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Cheap fee calculations (#878)

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* TVM v6

* New tuple with unpacked config parameters in c7
* New instructions for calculating fees

* Change unpacked_config_tuple, fix typo

---------

Co-authored-by: SpyCheese <mikle98@yandex.ru>
This commit is contained in:
EmelyanenkoK 2024-01-26 15:43:53 +03:00 • committed by GitHub
parent e459aea8e8
commit 64b04e46d7
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GPG key ID: B5690EEEBB952194
12 changed files with 384 additions and 73 deletions
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26
crypto/block/transaction.cpp
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@ -1337,6 +1337,10 @@ Ref<vm::Tuple> Transaction::prepare_vm_c7(const ComputePhaseConfig& cfg) const {
// may only return tuple or raise Error (See crypto/block/mc-config.cpp#2223)
tuple.push_back(cfg.prev_blocks_info.not_null() ? vm::StackEntry(cfg.prev_blocks_info) : vm::StackEntry());
}
if (cfg.global_version >= 6) {
tuple.push_back(cfg.unpacked_config_tuple.not_null() ? vm::StackEntry(cfg.unpacked_config_tuple)
: vm::StackEntry()); // unpacked_config_tuple:[...]
}
auto tuple_ref = td::make_cnt_ref<std::vector<vm::StackEntry>>(std::move(tuple));
LOG(DEBUG) << "SmartContractInfo initialized with " << vm::StackEntry(tuple_ref).to_string();
return vm::make_tuple_ref(std::move(tuple_ref));
@ -1920,6 +1924,25 @@ td::uint64 MsgPrices::compute_fwd_fees(td::uint64 cells, td::uint64 bits) const
.lo();
}
/**
* Computes the forward fees for a message based on the number of cells and bits.
* Return the result as td::RefInt256
*
* msg_fwd_fees = (lump_price + ceil((bit_price * msg.bits + cell_price * msg.cells)/2^16)) nanograms
* ihr_fwd_fees = ceil((msg_fwd_fees * ihr_price_factor)/2^16) nanograms
* bits in the root cell of a message are not included in msg.bits (lump_price pays for them)
*
* @param cells The number of cells in the message.
* @param bits The number of bits in the message.
*
* @returns The computed forward fees for the message as td::RefInt256j.
*/
td::RefInt256 MsgPrices::compute_fwd_fees256(td::uint64 cells, td::uint64 bits) const {
return td::rshift(
td::make_refint(lump_price) + td::make_refint(bit_price) * bits + td::make_refint(cell_price) * cells, 16,
1); // divide by 2^16 with ceil rounding
}
/**
* Computes the forward fees and IHR fees for a message with the given number of cells and bits.
*
@ -3539,6 +3562,9 @@ td::Status FetchConfigParams::fetch_config_params(
if (compute_phase_cfg->global_version >= 4) {
compute_phase_cfg->prev_blocks_info = std::move(prev_blocks_info);
}
if (compute_phase_cfg->global_version >= 6) {
compute_phase_cfg->unpacked_config_tuple = config.get_unpacked_config_tuple(now);
}
compute_phase_cfg->suspended_addresses = config.get_suspended_addresses(now);
compute_phase_cfg->size_limits = size_limits;
}