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 std::list<ILogOutput*> log_outputs[LMT_NUM_VALUES];
  33 std::map<threadid_t, std::string> log_threadnames;
  34 JMutex                            log_threadnamemutex;
  35
  36 void log_add_output(ILogOutput *out, enum LogMessageLevel lev)
  37 {
  38         log_outputs[lev].push_back(out);
  39 }
  40
  41 void log_add_output_maxlev(ILogOutput *out, enum LogMessageLevel lev)
  42 {
  43         for(int i=0; i<=lev; i++)
  44                 log_outputs[i].push_back(out);
  45 }
  46
  47 void log_add_output_all_levs(ILogOutput *out)
  48 {
  49         for(int i=0; i<LMT_NUM_VALUES; i++)
  50                 log_outputs[i].push_back(out);
  51 }
  52
  53 void log_remove_output(ILogOutput *out)
  54 {
  55         for(int i=0; i<LMT_NUM_VALUES; i++){
  56                 std::list<ILogOutput*>::iterator it =
  57                                 std::find(log_outputs[i].begin(), log_outputs[i].end(), out);
  58                 if(it != log_outputs[i].end())
  59                         log_outputs[i].erase(it);
  60         }
  61 }
  62
  63 void log_set_lev_silence(enum LogMessageLevel lev, bool silence)
  64 {
  65         log_threadnamemutex.Lock();
  66
  67         for (std::list<ILogOutput *>::iterator
  68                         it = log_outputs[lev].begin();
  69                         it != log_outputs[lev].end();
  70                         ++it) {
  71                 ILogOutput *out = *it;
  72                 out->silence = silence;
  73         }
  74
  75         log_threadnamemutex.Unlock();
  76 }
  77
  78 void log_register_thread(const std::string &name)
  79 {
  80         threadid_t id = get_current_thread_id();
  81         log_threadnamemutex.Lock();
  82         log_threadnames[id] = name;
  83         log_threadnamemutex.Unlock();
  84 }
  85
  86 void log_deregister_thread()
  87 {
  88         threadid_t id = get_current_thread_id();
  89         log_threadnamemutex.Lock();
  90         log_threadnames.erase(id);
  91         log_threadnamemutex.Unlock();
  92 }
  93
  94 static std::string get_lev_string(enum LogMessageLevel lev)
  95 {
  96         switch(lev){
  97         case LMT_ERROR:
  98                 return "ERROR";
  99         case LMT_ACTION:
 100                 return "ACTION";
 101         case LMT_INFO:
 102                 return "INFO";
 103         case LMT_VERBOSE:
 104                 return "VERBOSE";
 105         case LMT_NUM_VALUES:
 106                 break;
 107         }
 108         return "(unknown level)";
 109 }
 110
 111 void log_printline(enum LogMessageLevel lev, const std::string &text)
 112 {
 113         log_threadnamemutex.Lock();
 114         std::string threadname = "(unknown thread)";
 115         std::map<threadid_t, std::string>::const_iterator i;
 116         i = log_threadnames.find(get_current_thread_id());
 117         if(i != log_threadnames.end())
 118                 threadname = i->second;
 119         std::string levelname = get_lev_string(lev);
 120         std::ostringstream os(std::ios_base::binary);
 121         os<<getTimestamp()<<": "<<levelname<<"["<<threadname<<"]: "<<text;
 122         for(std::list<ILogOutput*>::iterator i = log_outputs[lev].begin();
 123                         i != log_outputs[lev].end(); i++){
 124                 ILogOutput *out = *i;
 125                 if (out->silence)
 126                         continue;
 127
 128                 out->printLog(os.str());
 129                 out->printLog(os.str(), lev);
 130                 out->printLog(lev, text);
 131         }
 132         log_threadnamemutex.Unlock();
 133 }
 134
 135 class Logbuf : public std::streambuf
 136 {
 137 public:
 138         Logbuf(enum LogMessageLevel lev):
 139                 m_lev(lev)
 140         {
 141         }
 142
 143         ~Logbuf()
 144         {
 145         }
 146
 147         int overflow(int c)
 148         {
 149                 bufchar(c);
 150                 return c;
 151         }
 152         std::streamsize xsputn(const char *s, std::streamsize n)
 153         {
 154                 for(int i=0; i<n; i++)
 155                         bufchar(s[i]);
 156                 return n;
 157         }
 158
 159         void printbuf()
 160         {
 161                 log_printline(m_lev, m_buf);
 162 #ifdef __ANDROID__
 163                 __android_log_print(ANDROID_LOG_ERROR, PROJECT_NAME, "%s", m_buf.c_str());
 164 #endif
 165         }
 166
 167         void bufchar(char c)
 168         {
 169                 if(c == '\n' || c == '\r'){
 170                         if(m_buf != "")
 171                                 printbuf();
 172                         m_buf = "";
 173                         return;
 174                 }
 175                 m_buf += c;
 176         }
 177
 178 private:
 179         enum LogMessageLevel m_lev;
 180         std::string m_buf;
 181 };
 182
 183 Logbuf errorbuf(LMT_ERROR);
 184 Logbuf actionbuf(LMT_ACTION);
 185 Logbuf infobuf(LMT_INFO);
 186 Logbuf verbosebuf(LMT_VERBOSE);
 187 std::ostream errorstream(&errorbuf);
 188 std::ostream actionstream(&actionbuf);
 189 std::ostream infostream(&infobuf);
 190 std::ostream verbosestream(&verbosebuf);
 191
 192 bool log_trace_level_enabled = false;
 193