sf::Thread Class Reference

Thread wrapper class to be used for attachment to an existing thread or a new to be created thread. This class can only be used to derive from since the constructor Thread::Thread() is protected by design. at least the run() function must be overridden. More...

#include <Thread.h>

Inheritance diagram for sf::Thread:

Classes
class	Attributes
	Thread attributes used internally for starting a thread. More...
class	TerminateException
	Special thread exception thrown by system blocking functions to terminate the thread. More...
class	ThreadException
	Thread exception. More...

Public Types
enum	EStatus : int {   tsInvalid = 0 , tsCreated , tsRunning , tsFinished ,   tsTerminated }
	Thread states enumeration. More...
enum	EPriority : int {   tpIdle = -15 , tpLowest = -2 , tpBelowNormal = -1 , tpNormal = 0 ,   tpAboveNormal = 1 , tpHighest = 2 , tpTimeCritical = 15 }
	Enumeration of thread priorities. More...
typedef pthread_t	handle_type
	Local declaration of the handle type.
typedef pid_t	id_type
	Local declaration of the thread id type.

Public Member Functions
handle_type	start ()
	Starts a thread with default attributes which calls on its turn the overridden run().
handle_type	start (const Attributes &attr)
	Starts a thread which calls on its turn the overridden function Run().
virtual void	terminate ()
	Can be overloaded to signal the thread to terminate.
void	terminateAndWait ()
	Same as calling Terminate() and thereafter calling WaitForExit()
void	waitForExit ()
	Waits for the thread to exit.
EStatus	getStatus () const
	Returns the status.
const char *	getStatusText (EStatus status=(EStatus) -1) const
	Returns the status a string.
int	getExitCode () const
	Returns the exist value of the thread function.
bool	isSelf () const
	Returns true if the calling thread is this thread.
id_type	getId () const
	Returns the thread ID. Is currently in Linux the same as the handle.
handle_type	getHandle () const
	Returns the handle of this instance.
	operator handle_type () const
	Casting operator for THandle type.
void	setName (const char *name)
	Sets the name of the thread available in the debugger. The name is clipped to the first 15 characters only.
std::string	getName () const
	Gets the name of the thread available in the debugger.
int	getPriority () const
	Gets the current priority of this instance.
bool	setPriority (int pri, int sp=Attributes::spScheduleOther)
	Can pass an enumerate EPriority for simplicity.
void	setTerminationTime (const TimeSpec &ts)
	Sets the time needed for the thread to terminate. Default is one 100 ms.
bool	shouldTerminate () const
	Call by the thread itself to determine if it should terminate. Another thread then this one it too but has no effect.
void	exit (int code)
	Alternative to returning from then run() method. Called from within the thread that wants to exit early. It save-guarded from other threads calling it.
void	setDebug (bool yn)
	Enables debug logging.
bool	sleep (const TimeSpec &ts, bool alertable=true) const
	Makes the current thread sleep for the given amount time until a signal interrupts when alertable is true.
	Thread (const Thread &)=delete
	Copying constructor disabled and not implemented.
const Thread &	operator= (const Thread &)=delete
	Copy constructor not implemented.
bool	isDebug () const
	Gets the debug flag.

Static Public Member Functions
static int	getTerminationSignal ()
	Returns the thread termination signal.
static bool	yieldToOther ()
	Yield control of the current thread. The name 'Yield()' is defined as a macro in MingW.
static handle_type	getCurrentHandle ()
	Return the current thread handle.
static id_type	getMainId ()
	Gets the main thread ID.
static id_type	getCurrentId ()
	Gets the current thread ID.
static Thread &	getCurrent ()
	Gets the sf::Thread instance reference of the current thread.
static size_t	getCurrentStackSize ()
	Returns the current thread initial stack size.

Protected Member Functions
	Thread (const std::string &name)
	Protected constructor which demands to derive a class.
	Thread (bool)
	Wraps this class around the main thread of the application. The boolean bogus argument is to be different from the default constructor.
virtual	~Thread ()
	Virtual Destructor.
virtual void	cleanup ()
	Function which can be overloaded in a derived class.
virtual int	run ()=0
	Function which needs to be overloaded in a derived class. This function is the actual thread function.
void	TerminationSignal ()
	Called to unblock system functions.

Friends
class	Condition
void	installSignalHandlers ()

Detailed Description

Thread wrapper class to be used for attachment to an existing thread or a new to be created thread. This class can only be used to derive from since the constructor Thread::Thread() is protected by design. at least the run() function must be overridden.

Member Typedef Documentation

handle_type

typedef pthread_t sf::Thread::handle_type

Local declaration of the handle type.

id_type

typedef pid_t sf::Thread::id_type

Local declaration of the thread id type.

Member Enumeration Documentation

EPriority

enum sf::Thread::EPriority : int

Enumeration of thread priorities.

Enumerator
tpIdle
tpLowest
tpBelowNormal
tpNormal
tpAboveNormal
tpHighest
tpTimeCritical

EStatus

enum sf::Thread::EStatus : int

Thread states enumeration.

See also

getStatus(), getStatusText()

Enumerator
tsInvalid	The thread is not setup yet.
tsCreated	The thread is created but not started.
tsRunning	Thread is running.
tsFinished	The thread has run and finished.
tsTerminated	The thread was externally terminated.

Constructor & Destructor Documentation

Thread() [1/3]

sf::Thread::Thread ( const Thread &  )

delete

Copying constructor disabled and not implemented.

Thread() [2/3]

sf::Thread::Thread ( const std::string &  name )

protected

Protected constructor which demands to derive a class.

Thread() [3/3]

sf::Thread::Thread ( bool  )

protected

Wraps this class around the main thread of the application. The boolean bogus argument is to be different from the default constructor.

~Thread()

virtual sf::Thread::~Thread ( )

protectedvirtual

Virtual Destructor.

Member Function Documentation

cleanup()

virtual void sf::Thread::cleanup ( )

protectedvirtual

Function which can be overloaded in a derived class.

Is called after a thread cancel.

exit()

void sf::Thread::exit

(

int

code

)

Alternative to returning from then run() method. Called from within the thread that wants to exit early. It save-guarded from other threads calling it.

See also

run()

getCurrent()

static Thread & sf::Thread::getCurrent ( )

static

Gets the sf::Thread instance reference of the current thread.

Returns

getCurrentHandle()

static handle_type sf::Thread::getCurrentHandle ( )

static

Return the current thread handle.

Returns

Thread handle.

getCurrentId()

static id_type sf::Thread::getCurrentId ( )

static

Gets the current thread ID.

Returns

Current thread id.

getCurrentStackSize()

static size_t sf::Thread::getCurrentStackSize ( )

static

Returns the current thread initial stack size.

Returns

The stack size.

Exceptions

ExceptionSystemCall

getExitCode()

int sf::Thread::getExitCode

(

)

const

Returns the exist value of the thread function.

getHandle()

handle_type sf::Thread::getHandle

(

)

const

Returns the handle of this instance.

getId()

id_type sf::Thread::getId

(

)

const

Returns the thread ID. Is currently in Linux the same as the handle.

getMainId()

static id_type sf::Thread::getMainId ( )

static

Gets the main thread ID.

Returns

Main thread Id.

getName()

std::string sf::Thread::getName

(

)

const

Gets the name of the thread available in the debugger.

Note

The thread must be created for this.

getPriority()

int sf::Thread::getPriority

(

)

const

Gets the current priority of this instance.

getStatus()

EStatus sf::Thread::getStatus

(

)

const

Returns the status.

See also

EStatus

getStatusText()

const char * sf::Thread::getStatusText

(

EStatus

status = (EStatus) -1

)

const

Returns the status a string.

By default, the current state is returned.

See also

getStatus()

getTerminationSignal()

static int sf::Thread::getTerminationSignal ( )

static

Returns the thread termination signal.

isDebug()

bool sf::Thread::isDebug ( ) const

inline

Gets the debug flag.

isSelf()

bool sf::Thread::isSelf

(

)

const

Returns true if the calling thread is this thread.

operator handle_type()

sf::Thread::operator handle_type ( ) const

inline

Casting operator for THandle type.

operator=()

const Thread & sf::Thread::operator= ( const Thread &  )

delete

Copy constructor not implemented.

run()

virtual int sf::Thread::run ( )

protectedpure virtual

Function which needs to be overloaded in a derived class. This function is the actual thread function.

Implemented in sf::ThreadMain, and sf::ThreadClosure.

setDebug()

void sf::Thread::setDebug ( bool  yn )

inline

Enables debug logging.

Parameters

yn	True for debug output.

setName()

void sf::Thread::setName

(

const char *

name

)

Sets the name of the thread available in the debugger. The name is clipped to the first 15 characters only.

Note

The thread must be created for this.

setPriority()

bool sf::Thread::setPriority	(	int	pri,
		int	sp = Attributes::spScheduleOther
	)

Can pass an enumerate EPriority for simplicity.

See also

EPriority

setTerminationTime()

void sf::Thread::setTerminationTime

(

const TimeSpec &

ts

)

Sets the time needed for the thread to terminate. Default is one 100 ms.

shouldTerminate()

bool sf::Thread::shouldTerminate

(

)

const

Call by the thread itself to determine if it should terminate. Another thread then this one it too but has no effect.

sleep()

bool sf::Thread::sleep	(	const TimeSpec &	ts,
		bool	alertable = true
	)		const

Makes the current thread sleep for the given amount time until a signal interrupts when alertable is true.

Returns

True when completed and false when interrupted.

start() [1/2]

handle_type sf::Thread::start

(

)

Starts a thread with default attributes which calls on its turn the overridden run().

See also

run()

start() [2/2]

handle_type sf::Thread::start

(

const Attributes &

attr

)

Starts a thread which calls on its turn the overridden function Run().

Parameters

attr	Attributes for stack size and scheduling and prioritisation.

Returns

Handle of the created thread.

terminate()

virtual void sf::Thread::terminate ( )

virtual

Can be overloaded to signal the thread to terminate.

Makes shouldTerminate() return false.

See also

shouldTerminate()

terminateAndWait()

void sf::Thread::terminateAndWait

(

)

Same as calling Terminate() and thereafter calling WaitForExit()

See also

terminate(), waitForExit()

TerminationSignal()

void sf::Thread::TerminationSignal ( )

protected

Called to unblock system functions.

waitForExit()

void sf::Thread::waitForExit

(

)

Waits for the thread to exit.

yieldToOther()

static bool sf::Thread::yieldToOther ( )

static

Yield control of the current thread. The name 'Yield()' is defined as a macro in MingW.

Returns

True when successful.

Friends And Related Symbol Documentation

Condition

friend class Condition

friend

installSignalHandlers

void installSignalHandlers ( )

friend

Allow access to privates to this class from functions or classes.

Member Data Documentation

Code

intptr_t sf::Thread::Code

Ptr

void* sf::Thread::Ptr

---

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

• Thread.h