1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "debug.h"
6
7#include <stdlib.h>
8#include <iostream>
9#include <string>
10
11namespace relocation_packer {
12
13// Construct a new message logger.  Prints if level is less than or equal to
14// the level set with SetVerbose() and predicate is true.
15Logger::Logger(Severity severity, int level, bool predicate) {
16  severity_ = severity;
17  level_ = level;
18  predicate_ = predicate;
19}
20
21// On destruction, flush and print the strings accumulated.  Abort if FATAL.
22Logger::~Logger() {
23  if (predicate_) {
24    if (level_ <= max_level_) {
25      std::ostream* log = severity_ == INFO ? info_stream_ : error_stream_;
26      std::string tag;
27      switch (severity_) {
28        case INFO: tag = "INFO"; break;
29        case WARNING: tag = "WARNING"; break;
30        case ERROR: tag = "ERROR"; break;
31        case FATAL: tag = "FATAL"; break;
32      }
33      stream_.flush();
34      *log << tag << ": " << stream_.str() << std::endl;
35    }
36    if (severity_ == FATAL)
37      abort();
38  }
39}
40
41// Reset to initial state.
42void Logger::Reset() {
43  max_level_ = -1;
44  info_stream_ = &std::cout;
45  error_stream_ = &std::cerr;
46}
47
48// Verbosity.  Not thread-safe.
49int Logger::max_level_ = -1;
50
51// Logging streams.  Not thread-safe.
52std::ostream* Logger::info_stream_ = &std::cout;
53std::ostream* Logger::error_stream_ = &std::cerr;
54
55}  // namespace relocation_packer
56