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450b05ce54
As with the memkind library, it is only used when found at runtime; it does not need to be present when building GCC. The included testcase does not check whether the memory has been placed on the nearest node as the Linux kernel memory handling too often ignores that hint, using a different node for the allocation. However, when running with 'numactl --preferred=<node> ./executable', it is clearly visible that the feature works by comparing malloc/default vs. nearest placement (using get_mempolicy to obtain the node for a mem addr). libgomp/ChangeLog: * allocator.c: Add ifdef for LIBGOMP_USE_LIBNUMA. (enum gomp_numa_memkind_kind): Renamed from gomp_memkind_kind; add GOMP_MEMKIND_LIBNUMA. (struct gomp_libnuma_data, gomp_init_libnuma, gomp_get_libnuma): New. (omp_init_allocator): Handle partition=nearest with libnuma if avail. (omp_aligned_alloc, omp_free, omp_aligned_calloc, omp_realloc): Add numa_alloc_local (+ memset), numa_free, and numa_realloc calls as needed. * config/linux/allocator.c (LIBGOMP_USE_LIBNUMA): Define * libgomp.texi: Fix a typo; use 'fi' instead of its ligature char. (Memory allocation): Renamed from 'Memory allocation with libmemkind'; updated for libnuma usage. * testsuite/libgomp.c-c++-common/alloc-11.c: New test. * testsuite/libgomp.c-c++-common/alloc-12.c: New test.
38 lines
1.5 KiB
C
38 lines
1.5 KiB
C
/* Copyright (C) 2022-2023 Free Software Foundation, Inc.
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Contributed by Jakub Jelinek <jakub@redhat.com>.
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This file is part of the GNU Offloading and Multi Processing Library
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(libgomp).
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Libgomp is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* This file contains wrappers for the system allocation routines. Most
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places in the OpenMP API do not make any provision for failure, so in
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general we cannot allow memory allocation to fail. */
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#define _GNU_SOURCE
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#include "libgomp.h"
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#if defined(PLUGIN_SUPPORT) && defined(LIBGOMP_USE_PTHREADS)
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#define LIBGOMP_USE_MEMKIND
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#define LIBGOMP_USE_LIBNUMA
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#endif
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#include "../../allocator.c"
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