| namespace unify { | |
| uint64_t wall_clock_ns() { | |
| static const auto start = std::chrono::steady_clock::now(); | |
| return uint64_t(std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::steady_clock::now() - start).count()); | |
| } | |
| static LogLevel g_min_level = LogLevel::Info; | |
| static std::mutex g_log_mutex; | |
| void set_log_level(LogLevel min_level) { g_min_level = min_level; } | |
| void log_message(LogLevel level, const char* category, const char* fmt, ...) { | |
| if (level < g_min_level) return; | |
| static const char* names[] = {"DEBUG", "INFO", "WARN", "ERROR"}; | |
| char buf[1024]; | |
| va_list args; | |
| va_start(args, fmt); | |
| vsnprintf(buf, sizeof buf, fmt, args); | |
| va_end(args); | |
| std::lock_guard<std::mutex> lock(g_log_mutex); | |
| std::fprintf(level >= LogLevel::Warn ? stderr : stdout, "[%s] [%s] %s\n", names[int(level)], category, buf); | |
| } | |
| } // namespace unify | |