p2pool/src/log.h

418 lines
10 KiB
C++

/*
* This file is part of the Monero P2Pool <https://github.com/SChernykh/p2pool>
* Copyright (c) 2021 SChernykh <https://github.com/SChernykh>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
namespace p2pool {
namespace log {
extern int GLOBAL_LOG_LEVEL;
constexpr int MAX_GLOBAL_LOG_LEVEL = 6;
enum class Severity {
Info,
Warning,
Error,
};
struct Stream
{
enum params : int { BUF_SIZE = 1024 - 1 };
explicit FORCEINLINE Stream(char* buf) : m_pos(0), m_numberWidth(1), m_buf(buf), m_bufSize(BUF_SIZE) {}
FORCEINLINE Stream(char* buf, size_t size) : m_pos(0), m_numberWidth(1), m_buf(buf), m_bufSize(static_cast<int>(size)) {}
template<typename T>
struct Entry
{
static constexpr void no() { static_assert(not_implemented<T>::value, "Logging for this type is not implemented"); }
static constexpr void put(const T&, Stream*) { no(); }
static constexpr void put(T&&, Stream*) { no(); }
};
template<typename T>
FORCEINLINE Stream& operator<<(T& data)
{
Entry<typename std::remove_cv<T>::type>::put(data, this);
return *this;
}
template<typename T>
FORCEINLINE Stream& operator<<(T&& data)
{
Entry<T>::put(std::move(data), this);
return *this;
}
template<typename T, int base = 10>
NOINLINE void writeInt(T data)
{
static_assert(1 < base && base <= 64, "Invalid base");
const T data_with_sign = data;
data = abs(data);
const bool negative = (data != data_with_sign);
char buf[32];
size_t k = sizeof(buf);
int w = m_numberWidth;
do {
buf[--k] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+/"[data % base];
data /= base;
--w;
} while ((data > 0) || (w > 0));
if (negative) {
buf[--k] = '-';
}
writeBuf(buf + k, sizeof(buf) - k);
}
FORCEINLINE void writeBuf(const char* buf, size_t n0)
{
const int n = static_cast<int>(n0);
const int pos = m_pos;
if (pos + n > m_bufSize) {
return;
}
memcpy(m_buf + pos, buf, n);
m_pos = pos + n;
}
FORCEINLINE int getNumberWidth() const { return m_numberWidth; }
FORCEINLINE void setNumberWidth(int width) { m_numberWidth = width; }
NOINLINE void writeCurrentTime();
int m_pos;
int m_numberWidth;
char* m_buf;
int m_bufSize;
};
struct Writer : public Stream
{
explicit NOINLINE Writer(Severity severity);
NOINLINE ~Writer();
char m_stackBuf[BUF_SIZE + 1];
};
#define COLOR_ENTRY(x, s) \
struct x{}; \
template<> struct Stream::Entry<x> { static FORCEINLINE void put(x&&, Stream* wrapper) { wrapper->writeBuf(s, sizeof(s) - 1); } };
COLOR_ENTRY(NoColor, "\x1b[0m")
COLOR_ENTRY(Black, "\x1b[0;30m")
COLOR_ENTRY(Red, "\x1b[0;31m")
COLOR_ENTRY(Green, "\x1b[0;32m")
COLOR_ENTRY(Yellow, "\x1b[0;33m")
COLOR_ENTRY(Blue, "\x1b[0;34m")
COLOR_ENTRY(Magenta, "\x1b[0;35m")
COLOR_ENTRY(Cyan, "\x1b[0;36m")
COLOR_ENTRY(White, "\x1b[0;37m")
COLOR_ENTRY(Gray, "\x1b[0;90m")
COLOR_ENTRY(LightRed, "\x1b[0;91m")
COLOR_ENTRY(LightGreen, "\x1b[0;92m")
COLOR_ENTRY(LightYellow, "\x1b[0;93m")
COLOR_ENTRY(LightBlue, "\x1b[0;94m")
COLOR_ENTRY(LightMagenta, "\x1b[0;95m")
COLOR_ENTRY(LightCyan, "\x1b[0;96m")
#undef COLOR_ENTRY
template<size_t N> struct Stream::Entry<char[N]>
{
static FORCEINLINE void put(const char (&data)[N], Stream* wrapper) { wrapper->writeBuf(data, N - 1); }
};
template<> struct Stream::Entry<const char*>
{
static FORCEINLINE void put(const char* data, Stream* wrapper) { wrapper->writeBuf(data, strlen(data)); }
};
template<> struct Stream::Entry<char*>
{
static FORCEINLINE void put(char* data, Stream* wrapper) { wrapper->writeBuf(data, strlen(data)); }
};
template<> struct Stream::Entry<char>
{
static FORCEINLINE void put(char c, Stream* wrapper) { wrapper->writeBuf(&c, 1); }
};
#define INT_ENTRY(x) \
template<> struct Stream::Entry<x> { static FORCEINLINE void put(x data, Stream* wrapper) { wrapper->writeInt(data); } };
INT_ENTRY(int8_t)
INT_ENTRY(int16_t)
INT_ENTRY(int32_t)
INT_ENTRY(int64_t)
INT_ENTRY(uint8_t)
INT_ENTRY(uint16_t)
INT_ENTRY(uint32_t)
INT_ENTRY(uint64_t)
#ifdef __clang__
INT_ENTRY(unsigned long)
#endif
#undef INT_ENTRY
template<typename T, int base>
struct BasedValue
{
explicit FORCEINLINE BasedValue(T value) : m_value(value) {}
T m_value;
};
template<typename T, int base>
struct Stream::Entry<BasedValue<T, base>>
{
static FORCEINLINE void put(BasedValue<T, base>&& data, Stream* wrapper)
{
wrapper->writeInt<T, base>(data.m_value);
}
};
template<typename T> FORCEINLINE BasedValue<T, 16> Hex(T value) { return BasedValue<T, 16>(value); }
template<> struct Stream::Entry<double>
{
static NOINLINE void put(double x, Stream* wrapper)
{
char buf[16];
int n = snprintf(buf, sizeof(buf), "%.3f", x);
if (n > 0) {
if (n > static_cast<int>(sizeof(buf)) - 1) {
n = static_cast<int>(sizeof(buf)) - 1;
}
wrapper->writeBuf(buf, n);
}
}
};
template<> struct Stream::Entry<float>
{
static FORCEINLINE void put(float x, Stream* wrapper) { Stream::Entry<double>::put(x, wrapper); }
};
template<> struct Stream::Entry<hash>
{
static NOINLINE void put(const hash& data, Stream* wrapper)
{
char buf[sizeof(data) * 2];
for (size_t i = 0; i < sizeof(data.h); ++i) {
buf[i * 2 + 0] = "0123456789abcdef"[data.h[i] >> 4];
buf[i * 2 + 1] = "0123456789abcdef"[data.h[i] & 15];
}
wrapper->writeBuf(buf, sizeof(buf));
}
};
template<> struct Stream::Entry<difficulty_type>
{
static NOINLINE void put(const difficulty_type& data, Stream* wrapper)
{
char buf[40];
size_t k = sizeof(buf);
int w = wrapper->m_numberWidth;
uint64_t a = data.lo;
uint64_t b = data.hi;
do {
// 2^64 % 10 = 6, so (b % 10) is multiplied by 6
static constexpr uint64_t mul6[10] = { 0, 6, 2, 8, 4, 0, 6, 2, 8, 4 };
buf[--k] = "01234567890123456789"[a % 10 + mul6[b % 10]];
uint64_t r;
a = udiv128(b % 10, a, 10, &r);
b /= 10;
--w;
} while ((a > 0) || (b > 0) || (w > 0));
wrapper->writeBuf(buf + k, sizeof(buf) - k);
}
};
struct const_buf
{
FORCEINLINE const_buf(const char* data, size_t size) : m_data(data), m_size(size) {}
const char* m_data;
size_t m_size;
};
template<> struct log::Stream::Entry<const_buf>
{
static FORCEINLINE void put(const_buf&& buf, Stream* wrapper) { wrapper->writeBuf(buf.m_data, buf.m_size); }
};
struct hex_buf
{
FORCEINLINE hex_buf(const uint8_t* data, size_t size) : m_data(data), m_size(size) {}
const uint8_t* m_data;
size_t m_size;
};
template<> struct log::Stream::Entry<hex_buf>
{
static FORCEINLINE void put(const hex_buf& value, Stream* wrapper)
{
for (size_t i = 0; i < value.m_size; ++i) {
char buf[2];
buf[0] = "0123456789abcdef"[value.m_data[i] >> 4];
buf[1] = "0123456789abcdef"[value.m_data[i] & 15];
wrapper->writeBuf(buf, sizeof(buf));
}
}
};
template<> struct log::Stream::Entry<std::string>
{
static FORCEINLINE void put(const std::string& value, Stream* wrapper) { wrapper->writeBuf(value.c_str(), value.length()); }
};
struct Hashrate
{
explicit FORCEINLINE Hashrate(uint64_t data) : m_data(data) {}
uint64_t m_data;
};
template<> struct log::Stream::Entry<Hashrate>
{
static NOINLINE void put(Hashrate&& value, Stream* wrapper)
{
const double x = static_cast<double>(value.m_data);
static constexpr const char* units[] = { "H/s", "KH/s", "MH/s", "GH/s", "TH/s", "PH/s", "EH/s" };
int n;
char buf[32];
if (value.m_data < 1000) {
n = snprintf(buf, sizeof(buf), "%u %s", static_cast<uint32_t>(value.m_data), units[0]);
}
else {
size_t k = 0;
double magnitude = 1.0;
while ((x >= magnitude * 1e3) && (k < array_size(units) - 1)) {
magnitude *= 1e3;
++k;
}
n = snprintf(buf, sizeof(buf), "%.3f %s", x / magnitude, units[k]);
}
if (n > 0) {
if (n > static_cast<int>(sizeof(buf)) - 1) {
n = static_cast<int>(sizeof(buf)) - 1;
}
wrapper->writeBuf(buf, n);
}
}
};
struct XMRAmount
{
explicit FORCEINLINE XMRAmount(uint64_t data) : m_data(data) {}
uint64_t m_data;
};
template<> struct log::Stream::Entry<XMRAmount>
{
static NOINLINE void put(XMRAmount&& value, Stream* wrapper)
{
constexpr uint64_t denomination = 1000000000000ULL;
const int w = wrapper->getNumberWidth();
wrapper->setNumberWidth(1);
*wrapper << value.m_data / denomination << '.';
wrapper->setNumberWidth(12);
*wrapper << value.m_data % denomination << " XMR";
wrapper->setNumberWidth(w);
}
};
template<> struct log::Stream::Entry<NetworkType>
{
static NOINLINE void put(const NetworkType& value, Stream* wrapper)
{
switch (value) {
case NetworkType::Invalid: *wrapper << "invalid"; break;
case NetworkType::Mainnet: *wrapper << "mainnet"; break;
case NetworkType::Testnet: *wrapper << "testnet"; break;
case NetworkType::Stagenet: *wrapper << "stagenet"; break;
}
}
};
namespace {
template<log::Severity severity> void apply_severity(log::Stream&);
template<> FORCEINLINE void apply_severity<log::Severity::Info>(log::Stream& s) { s << log::NoColor(); }
template<> FORCEINLINE void apply_severity<log::Severity::Warning>(log::Stream& s) { s << log::Yellow(); }
template<> FORCEINLINE void apply_severity<log::Severity::Error>(log::Stream& s) { s << log::Red(); }
}
#define CONCAT(a, b) CONCAT2(a, b)
#define CONCAT2(a, b) a##b
#ifdef P2POOL_LOG_DISABLE
#define LOGINFO(level, ...)
#define LOGWARN(level, ...)
#define LOGERR(level, ...)
#else
#define LOG(level, severity, ...) \
do { \
if (level <= log::GLOBAL_LOG_LEVEL) { \
log::Writer CONCAT(log_wrapper_, __LINE__)(severity); \
CONCAT(log_wrapper_, __LINE__) << log::Gray() << log_category_prefix; \
log::apply_severity<severity>(CONCAT(log_wrapper_, __LINE__)); \
CONCAT(log_wrapper_, __LINE__) << __VA_ARGS__ << log::NoColor(); \
} \
} while (0)
#define LOGINFO(level, ...) LOG(level, log::Severity::Info, __VA_ARGS__)
#define LOGWARN(level, ...) LOG(level, log::Severity::Warning, __VA_ARGS__)
#define LOGERR(level, ...) LOG(level, log::Severity::Error, __VA_ARGS__)
#endif
void reopen();
void stop();
} // namespace log
} // namespace p2pool