42   // Function for listeners
  43   typedef void (*UpdateListenerFunction)(void);
  44 
  45   // Register callback for config change.
  46   // The callback is always called with ConfigurationLock held,
  47   // hence doing log reconfiguration from the callback will deadlock.
  48   // The main Java thread may call this callback if there is an early registration
  49   // else the attach listener JavaThread, started via diagnostic command, will be executing thread.
  50   // The main purpose of this callback is to see if a loglevel have been changed.
  51   // There is no way to unregister.
  52   static void register_update_listener(UpdateListenerFunction cb);
  53 
  54  private:
  55   static LogOutput**  _outputs;
  56   static size_t       _n_outputs;
  57 
  58   static UpdateListenerFunction*    _listener_callbacks;
  59   static size_t                     _n_listener_callbacks;
  60 
  61   // Create a new output. Returns NULL if failed.
  62   static LogOutput* new_output(char* name, const char* options, outputStream* errstream);
  63 
  64   // Add an output to the list of configured outputs. Returns the assigned index.
  65   static size_t add_output(LogOutput* out);
  66 
  67   // Delete a configured output. The stderr/stdout outputs can not be removed.
  68   // Output should be completely disabled before it is deleted.
  69   static void delete_output(size_t idx);
  70 
  71   // Disable all logging to the specified output and then delete it (unless it is stdout/stderr).
  72   static void disable_output(size_t idx);
  73 
  74   // Get output index by name. Returns SIZE_MAX if output not found.
  75   static size_t find_output(const char* name);
  76 
  77   // Configure output (add or update existing configuration) to log on tag-level combination using specified decorators.
  78   static void configure_output(size_t idx, const LogTagLevelExpression& tag_level_expression, const LogDecorators& decorators);
  79 
  80   // This should be called after any configuration change while still holding ConfigurationLock
  81   static void notify_update_listeners();
  82 

  42   // Function for listeners
  43   typedef void (*UpdateListenerFunction)(void);
  44 
  45   // Register callback for config change.
  46   // The callback is always called with ConfigurationLock held,
  47   // hence doing log reconfiguration from the callback will deadlock.
  48   // The main Java thread may call this callback if there is an early registration
  49   // else the attach listener JavaThread, started via diagnostic command, will be executing thread.
  50   // The main purpose of this callback is to see if a loglevel have been changed.
  51   // There is no way to unregister.
  52   static void register_update_listener(UpdateListenerFunction cb);
  53 
  54  private:
  55   static LogOutput**  _outputs;
  56   static size_t       _n_outputs;
  57 
  58   static UpdateListenerFunction*    _listener_callbacks;
  59   static size_t                     _n_listener_callbacks;
  60 
  61   // Create a new output. Returns NULL if failed.
  62   static LogOutput* new_output(const char* name, const char* options, outputStream* errstream);
  63 
  64   // Add an output to the list of configured outputs. Returns the assigned index.
  65   static size_t add_output(LogOutput* out);
  66 
  67   // Delete a configured output. The stderr/stdout outputs can not be removed.
  68   // Output should be completely disabled before it is deleted.
  69   static void delete_output(size_t idx);
  70 
  71   // Disable all logging to the specified output and then delete it (unless it is stdout/stderr).
  72   static void disable_output(size_t idx);
  73 
  74   // Get output index by name. Returns SIZE_MAX if output not found.
  75   static size_t find_output(const char* name);
  76 
  77   // Configure output (add or update existing configuration) to log on tag-level combination using specified decorators.
  78   static void configure_output(size_t idx, const LogTagLevelExpression& tag_level_expression, const LogDecorators& decorators);
  79 
  80   // This should be called after any configuration change while still holding ConfigurationLock
  81   static void notify_update_listeners();
  82