src/log.cc

   1 ///
   2 /// \file       log.cc
   3 ///             General Barry interface routines
   4 ///
   5
   6 /*
   7     Copyright (C) 2008-2013, 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 "platform.h"
  25 #include <pthread.h>
  26 #include <stdio.h>
  27 #include <stdarg.h>
  28 #include <string.h>
  29 #include <iostream>
  30
  31 namespace Barry {
  32
  33 extern bool __data_dump_mode__;
  34 extern std::ostream *LogStream;
  35 extern pthread_mutex_t LogStreamMutex;
  36
  37 LogLock::LogLock()
  38 {
  39         while( pthread_mutex_lock(&LogStreamMutex) != 0 )
  40                 ;
  41 }
  42
  43 LogLock::~LogLock()
  44 {
  45         pthread_mutex_unlock(&LogStreamMutex);
  46 }
  47
  48
  49 bool LogVerbose()
  50 {
  51         return __data_dump_mode__;
  52 }
  53
  54 std::ostream* GetLogStream()
  55 {
  56         return LogStream;
  57 }
  58
  59 } // namespace Barry
  60
  61 // Callable from C:
  62
  63 void BarryLogf(int verbose, const char *msg, ...)
  64 {
  65         va_list vl;
  66         va_start(vl, msg);
  67         char buffer[2048];
  68         char *output = buffer;
  69         int buflen = sizeof(buffer);
  70         int n = vsnprintf(buffer, buflen, msg, vl);
  71         if( n < 0 || n >= buflen ) {
  72                 buflen = n + 100;
  73                 output = new char [buflen];
  74                 n = vsnprintf(output, buflen, msg, vl);
  75                 if( n < 0 || n >= buflen ) {
  76                         delete [] output;
  77                         output = buffer;
  78                         strcpy(buffer, "BarryLog: (trace error, output too long for buffer)");
  79                 }
  80         }
  81         va_end(vl);
  82
  83         if( verbose ) {
  84                 barryverbose(output);
  85         }
  86         else {
  87                 barrylog(output);
  88         }
  89
  90         if( output != buffer )
  91                 delete [] output;
  92 }
  93