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rocksdb/util/stderr_logger.h

45 lines
1.3 KiB

// Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#pragma once
#include <stdarg.h>
#include <stdio.h>
#include "port/sys_time.h"
#include "rocksdb/env.h"
namespace ROCKSDB_NAMESPACE {
// Prints logs to stderr for faster debugging
class StderrLogger : public Logger {
public:
explicit StderrLogger(const InfoLogLevel log_level = InfoLogLevel::INFO_LEVEL)
: Logger(log_level) {}
// Brings overloaded Logv()s into scope so they're not hidden when we override
// a subset of them.
using Logger::Logv;
virtual void Logv(const char* format, va_list ap) override {
const uint64_t thread_id = Env::Default()->GetThreadID();
port::TimeVal now_tv;
port::GetTimeOfDay(&now_tv, nullptr);
const time_t seconds = now_tv.tv_sec;
struct tm t;
port::LocalTimeR(&seconds, &t);
fprintf(stderr, "%04d/%02d/%02d-%02d:%02d:%02d.%06d %llx ",
t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min,
t.tm_sec, static_cast<int>(now_tv.tv_usec),
static_cast<long long unsigned int>(thread_id));
vfprintf(stderr, format, ap);
fprintf(stderr, "\n");
}
};
} // namespace ROCKSDB_NAMESPACE