Merge "Logging: Add timestamp to logging header in x86"

#pragma once

#include <stdlib.h>

#include <cstdlib>

#ifndef LOG_TAG

#define LOG_TAG "bt"

#else

/* syslog didn't work well here since we would be redefining LOG_DEBUG. */

#include <stdio.h>

#include <chrono>

#include <cstdio>

#include <ctime>

#define LOGWRAPPER(fmt, args...)                                                                                      \

  fprintf(stderr, "%s - %s:%d - %s: " fmt "\n", LOG_TAG, __FILE__, __LINE__, __func__, ##args)

  do {                                                                                                                \

    auto now = std::chrono::system_clock::now();                                                                      \

    auto now_ms = std::chrono::time_point_cast<std::chrono::milliseconds>(now);                                       \

    auto now_t = std::chrono::system_clock::to_time_t(now);                                                           \

    /* YYYY-MM-DD_HH:MM:SS.sss is 23 byte long, plus 1 for null terminator */                                         \

    char buf[24];                                                                                                     \

    auto l = std::strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", std::localtime(&now_t));                            \

    snprintf(buf + l, sizeof(buf) - l, ".%03u", static_cast<unsigned int>(now_ms.time_since_epoch().count() % 1000)); \

    fprintf(stderr, "%s %s - %s:%d - %s: " fmt "\n", buf, LOG_TAG, __FILE__, __LINE__, __func__, ##args);             \

  } while (false)

#define LOG_VERBOSE(...) LOGWRAPPER(__VA_ARGS__)

#define LOG_DEBUG(...) LOGWRAPPER(__VA_ARGS__)