SoMemoryError.h

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**=======================================================================*/
/*=======================================================================
** Author      : Paul S. Strauss (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_MEMORY_ERROR
#define  _SO_MEMORY_ERROR
 
#include <Inventor/errors/SoError.h>
 
class SbThreadMutex;
class SoMemoryError;

typedef bool SoMemoryCleanupCB(const size_t requestedByteSize, void* data);

class  SoMemoryError : public SoError {
 
 public:

  static void setHandlerCallback(SoErrorCB *cb, void *data);

  static SoErrorCB* getHandlerCallback();

  static void* getHandlerData();

  static void setMemoryCleanupCallback(SoMemoryCleanupCB *cb, void * data);

  static SoType getClassTypeId();

  virtual SoType getTypeId() const;

  static void post(const SbString& whatWasAllocated);

  static void post(const char* whatWasAllocated);
 
 private:
  // Initializes SoMemoryError class
  static void initClass();
  static void exitClass();
  static SoErrorCB* getDefaultHandlerCB() { return defaultHandlerCB; }
  static bool getMemorySpace(const size_t size);
 
 private:
  // Returns handler callback (and data) to use for a given instance
  virtual SoErrorCB * getHandler(void *&data) const;
  virtual bool isInit() const;
 
 private:
  // Type id of SoMemoryError class
  static SoType classTypeId;
  // Handler callback for class
  static SoErrorCB *handlerCB;
  // User data for callback
  static void *cbData;
  // TRUE if handler initialized
  static SbBool wasInitted;
 
  static SoMemoryError* s_memoryErrorObject;
  static SbThreadMutex* s_threadMutex;
  static SbString* s_memoryErrorString;
 
  // This allow to avoid infinite loop in this code
  // when user set an error callback that need allocation itself.
  static bool s_memoryFreeSpaceLoop;
  static SoMemoryCleanupCB* s_memoryCleanupCB;
  static void* s_memoryCleanupData;
 
};
 
#endif /* _SO_MEMORY_ERROR */