Passing a parameter to a thread (boost)

[JackC]

Hi,

I create my threads like this:

for(int j = 0; j < 5; j++)
{
boost::thread *thr = new boost::thread(worker_func);
threads.add_thread(thr);
}

How would i go about passing a parameter into the worker function? If
possible i would like to pass a structure in.

Thanks for any help,

Jack

 

[Alf P. Steinbach]

* JackC:

I create my threads like this:

for(int j = 0; j < 5; j++)
{
boost::thread *thr = new boost::thread(worker_func);
threads.add_thread(thr);
}

How would i go about passing a parameter into the worker function? If
possible i would like to pass a structure in.

Try reading the documentation.

Cheers, & hth.,

- Alf

 

[Phil Endecott]

Hi,

I create my threads like this:

for(int j = 0; j < 5; j++)
{
boost::thread *thr = new boost::thread(worker_func);
threads.add_thread(thr);
}

How would i go about passing a parameter into the worker function? If
possible i would like to pass a structure in.

Use Boost.Bind, or similar.

 

[James Kanze]

I create my threads like this:

for(int j = 0; j < 5; j++)
{
boost::thread *thr = new boost::thread(worker_func);
threads.add_thread(thr);
}

How would i go about passing a parameter into the worker
function? If possible i would like to pass a structure in.

The worker function is a boost::function, so you can pass it
pretty much anything that's copiable. Be aware that it will be
copied, however; if you want to access it later in the parent
thread (say after a join), then you need to pass a pointer (or
maybe a reference).