blob: 4c0b5d85a7adf50adde77bb5e9bb9478173dbc52 (
plain)
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
|
/*************************************************
* GNU MP Memory Handlers Source File *
* (C) 1999-2006 The Botan Project *
*************************************************/
#include <botan/eng_gmp.h>
#include <cstring>
#include <gmp.h>
namespace Botan {
namespace {
/*************************************************
* Allocator used by GNU MP *
*************************************************/
Allocator* gmp_alloc = 0;
/*************************************************
* Allocation Function for GNU MP *
*************************************************/
void* gmp_malloc(size_t n)
{
return gmp_alloc->allocate(n);
}
/*************************************************
* Reallocation Function for GNU MP *
*************************************************/
void* gmp_realloc(void* ptr, size_t old_n, size_t new_n)
{
void* new_buf = gmp_alloc->allocate(new_n);
std::memcpy(new_buf, ptr, std::min(old_n, new_n));
gmp_alloc->deallocate(ptr, old_n);
return new_buf;
}
/*************************************************
* Deallocation Function for GNU MP *
*************************************************/
void gmp_free(void* ptr, size_t n)
{
gmp_alloc->deallocate(ptr, n);
}
}
/*************************************************
* Set the GNU MP memory functions *
*************************************************/
void GMP_Engine::set_memory_hooks()
{
if(gmp_alloc == 0)
{
gmp_alloc = Allocator::get(true);
mp_set_memory_functions(gmp_malloc, gmp_realloc, gmp_free);
}
}
}
|
