Thanks for the sugg. My question was about that contradiction . 2011/10/19 Leo Carreon

Hi Marcello,

If you have a lot of arguments to pass, it is better to pass a structure containing all the arguments you want to pass instead of passing them individually.

Regards, Leo

*From:* Marcello Puligheddu *Sent:* Thursday, October 20, 2011 7:16 AM *To:* Boost-users@lists.boost.org *Subject:* [Boost-users] [thread]N of args for thread::thread with args

In http://www.boost.org/doc/libs/1_47_0/doc/html/thread/thread_management.html

Thread Constructor with argumentshttp://www.boost.org/doc/libs/1_47_0/doc/html/thread/thread_management.html#... [...] Note:

Currently up to nine additional arguments a1 to a9 can be specified in addition to the function f. But in Launching threadshttp://www.boost.org/doc/libs/1_47_0/doc/html/thread/thread_management.html#...is clearly stated

"There is an unspecified limit on the number of additional arguments that can be passed." -- marcello puligheddu Cagliari ,Sardegna, Italia +393203090251

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-- marcello puligheddu Cagliari ,Sardegna, Italia +393203090251

Thank you for the clear answer . Unspecified doesn't mean unlimited . 2011/10/19 Arash Partow

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#...

...

[...] 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#...

...

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

-- marcello puligheddu Cagliari ,Sardegna, Italia +393203090251