1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
* Copyright © 2018 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef _UTIL_VMA_H
#define _UTIL_VMA_H
#include <stdint.h>
#include <stdio.h>
#include "list.h"
#ifdef __cplusplus
extern "C" {
#endif
struct util_vma_heap {
struct list_head holes;
/** Total size of free memory. */
uint64_t free_size;
/** If true, util_vma_heap_alloc will prefer high addresses
*
* Default is true.
*/
bool alloc_high;
/**
* If non-zero, util_vma_heap_alloc will avoid allocating regions which
* span (1 << nospan_shift) ranges. For example, to avoid allocations
* which straddle 4GB boundaries, use nospan_shift=log2(4GB)
*/
unsigned nospan_shift;
};
void util_vma_heap_init(struct util_vma_heap *heap,
uint64_t start, uint64_t size);
void util_vma_heap_finish(struct util_vma_heap *heap);
uint64_t util_vma_heap_alloc(struct util_vma_heap *heap,
uint64_t size, uint64_t alignment);
bool util_vma_heap_alloc_addr(struct util_vma_heap *heap,
uint64_t addr, uint64_t size);
void util_vma_heap_free(struct util_vma_heap *heap,
uint64_t offset, uint64_t size);
void util_vma_heap_print(struct util_vma_heap *heap, FILE *fp,
const char *tab, uint64_t total_size);
#ifdef __cplusplus
} /* extern C */
#endif
#endif /* _UTIL_DEBUG_H */
|
