Use libbacktrace for Linux/macOS

logvisor: Mark logvisorAbort as [[noreturn]]

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "fmt"]
+	path = fmt
+	url = https://github.com/fmtlib/fmt
+[submodule "libbacktrace"]
+	path = libbacktrace
+	url = https://github.com/status-im/libbacktrace.git

CMakeLists.txt

@@ -1,8 +1,91 @@
-include_directories(include)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  cmake_minimum_required(VERSION 3.10 FATAL_ERROR) # because of c++17
+  project(nod VERSION 0.1)
+  if (NOT MSVC)
+    set(CMAKE_CXX_STANDARD 20)
+    set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  endif()
+endif()
+
+include (CMakePackageConfigHelpers)
+
+add_subdirectory(fmt)
+
 add_library(logvisor
             lib/logvisor.cpp
             include/logvisor/logvisor.hpp)
 
-set(LOGVISOR_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include CACHE PATH "logvisor include path" FORCE)
+if(APPLE OR UNIX)
+  include(ExternalProject)
+  find_package(Git REQUIRED)
+  find_program(MAKE_EXE NAMES gmake make)
+  ExternalProject_Add(
+          project_libbacktrace
+          PREFIX ${PROJECT_BINARY_DIR}/libbacktrace
+          GIT_REPOSITORY https://github.com/status-im/libbacktrace.git
+          GIT_TAG 2e878a38dd7144c84b665019b1085ea38ebe56d1
+          CONFIGURE_COMMAND ${PROJECT_BINARY_DIR}/libbacktrace/src/project_libbacktrace/configure --enable-host-shared --prefix=${PROJECT_BINARY_DIR}/libbacktrace/install --enable-shared=no --enable-static=yes
+          BUILD_COMMAND ${MAKE_EXE}
+          INSTALL_COMMAND ${MAKE_EXE} install
+          BUILD_IN_SOURCE 1
+  )
+  add_library(libbacktrace STATIC IMPORTED GLOBAL)
+  set_target_properties(libbacktrace PROPERTIES IMPORTED_LOCATION "${PROJECT_BINARY_DIR}/libbacktrace/install/lib/libbacktrace.a")
+  set_target_properties(libbacktrace PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${PROJECT_BINARY_DIR}/libbacktrace/install/include")
+  # Hack for INTERFACE_INCLUDE_DIRECTORIES propagation
+  # https://gitlab.kitware.com/cmake/cmake/-/issues/15052
+  file(MAKE_DIRECTORY "${PROJECT_BINARY_DIR}/libbacktrace/install/include")
+  add_dependencies(libbacktrace project_libbacktrace)
+  set(BACKTRACE_LIBS libbacktrace)
+else()
+  set(BACKTRACE_LIBS "")
+endif()
 
-install(DIRECTORY include/logvisor DESTINATION include/logvisor) 
+target_link_libraries(logvisor PUBLIC fmt)
+if(NX)
+    target_link_libraries(logvisor PUBLIC debug nxd optimized nx)
+else()
+    target_link_libraries(logvisor PRIVATE ${CMAKE_DL_LIBS} ${BACKTRACE_LIBS})
+endif()
+target_include_directories(logvisor PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
+
+install(DIRECTORY include/logvisor DESTINATION include)
+install(DIRECTORY fmt/include/fmt DESTINATION include)
+
+set(version_config_file "${PROJECT_BINARY_DIR}/logvisorConfigVersion.cmake")
+set(config_file "${PROJECT_BINARY_DIR}/logvisorConfig.cmake")
+set(config_install_dir "lib/cmake/logvisor")
+
+# Associate target with export
+install(
+    TARGETS logvisor fmt
+    EXPORT logvisorTargets
+    ARCHIVE DESTINATION "lib"
+    INCLUDES DESTINATION include  # This sets the INTERFACE_INCLUDE_DIRECTORIES property of the target.
+)
+
+# Install the target config files
+install(
+    EXPORT logvisorTargets
+    NAMESPACE "logvisor::"
+    DESTINATION "${config_install_dir}"
+)
+
+# Generate version config file
+write_basic_package_version_file(
+    "${version_config_file}"
+    COMPATIBILITY SameMajorVersion
+)
+
+# Generate config file
+configure_package_config_file(
+    "Config.cmake.in"
+    "${config_file}"
+    INSTALL_DESTINATION "lib/cmake/logvisor"
+)
+
+# Install the config files
+install(
+    FILES "${config_file}" "${version_config_file}"
+    DESTINATION ${config_install_dir}
+)

Config.cmake.in

@@ -0,0 +1,4 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/logvisorTargets.cmake")
+check_required_components(logvisor)

include/logvisor/logvisor.hpp

@@ -1,21 +1,26 @@
-#ifndef __LOG_VISOR_HPP__
-#define __LOG_VISOR_HPP__
+#pragma once
 
-#include <stdarg.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include <cstring>
+#include <cstdio>
+#include <cstdlib>
 #include <vector>
 #include <atomic>
 #include <memory>
 #include <mutex>
 
+#define FMT_STRING_ALIAS 1
+#define FMT_ENFORCE_COMPILE_STRING 1
+#include <fmt/format.h>
+
+#if defined(__SWITCH__) && !defined(LOGVISOR_NX_LM)
+#define LOGVISOR_NX_LM 0
+#endif
+
 extern "C" void logvisorBp();
 
-namespace logvisor
-{
+namespace logvisor {
 
-void logvisorAbort();
+[[noreturn]] void logvisorAbort();
 
 #if _WIN32 && UNICODE
 #define LOG_UCS2 1
@@ -27,32 +32,33 @@ extern bool XtermColor;
 /**
  * @brief Severity level for log messages
  */
-enum Level
-{
-    Info,        /**< Non-error informative message */
-    Warning,     /**< Non-error warning message */
-    Error,       /**< Recoverable error message */
-    Fatal        /**< Non-recoverable error message (throws exception) */
+enum Level {
+  Info,    /**< Non-error informative message */
+  Warning, /**< Non-error warning message */
+  Error,   /**< Recoverable error message */
+  Fatal    /**< Non-recoverable error message (throws exception) */
 };
 
 /**
  * @brief Backend interface for receiving app-wide log events
  */
-struct ILogger
-{
-    virtual ~ILogger() {}
-    virtual void report(const char* modName, Level severity,
-                        const char* format, va_list ap)=0;
-    virtual void report(const char* modName, Level severity,
-                        const wchar_t* format, va_list ap)=0;
-    virtual void reportSource(const char* modName, Level severity,
-                              const char* file, unsigned linenum,
-                              const char* format, va_list ap)=0;
-    virtual void reportSource(const char* modName, Level severity,
-                              const char* file, unsigned linenum,
-                              const wchar_t* format, va_list ap)=0;
+struct ILogger {
+  virtual ~ILogger() = default;
+  virtual void report(const char* modName, Level severity, fmt::string_view format, fmt::format_args args) = 0;
+  virtual void report(const char* modName, Level severity, fmt::wstring_view format, fmt::wformat_args args) = 0;
+  virtual void reportSource(const char* modName, Level severity, const char* file, unsigned linenum,
+                            fmt::string_view format, fmt::format_args args) = 0;
+  virtual void reportSource(const char* modName, Level severity, const char* file, unsigned linenum,
+                            fmt::wstring_view format, fmt::wformat_args args) = 0;
 };
 
+/**
+ * @brief Terminate all child processes
+ *
+ * Implicitly called on abort condition.
+ */
+void KillProcessTree();
+
 /**
  * @brief Assign calling thread a descriptive name
  * @param name Descriptive thread name
@@ -87,18 +93,16 @@ extern std::atomic_uint_fast64_t FrameIndex;
  *
  * Ensures logging streams aren't written concurrently
  */
-struct LogMutex
-{
-    bool enabled = true;
-    std::recursive_mutex mutex;
-    ~LogMutex() { enabled = false; }
-    std::unique_lock<std::recursive_mutex> lock()
-    {
-        if (enabled)
-            return std::unique_lock<std::recursive_mutex>(mutex);
-        else
-            return std::unique_lock<std::recursive_mutex>();
-    }
+struct LogMutex {
+  bool enabled = true;
+  std::recursive_mutex mutex;
+  ~LogMutex() { enabled = false; }
+  std::unique_lock<std::recursive_mutex> lock() {
+    if (enabled)
+      return std::unique_lock<std::recursive_mutex>(mutex);
+    else
+      return std::unique_lock<std::recursive_mutex>();
+  }
 };
 extern LogMutex _LogMutex;
 
@@ -106,15 +110,20 @@ extern LogMutex _LogMutex;
  * @brief Take a centralized lock for the logging output stream(s)
  * @return RAII mutex lock
  */
-static inline std::unique_lock<std::recursive_mutex> LockLog()
-{
-    return _LogMutex.lock();
-}
+inline std::unique_lock<std::recursive_mutex> LockLog() { return _LogMutex.lock(); }
+
+extern uint64_t _LogCounter;
+
+/**
+ * @brief Get current count of logging events
+ * @return Log Count
+ */
+inline uint64_t GetLogCounter() { return _LogCounter; }
 
 /**
  * @brief Restore centralized logger vector to default state (silent operation)
  */
-static inline void UnregisterLoggers() {MainLoggers.clear();}
+inline void UnregisterLoggers() { MainLoggers.clear(); }
 
 /**
  * @brief Construct and register a real-time console logger singleton
@@ -157,86 +166,141 @@ void RegisterFileLogger(const wchar_t* filepath);
 #endif
 
 /**
- * @brief This is constructed per-subsystem in a locally centralized fashon
+ * @brief This is constructed per-subsystem in a locally centralized fashion
  */
-class Module
-{
-    const char* m_modName;
+class Module {
+  const char* m_modName;
+
+  template <typename Char>
+  void _vreport(Level severity, fmt::basic_string_view<Char> format,
+                fmt::basic_format_args<fmt::buffer_context<Char>> args) {
+    auto lk = LockLog();
+    ++_LogCounter;
+    if (severity == Fatal)
+      RegisterConsoleLogger();
+    for (auto& logger : MainLoggers)
+      logger->report(m_modName, severity, format, args);
+    if (severity == Error || severity == Fatal)
+      logvisorBp();
+    if (severity == Fatal)
+      logvisorAbort();
+    else if (severity == Error)
+      ++ErrorCount;
+  }
+
+  template <typename Char>
+  void _vreportSource(Level severity, const char* file, unsigned linenum, fmt::basic_string_view<Char> format,
+                      fmt::basic_format_args<fmt::buffer_context<Char>> args) {
+    auto lk = LockLog();
+    ++_LogCounter;
+    if (severity == Fatal)
+      RegisterConsoleLogger();
+    for (auto& logger : MainLoggers)
+      logger->reportSource(m_modName, severity, file, linenum, format, args);
+    if (severity == Error || severity == Fatal)
+      logvisorBp();
+    if (severity == Fatal)
+      logvisorAbort();
+    else if (severity == Error)
+      ++ErrorCount;
+  }
+
 public:
-    Module(const char* modName) : m_modName(modName) {}
+  constexpr Module(const char* modName) : m_modName(modName) {}
 
-    /**
-     * @brief Route new log message to centralized ILogger
-     * @param severity Level of log report severity
-     * @param format Standard printf-style format string
-     */
-    template <typename CharType>
-    inline void report(Level severity, const CharType* format, ...)
-    {
-        if (MainLoggers.empty() && severity != Level::Fatal)
-            return;
-        va_list ap;
-        va_start(ap, format);
-        report(severity, format, ap);
-        va_end(ap);
-    }
+  /**
+   * @brief Route new log message to centralized ILogger
+   * @param severity Level of log report severity
+   * @param format fmt-style format string
+   */
+  template <typename S, typename... Args, typename Char = fmt::char_t<S>>
+  void report(Level severity, const S& format, Args&&... args) {
+    if (MainLoggers.empty() && severity != Level::Fatal)
+      return;
+    _vreport(severity, fmt::to_string_view<Char>(format),
+             fmt::basic_format_args<fmt::buffer_context<Char>>(
+                 fmt::internal::make_args_checked<Args...>(format, std::forward<Args>(args)...)));
+  }
 
-    template <typename CharType>
-    inline void report(Level severity, const CharType* format, va_list ap)
-    {
-        auto lk = LockLog();
-        for (auto& logger : MainLoggers)
-        {
-            va_list apc;
-            va_copy(apc, ap);
-            logger->report(m_modName, severity, format, apc);
-            va_end(apc);
-        }
-        if (severity == Error || severity == Fatal)
-            logvisorBp();
-        if (severity == Fatal)
-            logvisorAbort();
-        else if (severity == Error)
-            ++ErrorCount;
-    }
+  template <typename Char>
+  void vreport(Level severity, fmt::basic_string_view<Char> format,
+               fmt::basic_format_args<fmt::buffer_context<Char>> args) {
+    if (MainLoggers.empty() && severity != Level::Fatal)
+      return;
+    _vreport(severity, format, args);
+  }
 
-    /**
-     * @brief Route new log message with source info to centralized ILogger
-     * @param severity Level of log report severity
-     * @param file Source file name from __FILE__ macro
-     * @param linenum Source line number from __LINE__ macro
-     * @param format Standard printf-style format string
-     */
-    template <typename CharType>
-    inline void reportSource(Level severity, const char* file, unsigned linenum, const CharType* format, ...)
-    {
-        if (MainLoggers.empty() && severity != Level::Fatal)
-            return;
-        va_list ap;
-        va_start(ap, format);
-        reportSource(severity, file, linenum, format, ap);
-        va_end(ap);
-    }
+  /**
+   * @brief Route new log message with source info to centralized ILogger
+   * @param severity Level of log report severity
+   * @param file Source file name from __FILE__ macro
+   * @param linenum Source line number from __LINE__ macro
+   * @param format fmt-style format string
+   */
+  template <typename S, typename... Args, typename Char = fmt::char_t<S>>
+  void reportSource(Level severity, const char* file, unsigned linenum, const S& format, Args&&... args) {
+    if (MainLoggers.empty() && severity != Level::Fatal)
+      return;
+    _vreportSource(severity, file, linenum, fmt::to_string_view<Char>(format),
+                   fmt::basic_format_args<fmt::buffer_context<Char>>(
+                       fmt::internal::make_args_checked<Args...>(format, std::forward<Args>(args)...)));
+  }
 
-    template <typename CharType>
-    inline void reportSource(Level severity, const char* file, unsigned linenum, const CharType* format, va_list ap)
-    {
-        auto lk = LockLog();
-        for (auto& logger : MainLoggers)
-        {
-            va_list apc;
-            va_copy(apc, ap);
-            logger->reportSource(m_modName, severity, file, linenum, format, apc);
-            va_end(apc);
-        }
-
-        if (severity == Fatal)
-            logvisorAbort();
-        else if (severity == Error)
-            ++ErrorCount;
-    }
+  template <typename Char>
+  void vreportSource(Level severity, const char* file, unsigned linenum, fmt::basic_string_view<Char> format,
+                     fmt::basic_format_args<fmt::buffer_context<Char>> args) {
+    if (MainLoggers.empty() && severity != Level::Fatal)
+      return;
+    _vreportSource(severity, file, linenum, format, args);
+  }
 };
 
+#define FMT_CUSTOM_FORMATTER(tp, fmtstr, ...) \
+namespace fmt { \
+template <> \
+struct formatter<tp, char> { \
+  template <typename ParseContext> \
+  constexpr auto parse(ParseContext &ctx) { return ctx.begin(); } \
+  template <typename FormatContext> \
+  auto format(const tp &obj, FormatContext &ctx) { \
+    return format_to(ctx.out(), FMT_STRING(fmtstr), __VA_ARGS__); \
+  } \
+}; \
+template <> \
+struct formatter<tp, wchar_t> { \
+  template <typename ParseContext> \
+  constexpr auto parse(ParseContext &ctx) { return ctx.begin(); } \
+  template <typename FormatContext> \
+  auto format(const tp &obj, FormatContext &ctx) { \
+    return format_to(ctx.out(), FMT_STRING(L##fmtstr), __VA_ARGS__); \
+  } \
+}; \
+template <> \
+struct formatter<tp, char16_t> { \
+  template <typename ParseContext> \
+  constexpr auto parse(ParseContext &ctx) { return ctx.begin(); } \
+  template <typename FormatContext> \
+  auto format(const tp &obj, FormatContext &ctx) { \
+    return format_to(ctx.out(), FMT_STRING(u##fmtstr), __VA_ARGS__); \
+  } \
+}; \
+template <> \
+struct formatter<tp, char32_t> { \
+  template <typename ParseContext> \
+  constexpr auto parse(ParseContext &ctx) { return ctx.begin(); } \
+  template <typename FormatContext> \
+  auto format(const tp &obj, FormatContext &ctx) { \
+    return format_to(ctx.out(), FMT_STRING(U##fmtstr), __VA_ARGS__); \
+  } \
+}; \
 }
 
-#endif // __LOG_VISOR_HPP__
+} // namespace logvisor
+
+template <typename S, typename... Args, typename Char = fmt::char_t<S>>
+void quicklog(const S& format, Args&&... args) {
+  logvisor::MainLoggers[0]->report(
+      "quick", logvisor::Info, fmt::to_string_view<Char>(format),
+      fmt::basic_format_args<fmt::buffer_context<Char>>(
+          fmt::internal::make_args_checked<Args...>(format, std::forward<Args>(args)...)));
+}