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a945c346 | 1 | /* Copyright (C) 2021-2024 Free Software Foundation, Inc. |
e45483c7 JJ |
2 | Contributed by Jakub Jelinek <jakub@redhat.com>. |
3 | ||
4 | This file is part of the GNU Offloading and Multi Processing Library | |
5 | (libgomp). | |
6 | ||
7 | Libgomp is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
14 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | more details. | |
16 | ||
17 | Under Section 7 of GPL version 3, you are granted additional | |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
25 | ||
26 | /* This file handles the SCOPE construct with task reductions. */ | |
27 | ||
28 | #include "libgomp.h" | |
29 | #include <string.h> | |
30 | ||
31 | ||
32 | ialias_redirect (GOMP_taskgroup_reduction_register) | |
33 | ||
34 | /* This routine is called when first encountering a scope construct | |
35 | with task reductions. While scope is not a work-sharing construct, | |
36 | if it has task reductions on it, we treat it as one, but as if it is | |
37 | nowait, so the work-sharing behavior is done solely to choose which | |
38 | thread does the initial initialization of task reductions and which | |
39 | threads follow. scope with task reductions must not be nowait, | |
40 | but the barrier and GOMP_workshare_task_reduction_unregister are emitted | |
41 | by the lowered code later. */ | |
42 | ||
43 | void | |
44 | GOMP_scope_start (uintptr_t *reductions) | |
45 | { | |
46 | struct gomp_thread *thr = gomp_thread (); | |
47 | ||
48 | gomp_workshare_taskgroup_start (); | |
49 | if (gomp_work_share_start (0)) | |
50 | { | |
51 | GOMP_taskgroup_reduction_register (reductions); | |
52 | thr->task->taskgroup->workshare = true; | |
53 | thr->ts.work_share->task_reductions = reductions; | |
54 | gomp_work_share_init_done (); | |
55 | } | |
56 | else | |
57 | { | |
58 | uintptr_t *first_reductions = thr->ts.work_share->task_reductions; | |
59 | gomp_workshare_task_reduction_register (reductions, | |
60 | first_reductions); | |
61 | } | |
62 | } |