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9676548800
Use a Threading::BackgroundAction to symbolicate stacks. This avoids blocking the main thread and keeps the GUI running (mostly.)
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "ThreadStackWidget.h"
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#include <AK/ByteBuffer.h>
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#include <LibCore/Timer.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibSymbolication/Symbolication.h>
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#include <LibThreading/BackgroundAction.h>
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ThreadStackWidget::ThreadStackWidget()
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{
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set_layout<GUI::VerticalBoxLayout>();
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layout()->set_margins({ 4, 4, 4, 4 });
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m_stack_editor = add<GUI::TextEditor>();
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m_stack_editor->set_mode(GUI::TextEditor::ReadOnly);
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m_stack_editor->set_text("Symbolicating...");
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}
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ThreadStackWidget::~ThreadStackWidget()
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{
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}
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void ThreadStackWidget::show_event(GUI::ShowEvent&)
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{
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refresh();
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if (!m_timer)
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m_timer = add<Core::Timer>(1000, [this] { refresh(); });
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}
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void ThreadStackWidget::hide_event(GUI::HideEvent&)
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{
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m_timer = nullptr;
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}
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void ThreadStackWidget::set_ids(pid_t pid, pid_t tid)
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{
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if (m_pid == pid && m_tid == tid)
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return;
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m_pid = pid;
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m_tid = tid;
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}
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class CompletionEvent : public Core::CustomEvent {
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public:
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explicit CompletionEvent(Vector<Symbolication::Symbol> symbols)
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: Core::CustomEvent(0)
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, m_symbols(move(symbols))
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{
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}
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Vector<Symbolication::Symbol> const& symbols() const { return m_symbols; }
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private:
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Vector<Symbolication::Symbol> m_symbols;
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};
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void ThreadStackWidget::refresh()
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{
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Threading::BackgroundAction<Vector<Symbolication::Symbol>>::create(
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[pid = m_pid, tid = m_tid] {
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return Symbolication::symbolicate_thread(pid, tid);
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},
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[weak_this = make_weak_ptr()](auto result) {
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if (!weak_this)
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return;
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Core::EventLoop::main().post_event(const_cast<Core::Object&>(*weak_this), make<CompletionEvent>(move(result)));
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});
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}
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void ThreadStackWidget::custom_event(Core::CustomEvent& event)
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{
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auto& completion_event = downcast<CompletionEvent>(event);
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StringBuilder builder;
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for (auto& symbol : completion_event.symbols()) {
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builder.appendff("{:p}", symbol.address);
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if (!symbol.name.is_empty())
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builder.appendff(" {}", symbol.name);
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builder.append('\n');
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}
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if (m_stack_editor->text() != builder.string_view()) {
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m_stack_editor->set_text(builder.string_view());
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}
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}
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