Kokkos Core Kernels Package Version of the Day
Kokkos_AcquireUniqueTokenImpl.hpp
1/*
2//@HEADER
3// ************************************************************************
4//
5// Kokkos v. 3.0
6// Copyright (2020) National Technology & Engineering
7// Solutions of Sandia, LLC (NTESS).
8//
9// Under the terms of Contract DE-NA0003525 with NTESS,
10// the U.S. Government retains certain rights in this software.
11//
12// Redistribution and use in source and binary forms, with or without
13// modification, are permitted provided that the following conditions are
14// met:
15//
16// 1. Redistributions of source code must retain the above copyright
17// notice, this list of conditions and the following disclaimer.
18//
19// 2. Redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution.
22//
23// 3. Neither the name of the Corporation nor the names of the
24// contributors may be used to endorse or promote products derived from
25// this software without specific prior written permission.
26//
27// THIS SOFTWARE IS PROVIDED BY NTESS "AS IS" AND ANY
28// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NTESS OR THE
31// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
32// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
33// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
34// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38//
39// Questions? Contact Christian R. Trott (crtrott@sandia.gov)
40//
41// ************************************************************************
42//@HEADER
43*/
44
45#ifndef KOKKOS_ACQUIRE_UNIQUE_TOKEN_IMPL_HPP
46#define KOKKOS_ACQUIRE_UNIQUE_TOKEN_IMPL_HPP
47
48#include <Kokkos_Core.hpp>
49#include <Kokkos_UniqueToken.hpp>
50namespace Kokkos {
51namespace Experimental {
52
53template <typename TeamPolicy>
54KOKKOS_FUNCTION AcquireTeamUniqueToken<TeamPolicy>::AcquireTeamUniqueToken(
55 AcquireTeamUniqueToken<TeamPolicy>::token_type t, team_member_type team)
56 : my_token(t), my_team_acquired_val(team.team_scratch(0)), my_team(team) {
57 Kokkos::single(Kokkos::PerTeam(my_team),
58 [&]() { my_team_acquired_val() = my_token.acquire(); });
59 my_team.team_barrier();
60
61 my_acquired_val = my_team_acquired_val();
62}
63
64template <typename TeamPolicy>
65KOKKOS_FUNCTION AcquireTeamUniqueToken<TeamPolicy>::~AcquireTeamUniqueToken() {
66 my_team.team_barrier();
67 Kokkos::single(Kokkos::PerTeam(my_team),
68 [&]() { my_token.release(my_acquired_val); });
69 my_team.team_barrier();
70}
71
72} // namespace Experimental
73} // namespace Kokkos
74
75#endif // KOKKOS_UNIQUE_TOKEN_HPP