lokinet/llarp/util/logging/logger_internal.hpp
Jason Rhinelander d588f777c7
Fix logging of std::byte values
They were failing to compile if output because implicit integer
promotion doesn't work for std::byte's (but rather needs an explicit
std::to_integer call).
2021-04-19 06:58:36 -04:00

65 lines
1.6 KiB
C++

#pragma once
#include <llarp/util/time.hpp>
#include <ctime>
#include <sstream>
#include <llarp/util/thread/threading.hpp>
#include <type_traits>
namespace llarp
{
/** internal */
// true if T is the same as any of V...
template <typename T, typename... V>
constexpr bool is_same_any_v = (std::is_same_v<T, V> || ...);
template <typename TArg, typename... TArgs>
void
LogAppend(std::ostringstream& ss, TArg&& arg, TArgs&&... args) noexcept
{
// If you are logging a char/unsigned char/uint8_t then promote it to an integer so that we
// print numeric values rather than std::ostream's default of printing it as a raw char.
using PlainT = std::remove_reference_t<TArg>;
if constexpr (is_same_any_v<PlainT, char, unsigned char, signed char, uint8_t>)
ss << +std::forward<TArg>(arg); // Promote to int
else if constexpr (std::is_same_v<PlainT, std::byte>)
ss << std::to_integer<int>(arg);
else
ss << std::forward<TArg>(arg);
if constexpr (sizeof...(TArgs))
LogAppend(ss, std::forward<TArgs>(args)...);
}
inline std::string
thread_id_string()
{
auto tid = std::this_thread::get_id();
std::hash<std::thread::id> h;
uint16_t id = h(tid) % 1000;
#if defined(ANDROID)
char buff[8] = {0};
snprintf(buff, sizeof(buff), "%u", id);
return buff;
#else
return std::to_string(id);
#endif
}
struct log_timestamp
{
const char* format;
const llarp_time_t now;
const llarp_time_t delta;
log_timestamp();
explicit log_timestamp(const char* fmt);
};
std::ostream&
operator<<(std::ostream& out, const log_timestamp& ts);
} // namespace llarp