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bc7bff74 | 1 | /* Copyright (C) 2013 Free Software Foundation, Inc. |
2 | Contributed by Jakub Jelinek <jakub@redhat.com>. | |
3 | ||
4 | This file is part of the GNU OpenMP Library (libgomp). | |
5 | ||
6 | Libgomp is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
10 | ||
11 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
13 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | more details. | |
15 | ||
16 | Under Section 7 of GPL version 3, you are granted additional | |
17 | permissions described in the GCC Runtime Library Exception, version | |
18 | 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | You should have received a copy of the GNU General Public License and | |
21 | a copy of the GCC Runtime Library Exception along with this program; | |
22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | <http://www.gnu.org/licenses/>. */ | |
24 | ||
25 | /* This file handles the maintainence of threads in response to team | |
26 | creation and termination. */ | |
27 | ||
28 | #include "libgomp.h" | |
29 | #include <limits.h> | |
30 | #include <stdbool.h> | |
31 | #include <stdlib.h> | |
32 | #include <string.h> | |
33 | ||
34 | attribute_hidden int | |
35 | gomp_get_num_devices (void) | |
36 | { | |
37 | return 0; | |
38 | } | |
39 | ||
40 | /* Called when encountering a target directive. If DEVICE | |
41 | is -1, it means use device-var ICV. If it is -2 (or any other value | |
42 | larger than last available hw device, use host fallback. | |
43 | FN is address of host code, OPENMP_TARGET contains value of the | |
44 | __OPENMP_TARGET__ symbol in the shared library or binary that invokes | |
45 | GOMP_target. HOSTADDRS, SIZES and KINDS are arrays | |
46 | with MAPNUM entries, with addresses of the host objects, | |
47 | sizes of the host objects (resp. for pointer kind pointer bias | |
48 | and assumed sizeof (void *) size) and kinds. */ | |
49 | ||
50 | void | |
51 | GOMP_target (int device, void (*fn) (void *), const void *openmp_target, | |
52 | size_t mapnum, void **hostaddrs, size_t *sizes, | |
53 | unsigned char *kinds) | |
54 | { | |
55 | /* Host fallback. */ | |
56 | struct gomp_thread old_thr, *thr = gomp_thread (); | |
57 | old_thr = *thr; | |
58 | memset (thr, '\0', sizeof (*thr)); | |
59 | if (gomp_places_list) | |
60 | { | |
61 | thr->place = old_thr.place; | |
62 | thr->ts.place_partition_len = gomp_places_list_len; | |
63 | } | |
64 | fn (hostaddrs); | |
65 | gomp_free_thread (thr); | |
66 | *thr = old_thr; | |
67 | } | |
68 | ||
69 | void | |
70 | GOMP_target_data (int device, const void *openmp_target, size_t mapnum, | |
71 | void **hostaddrs, size_t *sizes, unsigned char *kinds) | |
72 | { | |
73 | } | |
74 | ||
75 | void | |
76 | GOMP_target_end_data (void) | |
77 | { | |
78 | } | |
79 | ||
80 | void | |
81 | GOMP_target_update (int device, const void *openmp_target, size_t mapnum, | |
82 | void **hostaddrs, size_t *sizes, unsigned char *kinds) | |
83 | { | |
84 | } | |
85 | ||
86 | void | |
87 | GOMP_teams (unsigned int num_teams, unsigned int thread_limit) | |
88 | { | |
89 | if (thread_limit) | |
90 | { | |
91 | struct gomp_task_icv *icv = gomp_icv (true); | |
92 | icv->thread_limit_var | |
93 | = thread_limit > INT_MAX ? UINT_MAX : thread_limit; | |
94 | } | |
95 | (void) num_teams; | |
96 | } |