opensync-plugin-0.4x/src/trace.h

   1 //
   2 // \file        trace.h
   3 //              RAII class for trace logging.
   4 //
   5
   6 /*
   7     Copyright (C) 2006-2013, 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 #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 #include "format_check.h"
  29
  30 class Trace
  31 {
  32         const char *text, *tag;
  33 public:
  34         explicit Trace(const char *t) : text(t), tag(0)
  35         {
  36                 osync_trace(TRACE_ENTRY, "barry_sync: %s", text);
  37         }
  38
  39         Trace(const char *t, const char *tag) : text(t), tag(tag)
  40         {
  41                 osync_trace(TRACE_ENTRY, "barry_sync (%s): %s", tag, text);
  42         }
  43
  44         ~Trace()
  45         {
  46                 if( tag )
  47                         osync_trace(TRACE_EXIT, "barry_sync (%s): %s", tag, text);
  48                 else
  49                         osync_trace(TRACE_EXIT, "barry_sync: %s", text);
  50         }
  51
  52         void log(const char *t)
  53         {
  54                 osync_trace(TRACE_INTERNAL, "barry_sync: %s", t);
  55         }
  56
  57         void logf(const char *t, ...) BARRY_GCC_FORMAT_CHECK(2, 3)
  58         {
  59                 va_list vl;
  60                 va_start(vl, t);
  61                 char buffer[2048];
  62                 int n = vsnprintf(buffer, sizeof(buffer), t, vl);
  63                 va_end(vl);
  64                 if( n > -1 && n < (int)sizeof(buffer) )
  65                         osync_trace(TRACE_INTERNAL, "barry_sync: %s", buffer);
  66                 else
  67                         osync_trace(TRACE_INTERNAL, "barry_sync: (trace error, output too long for buffer: %s)", t);
  68         }
  69 };
  70
  71 #endif
  72