ceph/src/rocksdb/util/stderr_logger.h

   1 //  Copyright (c) 2016-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under the BSD-style license found in the
   3 //  LICENSE file in the root directory of this source tree. An additional grant
   4 //  of patent rights can be found in the PATENTS file in the same directory.
   5
   6 #pragma once
   7
   8 #include <stdarg.h>
   9 #include <stdio.h>
  10
  11 #include "rocksdb/env.h"
  12
  13 namespace rocksdb {
  14
  15 // Prints logs to stderr for faster debugging
  16 class StderrLogger : public Logger {
  17  public:
  18   explicit StderrLogger(const InfoLogLevel log_level = InfoLogLevel::INFO_LEVEL)
  19       : Logger(log_level) {}
  20
  21   // Brings overloaded Logv()s into scope so they're not hidden when we override
  22   // a subset of them.
  23   using Logger::Logv;
  24
  25   virtual void Logv(const char* format, va_list ap) override {
  26     vfprintf(stderr, format, ap);
  27     fprintf(stderr, "\n");
  28   }
  29 };
  30
  31 }  // namespace rocksdb