Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
2.0 KiB
62 lines
2.0 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
|
// Copyright (c) 2009-2013 The Bitcoin Core developers
|
|
// Distributed under the MIT software license, see the accompanying
|
|
// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
|
|
|
|
#ifndef BITCOIN_SUPPORT_ALLOCATORS_SECURE_H
|
|
#define BITCOIN_SUPPORT_ALLOCATORS_SECURE_H
|
|
|
|
#include "support/pagelocker.h"
|
|
|
|
#include <string>
|
|
|
|
//
|
|
// Allocator that locks its contents from being paged
|
|
// out of memory and clears its contents before deletion.
|
|
//
|
|
template <typename T>
|
|
struct secure_allocator : public std::allocator<T> {
|
|
// MSVC8 default copy constructor is broken
|
|
typedef std::allocator<T> base;
|
|
typedef typename base::size_type size_type;
|
|
typedef typename base::difference_type difference_type;
|
|
typedef typename base::pointer pointer;
|
|
typedef typename base::const_pointer const_pointer;
|
|
typedef typename base::reference reference;
|
|
typedef typename base::const_reference const_reference;
|
|
typedef typename base::value_type value_type;
|
|
secure_allocator() throw() {}
|
|
secure_allocator(const secure_allocator& a) throw() : base(a) {}
|
|
template <typename U>
|
|
secure_allocator(const secure_allocator<U>& a) throw() : base(a)
|
|
{
|
|
}
|
|
~secure_allocator() throw() {}
|
|
template <typename _Other>
|
|
struct rebind {
|
|
typedef secure_allocator<_Other> other;
|
|
};
|
|
|
|
T* allocate(std::size_t n, const void* hint = 0)
|
|
{
|
|
T* p;
|
|
p = std::allocator<T>::allocate(n, hint);
|
|
if (p != NULL)
|
|
LockedPageManager::Instance().LockRange(p, sizeof(T) * n);
|
|
return p;
|
|
}
|
|
|
|
void deallocate(T* p, std::size_t n)
|
|
{
|
|
if (p != NULL) {
|
|
memory_cleanse(p, sizeof(T) * n);
|
|
LockedPageManager::Instance().UnlockRange(p, sizeof(T) * n);
|
|
}
|
|
std::allocator<T>::deallocate(p, n);
|
|
}
|
|
};
|
|
|
|
// This is exactly like std::string, but with a custom allocator.
|
|
typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
|
|
|
|
#endif // BITCOIN_SUPPORT_ALLOCATORS_SECURE_H
|
|
|