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 "threading/mutex_auto_lock.h"
  28 #include "debug.h"
  29 #include "gettime.h"
  30 #include "porting.h"
  31 #include "config.h"
  32
  33 // Connection
  34 std::ostream *dout_con_ptr = &dummyout;
  35 std::ostream *derr_con_ptr = &verbosestream;
  36
  37 // Server
  38 std::ostream *dout_server_ptr = &infostream;
  39 std::ostream *derr_server_ptr = &errorstream;
  40
  41 #ifndef SERVER
  42 // Client
  43 std::ostream *dout_client_ptr = &infostream;
  44 std::ostream *derr_client_ptr = &errorstream;
  45 #endif
  46
  47 #ifdef __ANDROID__
  48 unsigned int android_log_level_mapping[] = {
  49                 /* LMT_ERROR */   ANDROID_LOG_ERROR,
  50                 /* LMT_ACTION */  ANDROID_LOG_WARN,
  51                 /* LMT_INFO */    ANDROID_LOG_INFO,
  52                 /* LMT_VERBOSE */ ANDROID_LOG_VERBOSE
  53         };
  54 #endif
  55
  56 std::vector<ILogOutput*> log_outputs[LMT_NUM_VALUES];
  57 std::map<threadid_t, std::string> log_thread_names;
  58 Mutex log_thread_name_mutex;
  59
  60 void log_add_output(ILogOutput *out, enum LogMessageLevel lev)
  61 {
  62         log_outputs[lev].push_back(out);
  63 }
  64
  65 void log_add_output_maxlev(ILogOutput *out, enum LogMessageLevel lev)
  66 {
  67         for(int i=0; i<=lev; i++)
  68                 log_outputs[i].push_back(out);
  69 }
  70
  71 void log_add_output_all_levs(ILogOutput *out)
  72 {
  73         for(int i=0; i<LMT_NUM_VALUES; i++)
  74                 log_outputs[i].push_back(out);
  75 }
  76
  77 void log_remove_output(ILogOutput *out)
  78 {
  79         for(int i=0; i<LMT_NUM_VALUES; i++){
  80                 std::vector<ILogOutput*>::iterator it =
  81                                 std::find(log_outputs[i].begin(), log_outputs[i].end(), out);
  82                 if(it != log_outputs[i].end())
  83                         log_outputs[i].erase(it);
  84         }
  85 }
  86
  87 void log_set_lev_silence(enum LogMessageLevel lev, bool silence)
  88 {
  89         MutexAutoLock lock(log_thread_name_mutex);
  90
  91         for (std::vector<ILogOutput *>::iterator it = log_outputs[lev].begin();
  92                         it != log_outputs[lev].end(); ++it) {
  93                 ILogOutput *out = *it;
  94                 out->silence = silence;
  95         }
  96 }
  97
  98 void log_register_thread(const std::string &name)
  99 {
 100         threadid_t id = get_current_thread_id();
 101         MutexAutoLock lock(log_thread_name_mutex);
 102
 103         log_thread_names[id] = name;
 104 }
 105
 106 void log_deregister_thread()
 107 {
 108         threadid_t id = get_current_thread_id();
 109         MutexAutoLock lock(log_thread_name_mutex);
 110
 111         log_thread_names.erase(id);
 112 }
 113
 114 static std::string get_lev_string(enum LogMessageLevel lev)
 115 {
 116         switch(lev){
 117         case LMT_ERROR:
 118                 return "ERROR";
 119         case LMT_ACTION:
 120                 return "ACTION";
 121         case LMT_INFO:
 122                 return "INFO";
 123         case LMT_VERBOSE:
 124                 return "VERBOSE";
 125         case LMT_NUM_VALUES:
 126                 break;
 127         }
 128         return "(unknown level)";
 129 }
 130
 131 void log_printline(enum LogMessageLevel lev, const std::string &text)
 132 {
 133         MutexAutoLock lock(log_thread_name_mutex);
 134         std::string threadname = "(unknown thread)";
 135         std::map<threadid_t, std::string>::const_iterator i;
 136         i = log_thread_names.find(get_current_thread_id());
 137         if(i != log_thread_names.end())
 138                 threadname = i->second;
 139         std::string levelname = get_lev_string(lev);
 140         std::ostringstream os(std::ios_base::binary);
 141         os << getTimestamp() << ": " << levelname << "["<<threadname<<"]: " << text;
 142
 143         for(std::vector<ILogOutput*>::iterator i = log_outputs[lev].begin();
 144                         i != log_outputs[lev].end(); i++) {
 145                 ILogOutput *out = *i;
 146                 if (out->silence)
 147                         continue;
 148
 149                 out->printLog(os.str());
 150                 out->printLog(os.str(), lev);
 151                 out->printLog(lev, text);
 152         }
 153 }
 154
 155 class Logbuf : public std::streambuf
 156 {
 157 public:
 158         Logbuf(enum LogMessageLevel lev):
 159                 m_lev(lev)
 160         {
 161         }
 162
 163         ~Logbuf()
 164         {
 165         }
 166
 167         int overflow(int c)
 168         {
 169                 bufchar(c);
 170                 return c;
 171         }
 172         std::streamsize xsputn(const char *s, std::streamsize n)
 173         {
 174                 for(int i=0; i<n; i++)
 175                         bufchar(s[i]);
 176                 return n;
 177         }
 178
 179         void printbuf()
 180         {
 181                 log_printline(m_lev, m_buf);
 182 #ifdef __ANDROID__
 183                 __android_log_print(android_log_level_mapping[m_lev], PROJECT_NAME, "%s", m_buf.c_str());
 184 #endif
 185         }
 186
 187         void bufchar(char c)
 188         {
 189                 if(c == '\n' || c == '\r'){
 190                         if(m_buf != "")
 191                                 printbuf();
 192                         m_buf = "";
 193                         return;
 194                 }
 195                 m_buf += c;
 196         }
 197
 198 private:
 199         enum LogMessageLevel m_lev;
 200         std::string m_buf;
 201 };
 202
 203 Logbuf errorbuf(LMT_ERROR);
 204 Logbuf actionbuf(LMT_ACTION);
 205 Logbuf infobuf(LMT_INFO);
 206 Logbuf verbosebuf(LMT_VERBOSE);
 207 std::ostream errorstream(&errorbuf);
 208 std::ostream actionstream(&actionbuf);
 209 std::ostream infostream(&infobuf);
 210 std::ostream verbosestream(&verbosebuf);
 211
 212 bool log_trace_level_enabled = false;
 213