osgEarth::Threading::Event Class Reference

List of all members.

Public Member Functions
	Event ()
	~Event ()
bool	wait ()
bool	waitAndReset ()
void	set ()
void	reset ()
bool	isSet () const
Protected Attributes
OpenThreads::Mutex	_m
OpenThreads::Condition	_cond
bool	_set

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Detailed Description

Event with a toggled signal state.

Definition at line 44 of file ThreadingUtils.

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Constructor & Destructor Documentation

osgEarth::Threading::Event::Event

(

)

[inline]

Definition at line 47 of file ThreadingUtils.

: _set( false ) { }

osgEarth::Threading::Event::~Event

(

)

[inline]

Definition at line 49 of file ThreadingUtils.

                 { 
            reset(); 
            for( int i=0; i<255; ++i ) // workaround buggy broadcast
                _cond.signal();
        }

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Member Function Documentation

bool osgEarth::Threading::Event::isSet

(

)

const [inline]

Definition at line 88 of file ThreadingUtils.

                                  {
            return _set;
        }

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void osgEarth::Threading::Event::reset

(

)

[inline]

Definition at line 83 of file ThreadingUtils.

                            {
            OpenThreads::ScopedLock<OpenThreads::Mutex> lock( _m );
            _set = false;
        }

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void osgEarth::Threading::Event::set

(

)

[inline]

Definition at line 74 of file ThreadingUtils.

                          {
            OpenThreads::ScopedLock<OpenThreads::Mutex> lock( _m );
            if ( !_set ) {
                _set = true;
                _cond.broadcast(); // possible deadlock before OSG r10457 on windows
                //_cond.signal();
            }
        }

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bool osgEarth::Threading::Event::wait

(

)

[inline]

Definition at line 55 of file ThreadingUtils.

                           {
            OpenThreads::ScopedLock<OpenThreads::Mutex> lock( _m );
            return _set ? true : (_cond.wait( &_m ) == 0);
        }

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bool osgEarth::Threading::Event::waitAndReset

(

)

[inline]

waits on a signal, and then automatically resets it before returning.

Definition at line 61 of file ThreadingUtils.

                                   {
            OpenThreads::ScopedLock<OpenThreads::Mutex> lock( _m );
            if ( _set ) {
                _set = false;
                return true;
            }
            else {
                bool value = _cond.wait( &_m ) == 0;
                _set = false;
                return value;
            }
        }

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Member Data Documentation

OpenThreads::Condition osgEarth::Threading::Event::_cond [protected]

Definition at line 94 of file ThreadingUtils.

OpenThreads::Mutex osgEarth::Threading::Event::_m [protected]

Definition at line 93 of file ThreadingUtils.

bool osgEarth::Threading::Event::_set [protected]

Definition at line 95 of file ThreadingUtils.

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

• /home/cube/sources/osgearth/src/osgEarth/ThreadingUtils