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 "jthread/jmutexautolock.h"
  28 #include "debug.h"
  29 #include "gettime.h"
  30 #include "porting.h"
  31 #include "config.h"
  32
  33 #ifdef __ANDROID__
  34 unsigned int android_log_level_mapping[] = {
  35                 /* LMT_ERROR */   ANDROID_LOG_ERROR,
  36                 /* LMT_ACTION */  ANDROID_LOG_WARN,
  37                 /* LMT_INFO */    ANDROID_LOG_INFO,
  38                 /* LMT_VERBOSE */ ANDROID_LOG_VERBOSE
  39         };
  40 #endif
  41
  42 std::vector<ILogOutput*> log_outputs[LMT_NUM_VALUES];
  43 std::map<threadid_t, std::string> log_threadnames;
  44 JMutex                            log_threadnamemutex;
  45
  46 void log_add_output(ILogOutput *out, enum LogMessageLevel lev)
  47 {
  48         log_outputs[lev].push_back(out);
  49 }
  50
  51 void log_add_output_maxlev(ILogOutput *out, enum LogMessageLevel lev)
  52 {
  53         for(int i=0; i<=lev; i++)
  54                 log_outputs[i].push_back(out);
  55 }
  56
  57 void log_add_output_all_levs(ILogOutput *out)
  58 {
  59         for(int i=0; i<LMT_NUM_VALUES; i++)
  60                 log_outputs[i].push_back(out);
  61 }
  62
  63 void log_remove_output(ILogOutput *out)
  64 {
  65         for(int i=0; i<LMT_NUM_VALUES; i++){
  66                 std::vector<ILogOutput*>::iterator it =
  67                                 std::find(log_outputs[i].begin(), log_outputs[i].end(), out);
  68                 if(it != log_outputs[i].end())
  69                         log_outputs[i].erase(it);
  70         }
  71 }
  72
  73 void log_set_lev_silence(enum LogMessageLevel lev, bool silence)
  74 {
  75         JMutexAutoLock lock(log_threadnamemutex);
  76
  77         for (std::vector<ILogOutput *>::iterator it = log_outputs[lev].begin();
  78                         it != log_outputs[lev].end(); ++it) {
  79                 ILogOutput *out = *it;
  80                 out->silence = silence;
  81         }
  82 }
  83
  84 void log_register_thread(const std::string &name)
  85 {
  86         threadid_t id = get_current_thread_id();
  87         JMutexAutoLock lock(log_threadnamemutex);
  88
  89         log_threadnames[id] = name;
  90 }
  91
  92 void log_deregister_thread()
  93 {
  94         threadid_t id = get_current_thread_id();
  95         JMutexAutoLock lock(log_threadnamemutex);
  96
  97         log_threadnames.erase(id);
  98 }
  99
 100 static std::string get_lev_string(enum LogMessageLevel lev)
 101 {
 102         switch(lev){
 103         case LMT_ERROR:
 104                 return "ERROR";
 105         case LMT_ACTION:
 106                 return "ACTION";
 107         case LMT_INFO:
 108                 return "INFO";
 109         case LMT_VERBOSE:
 110                 return "VERBOSE";
 111         case LMT_NUM_VALUES:
 112                 break;
 113         }
 114         return "(unknown level)";
 115 }
 116
 117 void log_printline(enum LogMessageLevel lev, const std::string &text)
 118 {
 119         JMutexAutoLock lock(log_threadnamemutex);
 120         std::string threadname = "(unknown thread)";
 121         std::map<threadid_t, std::string>::const_iterator i;
 122         i = log_threadnames.find(get_current_thread_id());
 123         if(i != log_threadnames.end())
 124                 threadname = i->second;
 125         std::string levelname = get_lev_string(lev);
 126         std::ostringstream os(std::ios_base::binary);
 127         os << getTimestamp() << ": " << levelname << "["<<threadname<<"]: " << text;
 128
 129         for(std::vector<ILogOutput*>::iterator i = log_outputs[lev].begin();
 130                         i != log_outputs[lev].end(); i++) {
 131                 ILogOutput *out = *i;
 132                 if (out->silence)
 133                         continue;
 134
 135                 out->printLog(os.str());
 136                 out->printLog(os.str(), lev);
 137                 out->printLog(lev, text);
 138         }
 139 }
 140
 141 class Logbuf : public std::streambuf
 142 {
 143 public:
 144         Logbuf(enum LogMessageLevel lev):
 145                 m_lev(lev)
 146         {
 147         }
 148
 149         ~Logbuf()
 150         {
 151         }
 152
 153         int overflow(int c)
 154         {
 155                 bufchar(c);
 156                 return c;
 157         }
 158         std::streamsize xsputn(const char *s, std::streamsize n)
 159         {
 160                 for(int i=0; i<n; i++)
 161                         bufchar(s[i]);
 162                 return n;
 163         }
 164
 165         void printbuf()
 166         {
 167                 log_printline(m_lev, m_buf);
 168 #ifdef __ANDROID__
 169                 __android_log_print(android_log_level_mapping[m_lev], PROJECT_NAME, "%s", m_buf.c_str());
 170 #endif
 171         }
 172
 173         void bufchar(char c)
 174         {
 175                 if(c == '\n' || c == '\r'){
 176                         if(m_buf != "")
 177                                 printbuf();
 178                         m_buf = "";
 179                         return;
 180                 }
 181                 m_buf += c;
 182         }
 183
 184 private:
 185         enum LogMessageLevel m_lev;
 186         std::string m_buf;
 187 };
 188
 189 Logbuf errorbuf(LMT_ERROR);
 190 Logbuf actionbuf(LMT_ACTION);
 191 Logbuf infobuf(LMT_INFO);
 192 Logbuf verbosebuf(LMT_VERBOSE);
 193 std::ostream errorstream(&errorbuf);
 194 std::ostream actionstream(&actionbuf);
 195 std::ostream infostream(&infobuf);
 196 std::ostream verbosestream(&verbosebuf);
 197
 198 bool log_trace_level_enabled = false;
 199