logFileStreamOutput.hpp revision 11209:c84a6ce067ad 
1/*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24#ifndef SHARE_VM_LOGGING_LOGFILESTREAMOUTPUT_HPP
25#define SHARE_VM_LOGGING_LOGFILESTREAMOUTPUT_HPP
26
27#include "logging/logDecorators.hpp"
28#include "logging/logOutput.hpp"
29#include "utilities/globalDefinitions.hpp"
30
31class LogDecorations;
32
33// Base class for all FileStream-based log outputs.
34class LogFileStreamOutput : public LogOutput {
35 protected:
36  FILE*               _stream;
37  size_t              _decorator_padding[LogDecorators::Count];
38
39  LogFileStreamOutput(FILE *stream) : _stream(stream) {
40    for (size_t i = 0; i < LogDecorators::Count; i++) {
41      _decorator_padding[i] = 0;
42    }
43  }
44
45  int write_decorations(const LogDecorations& decorations);
46
47 public:
48  virtual int write(const LogDecorations& decorations, const char* msg);
49  virtual int write(LogMessageBuffer::Iterator msg_iterator);
50};
51
52class LogStdoutOutput : public LogFileStreamOutput {
53  friend class LogOutput;
54 private:
55  static LogStdoutOutput _instance;
56  LogStdoutOutput() : LogFileStreamOutput(stdout) {
57    set_config_string("all=off");
58  }
59  virtual bool initialize(const char* options, outputStream* errstream) {
60    return false;
61  }
62 public:
63  virtual const char* name() const {
64    return "stdout";
65  }
66};
67
68class LogStderrOutput : public LogFileStreamOutput {
69  friend class LogOutput;
70 private:
71  static LogStderrOutput _instance;
72  LogStderrOutput() : LogFileStreamOutput(stderr) {
73    set_config_string("all=warning");
74  }
75  virtual bool initialize(const char* options, outputStream* errstream) {
76    return false;
77  }
78 public:
79  virtual const char* name() const {
80    return "stderr";
81  }
82};
83
84#endif // SHARE_VM_LOGGING_LOGFILESTREAMOUTPUT_HPP
85