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Any identifier starting with two _, or one _ followed by a capital letter is reserved for the compiler and thus must not be used. See: https://stackoverflow.com/a/228797/7130273 -BEGIN VERIFY SCRIPT- s() { git grep -l "$1" src | xargs sed -i "s/$1/$2/g"; } s '__pushKV' 'pushKVEnd' s '_EraseTx' 'EraseTxNoLock' s '_Other' 'Other' -END VERIFY SCRIPT-
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_SUPPORT_ALLOCATORS_ZEROAFTERFREE_H
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#define BITCOIN_SUPPORT_ALLOCATORS_ZEROAFTERFREE_H
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#include <support/cleanse.h>
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#include <memory>
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#include <vector>
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template <typename T>
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struct zero_after_free_allocator : public std::allocator<T> {
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using base = std::allocator<T>;
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using traits = std::allocator_traits<base>;
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using size_type = typename traits::size_type;
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using difference_type = typename traits::difference_type;
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using pointer = typename traits::pointer;
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using const_pointer = typename traits::const_pointer;
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using value_type = typename traits::value_type;
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zero_after_free_allocator() noexcept {}
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zero_after_free_allocator(const zero_after_free_allocator& a) noexcept : base(a) {}
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template <typename U>
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zero_after_free_allocator(const zero_after_free_allocator<U>& a) noexcept : base(a)
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{
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}
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~zero_after_free_allocator() noexcept {}
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template <typename Other>
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struct rebind {
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typedef zero_after_free_allocator<Other> other;
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};
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void deallocate(T* p, std::size_t n)
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{
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if (p != nullptr)
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memory_cleanse(p, sizeof(T) * n);
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std::allocator<T>::deallocate(p, n);
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}
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};
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/** Byte-vector that clears its contents before deletion. */
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using SerializeData = std::vector<std::byte, zero_after_free_allocator<std::byte>>;
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#endif // BITCOIN_SUPPORT_ALLOCATORS_ZEROAFTERFREE_H
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