MONITOR_POLL,
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"poll-interval-ms", 50,
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"mem-free-ratio", test_data->simulated_mem_free_ratio,
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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_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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while (warning_level == -1)
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g_main_context_iteration (NULL, TRUE);
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g_assert_cmpint (warning_level, ==, test_data->expected_warning_level);
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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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static void
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warning_cb (GMemoryMonitor *m,
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GMemoryMonitorWarningLevel level,
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GMainLoop *test_loop)
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{
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char *str = g_enum_to_string (G_TYPE_MEMORY_MONITOR_WARNING_LEVEL, level);
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g_free (str);
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g_main_loop_quit (test_loop);
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}
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static void
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do_watch_memory (void)
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{
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GMemoryMonitor *m;
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GMainLoop *loop;
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m = g_memory_monitor_dup_default ();
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loop = g_main_loop_new (NULL, TRUE);
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g_signal_connect (G_OBJECT (m), "low-memory-warning",
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G_CALLBACK (warning_cb), loop);
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g_main_loop_run (loop);
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g_signal_handlers_disconnect_by_func (G_OBJECT (m),
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G_CALLBACK (warning_cb), loop);
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g_main_loop_unref (loop);
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g_clear_object (&m);
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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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if (argc == 2 && strcmp (argv[1], "--watch") == 0)
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{
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do_watch_memory ();
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return 0;
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}
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g_setenv ("GIO_USE_MEMORY_MONITOR", "poll", TRUE);
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g_test_init (&argc, &argv, NULL);
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g_test_add_func ("/memory-monitor-poll/dup-default", test_dup_default);
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g_test_add_data_func ("/memory-monitor-poll/critical-event",
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&((const TestData) {
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.simulated_mem_free_ratio = 0.19,
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.expected_warning_level = 255,
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}), test_event);
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g_test_add_data_func ("/memory-monitor-poll/medium-event",
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&((const TestData) {
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.simulated_mem_free_ratio = 0.29,
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.expected_warning_level = 100,
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}), test_event);
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g_test_add_data_func ("/memory-monitor-poll/low-event",
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&((const TestData) {
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.simulated_mem_free_ratio = 0.39,
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.expected_warning_level = 50,
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}), test_event);
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return g_test_run ();
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}
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