src/base/misc.cc

   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/misc.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
  54
  55 Logger &
  56 Logger::get(LogLevel ll)
  57 {
  58     static std::array<Logger *, NUM_LOG_LEVELS> loggers{{
  59         new ExitLogger(std::cerr, "panic"),
  60         new ExitLogger(std::cerr, "fatal"),
  61         new Logger(std::cerr, "warn"),
  62         new Logger(std::cerr, "info"),
  63         new Logger(std::cerr, "hack"),
  64     }};
  65
  66     return *loggers[ll];
  67 }
  68
  69 void
  70 Logger::setLevel(LogLevel ll)
  71 {
  72     for (int i = 0; i < NUM_LOG_LEVELS; ++i)
  73         get(LogLevel(i)).enabled = (i <= ll);
  74 }
  75
  76 static void
  77 newline_if_needed(std::ostream &stream, const char *format)
  78 {
  79     const size_t format_len(strlen(format));
  80
  81     switch (format_len ? format[format_len - 1] : '\0') {
  82       case '\n':
  83       case '\r':
  84         break;
  85       default:
  86         stream << std::endl;
  87     }
  88 }
  89
  90 Logger::Logger(std::ostream &_stream, const char *_prefix)
  91     : enabled(true), verbose(false), stream(_stream), prefix(_prefix)
  92 {
  93 }
  94
  95 void
  96 Logger::printEpilogue(const char *func, const char *file, int line,
  97                         const char *format)
  98 {
  99     newline_if_needed(stream, format);
 100
 101     if (verbose) {
 102         ccprintf(stream, " @ tick %d\n[%s:%s, line %d]\n",
 103                  curTick(), func, file, line);
 104     }
 105 }
 106
 107 void
 108 ExitLogger::printEpilogue(const char *func, const char *file, int line,
 109                             const char *format)
 110 {
 111     Logger::printEpilogue(func, file, line, format);
 112
 113     ccprintf(stream, "Memory Usage: %ld KBytes\n", memUsage());
 114 }