# EmergencyHandler

class `EmergencyHandler`

  The EmergencyHandler class is the base class for an custom EmergencyHandler. An EmergencyHandler allows the developer to provide custom logic to handle ‘emergency’ situations. For example, one can set a soft memory limit using HPS::Database::SetSoftMemoryLimit. If that limit is hit, Visualize will call the EmergencyHandler.

  An EmergencyHandler is set by calling HPS::Database::SetEmergencyHandler. Only one EmergencyHandler can be set on the Database. If you try to set a second handler, the first one will be overwritten.

  The default emergency handler will print a few diagnostics to stdout (when run in debug mode), but will make no attempt to recover from the emergency condition.

  Public Functions

  inline `EmergencyHandler`()

    A constructor for an EmergencyHandler.

  intptr_t `GetClassID`() const

    Returns a unique identifier that is shared by all objects of the same class.

  virtual void `Handle`(char const *message, HPS::Emergency::Code code) = 0

    Visualize will call the EmergencyHandler::Handle method if any of the handler-enabling conditions are reached. The Emergency::Code value describes the type of condition. IMPORTANT: calling any Visualize API from your EmergencyHandler::Handle function (for any emergency code) may cause a deadlock.

  virtual `~EmergencyHandler`()

  Public Static Functions

  static inline void `operator delete`(void *in_ptr, size_t in_size)
  static inline void *`operator new`(size_t in_size)

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