HubPort (on a string hub) that turns a gridconnect-formatted CAN packet into a binary CAN packet, and sends them off to the HubFlow (of CAN frame). More...

Inheritance diagram for GCAdapter::GCToBinaryMember:

Public Member Functions
	GCToBinaryMember (Service service, CanHubFlow destination, CanHubPort *skip_member)
	Constructor.

bool	shutdown_ready ()

CanHubFlow *	destination ()

Action	entry () override
	Takes more characters from the pending incoming buffer.

Action	parse_more_data ()
	Matches the incoming characters to the pattern to form incoming frames.

Action	parse_to_output_frame ()
	Takes the completed frame in cbuf_, parses it into the allocation result (a can pipe buffer) and sends off frame.

Public Member Functions inherited from StateFlow< MessageType, QueueType >
	StateFlow (Service *service)
	Constructor.

Public Member Functions inherited from TypedStateFlow< MessageType, UntypedStateFlow< QueueType > >
	TypedStateFlow (Service *service)
	Constructor.

virtual	~TypedStateFlow ()
	Destructor.

void	send (MessageType *msg, unsigned priority=UINT_MAX) OVERRIDE
	Sends a message to the state flow for processing.

Public Member Functions inherited from UntypedStateFlow< QueueType >
	UntypedStateFlow (Service *service)
	Constructor.

Public Member Functions inherited from StateFlowWithQueue
void	notify () override
	Wakeup call arrived. Schedules *this on the executor.

bool	is_waiting ()

Public Member Functions inherited from StateFlowBase
void	run () override
	Callback from the executor.

Service *	service ()
	Return a pointer to the service I am bound to.

Public Member Functions inherited from Executable
void	test_deletion ()

Public Member Functions inherited from QMember
void	init ()
	Initiailize a QMember, in place of a public placement construction.

Public Member Functions inherited from LinkedObject< StateFlowWithQueue >
StateFlowWithQueue *	link_next ()

Public Member Functions inherited from FlowInterface< MessageType >
virtual Pool *	pool ()

virtual MessageType *	type_helper ()
	This function is never user in the code, but GDB can use it to infer the correct message types.

MessageType *	alloc ()
	Synchronously allocates a message buffer from the pool of this flow.

void	alloc_async (Executable *target)
	Asynchronously allocates a message buffer from the pool of this flow.

Private Attributes
GcStreamParser	streamSegmenter_
	Holds the state of the incoming characters and the boundary.

const char *	inBuf_
	The incoming characters.

size_t	inBufSize_
	The remaining number of characters in inBuf_.

std::unique_ptr< LimitedPool >	frameAllocator_

CanHubFlow *	destination_
	Pipe to send data to.

CanHubPortInterface *	skipMember_
	The pipe member that should be sent as "source".

Additional Inherited Members
Public Types inherited from TypedStateFlow< MessageType, UntypedStateFlow< QueueType > >
typedef Base::Action	Action
	Allows using Action without having StateFlowBase:: prefix in front of it.

Public Types inherited from FlowInterface< MessageType >
typedef MessageType	message_type
	Stores the message template type for external reference.

Static Public Member Functions inherited from StateFlowBase
template<class T , typename... Args>
static void	invoke_subflow_and_ignore_result (FlowInterface< Buffer< T > > *target_flow, Args &&... args)
	Calls a helper flow to perform some actions.

Static Public Member Functions inherited from LinkedObject< StateFlowWithQueue >
static StateFlowWithQueue *	link_head ()

static Atomic *	head_mu ()
	Locks the list for modification (at any entry!).

Static Public Member Functions inherited from FlowInterface< MessageType >
static MessageType *	cast_alloc (QMember *entry)
	Down casts and initializes an asynchronous allocation result to the appropriate flow's buffer type.

Protected Types inherited from UntypedStateFlow< QueueType >
typedef Action(StateFlowBase::*	Callback) ()
	State Flow callback prototype.

Protected Types inherited from StateFlowBase
typedef Action(StateFlowBase::*	Callback) ()
	State Flow callback prototype.

Protected Member Functions inherited from TypedStateFlow< MessageType, UntypedStateFlow< QueueType > >
void	release () OVERRIDE
	Unrefs the current buffer.

void	return_buffer ()
	For state flows that are operated using invoke_subflow_and_wait this is a way to hand back the buffer to the caller.

MessageType *	message ()

MessageType *	transfer_message ()
	Releases ownership of the current message.

Protected Member Functions inherited from UntypedStateFlow< QueueType >
void	send (BufferBase *msg, unsigned priority=UINT_MAX)
	Sends a message to the state flow for processing.

QMember *	queue_next (unsigned *priority) OVERRIDE
	Takes the front entry in the queue.

bool	queue_empty () OVERRIDE

Action	call_immediately (Callback c)
	Imediately call the next state upon return.

Protected Member Functions inherited from StateFlowWithQueue
	StateFlowWithQueue (Service *service)
	Constructor.

Action	exit ()
	Terminates the processing of this flow.

Action	release_and_exit ()
	Terminates the processing of the current message.

BufferBase *	message ()

BufferBase *	transfer_message ()
	Releases ownership of the current message.

void	reset_message (BufferBase *message, unsigned priority)
	Sets the current message being processed.

unsigned	priority ()

void	set_priority (unsigned priority)
	Overrides the current priority.

void	start_flow_at_init (Callback c)
	Call this from the constructor of the child class to do some work before the main queue processing loop begins.

Protected Member Functions inherited from StateFlowBase
	StateFlowBase (Service *service)
	Constructor.

	~StateFlowBase ()
	Destructor.

void	reset_flow (Callback c)
	Resets the flow to the specified state.

bool	is_state (Callback c)

bool	is_terminated ()

void	start_flow (Callback c)
	Resets the flow to the specified state and starts it.

Action	again ()
	Call the current state again via call_immediately.

Action	exit ()
	Terminate current StateFlow activity.

Action	delete_this ()
	Terminates the flow and deletes *this.

Action	set_terminated ()
	Sets the flow to terminated state.

Action	call_immediately (Callback c)
	Imediately call the next state upon return.

Action	wait ()
	Wait for an asynchronous call.

Action	wait_and_call (Callback c)
	Wait for resource to become available before proceeding to next state.

template<class T >
Action	allocate_and_call (FlowInterface< Buffer< T > > target_flow, Callback c, Pool pool=nullptr)
	Allocates a buffer from a pool and proceed to the next state when allocation is successful.

Action	allocate_and_call (Callback c, QAsync *queue)
	Allocates an entry from an asynchronous queue, and transitions to a state once the allocation is complete.

template<class T >
Buffer< T > *	full_allocation_result (FlowInterface< Buffer< T > > *target_flow)
	Takes the result of the asynchronous allocation without resetting the object.

template<class T >
T *	full_allocation_result (TypedQAsync< T > *queue)
	Takes the result of the asynchronous allocation without resetting the object.

template<class T >
void	cast_allocation_result (T **member)
	Takes the result of the asynchronous allocation without resetting the object.

template<class T >
Buffer< T > *	get_allocation_result (FlowInterface< Buffer< T > > *target_flow)
	Takes the result of the asynchronous allocation.

Action	yield_and_call (Callback c)
	Place the current flow to the back of the executor, and transition to a new state after we get the CPU again.

Action	yield ()
	Place the current flow to the back of the executor, and re-try the current state after we get the CPU again.

Action	sleep_and_call (::Timer *timer, long long timeout_nsec, Callback c)
	Suspends execution of this control flow for a specified time.

template<class T , typename... Args>
Action	invoke_subflow_and_wait (FlowInterface< Buffer< T > > *target_flow, Callback c, Args &&... args)
	Calls a helper flow to perform some actions.

Action	read_repeated (StateFlowSelectHelper helper, int fd, void buf, size_t size, Callback c, unsigned priority=Selectable::MAX_PRIO)
	Blocks until size bytes are read and then invokes the next state.

Action	read_single (StateFlowSelectHelper helper, int fd, void buf, size_t size, Callback c, unsigned priority=Selectable::MAX_PRIO)
	Attempts to read at most size_t bytes, and blocks the caller until at least one byte is read.

Action	read_nonblocking (StateFlowSelectHelper helper, int fd, void buf, size_t size, Callback c, unsigned priority=Selectable::MAX_PRIO)
	Attempts to read at most size bytes, and then invokes the next state, even if only zero bytes are available right now.

Action	read_repeated_with_timeout (StateFlowTimedSelectHelper helper, long long timeout_nsec, int fd, void buf, size_t size, Callback c, unsigned priority=Selectable::MAX_PRIO)
	Blocks until size bytes are read, or a timeout expires.

Action	internal_try_read ()
	Implementation state that gets repeatedly called upon every wakeup and tries to make progress on reading.

Action	write_repeated (StateFlowSelectHelper helper, int fd, const void buf, size_t size, Callback c, unsigned priority=Selectable::MAX_PRIO)
	Writes some data into a file descriptor, repeating the operation as necessary until all bytes are written.

Action	internal_try_write ()
	Implementation state that gets repeatedly called upon every wakeup and tries to make progress on writing.

Protected Member Functions inherited from QMember
	QMember ()
	Constructor.

	~QMember ()
	Destructor.

Protected Member Functions inherited from Atomic
void	lock ()

void	unlock ()

Protected Member Functions inherited from LinkedObject< StateFlowWithQueue >
StateFlowWithQueue *	link_this ()

	LinkedObject ()
	Constructor. Puts *this on the linked list.

	~LinkedObject ()
	Constructor. Removes *this from the linked list.

StateFlowWithQueue *	link_next ()

Static Protected Member Functions inherited from LinkedObject< StateFlowWithQueue >
static StateFlowWithQueue *	link_head ()

static Atomic *	head_mu ()
	Locks the list for modification (at any entry!).

Protected Attributes inherited from QMember
QMember *	next
	pointer to the next member in the queue

Protected Attributes inherited from LinkedObject< StateFlowWithQueue >
StateFlowWithQueue *	link_
	Linked list pointer.

Static Protected Attributes inherited from LinkedObject< StateFlowWithQueue >
static StateFlowWithQueue *	head_
	Beginning of the list.

Detailed Description

HubPort (on a string hub) that turns a gridconnect-formatted CAN packet into a binary CAN packet, and sends them off to the HubFlow (of CAN frame).

Definition at line 236 of file GridConnectHub.cxx.

Constructor & Destructor Documentation

◆ GCToBinaryMember()

GCAdapter::GCToBinaryMember::GCToBinaryMember	(	Service *	service,
		CanHubFlow *	destination,
		CanHubPort *	skip_member
	)

inline

Constructor.

Parameters

service	defines the executor to run on.
destination	Where to write converted binary packets.
skip_member	what to set skipMember_ of the outgoing packets to.

Definition at line 245 of file GridConnectHub.cxx.

Member Function Documentation

◆ destination()

CanHubFlow * GCAdapter::GCToBinaryMember::destination ( )

inline

Returns: the destination to write data to.

Definition at line 277 of file GridConnectHub.cxx.

◆ entry()

Action GCAdapter::GCToBinaryMember::entry ( )

inlineoverridevirtual

Takes more characters from the pending incoming buffer.

Returns: next state

Implements TypedStateFlow< MessageType, UntypedStateFlow< QueueType > >.

Definition at line 283 of file GridConnectHub.cxx.

◆ parse_more_data()

Action GCAdapter::GCToBinaryMember::parse_more_data ( )

inline

Matches the incoming characters to the pattern to form incoming frames.

Returns: next state.

Definition at line 292 of file GridConnectHub.cxx.

◆ parse_to_output_frame()

Action GCAdapter::GCToBinaryMember::parse_to_output_frame ( )

inline

Takes the completed frame in cbuf_, parses it into the allocation result (a can pipe buffer) and sends off frame.

Then comes back to process buffer.

Returns: next state.

Definition at line 311 of file GridConnectHub.cxx.

◆ shutdown_ready()

bool GCAdapter::GCToBinaryMember::shutdown_ready ( )

inline

Returns: true when this object can be deleted. This is typically once all outgoing packets are released back to the pool, and there is no incoming data processing happening.

Definition at line 262 of file GridConnectHub.cxx.

Member Data Documentation

◆ destination_

CanHubFlow* GCAdapter::GCToBinaryMember::destination_

private

Pipe to send data to.

Definition at line 343 of file GridConnectHub.cxx.

◆ frameAllocator_

std::unique_ptr<LimitedPool> GCAdapter::GCToBinaryMember::frameAllocator_

private

Definition at line 338 of file GridConnectHub.cxx.

◆ inBuf_

const char* GCAdapter::GCToBinaryMember::inBuf_

private

The incoming characters.

Definition at line 332 of file GridConnectHub.cxx.

◆ inBufSize_

size_t GCAdapter::GCToBinaryMember::inBufSize_

private

The remaining number of characters in inBuf_.

Definition at line 334 of file GridConnectHub.cxx.

◆ skipMember_

CanHubPortInterface* GCAdapter::GCToBinaryMember::skipMember_

private

The pipe member that should be sent as "source".

Definition at line 345 of file GridConnectHub.cxx.

◆ streamSegmenter_

GcStreamParser GCAdapter::GCToBinaryMember::streamSegmenter_

private

Holds the state of the incoming characters and the boundary.

Definition at line 329 of file GridConnectHub.cxx.

The documentation for this class was generated from the following file:

GridConnectHub.cxx

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GCToBinaryMember()

Member Function Documentation

◆ destination()

◆ entry()

◆ parse_more_data()

◆ parse_to_output_frame()

◆ shutdown_ready()

Member Data Documentation

◆ destination_

◆ frameAllocator_

◆ inBuf_

◆ inBufSize_

◆ skipMember_

◆ streamSegmenter_