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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "ProcessStacksWidget.h"
28#include <AK/ByteBuffer.h>
29#include <LibCore/File.h>
30#include <LibCore/Timer.h>
31#include <LibGUI/BoxLayout.h>
32
33ProcessStacksWidget::ProcessStacksWidget()
34{
35 set_layout(make<GUI::VerticalBoxLayout>());
36 layout()->set_margins({ 4, 4, 4, 4 });
37 m_stacks_editor = add<GUI::TextEditor>();
38 m_stacks_editor->set_readonly(true);
39
40 m_timer = add<Core::Timer>(1000, [this] { refresh(); });
41}
42
43ProcessStacksWidget::~ProcessStacksWidget()
44{
45}
46
47void ProcessStacksWidget::set_pid(pid_t pid)
48{
49 if (m_pid == pid)
50 return;
51 m_pid = pid;
52 refresh();
53}
54
55void ProcessStacksWidget::refresh()
56{
57 auto file = Core::File::construct(String::format("/proc/%d/stack", m_pid));
58 if (!file->open(Core::IODevice::ReadOnly)) {
59 m_stacks_editor->set_text(String::format("Unable to open %s", file->filename().characters()));
60 return;
61 }
62
63 m_stacks_editor->set_text(file->read_all());
64}