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
77
78
79
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include "tb_mem.h"
/*
* Memory management routines for temporary memory.
* That memory is used only during build phase and is released after
* build is finished.
* Note, that tb_pool/tb_alloc() are not supposed to return NULL.
* Instead, in the case of failure to allocate memory,
* it would do siglongjmp(pool->fail).
* It is responsibility of the caller to save the proper context/environment,
* in the pool->fail before calling tb_alloc() for the given pool first time.
*/
static struct tb_mem_block *
tb_pool(struct tb_mem_pool *pool, size_t sz)
{
struct tb_mem_block *block;
uint8_t *ptr;
size_t size;
size = sz + pool->alignment - 1;
block = calloc(1, size + sizeof(*pool->block));
if (block == NULL) {
RTE_LOG(ERR, MALLOC, "%s(%zu)\n failed, currently allocated "
"by pool: %zu bytes\n", __func__, sz, pool->alloc);
siglongjmp(pool->fail, -ENOMEM);
return NULL;
}
block->pool = pool;
block->next = pool->block;
pool->block = block;
pool->alloc += size;
ptr = (uint8_t *)(block + 1);
block->mem = RTE_PTR_ALIGN_CEIL(ptr, pool->alignment);
block->size = size - (block->mem - ptr);
return block;
}
void *
tb_alloc(struct tb_mem_pool *pool, size_t size)
{
struct tb_mem_block *block;
void *ptr;
size_t new_sz;
size = RTE_ALIGN_CEIL(size, pool->alignment);
block = pool->block;
if (block == NULL || block->size < size) {
new_sz = (size > pool->min_alloc) ? size : pool->min_alloc;
block = tb_pool(pool, new_sz);
}
ptr = block->mem;
block->size -= size;
block->mem += size;
return ptr;
}
void
tb_free_pool(struct tb_mem_pool *pool)
{
struct tb_mem_block *next, *block;
for (block = pool->block; block != NULL; block = next) {
next = block->next;
free(block);
}
pool->block = NULL;
pool->alloc = 0;
}
|
