How to use QMutex to lock on other thread when passing by pointer?

[Arrandale]

@class MyData
{
int number;
};

MyData myData;

class MyThread1
{
public:

void add(MyData *myData)
{
myData->number = 20;
}
};

class MyThread2
{
public:

void add(MyData *myData)
{
myData->number = 30;
}
};@

How to lock "int number" on MyData;

[sierdzio]

@
class MyData
{
public:
void setNumber(int newValue)
{
QMutexLocker locker(&mutex);
number = newValue;
}

protected:
int number;
QMutex mutex;
};
@

Done :-)

Althoug I wouild recommend using Qt::QueuedConnection and signals and slots, if possible. This way you avoid locking altogether.

[Arrandale]

Hmm...
While I waiting the answer, I try to do this way, it's look like this but
the difference is I declare QMutex on public and "int number" on private

Any reason to declare both number and mutex on protected? Or it's must?

Thanks.

[sierdzio]

Not a requirement, just my preference.

[Arrandale]

OK.
Thanks a lot.