StarPU Internal Handbook
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  *
5  * StarPU is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU Lesser General Public License as published by
7  * the Free Software Foundation; either version 2.1 of the License, or (at
8  * your option) any later version.
9  *
10  * StarPU is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13  *
14  * See the GNU Lesser General Public License in COPYING.LGPL for more details.
15  */
16 
17 #ifndef __MEMALLOC_H__
18 #define __MEMALLOC_H__
19 
22 #include <starpu.h>
23 #include <common/config.h>
24 
25 #include <common/list.h>
27 #include <datawizard/coherency.h>
28 #include <datawizard/copy_driver.h>
30 
32 
35 LIST_TYPE(_starpu_mem_chunk,
37  starpu_data_handle_t data;
38 
39  uint32_t footprint;
40 
41  /*
42  * When re-using a memchunk, the footprint of the data is not
43  * sufficient to determine whether two pieces of data have the same
44  * layout (there could be collision in the hash function ...) so we
45  * still keep a copy of the actual layout (ie. the data interface) to
46  * stay on the safe side while the memchunk is detached from an actual
47  * data.
48  */
49  struct starpu_data_interface_ops *ops;
50  void *chunk_interface;
51  size_t size_interface;
52 
54  unsigned automatically_allocated:1;
57  unsigned relaxed_coherency:2;
59  unsigned home:1;
61  unsigned clean:1;
63  unsigned diduse:1;
65  unsigned wontuse:1;
66 
73  size_t size;
74 
75  struct _starpu_data_replicate *replicate;
76 
81  struct _starpu_mem_chunk **remove_notify;
82 )
83 
84 void _starpu_init_mem_chunk_lists(void);
85 void _starpu_deinit_mem_chunk_lists(void);
86 void _starpu_mem_chunk_init_last(void);
87 void _starpu_request_mem_chunk_removal(starpu_data_handle_t handle, struct _starpu_data_replicate *replicate, unsigned node, size_t size);
88 int _starpu_allocate_memory_on_node(starpu_data_handle_t handle, struct _starpu_data_replicate *replicate, enum _starpu_is_prefetch is_prefetch);
89 size_t _starpu_free_all_automatically_allocated_buffers(unsigned node);
90 void _starpu_memchunk_recently_used(struct _starpu_mem_chunk *mc, unsigned node);
91 void _starpu_memchunk_wont_use(struct _starpu_mem_chunk *m, unsigned nodec);
92 void _starpu_memchunk_dirty(struct _starpu_mem_chunk *mc, unsigned node);
93 
94 void _starpu_display_memory_stats_by_node(int node);
95 size_t _starpu_memory_reclaim_generic(unsigned node, unsigned force, size_t reclaim);
96 int _starpu_is_reclaiming(unsigned node);
97 
98 void _starpu_mem_chunk_disk_register(unsigned disk_memnode);
99 
100 #endif
Definition: coherency.h:45
_starpu_is_prefetch
Definition: copy_driver.h:51