ACE/examples/APG/Logging/Trace.h

   1 #ifndef TRACE_H
   2 #define TRACE_H
   3
   4 #include "ace/Log_Msg.h"
   5
   6 // Listing 1 code/ch03
   7 class Trace
   8 {
   9 public:
  10   Trace (const ACE_TCHAR *prefix,
  11    const ACE_TCHAR *name,
  12    int line,
  13    const ACE_TCHAR *file)
  14     {
  15       this->prefix_ = prefix;
  16       this->name_   = name;
  17       this->line_   = line;
  18       this->file_   = file;
  19
  20       ACE_Log_Msg *lm = ACE_LOG_MSG;
  21       if (lm->tracing_enabled ()
  22           && lm->trace_active () == 0)
  23         {
  24           lm->trace_active (1);
  25           ACE_DEBUG
  26             ((LM_TRACE,
  27               ACE_TEXT ("%s%*s(%t) calling %s in file `%s'")
  28               ACE_TEXT (" on line %d\n"),
  29               this->prefix_,
  30               Trace::nesting_indent_ * lm->inc (),
  31               ACE_TEXT (""),
  32               this->name_,
  33               this->file_,
  34               this->line_));
  35           lm->trace_active (0);
  36         }
  37     }
  38
  39   void setLine (int line)
  40     {
  41       this->line_ = line;
  42     }
  43
  44   ~Trace ()
  45     {
  46       ACE_Log_Msg *lm = ACE_LOG_MSG;
  47       if (lm->tracing_enabled ()
  48           && lm->trace_active () == 0)
  49         {
  50           lm->trace_active (1);
  51           ACE_DEBUG
  52             ((LM_TRACE,
  53               ACE_TEXT ("%s%*s(%t) leaving %s in file `%s'")
  54               ACE_TEXT (" on line %d\n"),
  55               this->prefix_,
  56               Trace::nesting_indent_ * lm->dec (),
  57               ACE_TEXT (""),
  58               this->name_,
  59               this->file_,
  60               this->line_));
  61           lm->trace_active (0);
  62         }
  63     }
  64
  65 private:
  66   enum { nesting_indent_ = 3 };
  67
  68   const ACE_TCHAR *prefix_;
  69   const ACE_TCHAR *name_;
  70   const ACE_TCHAR *file_;
  71   int line_;
  72 };
  73 // Listing 1
  74
  75 // Listing 2 code/ch03
  76 #define TRACE_PREFIX       ACE_TEXT ("TRACE ")
  77
  78 #if defined (TRACE)
  79 #undef TRACE
  80 #endif /* TRACE */
  81
  82 #if (ACE_NTRACE == 1)
  83 #    define TRACE(X)
  84 #    define TRACE_RETURN(V)     return V;
  85 #    define TRACE_RETURN_VOID()
  86 #else
  87 #    define TRACE(X)                           \
  88             Trace ____ (TRACE_PREFIX,          \
  89                         ACE_TEXT (X),          \
  90                         __LINE__,              \
  91                         ACE_TEXT (__FILE__))
  92
  93 #    define TRACE_RETURN(V)                    \
  94             do { ____.setLine(__LINE__); return V; } while (0)
  95
  96 #    define TRACE_RETURN_VOID()                \
  97             do { ____.setLine(__LINE__); } while (0)
  98 #endif
  99 // Listing 2
 100
 101 //////////////////////////////////////////////////
 102
 103 // Listing 3 code/ch03
 104
 105 #define DEBUG_PREFIX       ACE_TEXT ("DEBUG%I")
 106 #define INFO_PREFIX        ACE_TEXT ("INFO%I")
 107 #define NOTICE_PREFIX      ACE_TEXT ("NOTICE%I")
 108 #define WARNING_PREFIX     ACE_TEXT ("WARNING%I")
 109 #define ERROR_PREFIX       ACE_TEXT ("ERROR%I")
 110 #define CRITICAL_PREFIX    ACE_TEXT ("CRITICAL%I")
 111 #define ALERT_PREFIX       ACE_TEXT ("ALERT%I")
 112 #define EMERGENCY_PREFIX   ACE_TEXT ("EMERGENCY%I")
 113
 114 #define MY_DEBUG(X)     \
 115         ACE_DEBUG(( LM_DEBUG,  \
 116                     DEBUG_PREFIX \
 117                     X))
 118 #define MY_INFO(X)     \
 119         ACE_DEBUG(( LM_INFO,  \
 120                     INFO_PREFIX \
 121                     X))
 122 #define MY_NOTICE(X)     \
 123         ACE_DEBUG(( LM_NOTICE,  \
 124                     NOTICE_PREFIX \
 125                     X))
 126 #define MY_WARNING(X)     \
 127         ACE_DEBUG(( LM_WARNING,  \
 128                     WARNING_PREFIX \
 129                     X))
 130 #define MY_ERROR(X)     \
 131         ACE_DEBUG(( LM_ERROR,  \
 132                     ERROR_PREFIX \
 133                     X))
 134 #define MY_CRITICAL(X)     \
 135         ACE_DEBUG(( LM_CRITICAL,  \
 136                     CRITICAL_PREFIX \
 137                     X))
 138 #define MY_ALERT(X)     \
 139         ACE_DEBUG(( LM_ALERT,  \
 140                     ALERT_PREFIX \
 141                     X))
 142 #define MY_EMERGENCY(X)     \
 143         ACE_DEBUG(( LM_EMERGENCY,  \
 144                     EMERGENCY_PREFIX \
 145                     X))
 146 // Listing 3
 147
 148 #endif /* TRACE_H */