src/log.cc

   1 ///
   2 /// \file       log.cc
   3 ///             General Barry interface routines
   4 ///
   5
   6 /*
   7     Copyright (C) 2008-2010, Net Direct Inc. (http://www.netdirect.ca/)
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  17
  18     See the GNU General Public License in the COPYING file at the
  19     root directory of this project for more details.
  20 */
  21
  22 #include "log.h"
  23 #include "clog.h"
  24 #include <pthread.h>
  25 #include <stdio.h>
  26 #include <stdarg.h>
  27 #include <string.h>
  28 #include <iostream>
  29
  30 namespace Barry {
  31
  32 extern bool __data_dump_mode__;
  33 extern std::ostream *LogStream;
  34 extern pthread_mutex_t LogStreamMutex;
  35
  36 LogLock::LogLock()
  37 {
  38         while( pthread_mutex_lock(&LogStreamMutex) != 0 )
  39                 ;
  40 }
  41
  42 LogLock::~LogLock()
  43 {
  44         pthread_mutex_unlock(&LogStreamMutex);
  45 }
  46
  47
  48 bool LogVerbose()
  49 {
  50         return __data_dump_mode__;
  51 }
  52
  53 std::ostream* GetLogStream()
  54 {
  55         return LogStream;
  56 }
  57
  58 } // namespace Barry
  59
  60 // Callable from C:
  61
  62 void BarryLogf(int verbose, const char *msg, ...)
  63 {
  64         va_list vl;
  65         va_start(vl, msg);
  66         char buffer[2048];
  67         char *output = buffer;
  68         int buflen = sizeof(buffer);
  69         int n = vsnprintf(buffer, buflen, msg, vl);
  70         if( n < 0 || n >= buflen ) {
  71                 buflen = n + 100;
  72                 output = new char [buflen];
  73                 n = vsnprintf(output, buflen, msg, vl);
  74                 if( n < 0 || n >= buflen ) {
  75                         delete [] output;
  76                         output = buffer;
  77                         strcpy(buffer, "BarryLog: (trace error, output too long for buffer)");
  78                 }
  79         }
  80         va_end(vl);
  81
  82         if( verbose ) {
  83                 barryverbose(output);
  84         }
  85         else {
  86                 barrylog(output);
  87         }
  88
  89         if( output != buffer )
  90                 delete [] output;
  91 }
  92