int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
	     int line)
	{
	int ret = 0;

	if (add_lock_callback != NULL)
		{
#ifdef LOCK_DEBUG
		int before= *pointer;
#endif

		ret=add_lock_callback(pointer,amount,type,file,line);
#ifdef LOCK_DEBUG
		fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
			CRYPTO_thread_id(),
			before,amount,ret,
			CRYPTO_get_lock_name(type),
			file,line);
#endif
		}
	else
		{
		CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);

		ret= *pointer+amount;
#ifdef LOCK_DEBUG
		fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
			CRYPTO_thread_id(),
			*pointer,amount,ret,
			CRYPTO_get_lock_name(type),
			file,line);
#endif
		*pointer=ret;
		CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
		}
	return(ret);
	}