trace.cc revision 10475
1/* 2 * Copyright (c) 2014 ARM Limited 3 * All rights reserved 4 * 5 * Copyright (c) 2001-2006 The Regents of The University of Michigan 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are 10 * met: redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer; 12 * redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution; 15 * neither the name of the copyright holders nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * Authors: Nathan Binkert 32 * Steve Reinhardt 33 * Andrew Bardsley 34 */ 35 36#include <cctype> 37#include <fstream> 38#include <iostream> 39#include <sstream> 40#include <string> 41 42#include "base/misc.hh" 43#include "base/output.hh" 44#include "base/str.hh" 45#include "base/trace.hh" 46 47const std::string &name() 48{ 49 static const std::string default_name("global"); 50 51 return default_name; 52} 53 54namespace Trace 55{ 56 57bool enabled = false; 58 59// This variable holds the output logger for debug information. Other 60// than setting up/redirecting this logger, do *NOT* reference this 61// directly 62 63Logger *debug_logger = NULL; 64 65Logger * 66getDebugLogger() 67{ 68 /* Set a default logger to cerr when no other logger is set */ 69 if (!debug_logger) 70 debug_logger = new OstreamLogger(std::cerr); 71 72 return debug_logger; 73} 74 75std::ostream & 76output() 77{ 78 return getDebugLogger()->getOstream(); 79} 80 81void 82setDebugLogger(Logger *logger) 83{ 84 if (!logger) 85 warn("Trying to set debug logger to NULL\n"); 86 else 87 debug_logger = logger; 88} 89 90ObjectMatch ignore; 91 92void 93Logger::dump(Tick when, const std::string &name, const void *d, int len) 94{ 95 if (!name.empty() && ignore.match(name)) 96 return; 97 98 const char *data = static_cast<const char *>(d); 99 int c, i, j; 100 101 for (i = 0; i < len; i += 16) { 102 std::ostringstream line; 103 104 ccprintf(line, "%08x ", i); 105 c = len - i; 106 if (c > 16) c = 16; 107 108 for (j = 0; j < c; j++) { 109 ccprintf(line, "%02x ", data[i + j] & 0xff); 110 if ((j & 0xf) == 7 && j > 0) 111 ccprintf(line, " "); 112 } 113 114 for (; j < 16; j++) 115 ccprintf(line, " "); 116 ccprintf(line, " "); 117 118 for (j = 0; j < c; j++) { 119 int ch = data[i + j] & 0x7f; 120 ccprintf(line, "%c", (char)(isprint(ch) ? ch : ' ')); 121 } 122 123 ccprintf(line, "\n"); 124 logMessage(when, name, line.str()); 125 126 if (c < 16) 127 break; 128 } 129} 130 131void 132OstreamLogger::logMessage(Tick when, const std::string &name, 133 const std::string &message) 134{ 135 if (!name.empty() && ignore.match(name)) 136 return; 137 138 if (when != MaxTick) 139 ccprintf(stream, "%7d: ", when); 140 141 if (!name.empty()) 142 stream << name << ": "; 143 144 stream << message; 145 stream.flush(); 146} 147 148} // namespace Trace 149