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/*
* Mlock Allocator
* (C) 2012 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_MLOCK_ALLOCATOR_H__
#define BOTAN_MLOCK_ALLOCATOR_H__
#include <botan/types.h>
#include <vector>
#include <mutex>
namespace Botan {
class BOTAN_DLL mlock_allocator
{
public:
static mlock_allocator& instance();
void* allocate(size_t num_elems, size_t elem_size);
bool deallocate(void* p, size_t num_elems, size_t elem_size);
mlock_allocator(const mlock_allocator&) = delete;
mlock_allocator& operator=(const mlock_allocator&) = delete;
private:
mlock_allocator();
~mlock_allocator();
std::mutex m_mutex;
std::vector<std::pair<size_t, size_t>> m_freelist;
byte* m_pool = nullptr;
size_t m_poolsize = 0;
};
}
#endif
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