ThreadCounter Class Reference

#include <recorder_writer.h>

Inheritance diagram for ThreadCounter:

Signals
void	notifyInUseChange (bool valueWasIncreased)
void	notifyValueChange (bool valueWasIncreased)

Public Member Functions
void	decUsedAndNotify ()
unsigned int	get () const
unsigned int	getUsed () const
void	incUsedAndNotify ()
ThreadCounter &	operator= (const ThreadCounter &)=delete
ThreadCounter &	operator= (ThreadCounter &&)=delete
bool	set (int value)
void	setAndNotify (int value)
bool	setUsed (int value)
void	setUsedAndNotify (int value)
	ThreadCounter ()=default
	ThreadCounter (const ThreadCounter &)=delete
	ThreadCounter (ThreadCounter &&)=delete

Private Member Functions
bool	setUsedImpl (int value)

Private Attributes
unsigned int	inUse
QMutex	inUseMutex
unsigned int	threads

Detailed Description

Definition at line 36 of file recorder_writer.h.

Constructor & Destructor Documentation

ThreadCounter() [1/3]

ThreadCounter::ThreadCounter ( )

default

ThreadCounter() [2/3]

ThreadCounter::ThreadCounter ( const ThreadCounter & )

delete

ThreadCounter() [3/3]

ThreadCounter::ThreadCounter ( ThreadCounter && )

delete

Member Function Documentation

decUsedAndNotify()

void ThreadCounter::decUsedAndNotify

(

)

Definition at line 94 of file recorder_writer.cpp.

{
    QMutexLocker lock(&inUseMutex);
    if (setUsedImpl(inUse - 1)) {
        // Emit signal to GUI that the value has been changed
        Q_EMIT notifyInUseChange(false);
    }
}

References inUse, inUseMutex, notifyInUseChange(), and setUsedImpl().

get()

unsigned int ThreadCounter::get

(

)

const

Definition at line 64 of file recorder_writer.cpp.

{
    return threads;
}

References threads.

getUsed()

unsigned int ThreadCounter::getUsed

(

)

const

Definition at line 103 of file recorder_writer.cpp.

{
    return inUse;
}

References inUse.

incUsedAndNotify()

void ThreadCounter::incUsedAndNotify

(

)

Definition at line 85 of file recorder_writer.cpp.

{
   QMutexLocker lock(&inUseMutex);
   auto oldValue = getUsed();
   if (setUsedImpl(inUse + 1)) {
        // Emit signal to GUI that the value has been changed
        Q_EMIT notifyInUseChange(oldValue < getUsed());
    }
}

References getUsed(), inUse, inUseMutex, notifyInUseChange(), and setUsedImpl().

notifyInUseChange

void ThreadCounter::notifyInUseChange ( bool valueWasIncreased )

signal

notifyValueChange

void ThreadCounter::notifyValueChange ( bool valueWasIncreased )

signal

operator=() [1/2]

ThreadCounter & ThreadCounter::operator= ( const ThreadCounter & )

delete

operator=() [2/2]

ThreadCounter & ThreadCounter::operator= ( ThreadCounter && )

delete

set()

bool ThreadCounter::set

(

int

value

)

Definition at line 46 of file recorder_writer.cpp.

{
    auto oldValue = threads;
    threads = static_cast<unsigned int>(
        qBound(1, value, static_cast<int>(ThreadSystemValue::MaxThreadCount))
    );
    return oldValue != threads;
}

References ThreadSystemValue::MaxThreadCount, threads, and value().

setAndNotify()

void ThreadCounter::setAndNotify

(

int

value

)

Definition at line 55 of file recorder_writer.cpp.

{
    auto oldValue = get();
    if (set(value)) {
        // Emit signal to GUI that the value has been changed
        Q_EMIT notifyValueChange(oldValue < get());
    }
}

References get(), notifyValueChange(), set(), and value().

setUsed()

bool ThreadCounter::setUsed

(

int

value

)

Definition at line 69 of file recorder_writer.cpp.

{
    QMutexLocker lock(&inUseMutex);
    return setUsedImpl(value);
}

References inUseMutex, setUsedImpl(), and value().

setUsedAndNotify()

void ThreadCounter::setUsedAndNotify

(

int

value

)

Definition at line 75 of file recorder_writer.cpp.

{
    QMutexLocker lock(&inUseMutex);
    auto oldValue = getUsed();
    if (setUsedImpl(value)) {
        // Emit signal to GUI that the value has been changed
        Q_EMIT notifyInUseChange(oldValue < getUsed());
    }
}

References getUsed(), inUseMutex, notifyInUseChange(), setUsedImpl(), and value().

setUsedImpl()

bool ThreadCounter::setUsedImpl ( int value )

private

Definition at line 108 of file recorder_writer.cpp.

{
    auto oldValue = inUse;
    inUse = static_cast<unsigned int>(
        qBound(0, value, static_cast<int>(threads))
    );
    return oldValue != inUse;
}

References inUse, threads, and value().

Member Data Documentation

inUse

unsigned int ThreadCounter::inUse

private

Definition at line 65 of file recorder_writer.h.

inUseMutex

QMutex ThreadCounter::inUseMutex

private

Definition at line 66 of file recorder_writer.h.

threads

unsigned int ThreadCounter::threads

private

Definition at line 64 of file recorder_writer.h.

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

• plugins/dockers/recorder/recorder_writer.h
• plugins/dockers/recorder/recorder_writer.cpp