logging.cc revision 12334:e0ab29a34764 
1/*
2 * Copyright (c) 2014, 2017 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2002-2005 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Nathan Binkert
41 *          Andreas Sandberg
42 */
43
44#include "base/logging.hh"
45
46#include <array>
47
48#include "base/hostinfo.hh"
49#include "base/output.hh"
50#include "base/trace.hh"
51#include "base/types.hh"
52#include "sim/core.hh"
53
54void
55Logger::setLevel(LogLevel ll)
56{
57    for (int i = 0; i < NUM_LOG_LEVELS; ++i)
58        get(LogLevel(i)).enabled = (i <= ll);
59}
60
61static void
62newline_if_needed(std::ostream &stream, const char *format)
63{
64    const size_t format_len(strlen(format));
65
66    switch (format_len ? format[format_len - 1] : '\0') {
67      case '\n':
68      case '\r':
69        break;
70      default:
71        stream << std::endl;
72    }
73}
74
75Logger::Logger(std::ostream &_stream, const char *_prefix)
76    : enabled(true), verbose(false), stream(_stream), prefix(_prefix)
77{
78}
79
80void
81Logger::printEpilogue(const char *func, const char *file, int line,
82                        const char *format)
83{
84    newline_if_needed(stream, format);
85
86    if (verbose) {
87        ccprintf(stream, " @ tick %d\n[%s:%s, line %d]\n",
88                 curTick(), func, file, line);
89    }
90}
91
92class ExitLogger : public Logger
93{
94  public:
95    using Logger::Logger;
96
97    void printEpilogue(const char *func, const char *file, int line,
98                       const char *format) override;
99};
100
101void
102ExitLogger::printEpilogue(const char *func, const char *file, int line,
103                            const char *format)
104{
105    Logger::printEpilogue(func, file, line, format);
106
107    ccprintf(stream, "Memory Usage: %ld KBytes\n", memUsage());
108}
109
110Logger &
111Logger::get(LogLevel ll)
112{
113    static std::array<Logger *, NUM_LOG_LEVELS> loggers{{
114        new ExitLogger(std::cerr, "panic"),
115        new ExitLogger(std::cerr, "fatal"),
116        new Logger(std::cerr, "warn"),
117        new Logger(std::cerr, "info"),
118        new Logger(std::cerr, "hack"),
119    }};
120
121    return *loggers[ll];
122}
123