Hi: Yes, that works fine, the following replacement gives the error provided: boost::shared_ptr<boost::thread> t(boost::bind(&boost::asio::io_service::run, io.get())); Cheers Sean. -----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Kulti Sent: 21 March 2011 09:12 To: boost-users@lists.boost.org Subject: Re: [Boost-users] storing a boost.thread in a boost shared ptr On Mon, Mar 21, 2011 at 7:45 AM, Sean Farrow <sean.farrow@seanfarrow.co.uk> wrote:

Hi:

I'm trying to store a boost.thread in a boost::fusion::vector, and need to use a shared ptr, due to boost.thrad being non-copyable

I'm using Microsoft visual c++ 2010.

I get the following error:

     1>d:\devexpress\mdrlite\mdrlite\mdrlite\midiwidget.cpp(21): error C2664: 'boost::shared_ptr<T>::shared_ptr(boost::shared_ptr<T> &&)' : cannot convert parameter 1 from 'boost::_bi::bind_t<R,F,L>' to 'boost::shared_ptr<T> &&'

                 with

                 [

                     T=boost::thread

                 ]

                 and

                 [

                     R=size_t,

                     F=boost::_mfi::mf0<size_t,boost::asio::io_service>,

L=boost::_bi::list1<boost::_bi::value<boost::asio::io_service *>>

                 ]

                 and

                 [

                     T=boost::thread

                 ]

                 Reason: cannot convert from 'boost::_bi::bind_t<R,F,L>' to 'boost::shared_ptr<T>'

                 with

                 [

                     R=size_t,

                     F=boost::_mfi::mf0<size_t,boost::asio::io_service>,

         L=boost::_bi::list1<boost::_bi::value<boost::asio::io_service *>>

                 ]

                 and

                 [

                     T=boost::thread

                 ]

                 No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

My boost thread is defined as:

boost::thread t(boost::bind(&boost::asio::io_service::run, io.get()));

and io is defined as:

boost::shared_ptr<boost::asio::io_service> io;

I'm obviously overlooking something, I just carn't work out what?

Any help appreciated.

Regards

Sean.

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Hm... are you sure, that line 21 is boost::thread t(boost::bind(&boost::asio::io_service::run, io.get())); ? I'm trying to g++ -c following simple function and no errors occurred: void test() { boost::shared_ptr<boost::asio::io_service> io; boost::thread t(boost::bind(&boost::asio::io_service::run, io.get())); } _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Hi, you need to initialize boost::shared_ptr<boost::thread> with a pointer to a boost::thread object, not with the object (instance) itself. the preferred way of creating a new object and initializing a boost::shared_ptr with it is to use boost::make_shared, like this: boost::shared_ptr<boost::thread> t_ptr = boost::make_shared<boost::thread>( xxx ); where xxx is the code you want to pass to boost::thread's constructor. see the documentation of boost::make_shared for more details. WBR, Adam On 03/21/2011 10:31 AM, Sean Farrow wrote:

Hi: Yes, that works fine, the following replacement gives the error provided: boost::shared_ptr<boost::thread> t(boost::bind(&boost::asio::io_service::run, io.get())); Cheers Sean.

-----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Kulti Sent: 21 March 2011 09:12 To: boost-users@lists.boost.org Subject: Re: [Boost-users] storing a boost.thread in a boost shared ptr

On Mon, Mar 21, 2011 at 7:45 AM, Sean Farrow <sean.farrow@seanfarrow.co.uk> wrote:

...

Hi:

I'm trying to store a boost.thread in a boost::fusion::vector, and need to use a shared ptr, due to boost.thrad being non-copyable

I'm using Microsoft visual c++ 2010.

I get the following error:

1>d:\devexpress\mdrlite\mdrlite\mdrlite\midiwidget.cpp(21): error C2664: 'boost::shared_ptr<T>::shared_ptr(boost::shared_ptr<T> &&)' : cannot convert parameter 1 from 'boost::_bi::bind_t<R,F,L>' to 'boost::shared_ptr<T> &&'

with

[

T=boost::thread

]

and

[

R=size_t,

F=boost::_mfi::mf0<size_t,boost::asio::io_service>,

L=boost::_bi::list1<boost::_bi::value<boost::asio::io_service *>>

]

and

[

T=boost::thread

]

Reason: cannot convert from 'boost::_bi::bind_t<R,F,L>' to 'boost::shared_ptr<T>'

with

[

R=size_t,

F=boost::_mfi::mf0<size_t,boost::asio::io_service>,

L=boost::_bi::list1<boost::_bi::value<boost::asio::io_service *>>

]

and

[

T=boost::thread

]

No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

My boost thread is defined as:

boost::thread t(boost::bind(&boost::asio::io_service::run, io.get()));

and io is defined as:

boost::shared_ptr<boost::asio::io_service> io;

I'm obviously overlooking something, I just carn't work out what?

Any help appreciated.

Regards

Sean.

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Hm... are you sure, that line 21 is boost::thread t(boost::bind(&boost::asio::io_service::run, io.get())); ? I'm trying to g++ -c following simple function and no errors occurred: void test() { boost::shared_ptr<boost::asio::io_service> io; boost::thread t(boost::bind(&boost::asio::io_service::run, io.get())); } _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users