opensync-plugin/src/trace.h

   1 //
   2 // \file        trace.h
   3 //              RAII class for trace logging.
   4 //
   5
   6 /*
   7     Copyright (C) 2006-2010, 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 #ifndef __BARRY_SYNC_TRACE_H__
  23 #define __BARRY_SYNC_TRACE_H__
  24
  25 #include <opensync/opensync.h>
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28
  29 class Trace
  30 {
  31         const char *text, *tag;
  32 public:
  33         explicit Trace(const char *t) : text(t), tag(0)
  34         {
  35                 osync_trace(TRACE_ENTRY, "barry_sync: %s", text);
  36         }
  37
  38         Trace(const char *t, const char *tag) : text(t), tag(tag)
  39         {
  40                 osync_trace(TRACE_ENTRY, "barry_sync (%s): %s", tag, text);
  41         }
  42
  43         ~Trace()
  44         {
  45                 if( tag )
  46                         osync_trace(TRACE_EXIT, "barry_sync (%s): %s", tag, text);
  47                 else
  48                         osync_trace(TRACE_EXIT, "barry_sync: %s", text);
  49         }
  50
  51         void log(const char *t)
  52         {
  53                 osync_trace(TRACE_INTERNAL, "barry_sync: %s", t);
  54         }
  55
  56         void logf(const char *t, ...)
  57         {
  58                 va_list vl;
  59                 va_start(vl, t);
  60                 char buffer[2048];
  61                 int n = vsnprintf(buffer, sizeof(buffer), t, vl);
  62                 va_end(vl);
  63                 if( n > -1 && n < (int)sizeof(buffer) )
  64                         osync_trace(TRACE_INTERNAL, "barry_sync: %s", buffer);
  65                 else
  66                         osync_trace(TRACE_INTERNAL, "barry_sync: (trace error, output too long for buffer: %s)", t);
  67         }
  68 };
  69
  70 #endif
  71