/usr/include/botan/mem_pool.h is in libbotan1.8-dev 1.8.13-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /*
* Pooling Allocator
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_POOLING_ALLOCATOR_H__
#define BOTAN_POOLING_ALLOCATOR_H__
#include <botan/allocate.h>
#include <botan/exceptn.h>
#include <botan/mutex.h>
#include <utility>
#include <vector>
namespace Botan {
/*
* Pooling Allocator
*/
class BOTAN_DLL Pooling_Allocator : public Allocator
{
public:
void* allocate(u32bit);
void deallocate(void*, u32bit);
void destroy();
Pooling_Allocator(Mutex*);
~Pooling_Allocator();
private:
void get_more_core(u32bit);
byte* allocate_blocks(u32bit);
virtual void* alloc_block(u32bit) = 0;
virtual void dealloc_block(void*, u32bit) = 0;
class BOTAN_DLL Memory_Block
{
public:
Memory_Block(void*);
static u32bit bitmap_size() { return BITMAP_SIZE; }
static u32bit block_size() { return BLOCK_SIZE; }
bool contains(void*, u32bit) const throw();
byte* alloc(u32bit) throw();
void free(void*, u32bit) throw();
bool operator<(const Memory_Block& other) const
{
if(buffer < other.buffer && other.buffer < buffer_end)
return false;
return (buffer < other.buffer);
}
private:
typedef u64bit bitmap_type;
static const u32bit BITMAP_SIZE = 8 * sizeof(bitmap_type);
static const u32bit BLOCK_SIZE = 64;
bitmap_type bitmap;
byte* buffer, *buffer_end;
};
std::vector<Memory_Block> blocks;
std::vector<Memory_Block>::iterator last_used;
std::vector<std::pair<void*, u32bit> > allocated;
Mutex* mutex;
};
}
#endif
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