mirror of
https://github.com/ton-blockchain/ton
synced 2025-03-09 15:40:10 +00:00
92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#pragma once
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namespace vm {
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namespace detail {
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template <class CellT, size_t Size = 0>
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class CellWithArrayStorage : public CellT {
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public:
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template <class... ArgsT>
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CellWithArrayStorage(ArgsT&&... args) : CellT(std::forward<ArgsT>(args)...) {
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}
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~CellWithArrayStorage() {
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CellT::destroy_storage(get_storage());
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}
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template <class... ArgsT>
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static std::unique_ptr<CellT> create(size_t storage_size, ArgsT&&... args) {
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static_assert(CellT::max_storage_size <= 40 * 8, "");
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//size = 128 + 32 + 8;
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auto size = (storage_size + 7) / 8;
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#define CASE(size) \
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case (size): \
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return std::make_unique<CellWithArrayStorage<CellT, (size)*8>>(std::forward<ArgsT>(args)...);
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#define CASE2(offset) CASE(offset) CASE(offset + 1)
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#define CASE8(offset) CASE2(offset) CASE2(offset + 2) CASE2(offset + 4) CASE2(offset + 6)
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#define CASE32(offset) CASE8(offset) CASE8(offset + 8) CASE8(offset + 16) CASE8(offset + 24)
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switch (size) { CASE32(0) CASE8(32) }
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#undef CASE
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#undef CASE2
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#undef CASE8
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#undef CASE32
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LOG(FATAL) << "TOO BIG " << storage_size;
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UNREACHABLE();
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}
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private:
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alignas(alignof(void*)) char storage_[Size];
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const char* get_storage() const final {
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return storage_;
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}
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char* get_storage() final {
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return storage_;
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}
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};
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template <class CellT>
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class CellWithUniquePtrStorage : public CellT {
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public:
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template <class... ArgsT>
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CellWithUniquePtrStorage(size_t storage_size, ArgsT&&... args)
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: CellT(std::forward<ArgsT>(args)...), storage_(std::make_unique<char[]>(storage_size)) {
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}
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~CellWithUniquePtrStorage() {
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CellT::destroy_storage(get_storage());
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}
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template <class... ArgsT>
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static std::unique_ptr<CellT> create(size_t storage_size, ArgsT&&... args) {
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return std::make_unique<CellWithUniquePtrStorage>(storage_size, std::forward<ArgsT>(args)...);
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}
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private:
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std::unique_ptr<char[]> storage_;
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const char* get_storage() const final {
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CHECK(storage_);
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return storage_.get();
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}
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char* get_storage() final {
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CHECK(storage_);
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return storage_.get();
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}
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};
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} // namespace detail
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} // namespace vm
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