mirror of
https://github.com/bitcoin/bitcoin.git
synced 2026-09-13 22:41:25 +02:00
fa5f297748
-BEGIN VERIFY SCRIPT- sed --in-place --regexp-extended \ 's;( 20[0-2][0-9])(-20[0-2][0-9])? The Bitcoin Core developers;\1-present The Bitcoin Core developers;g' \ $( git grep -l 'The Bitcoin Core developers' -- ':(exclude)COPYING' ':(exclude)src/ipc/libmultiprocess' ':(exclude)src/minisketch' ) -END VERIFY SCRIPT-
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
|
// Copyright (c) 2009-present The Bitcoin Core developers
|
|
// Distributed under the MIT software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#ifndef BITCOIN_SUPPORT_ALLOCATORS_ZEROAFTERFREE_H
|
|
#define BITCOIN_SUPPORT_ALLOCATORS_ZEROAFTERFREE_H
|
|
|
|
#include <support/cleanse.h>
|
|
|
|
#include <memory>
|
|
#include <vector>
|
|
|
|
template <typename T>
|
|
struct zero_after_free_allocator {
|
|
using value_type = T;
|
|
|
|
zero_after_free_allocator() noexcept = default;
|
|
template <typename U>
|
|
zero_after_free_allocator(const zero_after_free_allocator<U>&) noexcept
|
|
{
|
|
}
|
|
|
|
T* allocate(std::size_t n)
|
|
{
|
|
return std::allocator<T>{}.allocate(n);
|
|
}
|
|
|
|
void deallocate(T* p, std::size_t n)
|
|
{
|
|
if (p != nullptr)
|
|
memory_cleanse(p, sizeof(T) * n);
|
|
std::allocator<T>{}.deallocate(p, n);
|
|
}
|
|
|
|
template <typename U>
|
|
friend bool operator==(const zero_after_free_allocator&, const zero_after_free_allocator<U>&) noexcept
|
|
{
|
|
return true;
|
|
}
|
|
};
|
|
|
|
/** Byte-vector that clears its contents before deletion. */
|
|
using SerializeData = std::vector<std::byte, zero_after_free_allocator<std::byte>>;
|
|
|
|
#endif // BITCOIN_SUPPORT_ALLOCATORS_ZEROAFTERFREE_H
|