BroadcasterImpl contains the actual Broadcaster implementation. More...

#include <Broadcaster.h>

Public Member Functions
	BroadcasterImpl (Broadcaster &broadcaster)

	~BroadcasterImpl ()=default

void	BroadcastEvent (lldb::EventSP &event_sp)

void	BroadcastEventIfUnique (lldb::EventSP &event_sp)

void	BroadcastEvent (uint32_t event_type)

void	BroadcastEvent (uint32_t event_type, const lldb::EventDataSP &event_data_sp)

void	BroadcastEventIfUnique (uint32_t event_type)

void	Clear ()

uint32_t	AddListener (const lldb::ListenerSP &listener_sp, uint32_t event_mask)

const std::string &	GetBroadcasterName () const

Broadcaster *	GetBroadcaster ()

bool	GetEventNames (Stream &s, const uint32_t event_mask, bool prefix_with_broadcaster_name) const

void	SetEventName (uint32_t event_mask, const char *name)

const char *	GetEventName (uint32_t event_mask) const

bool	EventTypeHasListeners (uint32_t event_type)

void	SetPrimaryListener (lldb::ListenerSP listener_sp)

bool	RemoveListener (lldb_private::Listener *listener, uint32_t event_mask=UINT32_MAX)

bool	RemoveListener (const lldb::ListenerSP &listener_sp, uint32_t event_mask=UINT32_MAX)

bool	HijackBroadcaster (const lldb::ListenerSP &listener_sp, uint32_t event_mask=UINT32_MAX)

bool	IsHijackedForEvent (uint32_t event_mask)

void	RestoreBroadcaster ()

Protected Types
typedef llvm::SmallVector< std::pair< lldb::ListenerWP, uint32_t >, 4 >	collection

typedef std::map< uint32_t, std::string >	event_names_map

Protected Member Functions
void	PrivateBroadcastEvent (lldb::EventSP &event_sp, bool unique)

const char *	GetHijackingListenerName ()

llvm::SmallVector< std::pair< lldb::ListenerSP, uint32_t & >, 4 >	GetListeners (uint32_t event_mask=UINT32_MAX, bool include_primary=true)

bool	HasListeners (uint32_t event_mask)

Protected Attributes
Broadcaster &	m_broadcaster
	The broadcaster that this implements.

event_names_map	m_event_names
	Optionally define event names for readability and logging for each event bit.

collection	m_listeners
	A Broadcaster can have zero, one or many listeners.

std::mutex	m_listeners_mutex
	A mutex that protects m_listeners.

lldb::ListenerSP	m_primary_listener_sp
	See the discussion of Broadcasters and Listeners above.

uint32_t	m_primary_listener_mask = UINT32_MAX

std::vector< lldb::ListenerSP >	m_hijacking_listeners
	A simple mechanism to intercept events from a broadcaster.

std::vector< uint32_t >	m_hijacking_masks
	At some point we may want to have a stack or Listener collections, but for now this is just for private hijacking.

Private Member Functions
	BroadcasterImpl (const BroadcasterImpl &)=delete

const BroadcasterImpl &	operator= (const BroadcasterImpl &)=delete

Friends
class	Listener

class	Broadcaster

Detailed Description

BroadcasterImpl contains the actual Broadcaster implementation.

The Broadcaster makes a BroadcasterImpl which lives as long as it does. The Listeners & the Events hold a weak pointer to the BroadcasterImpl, so that they can survive if a Broadcaster they were listening to is destroyed w/o their being able to unregister from it (which can happen if the Broadcasters & Listeners are being destroyed on separate threads simultaneously. The Broadcaster itself can't be shared out as a weak pointer, because some things that are broadcasters (e.g. the Target and the Process) are shared in their own right.

For the most part, the Broadcaster functions dispatch to the BroadcasterImpl, and are documented in the public Broadcaster API above.

Definition at line 336 of file Broadcaster.h.

Member Typedef Documentation

◆ collection

typedef llvm::SmallVector<std::pair<lldb::ListenerWP, uint32_t>, 4> lldb_private::Broadcaster::BroadcasterImpl::collection

protected

Definition at line 404 of file Broadcaster.h.

◆ event_names_map

typedef std::map<uint32_t, std::string> lldb_private::Broadcaster::BroadcasterImpl::event_names_map

protected

Definition at line 405 of file Broadcaster.h.

Constructor & Destructor Documentation

◆ BroadcasterImpl() [1/2]

Broadcaster::BroadcasterImpl::BroadcasterImpl ( Broadcaster & broadcaster )

Definition at line 34 of file Broadcaster.cpp.

◆ ~BroadcasterImpl()

lldb_private::Broadcaster::BroadcasterImpl::~BroadcasterImpl ( )

default

◆ BroadcasterImpl() [2/2]

lldb_private::Broadcaster::BroadcasterImpl::BroadcasterImpl ( const BroadcasterImpl & )

privatedelete

Member Function Documentation

◆ AddListener()

uint32_t Broadcaster::BroadcasterImpl::AddListener	(	const lldb::ListenerSP &	listener_sp,
		uint32_t	event_mask
	)

Definition at line 135 of file Broadcaster.cpp.

References UINT32_MAX.

◆ BroadcastEvent() [1/3]

void Broadcaster::BroadcasterImpl::BroadcastEvent ( lldb::EventSP & event_sp )

Definition at line 227 of file Broadcaster.cpp.

◆ BroadcastEvent() [2/3]

void Broadcaster::BroadcasterImpl::BroadcastEvent ( uint32_t event_type )

Definition at line 303 of file Broadcaster.cpp.

◆ BroadcastEvent() [3/3]

void Broadcaster::BroadcasterImpl::BroadcastEvent	(	uint32_t	event_type,
		const lldb::EventDataSP &	event_data_sp
	)

Definition at line 308 of file Broadcaster.cpp.

◆ BroadcastEventIfUnique() [1/2]

void Broadcaster::BroadcasterImpl::BroadcastEventIfUnique ( lldb::EventSP & event_sp )

Definition at line 231 of file Broadcaster.cpp.

◆ BroadcastEventIfUnique() [2/2]

void Broadcaster::BroadcasterImpl::BroadcastEventIfUnique ( uint32_t event_type )

Definition at line 314 of file Broadcaster.cpp.

◆ Clear()

void Broadcaster::BroadcasterImpl::Clear ( )

Definition at line 89 of file Broadcaster.cpp.

◆ EventTypeHasListeners()

bool Broadcaster::BroadcasterImpl::EventTypeHasListeners ( uint32_t event_type )

Definition at line 173 of file Broadcaster.cpp.

◆ GetBroadcaster()

Broadcaster * Broadcaster::BroadcasterImpl::GetBroadcaster ( )

Definition at line 101 of file Broadcaster.cpp.

◆ GetBroadcasterName()

const std::string & lldb_private::Broadcaster::BroadcasterImpl::GetBroadcasterName ( ) const

inline

Definition at line 361 of file Broadcaster.h.

References lldb_private::Broadcaster::GetBroadcasterName(), and m_broadcaster.

◆ GetEventName()

const char * lldb_private::Broadcaster::BroadcasterImpl::GetEventName ( uint32_t event_mask ) const

inline

Definition at line 374 of file Broadcaster.h.

References m_event_names.

◆ GetEventNames()

bool Broadcaster::BroadcasterImpl::GetEventNames	(	Stream &	s,
		const uint32_t	event_mask,
		bool	prefix_with_broadcaster_name
	)		const

Definition at line 105 of file Broadcaster.cpp.

References bit, lldb_private::Broadcaster::GetBroadcasterName(), lldb_private::Stream::PutChar(), and lldb_private::Stream::PutCString().

◆ GetHijackingListenerName()

const char * Broadcaster::BroadcasterImpl::GetHijackingListenerName ( )

protected

Definition at line 351 of file Broadcaster.cpp.

◆ GetListeners()

llvm::SmallVector< std::pair< ListenerSP, uint32_t & >, 4 > Broadcaster::BroadcasterImpl::GetListeners	(	uint32_t	event_mask = `UINT32_MAX`,
		bool	include_primary = `true`
	)

protected

Definition at line 53 of file Broadcaster.cpp.

◆ HasListeners()

bool Broadcaster::BroadcasterImpl::HasListeners ( uint32_t event_mask )

protected

Definition at line 77 of file Broadcaster.cpp.

◆ HijackBroadcaster()

bool Broadcaster::BroadcasterImpl::HijackBroadcaster	(	const lldb::ListenerSP &	listener_sp,
		uint32_t	event_mask = `UINT32_MAX`
	)

Definition at line 328 of file Broadcaster.cpp.

References lldb_private::Events, lldb_private::Broadcaster::GetBroadcasterName(), lldb_private::GetLog(), and LLDB_LOG.

◆ IsHijackedForEvent()

bool Broadcaster::BroadcasterImpl::IsHijackedForEvent ( uint32_t event_mask )

Definition at line 343 of file Broadcaster.cpp.

◆ operator=()

const BroadcasterImpl & lldb_private::Broadcaster::BroadcasterImpl::operator= ( const BroadcasterImpl & )

privatedelete

◆ PrivateBroadcastEvent()

void Broadcaster::BroadcasterImpl::PrivateBroadcastEvent	(	lldb::EventSP &	event_sp,
		bool	unique
	)

protected

Definition at line 235 of file Broadcaster.cpp.

References lldb_private::Events, lldb_private::Broadcaster::GetBroadcasterName(), lldb_private::StreamString::GetData(), lldb_private::GetLog(), and LLDB_LOG.

◆ RemoveListener() [1/2]

bool Broadcaster::BroadcasterImpl::RemoveListener	(	const lldb::ListenerSP &	listener_sp,
		uint32_t	event_mask = `UINT32_MAX`
	)

Definition at line 222 of file Broadcaster.cpp.

References lldb_private::Broadcaster::RemoveListener().

◆ RemoveListener() [2/2]

bool Broadcaster::BroadcasterImpl::RemoveListener	(	lldb_private::Listener *	listener,
		uint32_t	event_mask = `UINT32_MAX`
	)

Definition at line 186 of file Broadcaster.cpp.

◆ RestoreBroadcaster()

void Broadcaster::BroadcasterImpl::RestoreBroadcaster ( )

Definition at line 358 of file Broadcaster.cpp.

References lldb_private::Events, lldb_private::Broadcaster::GetBroadcasterName(), lldb_private::GetLog(), and LLDB_LOG.

◆ SetEventName()

void lldb_private::Broadcaster::BroadcasterImpl::SetEventName	(	uint32_t	event_mask,
		const char *	name
	)

inline

Definition at line 370 of file Broadcaster.h.

References m_event_names.

◆ SetPrimaryListener()

void Broadcaster::BroadcasterImpl::SetPrimaryListener ( lldb::ListenerSP listener_sp )

Definition at line 319 of file Broadcaster.cpp.

References lldb_private::Broadcaster::RemoveListener(), and UINT32_MAX.

Friends And Related Function Documentation

◆ Broadcaster

friend class Broadcaster

friend

Definition at line 338 of file Broadcaster.h.

◆ Listener

friend class Listener

friend

Definition at line 337 of file Broadcaster.h.

Member Data Documentation

◆ m_broadcaster

Broadcaster& lldb_private::Broadcaster::BroadcasterImpl::m_broadcaster

protected

The broadcaster that this implements.

Definition at line 413 of file Broadcaster.h.

Referenced by GetBroadcasterName().

◆ m_event_names

event_names_map lldb_private::Broadcaster::BroadcasterImpl::m_event_names

protected

Optionally define event names for readability and logging for each event bit.

Definition at line 417 of file Broadcaster.h.

Referenced by GetEventName(), and SetEventName().

◆ m_hijacking_listeners

std::vector<lldb::ListenerSP> lldb_private::Broadcaster::BroadcasterImpl::m_hijacking_listeners

protected

A simple mechanism to intercept events from a broadcaster.

Definition at line 453 of file Broadcaster.h.

◆ m_hijacking_masks

std::vector<uint32_t> lldb_private::Broadcaster::BroadcasterImpl::m_hijacking_masks

protected

At some point we may want to have a stack or Listener collections, but for now this is just for private hijacking.

Definition at line 457 of file Broadcaster.h.

◆ m_listeners

collection lldb_private::Broadcaster::BroadcasterImpl::m_listeners

protected

A Broadcaster can have zero, one or many listeners.

A Broadcaster with zero listeners is a no-op, with one Listener is trivial. In most cases of multiple Listeners,the Broadcaster treats all its Listeners as equal, sending each event to all of the Listeners in no guaranteed order. However, some Broadcasters - in particular the Process broadcaster, can designate one Listener to be the "Primary Listener". In the case of the Process Broadcaster, the Listener passed to the Process constructor will be the Primary Listener. If the broadcaster has a Primary Listener, then the event gets sent first to the Primary Listener, and then when the Primary Listener pulls the event and the the event's DoOnRemoval finishes running, the event is forwarded to all the other Listeners. The other wrinkle is that a Broadcaster may be serving a Hijack Listener. If the Hijack Listener is present, events are only sent to the Hijack Listener. We use that, for instance, to absorb all the events generated by running an expression so that they don't show up to the driver or UI as starts and stops. If a Broadcaster has both a Primary and a Hijack Listener, the top-most Hijack Listener is treated as the current Primary Listener. A list of Listener / event_mask pairs that are listening to this broadcaster.

Definition at line 442 of file Broadcaster.h.

◆ m_listeners_mutex

std::mutex lldb_private::Broadcaster::BroadcasterImpl::m_listeners_mutex

protected

A mutex that protects m_listeners.

Definition at line 445 of file Broadcaster.h.

◆ m_primary_listener_mask

uint32_t lldb_private::Broadcaster::BroadcasterImpl::m_primary_listener_mask = UINT32_MAX

protected

Definition at line 450 of file Broadcaster.h.

◆ m_primary_listener_sp

lldb::ListenerSP lldb_private::Broadcaster::BroadcasterImpl::m_primary_listener_sp

protected

See the discussion of Broadcasters and Listeners above.

Definition at line 448 of file Broadcaster.h.

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

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Private Member Functions

Friends

Detailed Description

Member Typedef Documentation

◆ collection

◆ event_names_map

Constructor & Destructor Documentation

◆ BroadcasterImpl() [1/2]

◆ ~BroadcasterImpl()

◆ BroadcasterImpl() [2/2]

Member Function Documentation

◆ AddListener()

◆ BroadcastEvent() [1/3]

◆ BroadcastEvent() [2/3]

◆ BroadcastEvent() [3/3]

◆ BroadcastEventIfUnique() [1/2]

◆ BroadcastEventIfUnique() [2/2]

◆ Clear()

◆ EventTypeHasListeners()

◆ GetBroadcaster()

◆ GetBroadcasterName()

◆ GetEventName()

◆ GetEventNames()

◆ GetHijackingListenerName()

◆ GetListeners()

◆ HasListeners()

◆ HijackBroadcaster()

◆ IsHijackedForEvent()

◆ operator=()

◆ PrivateBroadcastEvent()

◆ RemoveListener() [1/2]

◆ RemoveListener() [2/2]

◆ RestoreBroadcaster()

◆ SetEventName()

◆ SetPrimaryListener()

Friends And Related Function Documentation

◆ Broadcaster

◆ Listener

Member Data Documentation

◆ m_broadcaster

◆ m_event_names

◆ m_hijacking_listeners

◆ m_hijacking_masks

◆ m_listeners

◆ m_listeners_mutex

◆ m_primary_listener_mask

◆ m_primary_listener_sp