Am 30.12.2012 um 12:53 schrieb Szymon Gatner:

Hi Philip,

2012/12/30 Philipp Kraus :

...

Which structure must be implementated for the class myThread and from which class must be derived?

no need for derivation. Just implement operator() for your class like so:

class myThread { public some methods

void operator()() { // this will run in new thread }

private some properties }

I get with this use compiler errors, this code boost::thread_group l_group; for(std::size_t i=0; i < 5; ++i) l_group( myThread() ); l_group.join_all(); shows: error: no match for call to '(boost::thread_group) (myThread)' on the loop line I have tested l_group( boost::thread(myThread) ); and creates the error: error: no match for call to '(boost::thread_group) (boost::thread) In my class "myThread" I have a overloaded public method: void operator() (void); How can I fix the error? Thanks Phil

Am 30.12.2012 um 19:31 schrieb Vicente J. Botet Escriba:

Le 30/12/12 19:20, Philipp Kraus a écrit :

...

Am 30.12.2012 um 12:53 schrieb Szymon Gatner:

...

Hi Philip,

2012/12/30 Philipp Kraus :

...

Which structure must be implementated for the class myThread and from which class must be derived?

no need for derivation. Just implement operator() for your class like so:

class myThread { public some methods

void operator()() { // this will run in new thread }

private some properties } I get with this use compiler errors, this code

boost::thread_group l_group; for(std::size_t i=0; i < 5; ++i)

l_group.join_all();

shows: error: no match for call to '(boost::thread_group) (myThread)'

on the loop line I have tested

l_group( boost::thread(myThread) );

and creates the error:

error: no match for call to '(boost::thread_group) (boost::thread)

In my class "myThread" I have a overloaded public method: void operator() (void);

How can I fix the error?

To create and add a new thread to a thread_group you should use Member function create_thread()

template<typename F> thread* create_thread(F threadfunc); Effects: Create a new boost::thread object as-if by new thread(threadfunc) and add it to the group.

Postcondition: this->size() is increased by one, the new thread is running.

Returns: A pointer to the new boost::thread object.

l_group.create_thread( myThread() );

Thanks for this hint, I don't find this passage on the documentation at the moment, but with create_thread it works Phil