src/base/trace.cc

   1 /*
   2  * Copyright (c) 2001-2006 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Nathan Binkert
  29  *          Steve Reinhardt
  30  */
  31
  32 #include <cctype>
  33 #include <fstream>
  34 #include <iostream>
  35 #include <string>
  36
  37 #include "base/misc.hh"
  38 #include "base/output.hh"
  39 #include "base/str.hh"
  40 #include "base/trace.hh"
  41 #include "base/varargs.hh"
  42
  43 using namespace std;
  44
  45 namespace Trace {
  46
  47 const string DefaultName("global");
  48 bool enabled = false;
  49
  50 //
  51 // This variable holds the output stream for debug information.  Other
  52 // than setting up/redirecting this stream, do *NOT* reference this
  53 // directly; use DebugOut() (see below) to access this stream for
  54 // output.
  55 //
  56 ostream *dprintf_stream = &cerr;
  57 ostream &
  58 output()
  59 {
  60     return *dprintf_stream;
  61 }
  62
  63 void
  64 setOutput(const string &filename)
  65 {
  66     dprintf_stream = simout.find(filename);
  67 }
  68
  69 ObjectMatch ignore;
  70
  71 void
  72 dprintf(Tick when, const std::string &name, const char *format,
  73         CPRINTF_DEFINITION)
  74 {
  75     if (!name.empty() && ignore.match(name))
  76         return;
  77
  78     std::ostream &os = *dprintf_stream;
  79
  80     string fmt = "";
  81     CPrintfArgsList args(VARARGS_ALLARGS);
  82
  83     if (!name.empty()) {
  84         fmt = "%s: " + fmt;
  85         args.push_front(name);
  86     }
  87
  88     if (when != (Tick)-1) {
  89         fmt = "%7d: " + fmt;
  90         args.push_front(when);
  91     }
  92
  93     fmt += format;
  94
  95     ccprintf(os, fmt.c_str(), args);
  96     os.flush();
  97 }
  98
  99 void
 100 dump(Tick when, const std::string &name, const void *d, int len)
 101 {
 102     if (!name.empty() && ignore.match(name))
 103         return;
 104
 105     std::ostream &os = *dprintf_stream;
 106
 107     string fmt = "";
 108     CPrintfArgsList args;
 109
 110     if (!name.empty()) {
 111         fmt = "%s: " + fmt;
 112         args.push_front(name);
 113     }
 114
 115     if (when != (Tick)-1) {
 116         fmt = "%7d: " + fmt;
 117         args.push_front(when);
 118     }
 119
 120     const char *data = static_cast<const char *>(d);
 121     int c, i, j;
 122     for (i = 0; i < len; i += 16) {
 123         ccprintf(os, fmt, args);
 124         ccprintf(os, "%08x  ", i);
 125         c = len - i;
 126         if (c > 16) c = 16;
 127
 128         for (j = 0; j < c; j++) {
 129             ccprintf(os, "%02x ", data[i + j] & 0xff);
 130             if ((j & 0xf) == 7 && j > 0)
 131                 ccprintf(os, " ");
 132         }
 133
 134         for (; j < 16; j++)
 135             ccprintf(os, "   ");
 136         ccprintf(os, "  ");
 137
 138         for (j = 0; j < c; j++) {
 139             int ch = data[i + j] & 0x7f;
 140             ccprintf(os, "%c", (char)(isprint(ch) ? ch : ' '));
 141         }
 142
 143         ccprintf(os, "\n");
 144
 145         if (c < 16)
 146             break;
 147     }
 148 }
 149
 150 } // namespace Trace