src/log.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "log.h"
  21
  22 #include <map>
  23 #include <list>
  24 #include <sstream>
  25 #include <algorithm>
  26 #include "threads.h"
  27 #include "debug.h"
  28 #include "gettime.h"
  29 #include "porting.h"
  30 #include "config.h"
  31
  32 #ifdef __ANDROID__
  33 unsigned int android_log_level_mapping[] = {
  34                 /* LMT_ERROR */   ANDROID_LOG_ERROR,
  35                 /* LMT_ACTION */  ANDROID_LOG_WARN,
  36                 /* LMT_INFO */    ANDROID_LOG_INFO,
  37                 /* LMT_VERBOSE */ ANDROID_LOG_VERBOSE
  38         };
  39 #endif
  40
  41 std::list<ILogOutput*> log_outputs[LMT_NUM_VALUES];
  42 std::map<threadid_t, std::string> log_threadnames;
  43 JMutex                            log_threadnamemutex;
  44
  45 void log_add_output(ILogOutput *out, enum LogMessageLevel lev)
  46 {
  47         log_outputs[lev].push_back(out);
  48 }
  49
  50 void log_add_output_maxlev(ILogOutput *out, enum LogMessageLevel lev)
  51 {
  52         for(int i=0; i<=lev; i++)
  53                 log_outputs[i].push_back(out);
  54 }
  55
  56 void log_add_output_all_levs(ILogOutput *out)
  57 {
  58         for(int i=0; i<LMT_NUM_VALUES; i++)
  59                 log_outputs[i].push_back(out);
  60 }
  61
  62 void log_remove_output(ILogOutput *out)
  63 {
  64         for(int i=0; i<LMT_NUM_VALUES; i++){
  65                 std::list<ILogOutput*>::iterator it =
  66                                 std::find(log_outputs[i].begin(), log_outputs[i].end(), out);
  67                 if(it != log_outputs[i].end())
  68                         log_outputs[i].erase(it);
  69         }
  70 }
  71
  72 void log_set_lev_silence(enum LogMessageLevel lev, bool silence)
  73 {
  74         log_threadnamemutex.Lock();
  75
  76         for (std::list<ILogOutput *>::iterator
  77                         it = log_outputs[lev].begin();
  78                         it != log_outputs[lev].end();
  79                         ++it) {
  80                 ILogOutput *out = *it;
  81                 out->silence = silence;
  82         }
  83
  84         log_threadnamemutex.Unlock();
  85 }
  86
  87 void log_register_thread(const std::string &name)
  88 {
  89         threadid_t id = get_current_thread_id();
  90         log_threadnamemutex.Lock();
  91         log_threadnames[id] = name;
  92         log_threadnamemutex.Unlock();
  93 }
  94
  95 void log_deregister_thread()
  96 {
  97         threadid_t id = get_current_thread_id();
  98         log_threadnamemutex.Lock();
  99         log_threadnames.erase(id);
 100         log_threadnamemutex.Unlock();
 101 }
 102
 103 static std::string get_lev_string(enum LogMessageLevel lev)
 104 {
 105         switch(lev){
 106         case LMT_ERROR:
 107                 return "ERROR";
 108         case LMT_ACTION:
 109                 return "ACTION";
 110         case LMT_INFO:
 111                 return "INFO";
 112         case LMT_VERBOSE:
 113                 return "VERBOSE";
 114         case LMT_NUM_VALUES:
 115                 break;
 116         }
 117         return "(unknown level)";
 118 }
 119
 120 void log_printline(enum LogMessageLevel lev, const std::string &text)
 121 {
 122         log_threadnamemutex.Lock();
 123         std::string threadname = "(unknown thread)";
 124         std::map<threadid_t, std::string>::const_iterator i;
 125         i = log_threadnames.find(get_current_thread_id());
 126         if(i != log_threadnames.end())
 127                 threadname = i->second;
 128         std::string levelname = get_lev_string(lev);
 129         std::ostringstream os(std::ios_base::binary);
 130         os<<getTimestamp()<<": "<<levelname<<"["<<threadname<<"]: "<<text;
 131         for(std::list<ILogOutput*>::iterator i = log_outputs[lev].begin();
 132                         i != log_outputs[lev].end(); i++){
 133                 ILogOutput *out = *i;
 134                 if (out->silence)
 135                         continue;
 136
 137                 out->printLog(os.str());
 138                 out->printLog(os.str(), lev);
 139                 out->printLog(lev, text);
 140         }
 141         log_threadnamemutex.Unlock();
 142 }
 143
 144 class Logbuf : public std::streambuf
 145 {
 146 public:
 147         Logbuf(enum LogMessageLevel lev):
 148                 m_lev(lev)
 149         {
 150         }
 151
 152         ~Logbuf()
 153         {
 154         }
 155
 156         int overflow(int c)
 157         {
 158                 bufchar(c);
 159                 return c;
 160         }
 161         std::streamsize xsputn(const char *s, std::streamsize n)
 162         {
 163                 for(int i=0; i<n; i++)
 164                         bufchar(s[i]);
 165                 return n;
 166         }
 167
 168         void printbuf()
 169         {
 170                 log_printline(m_lev, m_buf);
 171 #ifdef __ANDROID__
 172                 __android_log_print(android_log_level_mapping[m_lev], PROJECT_NAME, "%s", m_buf.c_str());
 173 #endif
 174         }
 175
 176         void bufchar(char c)
 177         {
 178                 if(c == '\n' || c == '\r'){
 179                         if(m_buf != "")
 180                                 printbuf();
 181                         m_buf = "";
 182                         return;
 183                 }
 184                 m_buf += c;
 185         }
 186
 187 private:
 188         enum LogMessageLevel m_lev;
 189         std::string m_buf;
 190 };
 191
 192 Logbuf errorbuf(LMT_ERROR);
 193 Logbuf actionbuf(LMT_ACTION);
 194 Logbuf infobuf(LMT_INFO);
 195 Logbuf verbosebuf(LMT_VERBOSE);
 196 std::ostream errorstream(&errorbuf);
 197 std::ostream actionstream(&actionbuf);
 198 std::ostream infostream(&infobuf);
 199 std::ostream verbosestream(&verbosebuf);
 200
 201 bool log_trace_level_enabled = false;
 202