1// (C) Copyright 2008-10 Anthony Williams
2// (C) Copyright 2011-2015 Vicente J. Botet Escriba
3//
4// Distributed under the Boost Software License, Version 1.0. (See
5// accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7
8#ifndef BOOST_THREAD_FUTURES_WAIT_FOR_ALL_HPP
9#define BOOST_THREAD_FUTURES_WAIT_FOR_ALL_HPP
10
11#include <boost/thread/detail/config.hpp>
12#include <boost/thread/futures/is_future_type.hpp>
13
14#include <boost/core/enable_if.hpp>
15
16namespace boost
17{
18 template<typename Iterator>
19 typename boost::disable_if<is_future_type<Iterator>,void>::type wait_for_all(Iterator begin,Iterator end)
20 {
21 for(Iterator current=begin;current!=end;++current)
22 {
23 current->wait();
24 }
25 }
26
27#ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
28 template<typename F1,typename F2>
29 typename boost::enable_if<is_future_type<F1>,void>::type wait_for_all(F1& f1,F2& f2)
30 {
31 f1.wait();
32 f2.wait();
33 }
34
35 template<typename F1,typename F2,typename F3>
36 void wait_for_all(F1& f1,F2& f2,F3& f3)
37 {
38 f1.wait();
39 f2.wait();
40 f3.wait();
41 }
42
43 template<typename F1,typename F2,typename F3,typename F4>
44 void wait_for_all(F1& f1,F2& f2,F3& f3,F4& f4)
45 {
46 f1.wait();
47 f2.wait();
48 f3.wait();
49 f4.wait();
50 }
51
52 template<typename F1,typename F2,typename F3,typename F4,typename F5>
53 void wait_for_all(F1& f1,F2& f2,F3& f3,F4& f4,F5& f5)
54 {
55 f1.wait();
56 f2.wait();
57 f3.wait();
58 f4.wait();
59 f5.wait();
60 }
61#else
62 template<typename F1, typename... Fs>
63 typename boost::enable_if<is_future_type<F1>,void>::type wait_for_all(F1& f1, Fs&... fs)
64 {
65 bool dummy[] = { (f1.wait(), true), (fs.wait(), true)... };
66
67 // prevent unused parameter warning
68 (void) dummy;
69 }
70#endif // !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)}
71
72}
73
74#endif // header
75