StarPU Internal Handbook
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memalloc.h
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1/* StarPU --- Runtime system for heterogeneous multicore architectures.
2 *
3 * Copyright (C) 2008-2021 Université de Bordeaux, CNRS (LaBRI UMR 5800), Inria
4 * Copyright (C) 2021 Federal University of Rio Grande do Sul (UFRGS)
5 *
6 * StarPU is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as published by
8 * the Free Software Foundation; either version 2.1 of the License, or (at
9 * your option) any later version.
10 *
11 * StarPU is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 *
15 * See the GNU Lesser General Public License in COPYING.LGPL for more details.
16 */
17
18#ifndef __MEMALLOC_H__
19#define __MEMALLOC_H__
20
23#include <starpu.h>
24#include <common/config.h>
25
26#include <common/list.h>
31
32#pragma GCC visibility push(hidden)
33
35
38LIST_TYPE(_starpu_mem_chunk,
40 starpu_data_handle_t data;
41
42 uint32_t footprint;
43
44 /*
45 * When re-using a memchunk, the footprint of the data is not
46 * sufficient to determine whether two pieces of data have the same
47 * layout (there could be collision in the hash function ...) so we
48 * still keep a copy of the actual layout (ie. the data interface) to
49 * stay on the safe side while the memchunk is detached from an actual
50 * data.
51 */
52 struct starpu_data_interface_ops *ops;
53 void *chunk_interface;
54 size_t size_interface;
55
57 unsigned automatically_allocated:1;
60 unsigned relaxed_coherency:2;
62 unsigned home:1;
64 unsigned clean:1;
66 unsigned wontuse:1;
67
74 size_t size;
75
76 struct _starpu_data_replicate *replicate;
77
82 struct _starpu_mem_chunk **remove_notify;
83)
84
85void _starpu_init_mem_chunk_lists(void);
86void _starpu_deinit_mem_chunk_lists(void);
87void _starpu_mem_chunk_init_last(void);
88void _starpu_request_mem_chunk_removal(starpu_data_handle_t handle, struct _starpu_data_replicate *replicate, unsigned node, size_t size);
89int _starpu_allocate_memory_on_node(starpu_data_handle_t handle, struct _starpu_data_replicate *replicate, enum starpu_is_prefetch is_prefetch, int only_fast_alloc);
90size_t _starpu_free_all_automatically_allocated_buffers(unsigned node);
91void _starpu_memchunk_recently_used(struct _starpu_mem_chunk *mc, unsigned node);
92void _starpu_memchunk_wont_use(struct _starpu_mem_chunk *m, unsigned nodec);
93void _starpu_memchunk_dirty(struct _starpu_mem_chunk *mc, unsigned node);
94
95size_t _starpu_memory_reclaim_generic(unsigned node, unsigned force, size_t reclaim, enum starpu_is_prefetch is_prefetch);
96int _starpu_is_reclaiming(unsigned node);
97
98void _starpu_mem_chunk_disk_register(unsigned disk_memnode);
99
100#pragma GCC visibility pop
101
102#endif
Definition coherency.h:47