Connect Class Reference

#include <connect.h>

Inheritance diagram for Connect:

Public Member Functions
	Connect ()
HandleHelper	getHandleHelper ()
HandleHelper	getInfo ()
PolicyHelper	getPolicyHelper ()
PolicyHelper	getPolicy ()
unsigned int	getNelemClient (unsigned int h)
unsigned int	getNelemNative (unsigned int h)
unsigned int	getNelemRequest (unsigned int h)
int	getStatus ()
CAFEStatus	getCafeStatus ()
CAFEStatusSeverity	getCafeStatusSeverity ()
int	_ca_flush_io ()
int	_ca_poll ()
int	_ca_pend_io (double t)
int	_ca_pend_event (double t)
bool	setPyCafe (bool b)
bool	getPyCafe ()
int	init () throw (CAFEException_init)
int	init (ca_preemptive_callback_select select) throw (CAFEException_init)
int	open (const string pvS, unsigned int &handle) throw (CAFEException_open)
int	open (const string pvS, const std::string pvAliasS, unsigned int &handle) throw (CAFEException_open)
int	open (const string pvArrayS, unsigned int handleArray, const unsigned int nHandles) throw (CAFEException_open)
	Establishes virtual circuits for a vector of epics process variables Check if handle already exists for given pv/ca_client_context If yes, nothing further to do, else create channel Determine connection status and properties of the pv Create CAFEConduit object and add to multi-index hash table .
int	open (const char *pv, unsigned int &handle) throw (CAFEException_open)
	Establishes virtual circuit to epics process variable Check if handle already exists for given pv/ca_client_context If yes, nothing further to do, else create channel Determine connection status and properties of the pv Create Conduit object and add to multi-index hash table .
int	open (const char pv, const char pvAlias, unsigned int &handle) throw (CAFEException_open)
	Establishes virtual circuit to epics process variable and defines its pv alias name Check if handle already exists for given pv/ca_client_context If yes, nothing further to do, else create channel Determine connection status and properties of the pv Create Conduit object and add to multi-index hash table .
int	open (const char *pvArray, unsigned int handleArray, const unsigned int nHandles) throw (CAFEException_open)
	Establishes virtual circuits for a vector of epics process variables Check if handle already exists for given pv/ca_client_context If yes, nothing further to do, else create channel Determine connection status and properties of the pv Create CAFEConduit object and add to multi-index hash table .
int	open (vector< const char * >, vector< unsigned int > &) throw (CAFEException_open)
	Establishes virtual circuits for a vector of epics process variables Check if handle already exists for given pv/ca_client_context If yes, nothing further to do, else create channel Determine connection status and properties of the pv Create CAFEConduit object and add to multi-index hash table .
int	open (vector< string >, vector< unsigned int > &) throw (CAFEException_open)
	Establishes virtual circuits for a vector of epics process variables Check if handle already exists for given pv/ca_client_context If yes, nothing further to do, else create channel Determine connection status and properties of the pv Create CAFEConduit object and add to multi-index hash table .
int	openV (vector< string > s, vector< unsigned int > &i) throw (CAFEException_open)
void	openGroupPrepare ()
void	openMonitorPrepare ()
double	setOpenDefaultPendTime (double _timeout)
double	getOpenDefaultPendTime ()
void	openGroupNowAndWait (double _timeout)
void	openMonitorNow ()
void	openMonitorNowAndWait (double _timeout)
void	openPrepare ()
void	openNowAndWait (double _timeout)
void	openNow ()
void	openNoWait ()
unsigned int	printHandle (unsigned int h)
unsigned int	printHandles (void)
unsigned int	printDisconnectedHandles (void)
unsigned int	getDisconnectedHandles (vector< unsigned int > &dhV, vector< string > &pvV)
void	printCAFEException_pv (CAFEException_pv &e)
int	closeChannels (unsigned int *handleArray, unsigned int nHandles)
	Closes connection for channel within a ca_client_context and deletes corresponding handle The handle must be within the same context. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event handlers for subscriptions (i.e., monitors). The Conduit handle is erased.
int	closeChannels (vector< unsigned int > v)
int	closeChannelsV (vector< unsigned int > v)
int	close (unsigned int handle)
	Closes connection for channel within a ca_client_context and deletes corresponding handle The handle must be within the same context. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event handlers for subscriptions (i.e. monitors). The Conduit handle is erased.
int	closeChannel (unsigned int handle)
int	closeChannels ()
	Closes all channel connections within a ca_client_context and removes the corresponding handles. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event subscriptions (for monitors). Corresponding Conduit handles are erased.
int	closeChannels (ca_client_context *cctLocal)
	Closes all channel connections within the given ca_client_context and removes the corresponding handles. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event subscriptions (for monitors). Corresponding Conduit handles are erased.
int	close ()
int	closeHandles (unsigned int *handleArray, unsigned int nHandles)
	Closes given channel connections (even if in other threads) and deletes their handles. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event subscriptions (for monitors). All corresponding Conduit handles are erased.
int	closeHandle (unsigned int handle)
	Closes channel connections (even if in other thread) and deletes handle. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event handlers for subscriptions (i.e. monitors). The Conduit handle is erased.
int	closeHandles ()
	Closes all channel connections (even if in other threads) and deletes all handles. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event subscriptions (for monitors). All Conduit handles are erased.
int	monitorStart (unsigned int handle, MonitorPolicy &mp)
	Monitor a PV.
int	monitorStart (unsigned int handle, unsigned int &monitorID)
	Monitor a PV.
int	monitorStart (unsigned int handle)
int	monitorStop (unsigned int handle, MonitorPolicy mp)
	Stop monitor of a PV.
int	monitorStop (unsigned int handle, unsigned int monitorID)
	Stop monitor of a PV.
int	monitorStopWithID (unsigned int handle, unsigned int monitorID)
int	monitorStop (unsigned int handle)
	Stop all monitors for this handle.
int	monitorStop ()
	Stop all monitors.
int	monitorStopAll ()
int	monitorStop (ca_client_context *ccc)
	Stop all monitors for the given ca_client_context.
int	monitorStart (unsigned int *handleArray, unsigned int nelem)
int	monitorStart (unsigned int handleArray, unsigned int nelem, int statusArray, MonitorPolicy *mpV)
	Monitor an array of PV with parameters set by MonitorPolicy objects.
int	monitorStart (unsigned int handleArray, unsigned int nelem, int statusArray, unsigned int *monitorIDArray)
	Monitor an array of PV with parameters with default policies.
int	monitorStart (vector< unsigned int > handleV, vector< int > &statusV, vector< MonitorPolicy > &mpV)
	Monitor an array of PV with parameters set by MonitorPolicy objects.
int	monitorStart (vector< unsigned int > handleV, vector< int > &statusV, vector< unsigned int > &monitorIDV)
	Monitor an array of PV with default MonitorPolicy object parameters.
int	monitorStop (unsigned int handleArray, unsigned int nelem, int statusArray)
	Stop all monitors for this array of handles.
int	monitorStop (vector< unsigned int > handleV, vector< int > &statusV)
	Stop all monitors for a vector of handles.
int	monitorStop (unsigned int *handleArray, unsigned int nelem)
MonitorPolicy *	createMonitorPolicyArray (const unsigned int nmp)
int	terminate ()
	Closes all channels within a given context and all handles for all contexts Shuts down the local channel access client context and frees allocated resources contextDestroy is not essential as resources are normally automatically released by the system.
int	terminate (ca_client_context *cctLocal)
	Closes all channels within the given context and their respective handles Shuts down the given channel access client context and frees allocated resources contextDestroy is not essential as resources are normally automatically released by the system.
unsigned int	getHandleFromPV (const char *pv)
const char *	getPVFromHandle (unsigned int handle)
unsigned int	getHandleFromPVWithinGroup (const char *pv, unsigned int grh)
bool	isEnum (unsigned int handle)
bool	isValid (unsigned int handle)
bool	allChannelsConnected ()
bool	isConnected (unsigned int handle)
bool	isChannelConnected (unsigned int handle)
int	getChannelInfo (unsigned int handle, ChannelRegalia &channelInfo)
chid	getChannelID (unsigned int handle)
ca_client_context *	getClientContext (const char *pvname)
ca_client_context *	getClientContext (unsigned int handle)
int	attachContext (ca_client_context *ccc)
int	attachContextByPVName (const char *pvname)
int	attachContextByHandle (unsigned int handle)
int	updateAccessRead (unsigned int handle, int ar)
int	updateAccessWrite (unsigned int handle, int aw)
bool	getReadAccess (unsigned int handle)
bool	getWriteAccess (unsigned int handle)
void	printStatusMessage (int status)
int	printStatus (unsigned int handle, int status)
	print status information of given handle
int	printStatusIfError (unsigned int handle, int status)
	print status information of given handle only on error
int	printStatus (unsigned int handleArray, unsigned int nelem, int statusArray)
	print status information of given handles
int	printStatusIfError (unsigned int handleArray, unsigned int nelem, int statusArray)
	print status information of given handles only on error
int	printStatus (vector< unsigned int > handleV, vector< int > statusV)
	print status information of given handles
int	printStatusIfError (vector< unsigned int > handleV, vector< int > statusV)
	print status information of given handles only on error
int	setPVAlias (unsigned int handle, const char *pv) throw (CAFEException_open)
	Defines a pv alias for pv and adds this to multi-index hash table.
PVDataHolder *	getPVData (vector< unsigned int > handleArray)
	Creates a pseudo group from input handles and initalizes PVdataHolder array; \ method to be preceded by getV(v) and followed by e.g.getCachePVArrayNoWait(v, pvd).
int	collectionDefine (const char *collectionName, vector< string > deviceV)
	Connect::collectionDefine: Add collection to global vector, deviceCollectionV.
int	collectionDefine (const char collectionName, vector< const char > deviceV)
	Connect::collectionDefine: Add collection to global vector, deviceCollectionV.
int	collectionDefine (const char collectionName, pv_string_t deviceArray, unsigned int deviceLength)
	Connect::collectionDefine: Add collection to global vector, deviceCollectionV.
int	collectionFetch (const char *collectionName, vector< string > &deviceListV)
	Connect::collectionFetch - retrieves Collection.
int	collectionFetch (const char collectionName, vector< const char > &deviceListV)
	Connect::collectionFetch - retrieves Collection.
int	collectionFetch (const char *collectionName, deviceCollection &dC)
	Connect::collectionFetch - retrieves Collection.
vector< deviceCollection >	getCollections () const
int	collectionMemberList (const char *collectionName, boost::shared_ptr< pv_string_t[]> &list, unsigned int &listLength)
	Connect::collectionMemberList - lists the members of the given collection .
int	collectionList (boost::shared_ptr< pv_string_t[]> &clist, unsigned int &listLength)
	Connect::collectionList - lists all collection in global vector deviceCollectionV .
int	collectionMemberList (const char *collectionName, vector< string > &list)
	Connect::collectionMemberList - lists the members of the given collection.
int	collectionList (vector< string > &clist)
	Connect::collectionList - lists all collections in global vector deviceCollectionV.
int	fetchIndexOfCollectionMember (const char collectionName, const char deviceName)
	Connect::fetchIndexOfCollectionMember.
bool	isGroup (const char *)
	Connect::isGroup - Test const char * to determine if input 'name' is a garoup.
bool	isCollection (const char *)
	Connect::isCollection - Test const char * to determine if input 'name' is a collection.
int	groupOpen (const char *pv, unsigned int &groupHandle) throw (CAFEException_groupOpen)
	Establishes virtual circuit to epics process variable for each group member by calling Connect::open(pv, &handle).
int	groupOpen (PVGroup &pvgroup, unsigned int &groupHandle) throw (CAFEException_groupOpen)
int	groupClose (unsigned int groupHandle)
int	groupClose ()
int	groupCloseAll ()
int	groupHandleErase ()
int	groupHandleErase (ca_client_context *ccc)
int	groupCombine (const char newGroupName, const char groupName1, const char *groupName2)
	Connect::groupCombine - Combines two groups to form a new group.
int	groupCombine (const char newGroupName, vector< char > groupName)
	Connect::groupCombine - Combines individual groups to form a new group.
vector< string >	generateChannelList (vector< string > inputStringV)
vector< string >	getFromGlobalChannelList (vector< string >)
int	groupDefine (const char groupName, const char collectionName, vector< string > attributeV)
	Connect::groupDefine.
int	groupDefine (const char groupName, const char collectionName, vector< const char * > attributeV)
	Connect::groupDefine.
int	groupDefine (const char groupName, const char collectionName, pv_string_t *attributeArray, unsigned short attributeLength)
	Connect::groupDefine.
int	groupDefine (const char groupName, const char collectionName, pv_string_t attribute)
int	groupDefine (const char *groupName, vector< string > deviceV, vector< string > attributeV)
	Connect::groupDefine.
int	groupDefine (const char groupName, vector< const char > deviceV, vector< const char * > attributeV)
	Connect::groupDefine.
int	groupDefine (const char groupName, pv_string_t deviceArray, unsigned int deviceLength, pv_string_t *attributeArray, unsigned short attributeLength)
	Connect::groupDefine.
int	groupDefine (const char *groupName, vector< string > pvArrayV)
	Connect::groupDefine.
int	groupDefine (const char groupName, vector< const char > pvArrayV)
	Connect::groupDefine.
int	groupDefine (const char groupName, pv_string_t pvArray, unsigned int pvArrayLength)
	Connect::groupDefine.
int	groupMemberList (const char *groupName, boost::shared_ptr< pv_string_t[]> &list, unsigned int &listLength)
	Connect::groupMemberList - lists the members of the given group User responsible for deleting list array.
int	groupList (boost::shared_ptr< pv_string_t[]> &glist, unsigned int &listLength)
	Connect::groupList - lists all groups in global vector PVGroupV .
int	groupMemberList (const char *groupName, vector< string > &list)
	Connect::groupMemberList - lists the members of the given group.
int	groupList (vector< string > &glist)
	Connect::groupList - lists all groups in global vector PVGroupV.
int	fetchIndexOfGroupMember (const char groupName, const char pv)
	Connect::fetchIndexOfGroupMember.
void	setDeviceAttributeDeliminator (std::string d)
std::string	getDeviceAttributeDeliminator () const
Public Attributes
ChannelOpenPolicy	channelOpenPolicy
ChannelOpenPolicy	channelClosePolicy
ChannelOpenPolicy	channelMonitorPolicy
ChannelOpenPolicy	channelOpenGroupPolicy
Protected Member Functions
int	createChannel (unsigned int handle, const char *pv, chid &pCh)
int	createHandle (const char pv, ca_client_context ccc, unsigned int &handle) throw (CAFEException_pv)
int	contextDestroy ()
	Shuts down a channel access client context and frees allocated resources Not essential as resources are normally automatically released by the system. This invokes the connection_handler callback function.
int	contextDestroy (ca_client_context *cctLocal)
	Closes channels for the given channel access client context. Shuts down the 'local' channel access client context and frees allocated resources Note that in thread:stop, these two contexts are different!! Not essential as resources are normally automatically released by the system. This invokes the connection_handler callback function.
unsigned short	epicsVersion (unsigned short &major, unsigned short &minor, unsigned short &patch)
int	createChannelWithinGroup (unsigned int handle, const char *pv, chid &pCh)
int	createHandleWithinGroup (const char pv, ca_client_context ccc, unsigned int &_handle) throw (CAFEException_pv)
	Connect::createHandleWithinGroup.
Static Protected Member Functions
static void	callbackHandlerAccessRights (struct access_rights_handler_args args)
static void	callbackHandlerException (struct exception_handler_args args)
Protected Attributes
int	status
CAFEStatus	cafeStatus
CAFEStatusSeverity	cafeStatusSeverity
cafeConduit_set::iterator	itcs
cafeGroup_set::iterator	itgs
CAFEDataTypeCode	cafeDataTypeCode
ExceptionsHelper	exceptionsHelper
ChannelCreatePolicy	channelCreatePolicy
PolicyHelper	policyHelper
HandleHelper	handleHelper
Helper	helper
std::string	deviceAttributeDeliminator
bool	pyCafeFlag

Constructor & Destructor Documentation

Connect::Connect ( ) [inline]

References channelMonitorPolicy, channelOpenGroupPolicy, channelOpenPolicy, DEFAULT_DEVICE_ATTRIBUTE_DELIMINATOR, DEFAULT_TIMEOUT_PEND_EVENT, DEFAULT_TIMEOUT_PEND_IO, DEFAULT_TIMEOUT_SG_PEND_EVENT, deviceAttributeDeliminator, CAFENUM::FLUSH_AFTER_EACH_CHANNEL_CREATION, CAFENUM::FLUSH_AFTER_EACH_CHANNEL_SUBSCRIPTION, CAFENUM::FLUSH_AFTER_EACH_GROUP_CREATION, pyCafeFlag, ChannelOpenPolicy::setPolicy(), CAFENUM::WITH_FLUSH_IO, and CAFENUM::WITH_PEND_EVENT.

Member Function Documentation

int Connect::_ca_flush_io ( ) [inline]

int Connect::_ca_pend_event ( double t ) [inline]

int Connect::_ca_pend_io ( double t ) [inline]

int Connect::_ca_poll ( ) [inline]

bool Connect::allChannelsConnected ( ) [inline]

References cs, and itcs.

int Connect::attachContext ( ca_client_context * ccc ) [inline]

References ECAFE_NULLCONTEXT.

int Connect::attachContextByHandle ( unsigned int handle ) [inline]

References ECAFE_NULLCONTEXT, and getClientContext().

int Connect::attachContextByPVName ( const char * pvname ) [inline]

References ECAFE_NULLCONTEXT, and getClientContext().

void Connect::callbackHandlerAccessRights ( struct access_rights_handler_args args ) [static, protected]

Callback function for callbackHandlerAccessRights
Modifies Conduit object accordingly
Callback handler for the event of a change of R/W access rights
R3.14 documentation states that the callback handler is called

whenever CA connects the channel, immediately BEFORE the channel's connection handler is called
whenever CA disconnects the channel, immediately AFTER the channel's disconnect callback handler is called
once immediately after installation if the channel is connected
whenever the access rights of a connected channel changes

Parameters:

args output: access_rights_handler_args parameters

References cafeMutex, cs, long, and MUTEX.

Referenced by createChannel(), and createChannelWithinGroup().

void Connect::callbackHandlerException ( struct exception_handler_args args ) [static, protected]

Callback function for callbackHandlerException Modifies CAFEConduit object accordingly

Parameters:

args

output: exception_handler_args parameters

References long, and PVNAME_SIZE.

Referenced by createChannel(), and createChannelWithinGroup().

int Connect::close ( ) [inline]

References closeChannels().

Referenced by closeChannel(), createHandle(), and createHandleWithinGroup().

int Connect::close ( unsigned int handle )

Closes connection for channel within a ca_client_context and deletes corresponding handle
The handle must be within the same context.
Note that this does NOT cause the channel's disconnect handler to be called.
It does however invoke event handlers for subscriptions (i.e. monitors).
The Conduit handle is erased.

Parameters:

handle

input

Returns:: ECA_NORMAL if all OK

References cafeMutex, channelClosePolicy, cs, ECAFE_INVALID_HANDLE, ECAFE_NULLCONTEXT, ECAFE_WRONG_CA_CONTEXT, ChannelOpenPolicy::getTimeout(), ICAFE_NORMAL, itcs, MUTEX, and status.

int Connect::closeChannel ( unsigned int handle ) [inline]

References close().

int Connect::closeChannels ( ca_client_context * cctLocal )

Closes all channel connections within the given ca_client_context and removes the corresponding handles.
Note that this does NOT cause the channel's disconnect handler to be called.
It does however invoke event subscriptions (for monitors).
Corresponding Conduit handles are erased.

Returns:: ECA_NORMAL if all OK; error if one or more channelIDs fail to close

References cafeMutex, channelClosePolicy, cs, ECAFE_NULLCONTEXT, ChannelOpenPolicy::getTimeout(), ICAFE_NORMAL, itcs, MUTEX, and status.

int Connect::closeChannels ( )

Closes all channel connections within a ca_client_context and removes the corresponding handles.
Note that this does NOT cause the channel's disconnect handler to be called.
It does however invoke event subscriptions (for monitors).
Corresponding Conduit handles are erased.

Returns:: ECA_NORMAL if all OK; error if one or more channelIDs fail to close

References ECAFE_NULLCONTEXT.

Referenced by close(), closeChannels(), closeChannelsV(), contextDestroy(), and terminate().

int Connect::closeChannels ( vector< unsigned int > v ) [inline]

References closeChannels(), and status.

int Connect::closeChannels	(	unsigned int *	handleArray,
		unsigned int	nHandles
	)

Closes connection for channel within a ca_client_context and deletes corresponding handle
The handle must be within the same context.
Note that this does NOT cause the channel's disconnect handler to be called.
It does however invoke event handlers for subscriptions (i.e., monitors).
The Conduit handle is erased.

Parameters:

	handleArray	input: array of handles
	nHandles	input: size of array

Returns:: ECA_NORMAL if all OK else first encountered error

References cafeMutex, channelClosePolicy, cs, ECAFE_NULLCONTEXT, ChannelOpenPolicy::getTimeout(), ICAFE_NORMAL, MUTEX, and status.

int Connect::closeChannelsV ( vector< unsigned int > v ) [inline]

References closeChannels(), and status.

int Connect::closeHandle ( unsigned int handle )

Closes channel connections (even if in other thread) and deletes handle.
Note that this does NOT cause the channel's disconnect handler to be called.
It does however invoke event handlers for subscriptions (i.e. monitors).
The Conduit handle is erased.

Parameters:

handle

input

Returns:: ECA_NORMAL if all OK

References cafeMutex, channelClosePolicy, cs, ECAFE_INVALID_HANDLE, ChannelOpenPolicy::getTimeout(), ICAFE_NORMAL, itcs, MUTEX, and status.

int Connect::closeHandles ( )

Closes all channel connections (even if in other threads) and deletes all handles.
Note that this does NOT cause the channel's disconnect handler to be called.
It does however invoke event subscriptions (for monitors).
All Conduit handles are erased.

Returns:: ECA_NORMAL if all OK; error if one or more channelIDs fail to close

References cafeMutex, channelClosePolicy, cs, ChannelOpenPolicy::getTimeout(), itcs, MUTEX, and status.

Referenced by groupClose(), and terminate().

int Connect::closeHandles	(	unsigned int *	handleArray,
		unsigned int	nHandles
	)

Closes given channel connections (even if in other threads) and deletes their handles.
Note that this does NOT cause the channel's disconnect handler to be called.
It does however invoke event subscriptions (for monitors).
All corresponding Conduit handles are erased.

Parameters:

	handleArray	input: unsigned int *
	nHandles	input: unsigned int

Returns:: ECA_NORMAL if all OK; error if one or more channelIDs fail to close

References cafeMutex, channelClosePolicy, cs, ChannelOpenPolicy::getTimeout(), ICAFE_NORMAL, itcs, MUTEX, and status.

int Connect::collectionDefine	(	const char *	collectionName,
		pv_string_t *	deviceList,
		unsigned int	deviceListLength
	)

Connect::collectionDefine: Add collection to global vector, deviceCollectionV.

Parameters:

	collectionName	input: define collection name
	deviceList	input: array of pv_string_t that comprises the collection of devices
	deviceListLength	input: size of deviceList array

Returns:: ICAFE_NORMAL

References deviceCollection::cMembers, deviceCollectionV, collectionMember::deviceName, ECAFE_COLLECTION_PREV_DEF, ICAFE_NORMAL, and deviceCollection::name.

int Connect::collectionDefine	(	const char *	collectionName,
		vector< const char * >	deviceListV
	)

Connect::collectionDefine: Add collection to global vector, deviceCollectionV.

Parameters:

	collectionName	input: define collection name
	deviceListV	input: vector list of const char * that comprise the collection of devices

Returns:: ICAFE_NORMAL

References deviceCollection::cMembers, deviceCollectionV, collectionMember::deviceName, ECAFE_COLLECTION_PREV_DEF, ICAFE_NORMAL, and deviceCollection::name.

int Connect::collectionDefine	(	const char *	collectionName,
		vector< string >	deviceListV
	)

Connect::collectionDefine: Add collection to global vector, deviceCollectionV.

Parameters:

	collectionName	input: define collection name
	deviceListV	input: vector list of strings that comprise the collection of devices

Returns:: ICAFE_NORMAL

References deviceCollection::cMembers, deviceCollectionV, collectionMember::deviceName, ECAFE_COLLECTION_PREV_DEF, ICAFE_NORMAL, and deviceCollection::name.

int Connect::collectionFetch	(	const char *	collectionName,
		deviceCollection &	dC
	)

Connect::collectionFetch - retrieves Collection.

Parameters:

	collectionName	input: collection name
	dC	ouput: deviceCollection class

Returns:: ICAFE_NORMAL else ECAFE_UNKNOWN_COLLECTION

References deviceCollectionV, ECAFE_UNKNOWN_COLLECTION, helper, ICAFE_NORMAL, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::collectionFetch	(	const char *	collectionName,
		vector< const char * > &	deviceListV
	)

Connect::collectionFetch - retrieves Collection.

Parameters:

	collectionName	input: collection name
	deviceListV	ouput: vector of const char * containing collection members

Returns:: ICAFE_NORMAL else ECAFE_UNKNOWN_COLLECTION, ECAFE_EMPTY_COLLECTION

References deviceCollectionV, ECAFE_EMPTY_COLLECTION, ECAFE_UNKNOWN_COLLECTION, helper, ICAFE_NORMAL, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::collectionFetch	(	const char *	collectionName,
		vector< string > &	deviceListV
	)

Connect::collectionFetch - retrieves Collection.

Parameters:

	collectionName	input: collection name
	deviceListV	ouput: vector of strings containing collection members

Returns:: ICAFE_NORMAL else ECAFE_UNKNOWN_COLLECTION, ECAFE_EMPTY_COLLECTION

References deviceCollectionV, ECAFE_EMPTY_COLLECTION, ECAFE_UNKNOWN_COLLECTION, helper, ICAFE_NORMAL, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

Referenced by groupDefine().

int Connect::collectionList ( vector< string > & clist )

Connect::collectionList - lists all collections in global vector deviceCollectionV.

Parameters:

clist

output: vector of collection names (string)

Returns:: ICAFE_NORMAL

References deviceCollectionV, and ICAFE_NORMAL.

int Connect::collectionList	(	boost::shared_ptr< pv_string_t[]> &	clist,
		unsigned int &	listLength
	)

Connect::collectionList - lists all collection in global vector deviceCollectionV
.

Parameters:

	clist	output: array of collection names (pv_string_t)
	listLength	output: length of clist array

Returns:: ICAFE_NORMAL

References deviceCollectionV, and ICAFE_NORMAL.

int Connect::collectionMemberList	(	const char *	collectionName,
		vector< string > &	list
	)

Connect::collectionMemberList - lists the members of the given collection.

Parameters:

	collectionName	input: name of collection
	list	output: vector of devices (string)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_UNKNOWN_COLLECTION

References deviceCollectionV, ECAFE_UNKNOWN_COLLECTION, helper, ICAFE_NORMAL, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::collectionMemberList	(	const char *	collectionName,
		boost::shared_ptr< pv_string_t[]> &	list,
		unsigned int &	listLength
	)

Connect::collectionMemberList - lists the members of the given collection
.

Parameters:

	collectionName	input: name of Collection
	list	output: array of device names (pv_string_t)
	listLength,:	length of list array

Returns:: ICAFE_NORMAL is all OK else, ECAFE_UNKNOWN_COLLECTION

References deviceCollectionV, ECAFE_UNKNOWN_COLLECTION, helper, ICAFE_NORMAL, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::contextDestroy ( ca_client_context * cctLocal ) [protected]

Closes channels for the given channel access client context.
Shuts down the 'local' channel access client context and frees allocated resources
Note that in thread:stop, these two contexts are different!!
Not essential as resources are normally automatically released by the system.
This invokes the connection_handler callback function.

Returns:: ECA_NORMAL if all OK or ECAFE_NULLCONTEXT if ca client context does not exist

References closeChannels(), ECAFE_NULLCONTEXT, and ICAFE_NORMAL.

int Connect::contextDestroy ( ) [protected]

Shuts down a channel access client context and frees allocated resources Not essential as resources are normally automatically released by the system. This invokes the connection_handler callback function.

Returns:: ECA_NORMAL if all OK or ECAFE_NULLCONTEXT if ca client context does not exist

References closeChannels(), ECAFE_NULLCONTEXT, and ICAFE_NORMAL.

Referenced by terminate().

int Connect::createChannel	(	unsigned int	handle,
		const char *	pv,
		chid &	pCh
	)			`[protected]`

Connect::createChannel

Establishes virtual circuit to epics process variable

Parameters:

	handle	input
	pv	input: process variable
	pCh	output: channel identifier (chid)

Returns:: status ECA_NORMAL if all OK else ECA_BADTYPE, ECA_STRTOBIG, ECA_ALLOCMEM

References __METHOD__, ADD_EXCEPTION_EVENT, cafeMutex, cafeStatus, callbackHandlerAccessRights(), callbackHandlerException(), channelCreatePolicy, channelOpenPolicy, cs, ECAFE_INVALID_HANDLE, CAFENUM::FLUSH_AFTER_EACH_CHANNEL_CREATION, ChannelOpenPolicy::flushSendBufferNow(), ChannelCreatePolicy::getHandler(), ChannelCreatePolicy::getPriority(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), MUTEX, CAFEStatus::report(), and status.

int Connect::createChannelWithinGroup	(	unsigned int	_handle,
		const char *	pv,
		chid &	pCh
	)			`[protected]`

Connect::createChannelWithinGroup (as for createChannel)

Establishes virtual circuit to epics process variable

Parameters:

	_handle	input
	pv	input: process variable
	pCh	output: channel identifier (chid)

Returns:: status ECA_NORMAL if all OK else ECA_BADTYPE, ECA_STRTOBIG, ECA_ALLOCMEM

References __METHOD__, ADD_EXCEPTION_EVENT, cafeMutex, cafeStatus, callbackHandlerAccessRights(), callbackHandlerException(), channelCreatePolicy, cs, ECAFE_INVALID_HANDLE, ChannelCreatePolicy::getHandler(), ChannelCreatePolicy::getPriority(), MUTEX, CAFEStatus::report(), and status.

int Connect::createHandle	(	const char *	pv,
		ca_client_context *	ccc,
		unsigned int &	handle
	)			throw (CAFEException_pv) `[protected]`

Connect::createHandle

Creates handle and calls createChannel to establish virtual circuit to epics process variable

Parameters:

	pv	input: process variable
	ccc	input: ca_client_context
	handle	input: handle

Exceptions:

CAFEException_pv

if unable to create channel virtual circuit

Returns:: status ICAFE_NORMAL if all OK

Conduit cc = *(p.first);

_handle=cc.getHandle();

References __METHOD__, cafeMutex, close(), cs, ECAFE_HASH_UNIQUEID_EXISTS, ECAFE_NULLCHID, Conduit::handleNext, and MUTEX.

int Connect::createHandleWithinGroup	(	const char *	pv,
		ca_client_context *	ccc,
		unsigned int &	_handle
	)			throw (CAFEException_pv) `[protected]`

Connect::createHandleWithinGroup.

Parameters:

	pv	input: process variable
	ccc	input: ca_client_context
	_handle	input: handle

Returns:: status

References __METHOD__, cafeMutex, close(), cs, ECAFE_HASH_UNIQUEID_EXISTS, ECAFE_NULLCHID, Conduit::handleNext, ICAFE_NORMAL, and MUTEX.

MonitorPolicy* Connect::createMonitorPolicyArray ( const unsigned int nmp ) [inline]

unsigned short Connect::epicsVersion	(	unsigned short &	major,
		unsigned short &	minor,
		unsigned short &	patch
	)			`[protected]`

Connect::epicsVersion

Establishes virtual circuit to epics process variable

Parameters:

	major	input
	minor	input
	patch	input

Returns:: 31412 for v3.14.12

References EPICS_MAJOR, EPICS_MINOR, and EPICS_PATCH.

int Connect::fetchIndexOfCollectionMember	(	const char *	collectionName,
		const char *	deviceName
	)

Connect::fetchIndexOfCollectionMember.

Parameters:

	collectionName	input: collection name
	deviceName	input: (const char *) device name

Returns:: index of device in collection; else -1 if error

References deviceCollectionV, helper, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::fetchIndexOfGroupMember	(	const char *	groupName,
		const char *	pv
	)

Connect::fetchIndexOfGroupMember.

Parameters:

	groupName	input: group name
	pv	input: (const char *) process variable

Returns:: index of pvdata for pv within group; else -1 if error

References helper, PVGroupV, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

vector<string> Connect::generateChannelList ( vector< string > inputStringV ) [inline]

References getFromGlobalChannelList().

CAFEStatus Connect::getCafeStatus ( ) [inline]

References cafeStatus.

Referenced by printStatusMessage().

CAFEStatusSeverity Connect::getCafeStatusSeverity ( ) [inline]

References cafeStatusSeverity.

chid Connect::getChannelID ( unsigned int handle ) [inline]

References cs.

int Connect::getChannelInfo	(	unsigned int	handle,
		ChannelRegalia &	channelInfo
	)			`[inline]`

References cs, ECAFE_INVALID_HANDLE, and ICAFE_NORMAL.

Referenced by CAFE::get(), CAFE::getCache(), and CAFE::set().

ca_client_context* Connect::getClientContext ( unsigned int handle ) [inline]

References HandleHelper::getContextFromHandle(), and handleHelper.

ca_client_context* Connect::getClientContext ( const char * pvname ) [inline]

References HandleHelper::getContextFromPV(), and handleHelper.

Referenced by attachContextByHandle(), and attachContextByPVName().

vector<deviceCollection> Connect::getCollections ( ) const [inline]

References deviceCollectionV.

std::string Connect::getDeviceAttributeDeliminator ( ) const [inline]

References deviceAttributeDeliminator.

unsigned int Connect::getDisconnectedHandles	(	vector< unsigned int > &	dhV,
		vector< string > &	pvV
	)			`[inline]`

References HandleHelper::getDisconnectedHandles(), and handleHelper.

vector< string > Connect::getFromGlobalChannelList ( vector< string > searchList )

References globalChannelList.

Referenced by generateChannelList().

unsigned int Connect::getHandleFromPV ( const char * pv ) [inline]

References HandleHelper::getHandleFromPV(), and handleHelper.

Referenced by main().

unsigned int Connect::getHandleFromPVWithinGroup	(	const char *	pv,
		unsigned int	grh
	)			`[inline]`

References HandleHelper::getHandleFromPVWithinGroup(), and handleHelper.

HandleHelper Connect::getHandleHelper ( ) [inline]

References handleHelper.

Referenced by CAFE::getCache(), main(), and CAFE::snapshot2XML().

HandleHelper Connect::getInfo ( ) [inline]

References handleHelper.

Referenced by CAFE::snapshot2XML().

unsigned int Connect::getNelemClient ( unsigned int h ) [inline]

References HandleHelper::getNelemClient(), and handleHelper.

unsigned int Connect::getNelemNative ( unsigned int h ) [inline]

References HandleHelper::getNelemNative(), and handleHelper.

Referenced by main().

unsigned int Connect::getNelemRequest ( unsigned int h ) [inline]

References HandleHelper::getNelemRequest(), and handleHelper.

Referenced by main().

double Connect::getOpenDefaultPendTime ( ) [inline]

References channelOpenPolicy, and ChannelOpenPolicy::getDefaultTimeout().

PolicyHelper Connect::getPolicy ( ) [inline]

References policyHelper.

PolicyHelper Connect::getPolicyHelper ( ) [inline]

References policyHelper.

PVDataHolder * Connect::getPVData ( vector< unsigned int > handleArray )

Creates a pseudo group from input handles and initalizes PVdataHolder array; \ method to be preceded by getV(v) and followed by e.g.getCachePVArrayNoWait(v, pvd).

Parameters:

handleArray

input: array of handles

Returns:: PVDataHolder *

References __METHOD__, PVHolder::alarmSeverity, PVHolder::alarmStatus, cafeStatus, cs, deviceAttributeDeliminator, ECAFE_INVALID_HANDLE, PVHolder::getAttribute(), PVHolder::getDevice(), PVGroup::getPVData(), HandleHelper::getPVFromHandle(), groupPseudoMap, handleHelper, helper, ICAFE_NORMAL, MemberMap::insert(), PVGroup::memberMap, PVGroup::name, PVGroup::npv, PVGroup::pvdata, PVGROUP_PSEUDO_SIZE, PVGroupPseudo, Helper::removeLeadingAndTrailingSpacesPseudo(), CAFEStatus::report(), PVDataHolder::setNelem(), PVHolder::status, status, and PVDataHolder::ts.

const char* Connect::getPVFromHandle ( unsigned int handle ) [inline]

References HandleHelper::getPVFromHandle(), and handleHelper.

Referenced by main().

bool Connect::getPyCafe ( ) [inline]

References pyCafeFlag.

bool Connect::getReadAccess ( unsigned int handle ) [inline]

References cs.

int Connect::getStatus ( void ) [inline]

References status.

Referenced by CAFE::snapshot2XML().

bool Connect::getWriteAccess ( unsigned int handle ) [inline]

References cs.

int Connect::groupClose ( )

Closes all channel connections associated within a group, for all groupHandles. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event subscriptions (for monitors). All Conduit handles are erased.

Returns:: ICAFE_NORMAL if all OK

References HandleHelper::getGroupHandleFromGroupName(), handleHelper, ICAFE_NORMAL, and PVGroupV.

Referenced by groupCloseAll().

int Connect::groupClose ( unsigned int groupHandle )

Closes all channel connections associated within a group, indentified by it's groupHandle. Note that this does NOT cause the channel's disconnect handler to be called. It does however invoke event subscriptions (for monitors). All Conduit handles are erased.

Parameters:

groupHandle

input

Returns:: ICAFE_NORMAL if all OK

References cafeMutex, closeHandles(), ECAFE_INVALID_GROUP_HANDLE, HandleHelper::getGroupNameFromGroupHandle(), gs, handleHelper, ICAFE_NORMAL, MUTEX, and PVGroupV.

int Connect::groupCloseAll ( ) [inline]

References groupClose().

int Connect::groupCombine	(	const char *	newGroupName,
		vector< char * >	groupNameV
	)

Connect::groupCombine - Combines individual groups to form a new group.

Parameters:

	newGroupName	input: new group name
	groupNameV	input: vector of groups

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF, ECAFE_UNKNOWN_GROUP

References ECAFE_GROUP_PREV_DEF, ECAFE_UNKNOWN_GROUP, helper, ICAFE_NORMAL, MemberMap::insert(), PVGroup::memberMap, PVGroup::name, PVGroup::npv, PVGroup::pvdata, PVGroupV, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::groupCombine	(	const char *	newGroupName,
		const char *	groupName1,
		const char *	groupName2
	)

Connect::groupCombine - Combines two groups to form a new group.

Parameters:

	newGroupName	input: new group name
	groupName1	input: already existing group
	groupName2	input: already existing group

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF, ECAFE_UNKNOWN_GROUP

References ECAFE_GROUP_PREV_DEF, ECAFE_UNKNOWN_GROUP, helper, ICAFE_NORMAL, MemberMap::insert(), PVGroup::memberMap, PVGroup::name, PVGroup::npv, PVGroup::pvdata, PVGroupV, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::groupDefine	(	const char *	groupName,
		pv_string_t *	pvArray,
		unsigned int	pvArrayLength
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	pvArray	input: array of process variables (pv_string_t)
	pvArrayLength,:	length of pvArray

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF

References deviceAttributeDeliminator, ECAFE_GROUP_PREV_DEF, ChannelDeviceAttribute::getAttribute(), ChannelDeviceAttribute::getDevice(), helper, ICAFE_NORMAL, ChannelDeviceAttribute::init(), MemberMap::insert(), PVGroup::memberMap, PVGroup::name, PVGroup::npv, PVGroup::pvdata, PVGroupV, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::groupDefine	(	const char *	groupName,
		vector< const char * >	pvArrayV
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	pvArrayV	input: vector of process varaibles (const char *)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF

References groupDefine(), and status.

int Connect::groupDefine	(	const char *	groupName,
		vector< string >	pvArrayV
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	pvArrayV	input: vector of process varaibles (string)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF

References groupDefine(), and status.

int Connect::groupDefine	(	const char *	groupName,
		pv_string_t *	deviceArray,
		unsigned int	nDevice,
		pv_string_t *	attributeArray,
		unsigned short	nAttribute
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	deviceArray	input: array of devices (pv_string_t)
	nDevice	input : size of device array
	attributeArray	input: array of attributes (pv_string_t *)
	nAttribute	input: size of attribute array

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF

References deviceAttributeDeliminator, groupDefine(), and status.

int Connect::groupDefine	(	const char *	groupName,
		vector< const char * >	deviceV,
		vector< const char * >	attributeV
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	deviceV	input: vector of devices (const char *)
	attributeV	input: vector of attributes (const char *)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF

References deviceAttributeDeliminator, groupDefine(), and status.

int Connect::groupDefine	(	const char *	groupName,
		vector< string >	deviceV,
		vector< string >	attributeV
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	deviceV	input: vector of devices (string)
	attributeV	input: vector of attributes (strig)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF

References deviceAttributeDeliminator, groupDefine(), and status.

int Connect::groupDefine	(	const char *	groupName,
		const char *	collectionName,
		pv_string_t	attribute
	)			`[inline]`

References groupDefine().

int Connect::groupDefine	(	const char *	groupName,
		const char *	collectionName,
		pv_string_t *	attributeArray,
		unsigned short	attributeLength
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	collectionName	input: name of already existing collection
	attributeArray	input: array of attributes (pv_string_t *)
	attributeLength	input: size of input array

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF, ECAFE_UNKNOWN_COLLECTION, ECAFE_EMPTY_COLLECTION

References collectionFetch(), groupDefine(), and ICAFE_NORMAL.

int Connect::groupDefine	(	const char *	groupName,
		const char *	collectionName,
		vector< const char * >	attributeV
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	collectionName	input: name of already existing collection
	attributeV	input: vector of attributes (const char *)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF, ECAFE_UNKNOWN_COLLECTION, ECAFE_EMPTY_COLLECTION

References collectionFetch(), groupDefine(), and ICAFE_NORMAL.

int Connect::groupDefine	(	const char *	groupName,
		const char *	collectionName,
		vector< string >	attributeV
	)

Connect::groupDefine.

Parameters:

	groupName	input: new group name
	collectionName	input: name of already existing collection
	attributeV	input: vector of attributes (string)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_GROUP_PREV_DEF, ECAFE_UNKNOWN_COLLECTION, ECAFE_EMPTY_COLLECTION

References collectionFetch(), and ICAFE_NORMAL.

Referenced by groupDefine().

int Connect::groupHandleErase ( ca_client_context * ccc )

Erases groupHandle (assumes associated connections are already closed) All Groupconduit handles are erased withingt the give ca_client_context

Parameters:

ccc

input: ca_client_context *

Returns:: ICAFE_NORMAL always

References cafeMutex, gs, ICAFE_NORMAL, itgs, and MUTEX.

int Connect::groupHandleErase ( )

Erases groupHandles All Groupconduit handles are erased

Returns:: ICAFE_NORMAL if all OK

References cafeMutex, gs, ICAFE_NORMAL, itgs, and MUTEX.

Referenced by terminate().

int Connect::groupList ( vector< string > & glist )

Connect::groupList - lists all groups in global vector PVGroupV.

Parameters:

glist

output: vector of group names (string)

Returns:: ICAFE_NORMAL

References ICAFE_NORMAL, and PVGroupV.

int Connect::groupList	(	boost::shared_ptr< pv_string_t[]> &	glist,
		unsigned int &	listLength
	)

Connect::groupList - lists all groups in global vector PVGroupV
.

Parameters:

	glist	output: shared_ptr to array of group names (pv_string_t)
	listLength,:	length of glist array

Returns:: ICAFE_NORMAL

References ICAFE_NORMAL, and PVGroupV.

int Connect::groupMemberList	(	const char *	groupName,
		vector< string > &	list
	)

Connect::groupMemberList - lists the members of the given group.

Parameters:

	groupName	input: group name
	list	output: vector of process variables (string)

Returns:: ICAFE_NORMAL is all OK else, ECAFE_UNKNOWN_GROUP

References ECAFE_UNKNOWN_GROUP, helper, ICAFE_NORMAL, PVGroupV, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

int Connect::groupMemberList	(	const char *	groupName,
		boost::shared_ptr< pv_string_t[]> &	list,
		unsigned int &	listLength
	)

Connect::groupMemberList - lists the members of the given group
User responsible for deleting list array.

Parameters:

	groupName	input: group name
	list	output: shared_ptr to array of process variables (pv_string_t)
	listLength,:	length of list array

Returns:: ICAFE_NORMAL is all OK else, ECAFE_UNKNOWN_GROUP

References ECAFE_UNKNOWN_GROUP, helper, ICAFE_NORMAL, PVGroupV, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

Referenced by CAFE::group2XML().

int Connect::groupOpen	(	PVGroup &	pvgroup,
		unsigned int &	groupHandle
	)			throw (CAFEException_groupOpen)

Establishes virtual circuit to epics process variable for each group member by calling Connect::open(pv, &handle)

Parameters:

	pvgroup	input/output: PVGroup object
	groupHandle	output: (unique) group handle

Exceptions:

CAFEException

re-throws CAFEException from open

Returns:: status ECA_NORMAL if OK

int Connect::groupOpen	(	const char *	groupName,
		unsigned int &	groupHandle
	)			throw (CAFEException_groupOpen)

Establishes virtual circuit to epics process variable for each group member by calling Connect::open(pv, &handle).

Parameters:

	groupName	input: (unique) name of the group
	groupHandle	output: (unique) group handle

Exceptions:

CAFEException_groupOpen

re-throws CAFEException from open

Returns:: status ECA_NORMAL if OK

References __METHOD__, cafeMutex, cs, DEFAULT_TIMEOUT_SG_PEND_EVENT, ECAFE_HASH_UNIQUEID_EXISTS, ECAFE_UNKNOWN_GROUP, CAFENUM::FLUSH_AFTER_EACH_GROUP_CREATION, CAFEException_groupOpen::groupEx, PVGroup::groupHandle, gs, CAFEException_pv::handle, ICAFE_NORMAL, init(), MUTEX, NMEMBER_PER_SEC_SG_PEND_EVENT, PVGroup::npv, CAFEException_pv::pv, PVHolder::pv, PVGroup::pvdata, PVGroupV, CAFEException_pv::statusCode, and CAFEException_pv::statusCodeText.

int Connect::init ( ca_preemptive_callback_select select ) throw (CAFEException_init)

Called once prior to making any channel access calls

Parameters:

select

input: enum ca_preemptive_callback_select
{ca_disable_preemptive_callback=0, ca_enable_preemptive_callback=1}

Exceptions:

CAFEbad_allocMem

ECA_ALLOCMEM if memory space could not be allocated

Returns:: status ECA_NORMAL if OK else else throws an exception

References __METHOD__, and initPyCafe().

int Connect::init ( ) throw (CAFEException_init)

Called once prior to making any channel access calls
Specifies that preemptive callback is allowed: ca_enable_preemptive_callback

Exceptions:

CAFEException_init

ECA_ALLOCMEM if memory space could not be allocated

Returns:: status ECA_NORMAL if OK else throws an exception

References __METHOD__, status, and CAFEException_init::what().

Referenced by groupOpen(), and main().

bool Connect::isChannelConnected ( unsigned int handle ) [inline]

References cs.

Referenced by isConnected().

bool Connect::isCollection ( const char * collectionID )

Connect::isCollection - Test const char * to determine if input 'name' is a collection.

Parameters:

collectionID

input: collection name

Returns:: trool or false

References deviceCollectionV, helper, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

bool Connect::isConnected ( unsigned int handle ) [inline]

References isChannelConnected().

bool Connect::isEnum ( unsigned int handle ) [inline]

References handleHelper, and HandleHelper::isEnum().

bool Connect::isGroup ( const char * groupID )

Connect::isGroup - Test const char * to determine if input 'name' is a garoup.

Parameters:

groupID

input: group name

Returns:: true or false

References helper, PVGroupV, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

bool Connect::isValid ( unsigned int handle ) [inline]

References cs, and itcs.

int Connect::monitorStart	(	vector< unsigned int >	handleV,
		vector< int > &	statusV,
		vector< unsigned int > &	monitorIDV
	)

Monitor an array of PV with default MonitorPolicy object parameters.

Parameters:

	handleV	input: Array of handles to conduit object
	statusV	output: Array of statuses
	monitorIDV	output: Array of unique MonitorIDs

Returns:: overallStatus: ICAFE_NORMAL if all OK else the first ECAFE error encountered

References channelMonitorPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), ICAFE_NORMAL, monitorStart(), and ChannelOpenPolicy::setWhenToFlushSendBuffer().

int Connect::monitorStart	(	vector< unsigned int >	handleV,
		vector< int > &	statusV,
		vector< MonitorPolicy > &	mpV
	)

Monitor an array of PV with parameters set by MonitorPolicy objects.

Parameters:

	handleV	input: Array of handles to conduit object
	statusV	output: Array of statuses
	mpV	input/output: Array of MonitorPolicy objects identifying the monitor subscription

Returns:: overallStatus: ICAFE_NORMAL if all OK else the first ECAFE error encountered

References __METHOD__, channelMonitorPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), ICAFE_NORMAL, monitorStart(), and ChannelOpenPolicy::setWhenToFlushSendBuffer().

int Connect::monitorStart	(	unsigned int *	handleArray,
		unsigned int	nelem,
		int *	statusArray,
		unsigned int *	monitorIDArray
	)

Monitor an array of PV with parameters with default policies.

Parameters:

	handleArray	input: Array of handles to conduit object
	nelem	input: Number of elements in the Array
	statusArray,:	Array of statuses
	monitorIDArray	output: Array of MonitorIDs to be used by monitorStop

Returns:: overallStatus: ICAFE_NORMAL if all OK else the first ECAFE error encountered

References channelMonitorPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), ICAFE_NORMAL, monitorStart(), and ChannelOpenPolicy::setWhenToFlushSendBuffer().

int Connect::monitorStart	(	unsigned int *	handleArray,
		unsigned int	nelem,
		int *	statusArray,
		MonitorPolicy *	mpArray
	)

Monitor an array of PV with parameters set by MonitorPolicy objects.

Parameters:

	handleArray	input: Array of handles to conduit object
	nelem	input: Number of elements in the Array
	statusArray,:	Array of statuses
	mpArray	input/output: Array of MonitorPolicy objects identifying the monitor subscription

Returns:: overallStatus: ICAFE_NORMAL if all OK else the first ECAFE error encountered

References channelMonitorPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), ICAFE_NORMAL, monitorStart(), and ChannelOpenPolicy::setWhenToFlushSendBuffer().

int Connect::monitorStart	(	unsigned int *	handleArray,
		unsigned int	nelem
	)			`[inline]`

References monitorStart(), and status.

int Connect::monitorStart ( unsigned int handle ) [inline]

References monitorStart().

int Connect::monitorStart	(	unsigned int	handle,
		unsigned int &	monitorID
	)

Monitor a PV.

Parameters:

	handle	input: handle
	monitorID	output: monitorID identifying the monitor subscription

Returns:: ICAFE_NORMAL if all OK else ECAFE error

References __METHOD__, cafeStatus, cs, ECAFE_INVALID_HANDLE, ECAFE_MAX_MONITORS_PER_CHAN_EXCEEDED, ECAFE_NULLEVID, MonitorPolicy::getEventID(), MonitorPolicy::getID(), ICAFE_CS_NEVER_CONN, ICAFE_NORMAL, int, MAX_NO_MONITORS_PER_CHANNEL, monitorStart(), CAFEStatus::report(), MonitorPolicy::setDataType(), MonitorPolicy::setNelem(), MonitorPolicy::setUserArgs(), and status.

int Connect::monitorStart	(	unsigned int	handle,
		MonitorPolicy &	mp
	)

Monitor a PV.

Parameters:

	handle	input: handle
	mp	input/output: MonitorPolicy object identifying the monitor subscription

Returns:: ICAFE_NORMAL if all OK else ECAFE error

References __METHOD__, CAFE_NOT_REQUESTED, cafeMutex, cafeStatus, channelMonitorPolicy, cs, ECAFE_INVALID_HANDLE, ECAFE_MAX_MONITORS_PER_CHAN_EXCEEDED, ECAFE_NULLEVID, CAFENUM::FLUSH_AFTER_EACH_CHANNEL_SUBSCRIPTION, ChannelOpenPolicy::flushSendBufferNow(), MonitorPolicy::getDataType(), MonitorPolicy::getEventID(), MonitorPolicy::getID(), MonitorPolicy::getNelem(), MonitorPolicy::getUserArgs(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), ICAFE_MONITOR_DELAYED_AS_CONN_DOWN, ICAFE_NORMAL, MAX_NO_MONITORS_PER_CHANNEL, MUTEX, CAFEStatus::report(), MonitorPolicy::setDataType(), MonitorPolicy::setNelem(), MonitorPolicy::setStatus(), MonitorPolicy::setUserArgs(), and status.

Referenced by CAFE::groupMonitorStart(), Instant< CTYPE >::matchMany(), monitorStart(), Instant< CTYPE >::setAndMatch(), and Instant< CTYPE >::setAndMatchMany().

int Connect::monitorStop	(	unsigned int *	handleArray,
		unsigned int	nelem
	)			`[inline]`

References monitorStop(), and status.

int Connect::monitorStop	(	vector< unsigned int >	handleV,
		vector< int > &	statusV
	)

Stop all monitors for a vector of handles.

Parameters:

	handleV	input: vector of handles
	statusV	output: vector of statuses

Returns:: overallStatus: ICAFE_NORMAL if all OK else ECAFE error of first reported failure

References ICAFE_NORMAL, and monitorStop().

int Connect::monitorStop	(	unsigned int *	handleArray,
		unsigned int	nelem,
		int *	statusArray
	)

Stop all monitors for this array of handles.

Parameters:

	handleArray	input: array of handle
	nelem	input: array of elements
	statusArray	output: array of statuses

Returns:: overallStatus: ICAFE_NORMAL if all OK else ECAFE error of first reported failure

References ICAFE_NORMAL, and monitorStop().

int Connect::monitorStop ( ca_client_context * cctLocal )

Stop all monitors for the given ca_client_context.

Returns:: ICAFE_NORMAL if all OK else ECAFE error

References channelClosePolicy, cs, ECAFE_NULLCONTEXT, ChannelOpenPolicy::getTimeout(), itcs, monitorStop(), and status.

int Connect::monitorStop ( )

Stop all monitors.

Returns:: ICAFE_NORMAL if all OK else ECAFE error

References channelClosePolicy, cs, ChannelOpenPolicy::getTimeout(), itcs, and status.

Referenced by CAFE::groupMonitorStop(), monitorStop(), monitorStopAll(), monitorStopWithID(), and terminate().

int Connect::monitorStop ( unsigned int handle )

Stop all monitors for this handle.

Parameters:

handle

input: handle

Returns:: ICAFE_NORMAL if all OK else ECAFE error

References __METHOD__, cafeMutex, cafeStatus, channelMonitorPolicy, cs, ECAFE_INVALID_HANDLE, ECAFE_NULLEVID, CAFENUM::FLUSH_AFTER_EACH_CHANNEL_SUBSCRIPTION, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), ICAFE_NORMAL, int, MUTEX, CAFEStatus::report(), and status.

int Connect::monitorStop	(	unsigned int	handle,
		unsigned int	monitorID
	)

Stop monitor of a PV.

Parameters:

	handle	input: handle
	monitorID	input: monitorID identifying the monitor subscription

Returns:: ICAFE_NORMAL if all OK else ECAFE error

References __METHOD__, cafeMutex, cafeStatus, channelMonitorPolicy, cs, ECAFE_INVALID_HANDLE, ECAFE_NULLEVID, CAFENUM::FLUSH_AFTER_EACH_CHANNEL_SUBSCRIPTION, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::getWhenToFlushSendBuffer(), ICAFE_NORMAL, MUTEX, CAFEStatus::report(), and status.

int Connect::monitorStop	(	unsigned int	handle,
		MonitorPolicy	mp
	)

Stop monitor of a PV.

Parameters:

	handle	input: handle
	mp	input: MonitorPolicy identifying the monitor subscription

Returns:: ICAFE_NORMAL if all OK else ECAFE error

References MonitorPolicy::getMonitorID(), and monitorStop().

Referenced by Instant< CTYPE >::matchMany(), Instant< CTYPE >::setAndMatch(), and Instant< CTYPE >::setAndMatchMany().

int Connect::monitorStopAll ( ) [inline]

References monitorStop().

int Connect::monitorStopWithID	(	unsigned int	handle,
		unsigned int	monitorID
	)			`[inline]`

References monitorStop().

int Connect::open	(	vector< string >	pvV,
		vector< unsigned int > &	handleV
	)			throw (CAFEException_open)

Establishes virtual circuits for a vector of epics process variables

Check if handle already exists for given pv/ca_client_context
If yes, nothing further to do, else create channel
Determine connection status and properties of the pv
Create CAFEConduit object and add to multi-index hash table
.

Parameters:

	pvV	input: vector of process variables (string)
	handleV	output: vector of reference handle to Conduit objects

Exceptions:

CAFEException_open

if unable to create channel virtual circuit

Returns:: status ICAFE_NORMAL if OK

References CAFENUM::FLUSH_AFTER_EACH_CHANNEL_CREATION, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, and ICAFE_NORMAL.

int Connect::open	(	vector< const char * >	pvV,
		vector< unsigned int > &	handleV
	)			throw (CAFEException_open)

Establishes virtual circuits for a vector of epics process variables

Check if handle already exists for given pv/ca_client_context
If yes, nothing further to do, else create channel
Determine connection status and properties of the pv
Create CAFEConduit object and add to multi-index hash table
.

Parameters:

	pvV	input: vector of process variables (char *)
	handleV	output: vector of reference handle to Conduit objects

Exceptions:

CAFEException_open

if unable to create channel virtual circuit

Returns:: status ICAFE_NORMAL if OK

References CAFENUM::FLUSH_AFTER_EACH_CHANNEL_CREATION, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, and ICAFE_NORMAL.

int Connect::open	(	const char **	pvArray,
		unsigned int *	handleArray,
		const unsigned int	nHandles
	)			throw (CAFEException_open)

Establishes virtual circuits for a vector of epics process variables

Check if handle already exists for given pv/ca_client_context
If yes, nothing further to do, else create channel
Determine connection status and properties of the pv
Create CAFEConduit object and add to multi-index hash table
.

Parameters:

	pvArray	input: array of process variables (PVNAME_SIZE)
	handleArray	output: array of reference handle to Conduit objects
	nHandles	input: size of pvArray

Exceptions:

CAFEException_open

if unable to create channel virtual circuit

Returns:: status ICAFE_NORMAL if OK

References CAFENUM::FLUSH_AFTER_EACH_CHANNEL_CREATION, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, and ICAFE_NORMAL.

int Connect::open	(	const char *	_pv,
		const char *	_pvAlias,
		unsigned int &	handle
	)			throw (CAFEException_open)

Establishes virtual circuit to epics process variable and defines its pv alias name

Check if handle already exists for given pv/ca_client_context
If yes, nothing further to do, else create channel
Determine connection status and properties of the pv
Create Conduit object and add to multi-index hash table
.

Parameters:

	_pv	input: process variable
	_pvAlias	input: process variable alias
	handle	output: reference handle to Conduit object

Exceptions:

CAFEException_pvOpen

if unable to create channel virtual circuit

Returns:: status ICAFE_NORMAL if OK

int Connect::open	(	const char *	_pv,
		unsigned int &	handle
	)			throw (CAFEException_open)

Establishes virtual circuit to epics process variable

Check if handle already exists for given pv/ca_client_context
If yes, nothing further to do, else create channel
Determine connection status and properties of the pv
Create Conduit object and add to multi-index hash table
.

Parameters:

	_pv	input: process variable
	handle	output: reference handle to Conduit object

Exceptions:

CAFEException_pvOpen

if unable to create channel virtual circuit

Returns:: status ICAFE_NORMAL if OK

References __METHOD__, ICAFE_NORMAL, CAFEException_open::pvEx, and PVNAME_SIZE.

int Connect::open	(	const string *	pvArrayS,
		unsigned int *	handleArray,
		const unsigned int	nHandles
	)			throw (CAFEException_open)

Establishes virtual circuits for a vector of epics process variables

Check if handle already exists for given pv/ca_client_context
If yes, nothing further to do, else create channel
Determine connection status and properties of the pv
Create CAFEConduit object and add to multi-index hash table
.

Parameters:

	pvArrayS	input: array of process variables givenas "strings"
	handleArray	output: array of reference handle to Conduit objects
	nHandles	input: size of pvArray

Exceptions:

CAFEException_open

if unable to create channel virtual circuit

Returns:: status ICAFE_NORMAL if OK

References CAFENUM::FLUSH_AFTER_EACH_CHANNEL_CREATION, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, and ICAFE_NORMAL.

int Connect::open	(	const string	pvS,
		const std::string	pvAliasS,
		unsigned int &	handle
	)			throw (CAFEException_open) `[inline]`

References open().

int Connect::open	(	const string	pvS,
		unsigned int &	handle
	)			throw (CAFEException_open) `[inline]`

Referenced by CAFE::get(), CAFE::getCtrl(), main(), open(), openV(), and CAFE::set().

void Connect::openGroupNowAndWait ( double _timeout ) [inline]

References channelOpenGroupPolicy, CAFENUM::FLUSH_NOW, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setTimeout(), ChannelOpenPolicy::setTimeoutToDefault(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_PEND_EVENT.

void Connect::openGroupPrepare ( ) [inline]

References channelOpenGroupPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_PEND_EVENT.

void Connect::openMonitorNow ( ) [inline]

References channelMonitorPolicy, CAFENUM::FLUSH_NOW, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_FLUSH_IO.

void Connect::openMonitorNowAndWait ( double _timeout ) [inline]

References channelMonitorPolicy, CAFENUM::FLUSH_NOW, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setTimeout(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_FLUSH_IO.

void Connect::openMonitorPrepare ( ) [inline]

References channelMonitorPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_FLUSH_IO.

void Connect::openNow ( ) [inline]

References channelOpenPolicy, CAFENUM::FLUSH_NOW, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_PEND_EVENT.

void Connect::openNoWait ( ) [inline]

References channelOpenPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_PEND_EVENT.

void Connect::openNowAndWait ( double _timeout ) [inline]

References channelOpenPolicy, CAFENUM::FLUSH_NOW, ChannelOpenPolicy::flushSendBufferNow(), ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setTimeout(), ChannelOpenPolicy::setTimeoutToDefault(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_PEND_EVENT.

void Connect::openPrepare ( ) [inline]

References channelOpenPolicy, CAFENUM::FLUSH_DESIGNATED_TO_CLIENT, ChannelOpenPolicy::setFlushSendBufferKind(), ChannelOpenPolicy::setWhenToFlushSendBuffer(), and CAFENUM::WITH_PEND_EVENT.

int Connect::openV	(	vector< string >	s,
		vector< unsigned int > &	i
	)			throw (CAFEException_open) `[inline]`

References open().

void Connect::printCAFEException_pv ( CAFEException_pv & e ) [inline]

References exceptionsHelper, and ExceptionsHelper::printCAFEException_pv().

unsigned int Connect::printDisconnectedHandles ( void ) [inline]

References handleHelper, and HandleHelper::printDisconnectedHandles().

unsigned int Connect::printHandle ( unsigned int h ) [inline]

References handleHelper, and HandleHelper::printHandle().

unsigned int Connect::printHandles ( void ) [inline]

References handleHelper, and HandleHelper::printHandles().

int Connect::printStatus	(	vector< unsigned int >	handleV,
		vector< int >	statusV
	)

print status information of given handles

Parameters:

	handleV	input: vector of handles to conduit objects
	statusV	input: vector of statuses

Returns:: ECA_NORMAL if all OK else ECAFE_INVALID_HANDLE (if one or more handles are invalid)

References ICAFE_NORMAL, and printStatus().

int Connect::printStatus	(	unsigned int *	handleArray,
		unsigned int	nelem,
		int *	statusArray
	)

print status information of given handles

Parameters:

	handleArray	input: array of handles to conduit objects
	nelem	input: size of array of handles
	statusArray	input: array of statuses

Returns:: ECA_NORMAL if all OK else ECAFE_INVALID_HANDLE (if one or more handles are invalid)

References ICAFE_NORMAL, and printStatus().

int Connect::printStatus	(	unsigned int	handle,
		int	status
	)

print status information of given handle

Parameters:

	handle	input: handle to Conduit object
	status	input: reporting status

Returns:: ECA_NORMAL if all OK else ECAFE_INVALID_HANDLE

References cafeStatus, cs, ECAFE_INVALID_HANDLE, ICAFE_NORMAL, and CAFEStatus::report().

Referenced by main(), printStatus(), and printStatusIfError().

int Connect::printStatusIfError	(	vector< unsigned int >	handleV,
		vector< int >	statusV
	)

print status information of given handles only on error

Parameters:

	handleV	input: vector of Handles to Conduit objects
	statusV	input: vector of statuses

Returns:: ECA_NORMAL if all OK else ECAFE_INVALID_HANDLE (if one or more handles are invalid)

References ICAFE_NORMAL, and printStatus().

int Connect::printStatusIfError	(	unsigned int *	handleArray,
		unsigned int	nelem,
		int *	statusArray
	)

print status information of given handles only on error

Parameters:

	handleArray	input: array of Handles to Conduit objects
	nelem	input: size of array of handles
	statusArray	input: array of statuses

Returns:: ECA_NORMAL if all OK else ECAFE_INVALID_HANDLE (if one or more handles are invalid)

References ICAFE_NORMAL, and printStatus().

int Connect::printStatusIfError	(	unsigned int	handle,
		int	status
	)

print status information of given handle only on error

Parameters:

	handle	input: handle to Conduit object
	status	input: reporting status

Returns:: ECA_NORMAL if all OK else ECAFE_INVALID_HANDLE

References ICAFE_NORMAL, and printStatus().

void Connect::printStatusMessage ( int status ) [inline]

References CAFEStatus::csc, CAFEStatus::csi, getCafeStatus(), CAFEStatusCode::message(), and CAFEStatusInfo::message().

void Connect::setDeviceAttributeDeliminator ( std::string d ) [inline]

References deviceAttributeDeliminator.

double Connect::setOpenDefaultPendTime ( double _timeout ) [inline]

References channelOpenPolicy, and ChannelOpenPolicy::setDefaultTimeout().

int Connect::setPVAlias	(	unsigned int	handle,
		const char *	_pvAlias
	)			throw (CAFEException_open)

Defines a pv alias for pv and adds this to multi-index hash table.

Parameters:

	handle	input: handle
	_pvAlias	input: process variable alias

Exceptions:

CAFEException_pvOopen

if unable to set an alias

Returns:: status ICAFE_NORMAL if OK

References __METHOD__, cafeMutex, cs, ECAFE_INVALID_HANDLE, ECAFE_PVALIAS_INVALID, ECAFE_PVALIAS_PREV_DEF, ICAFE_NORMAL, MUTEX, CAFEException_open::pvEx, PVNAME_SIZE, and Helper::removeLeadingAndTrailingSpaces().

bool Connect::setPyCafe ( bool b ) [inline]

References pyCafeFlag.

int Connect::terminate ( ca_client_context * cctLocal )

Closes all channels within the given context and their respective handles
Shuts down the given channel access client context and frees allocated resources
contextDestroy is not essential as resources are normally automatically released by the system.

Returns:: ECA_NORMAL if all OK or ECAFE_NULLCONTEXT if ca client context does not exist

References cafeStatus, closeChannels(), contextDestroy(), ECAFE_NULLCONTEXT, groupHandleErase(), ICAFE_NORMAL, monitorStop(), and CAFEStatus::report().

int Connect::terminate ( )

Closes all channels within a given context and all handles for all contexts
Shuts down the local channel access client context and frees allocated resources
contextDestroy is not essential as resources are normally automatically released by the system.