Re: [Boost-users] [thread]N of args for thread::thread with args

Subject: Re: [Boost-users] [thread]N of args for thread::thread with args
From: Marcello Puligheddu (marcello.puligheddu_at_[hidden])
Date: 2011-10-20 04:57:32

Thank you for the clear answer . Unspecified doesn't mean unlimited .

2011/10/19 Arash Partow <arash_at_[hidden]>

> Marcello Puligheddu wrote:
> > In
> >
> http://www.boost.org/doc/libs/1_47_0/doc/html/thread/thread_management.html
> >
> >         Thread Constructor with arguments
> >         <
> http://www.boost.org/doc/libs/1_47_0/doc/html/thread/thread_management.html#thread.thread_management.thread.multiple_argument_constructor
> >
> >
> > [...]
> > Note:
> >
> >     Currently up to nine additional arguments |a1|to |a9|can be
> >     specified in addition to the function |f|.
> >
> > But in
> >
> >         Launching threads
> >         <
> http://www.boost.org/doc/libs/1_47_0/doc/html/thread/thread_management.html#thread.thread_management.launching_threads
> >
> >
> > is clearly stated
> >
> > "There is an unspecified limit on the number of additional arguments
> > that can be passed."
>
>
> AFAIK, for C++11 implementations of std::thread, based on 30.2.1.2 of [1],
> the constructor is to make use of variadic templates. I believe that is
> where the term "unspecified" originates. For pre C++11 implementations, this
> can only be achieved through multiple overloads with a varying number of
> parameters, which would inevitably have a trivial upper-limit.
>
>
> [1]
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2497.html#thread.threads.constr
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-- 
marcello puligheddu
Cagliari ,Sardegna, Italia
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