logger_find_devices_by_data_event_c

	status.i4.v = logger_find_devices_by_data_event_c(event_string.i1a.r,
							  num_found.u4.r,
							  found_devices.sp.r
							  [,node.i4.v]
							  [,options.u4.v])

	This routine returns devices data logged on a data event.

	event_string	requested event
			(up to DATA_EVENT_MAX_LEN characters)
			(example: "p,10000,true")
	num_found	returned number of entries found
	found_devices	returned datalogging information
			(array of LOGGER_SEARCH_DATA structures)
			(Note: This is a pointer to a buffer allocated by
			 this routine. The caller should neither allocate
			 nor free this buffer.)
	[node]		requested Lumberjack node
			(default is 0 which results in returning data from all
			 nodes)
	[options]	search options (not used)
			(default is 0)

	This function returns ACNET status values as follows:

	OK			success
	LJ_MEMFAIL		dynamic memory allocation failure
	LJ_NO_SUCH		no matching devices were found
	SQL_xxx			error communicating with the database

	This function requires the following include files:

	clib_h, cnsparam_h, cns_data_structs_h, acnet_errors_h

	Related functions:

	logger_find_lists_by_data_event_c, logger_find_device_c,
	logger_devices_from_node_c, logger_get_device_c,
	logger_get_device_by_name_c, logger_get_device_list_c,
	logger_return_data, logger_setnode, logger_return_names,
	logger_check_alive, logger_restart_lists, logger_shutdown,
	logger_name_to_node, logger_available_device_dates_c,
	logger_available_device_data_entries_c, logger_get_list_data_events_c

	C/C++ usage:

	static const char event_string[DATA_EVENT_MAX_LEN+1] = "p,10000,true";
	int	status;
	int	node = 0;
	unsigned int	num_found;
	unsigned int	options = 0;
	LOGGER_SEARCH_DATA	*found_devices;

	status = logger_find_devices_by_data_event_c(event_string,&num_found,
						     &found_devices,node,
						     options);