New logging system

1 files changed, 115 insertions, 0 deletions

diff --git a/src/common/logging/log.h b/src/common/logging/log.h
new file mode 100644
index 00000000..1eec34fb
--- /dev/null
+++ b/src/common/logging/log.h
@@ -0,0 +1,115 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <cassert>
+#include <chrono>
+#include <string>
+
+#include "common/common_types.h"
+
+namespace Log {
+
+/// Specifies the severity or level of detail of the log message.
+enum class Level : u8 {
+    Trace,    ///< Extremely detailed and repetitive debugging information that is likely to
+              ///  pollute logs.
+    Debug,    ///< Less detailed debugging information.
+    Info,     ///< Status information from important points during execution.
+    Warning,  ///< Minor or potential problems found during execution of a task.
+    Error,    ///< Major problems found during execution of a task that prevent it from being
+              ///  completed.
+    Critical, ///< Major problems during execution that threathen the stability of the entire
+              ///  application.
+
+    Count ///< Total number of logging levels
+};
+
+typedef u8 ClassType;
+
+/**
+ * Specifies the sub-system that generated the log message.
+ *
+ * @note If you add a new entry here, also add a corresponding one to `ALL_LOG_CLASSES` in log.cpp.
+ */
+enum class Class : ClassType {
+    Log,                        ///< Messages about the log system itself
+    Common,                     ///< Library routines
+    Common_Filesystem,          ///< Filesystem interface library
+    Common_Memory,              ///< Memory mapping and management functions
+    Core,                       ///< LLE emulation core
+    Core_ARM11,                 ///< ARM11 CPU core
+    Config,                     ///< Emulator configuration (including commandline)
+    Debug,                      ///< Debugging tools
+    Debug_Emulated,             ///< Debug messages from the emulated programs
+    Debug_GPU,                  ///< GPU debugging tools
+    Debug_Breakpoint,           ///< Logging breakpoints and watchpoints
+    Kernel,                     ///< The HLE implementation of the CTR kernel
+    Kernel_SVC,                 ///< Kernel system calls
+    Service,                    ///< HLE implementation of system services. Each major service
+                                ///  should have its own subclass.
+    Service_SRV,                ///< The SRV (Service Directory) implementation
+    Service_FS,                 ///< The FS (Filesystem) service implementation
+    Service_APT,                ///< The APT (Applets) service
+    Service_GSP,                ///< The GSP (GPU control) service
+    Service_AC,                 ///< The AC (WiFi status) service
+    Service_PTM,                ///< The PTM (Power status & misc.) service
+    Service_CFG,                ///< The CFG (Configuration) service
+    Service_DSP,                ///< The DSP (DSP control) service
+    Service_HID,                ///< The HID (User input) service
+    HW,                         ///< Low-level hardware emulation
+    HW_Memory,                  ///< Memory-map and address translation
+    HW_GPU,                     ///< GPU control emulation
+    Frontend,                   ///< Emulator UI
+    Render,                     ///< Emulator video output and hardware acceleration
+    Render_Software,            ///< Software renderer backend
+    Render_OpenGL,              ///< OpenGL backend
+    Loader,                     ///< ROM loader
+
+    Count ///< Total number of logging classes
+};
+
+/**
+ * Level below which messages are simply discarded without buffering regardless of the display
+ * settings.
+ */
+const Level MINIMUM_LEVEL =
+#ifdef _DEBUG
+    Level::Trace;
+#else
+    Level::Debug;
+#endif
+
+/**
+ * Logs a message to the global logger. This proxy exists to avoid exposing the details of the
+ * Logger class, including the ConcurrentRingBuffer template, to all files that desire to log
+ * messages, reducing unecessary recompilations.
+ */
+void LogMessage(Class log_class, Level log_level,
+    const char* filename, unsigned int line_nr, const char* function,
+#ifdef _MSC_VER
+    _Printf_format_string_
+#endif
+    const char* format, ...)
+#ifdef __GNUC__
+    __attribute__((format(printf, 6, 7)))
+#endif
+    ;
+
+} // namespace Log
+
+#define LOG_GENERIC(log_class, log_level, ...) \
+    do { \
+        if (::Log::Level::log_level >= ::Log::MINIMUM_LEVEL) \
+            ::Log::LogMessage(::Log::Class::log_class, ::Log::Level::log_level, \
+                       __FILE__, __LINE__, __func__, __VA_ARGS__); \
+    } while (0)
+
+#define LOG_TRACE(   log_class, ...) LOG_GENERIC(log_class, Trace,    __VA_ARGS__)
+#define LOG_DEBUG(   log_class, ...) LOG_GENERIC(log_class, Debug,    __VA_ARGS__)
+#define LOG_INFO(    log_class, ...) LOG_GENERIC(log_class, Info,     __VA_ARGS__)
+#define LOG_WARNING( log_class, ...) LOG_GENERIC(log_class, Warning,  __VA_ARGS__)
+#define LOG_ERROR(   log_class, ...) LOG_GENERIC(log_class, Error,    __VA_ARGS__)
+#define LOG_CRITICAL(log_class, ...) LOG_GENERIC(log_class, Critical, __VA_ARGS__)