Add console logger to replace original debug output.
Adam Gu
7 years ago
parent
bcfb1e4c92
commit
662b7c4112
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#include "webcc/logger.h"
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#if WEBCC_ENABLE_LOG
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#include <cassert>
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#include <cstdarg>
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#include <mutex>
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#include "boost/thread.hpp" // For thread ID.
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namespace webcc {
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////////////////////////////////////////////////////////////////////////////////
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static std::string GetThreadId() {
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boost::thread::id thread_id = boost::this_thread::get_id();
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std::stringstream ss;
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ss << thread_id;
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return ss.str();
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}
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////////////////////////////////////////////////////////////////////////////////
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static const char* kLevelNames[] = {
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"VERB", "INFO", "WARN", "ERRO", "FATA"
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};
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struct Logger {
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int level;
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int modes;
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std::mutex mutex;
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};
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// Global logger.
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static Logger g_logger{ VERB };
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////////////////////////////////////////////////////////////////////////////////
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void LogInit(int level, int modes) {
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g_logger.modes = modes;
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g_logger.level = level;
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}
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void LogWrite(int level, const char* file, int line, const char* format, ...) {
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assert(format != nullptr);
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if (g_logger.level > level) {
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return;
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}
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std::lock_guard<std::mutex> lock(g_logger.mutex);
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va_list va_ptr_console;
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va_start(va_ptr_console, format);
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fprintf(stderr,
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"%s, %5s, %24s, %4d, ",
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kLevelNames[level],
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GetThreadId().c_str(),
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file,
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line);
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vfprintf(stderr, format, va_ptr_console);
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fprintf(stderr, "\n");
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if ((g_logger.modes & FLUSH) == FLUSH) {
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fflush(stderr);
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}
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va_end(va_ptr_console);
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}
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} // namespace webcc
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#endif // WEBCC_ENABLE_LOG
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@ -0,0 +1,94 @@
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#ifndef WEBCC_LOGGER_H_
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#define WEBCC_LOGGER_H_
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// Simple console logger.
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namespace webcc {
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#if WEBCC_ENABLE_LOG
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enum LogLevel {
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VERB = 0,
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INFO,
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WARN,
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ERRO,
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FATA,
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};
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enum LogMode {
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FLUSH = 1,
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};
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void LogInit(int level, int modes);
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void LogWrite(int level, const char* file, int line, const char* format, ...);
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// Initialize the logger with a level.
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// E.g., LOG_INIT(ERRO, FLUSH)
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#define LOG_INIT(level, modes) LogInit(level, modes);
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#if (defined(WIN32) || defined(_WIN64))
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// See: https://stackoverflow.com/a/8488201
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#define __FILENAME__ strrchr("\\" __FILE__, '\\') + 1
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#define LOG_VERB(format, ...) \
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LogWrite(VERB, __FILENAME__, __LINE__, format, ##__VA_ARGS__);
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#define LOG_INFO(format, ...) \
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LogWrite(INFO, __FILENAME__, __LINE__, format, ##__VA_ARGS__);
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#define LOG_WARN(format, ...) \
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LogWrite(WARN, __FILENAME__, __LINE__, format, ##__VA_ARGS__);
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#define LOG_ERRO(format, ...) \
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LogWrite(ERRO, __FILENAME__, __LINE__, format, ##__VA_ARGS__);
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#define LOG_FATA(format, ...) \
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LogWrite(FATA, __FILENAME__, __LINE__, format, ##__VA_ARGS__);
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#else
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// See: https://stackoverflow.com/a/8488201
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#define __FILENAME__ strrchr("/" __FILE__, '/') + 1
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#define LOG_VERB(format, args...) \
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LogWrite(VERB, __FILENAME__, __LINE__, format, ##args);
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#define LOG_INFO(format, args...) \
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LogWrite(INFO, __FILENAME__, __LINE__, format, ##args);
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#define LOG_WARN(format, args...) \
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LogWrite(WARN, __FILENAME__, __LINE__, format, ##args);
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#define LOG_ERRO(format, args...) \
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LogWrite(ERRO, __FILENAME__, __LINE__, format, ##args);
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#define LOG_FATA(format, args...) \
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LogWrite(FATA, __FILENAME__, __LINE__, format, ##args);
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#endif // defined(WIN32) || defined(_WIN64)
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#else // WEBCC_ENABLE_LOG == 0
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#define LOG_INIT(level, modes)
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#if (defined(WIN32) || defined(_WIN64))
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#define LOG_VERB(format, ...)
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#define LOG_INFO(format, ...)
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#define LOG_WARN(format, ...)
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#define LOG_ERRO(format, ...)
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#define LOG_FATA(format, ...)
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#else
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#define LOG_VERB(format, args...)
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#define LOG_INFO(format, args...)
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#define LOG_WARN(format, args...)
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#define LOG_ERRO(format, args...)
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#define LOG_FATA(format, args...)
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#endif // defined(WIN32) || defined(_WIN64)
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#endif // WEBCC_ENABLE_LOG
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} // namespace webcc
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#endif // WEBCC_LOGGER_H_
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