Re: [Boost-users] storing a boost.thread in a boost shared ptr

Subject: Re: [Boost-users] storing a boost.thread in a boost shared ptr
From: Kulti (kultihell_at_[hidden])
Date: 2011-03-21 05:47:39

On Mon, Mar 21, 2011 at 9:31 AM, Sean Farrow
<sean.farrow_at_[hidden]> 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_at_[hidden] [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Kulti
> Sent: 21 March 2011 09:12
> To: boost-users_at_[hidden]
> 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_at_[hidden]> 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_at_[hidden]
>> 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()));
> }
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>

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