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Messages buffer is intended to be of a fixed capacity (MAX_LOG_LINES), which cannot be achieved by std::queue unless we manually pop() extra elements. std::queue uses std::deque internally which most likely results in allocations performed continuously. FixedSizeQueue keeps a single buffer during its entire lifetime, avoiding any allocations except the ones performed by stored objects.
58 lines
1.1 KiB
C++
58 lines
1.1 KiB
C++
// Copyright 2017 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <QDockWidget>
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#include <mutex>
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#include <string>
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#include "Common/FixedSizeQueue.h"
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#include "Common/Logging/LogManager.h"
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class QCheckBox;
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class QCloseEvent;
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class QComboBox;
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class QPlainTextEdit;
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class QPushButton;
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class QTimer;
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class LogWidget final : public QDockWidget, LogListener
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{
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Q_OBJECT
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public:
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explicit LogWidget(QWidget* parent = nullptr);
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~LogWidget();
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protected:
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void closeEvent(QCloseEvent*) override;
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private:
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void UpdateLog();
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void UpdateFont();
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void CreateWidgets();
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void ConnectWidgets();
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void LoadSettings();
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void SaveSettings();
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void Log(LogTypes::LOG_LEVELS level, const char* text) override;
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// Log
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QCheckBox* m_log_wrap;
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QComboBox* m_log_font;
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QPushButton* m_log_clear;
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QPlainTextEdit* m_log_text;
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QTimer* m_timer;
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using LogEntry = std::pair<std::string, LogTypes::LOG_LEVELS>;
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// Maximum number of lines to show in log viewer
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static constexpr int MAX_LOG_LINES = 5000;
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std::mutex m_log_mutex;
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FixedSizeQueue<LogEntry, MAX_LOG_LINES> m_log_ring_buffer;
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};
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