[Boost-bugs] [Boost C++ Libraries] #11717: Associate an Executor used to launch the continuation to a promise/packaged_task constructor.

Subject: [Boost-bugs] [Boost C++ Libraries] #11717: Associate an Executor used to launch the continuation to a promise/packaged_task constructor.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-10-10 14:55:30

#11717: Associate an Executor used to launch the continuation to a
promise/packaged_task constructor.
------------------------------+----------------------
 Reporter:  viboes            |      Owner:  anthonyw
     Type:  Feature Requests  |     Status:  new
Milestone:  To Be Determined  |  Component:  thread
  Version:  Boost 1.58.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+----------------------
 Currently
 we have `async` function that constructs futures associated to an
 `Executor`.

 The `then()` member function should use this executor to launch the
 continuation. See #11716.

 But futures can also have other sources, as e.g. a `promise` or a
 `packaged_task`.
 This paper proposes the addition of `Executor` aware constructors for
 `promise<T>` and `packaged_task<R(Args)>`
 so that the continuation on the associated future make use of this
 executor.

 We propose to:
 * Add `promise<T>::promise<T>(Executor&)` Executor aware constructor.

 * Add `packaged_task<R(Args...)>::packaged_task(Executor&)` Executor aware
 constructor.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11717>
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