// This file is part of Substrate. // Copyright (C) Parity Technologies (UK) Ltd. // SPDX-License-Identifier: Apache-2.0 // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. //! This module contains the cost schedule and supporting code that constructs a //! sane default schedule from a `WeightInfo` implementation. use crate::{wasm::Determinism, weights::WeightInfo, Config}; use codec::{Decode, Encode}; use frame_support::{weights::Weight, DefaultNoBound}; use pallet_contracts_proc_macro::{ScheduleDebug, WeightDebug}; use scale_info::TypeInfo; #[cfg(feature = "std")] use serde::{Deserialize, Serialize}; use sp_runtime::RuntimeDebug; use sp_std::marker::PhantomData; use wasm_instrument::{gas_metering, parity_wasm::elements}; /// Definition of the cost schedule and other parameterizations for the wasm vm. /// /// Its [`Default`] implementation is the designated way to initialize this type. It uses /// the benchmarked information supplied by [`Config::WeightInfo`]. All of its fields are /// public and can therefore be modified. For example in order to change some of the limits /// and set a custom instruction weight version the following code could be used: /// ```rust /// use pallet_contracts::{Schedule, Limits, InstructionWeights, Config}; /// /// fn create_schedule() -> Schedule { /// Schedule { /// limits: Limits { /// globals: 3, /// parameters: 3, /// memory_pages: 16, /// table_size: 3, /// br_table_size: 3, /// .. Default::default() /// }, /// instruction_weights: InstructionWeights { /// version: 5, /// .. Default::default() /// }, /// .. Default::default() /// } /// } /// ``` /// /// # Note /// /// Please make sure to bump the [`InstructionWeights::version`] whenever substantial /// changes are made to its values. #[cfg_attr(feature = "std", derive(Serialize, Deserialize))] #[cfg_attr(feature = "std", serde(bound(serialize = "", deserialize = "")))] #[derive(Clone, Encode, Decode, PartialEq, Eq, ScheduleDebug, DefaultNoBound, TypeInfo)] #[scale_info(skip_type_params(T))] pub struct Schedule { /// Describes the upper limits on various metrics. pub limits: Limits, /// The weights for individual wasm instructions. pub instruction_weights: InstructionWeights, /// The weights for each imported function a contract is allowed to call. pub host_fn_weights: HostFnWeights, } /// Describes the upper limits on various metrics. /// /// # Note /// /// The values in this struct should never be decreased. The reason is that decreasing those /// values will break existing contracts which are above the new limits when a /// re-instrumentation is triggered. #[cfg_attr(feature = "std", derive(Serialize, Deserialize))] #[derive(Clone, Encode, Decode, PartialEq, Eq, RuntimeDebug, TypeInfo)] pub struct Limits { /// The maximum number of topics supported by an event. pub event_topics: u32, /// Maximum number of globals a module is allowed to declare. /// /// Globals are not limited through the linear memory limit `memory_pages`. pub globals: u32, /// Maximum number of locals a function can have. /// /// As wasm engine initializes each of the local, we need to limit their number to confine /// execution costs. pub locals: u32, /// Maximum numbers of parameters a function can have. /// /// Those need to be limited to prevent a potentially exploitable interaction with /// the stack height instrumentation: The costs of executing the stack height /// instrumentation for an indirectly called function scales linearly with the amount /// of parameters of this function. Because the stack height instrumentation itself is /// is not weight metered its costs must be static (via this limit) and included in /// the costs of the instructions that cause them (call, call_indirect). pub parameters: u32, /// Maximum number of memory pages allowed for a contract. pub memory_pages: u32, /// Maximum number of elements allowed in a table. /// /// Currently, the only type of element that is allowed in a table is funcref. pub table_size: u32, /// Maximum number of elements that can appear as immediate value to the br_table instruction. pub br_table_size: u32, /// The maximum length of a subject in bytes used for PRNG generation. pub subject_len: u32, /// The maximum size of a storage value and event payload in bytes. pub payload_len: u32, /// The maximum node runtime memory. This is for integrity checks only and does not affect the /// real setting. pub runtime_memory: u32, } impl Limits { /// The maximum memory size in bytes that a contract can occupy. pub fn max_memory_size(&self) -> u32 { self.memory_pages * 64 * 1024 } } /// Describes the weight for all categories of supported wasm instructions. /// /// There there is one field for each wasm instruction that describes the weight to /// execute one instruction of that name. There are a few exceptions: /// /// 1. If there is a i64 and a i32 variant of an instruction we use the weight /// of the former for both. /// 2. The following instructions are free of charge because they merely structure the /// wasm module and cannot be spammed without making the module invalid (and rejected): /// End, Unreachable, Return, Else /// 3. The following instructions cannot be benchmarked because they are removed by any /// real world execution engine as a preprocessing step and therefore don't yield a /// meaningful benchmark result. However, in contrast to the instructions mentioned /// in 2. they can be spammed. We price them with the same weight as the "default" /// instruction (i64.const): Block, Loop, Nop /// 4. We price both i64.const and drop as InstructionWeights.i64const / 2. The reason /// for that is that we cannot benchmark either of them on its own but we need their /// individual values to derive (by subtraction) the weight of all other instructions /// that use them as supporting instructions. Supporting means mainly pushing arguments /// and dropping return values in order to maintain a valid module. #[cfg_attr(feature = "std", derive(Serialize, Deserialize))] #[derive(Clone, Encode, Decode, PartialEq, Eq, ScheduleDebug, TypeInfo)] #[scale_info(skip_type_params(T))] pub struct InstructionWeights { /// Version of the instruction weights. /// /// # Note /// /// Should be incremented whenever any instruction weight is changed. The /// reason is that changes to instruction weights require a re-instrumentation /// in order to apply the changes to an already deployed code. The re-instrumentation /// is triggered by comparing the version of the current schedule with the version the code was /// instrumented with. Changes usually happen when pallet_contracts is re-benchmarked. /// /// Changes to other parts of the schedule should not increment the version in /// order to avoid unnecessary re-instrumentations. pub version: u32, /// Weight to be used for instructions which don't have benchmarks assigned. /// /// This weight is used whenever a code is uploaded with [`Determinism::Relaxed`] /// and an instruction (usually a float instruction) is encountered. This weight is **not** /// used if a contract is uploaded with [`Determinism::Enforced`]. If this field is set to /// `0` (the default) only deterministic codes are allowed to be uploaded. pub fallback: u32, pub i64const: u32, pub i64load: u32, pub i64store: u32, pub select: u32, pub r#if: u32, pub br: u32, pub br_if: u32, pub br_table: u32, pub br_table_per_entry: u32, pub call: u32, pub call_indirect: u32, pub call_per_local: u32, pub local_get: u32, pub local_set: u32, pub local_tee: u32, pub global_get: u32, pub global_set: u32, pub memory_current: u32, pub memory_grow: u32, pub i64clz: u32, pub i64ctz: u32, pub i64popcnt: u32, pub i64eqz: u32, pub i64extendsi32: u32, pub i64extendui32: u32, pub i32wrapi64: u32, pub i64eq: u32, pub i64ne: u32, pub i64lts: u32, pub i64ltu: u32, pub i64gts: u32, pub i64gtu: u32, pub i64les: u32, pub i64leu: u32, pub i64ges: u32, pub i64geu: u32, pub i64add: u32, pub i64sub: u32, pub i64mul: u32, pub i64divs: u32, pub i64divu: u32, pub i64rems: u32, pub i64remu: u32, pub i64and: u32, pub i64or: u32, pub i64xor: u32, pub i64shl: u32, pub i64shrs: u32, pub i64shru: u32, pub i64rotl: u32, pub i64rotr: u32, /// The type parameter is used in the default implementation. #[codec(skip)] pub _phantom: PhantomData, } /// Describes the weight for each imported function that a contract is allowed to call. #[cfg_attr(feature = "std", derive(Serialize, Deserialize))] #[derive(Clone, Encode, Decode, PartialEq, Eq, WeightDebug, TypeInfo)] #[scale_info(skip_type_params(T))] pub struct HostFnWeights { /// Weight of calling `seal_caller`. pub caller: Weight, /// Weight of calling `seal_is_contract`. pub is_contract: Weight, /// Weight of calling `seal_code_hash`. pub code_hash: Weight, /// Weight of calling `seal_own_code_hash`. pub own_code_hash: Weight, /// Weight of calling `seal_caller_is_origin`. pub caller_is_origin: Weight, /// Weight of calling `seal_caller_is_root`. pub caller_is_root: Weight, /// Weight of calling `seal_address`. pub address: Weight, /// Weight of calling `seal_gas_left`. pub gas_left: Weight, /// Weight of calling `seal_balance`. pub balance: Weight, /// Weight of calling `seal_value_transferred`. pub value_transferred: Weight, /// Weight of calling `seal_minimum_balance`. pub minimum_balance: Weight, /// Weight of calling `seal_block_number`. pub block_number: Weight, /// Weight of calling `seal_now`. pub now: Weight, /// Weight of calling `seal_weight_to_fee`. pub weight_to_fee: Weight, /// Weight of calling `gas`. pub gas: Weight, /// Weight of calling `seal_input`. pub input: Weight, /// Weight per input byte copied to contract memory by `seal_input`. pub input_per_byte: Weight, /// Weight of calling `seal_return`. pub r#return: Weight, /// Weight per byte returned through `seal_return`. pub return_per_byte: Weight, /// Weight of calling `seal_terminate`. pub terminate: Weight, /// Weight of calling `seal_random`. pub random: Weight, /// Weight of calling `seal_reposit_event`. pub deposit_event: Weight, /// Weight per topic supplied to `seal_deposit_event`. pub deposit_event_per_topic: Weight, /// Weight per byte of an event deposited through `seal_deposit_event`. pub deposit_event_per_byte: Weight, /// Weight of calling `seal_debug_message`. pub debug_message: Weight, /// Weight of calling `seal_debug_message` per byte of the message. pub debug_message_per_byte: Weight, /// Weight of calling `seal_set_storage`. pub set_storage: Weight, /// Weight per written byten of an item stored with `seal_set_storage`. pub set_storage_per_new_byte: Weight, /// Weight per overwritten byte of an item stored with `seal_set_storage`. pub set_storage_per_old_byte: Weight, /// Weight of calling `seal_set_code_hash`. pub set_code_hash: Weight, /// Weight of calling `seal_clear_storage`. pub clear_storage: Weight, /// Weight of calling `seal_clear_storage` per byte of the stored item. pub clear_storage_per_byte: Weight, /// Weight of calling `seal_contains_storage`. pub contains_storage: Weight, /// Weight of calling `seal_contains_storage` per byte of the stored item. pub contains_storage_per_byte: Weight, /// Weight of calling `seal_get_storage`. pub get_storage: Weight, /// Weight per byte of an item received via `seal_get_storage`. pub get_storage_per_byte: Weight, /// Weight of calling `seal_take_storage`. pub take_storage: Weight, /// Weight per byte of an item received via `seal_take_storage`. pub take_storage_per_byte: Weight, /// Weight of calling `seal_transfer`. pub transfer: Weight, /// Weight of calling `seal_call`. pub call: Weight, /// Weight of calling `seal_delegate_call`. pub delegate_call: Weight, /// Weight surcharge that is claimed if `seal_call` does a balance transfer. pub call_transfer_surcharge: Weight, /// Weight per byte that is cloned by supplying the `CLONE_INPUT` flag. pub call_per_cloned_byte: Weight, /// Weight of calling `seal_instantiate`. pub instantiate: Weight, /// Weight surcharge that is claimed if `seal_instantiate` does a balance transfer. pub instantiate_transfer_surcharge: Weight, /// Weight per input byte supplied to `seal_instantiate`. pub instantiate_per_input_byte: Weight, /// Weight per salt byte supplied to `seal_instantiate`. pub instantiate_per_salt_byte: Weight, /// Weight of calling `seal_hash_sha_256`. pub hash_sha2_256: Weight, /// Weight per byte hashed by `seal_hash_sha_256`. pub hash_sha2_256_per_byte: Weight, /// Weight of calling `seal_hash_keccak_256`. pub hash_keccak_256: Weight, /// Weight per byte hashed by `seal_hash_keccak_256`. pub hash_keccak_256_per_byte: Weight, /// Weight of calling `seal_hash_blake2_256`. pub hash_blake2_256: Weight, /// Weight per byte hashed by `seal_hash_blake2_256`. pub hash_blake2_256_per_byte: Weight, /// Weight of calling `seal_hash_blake2_128`. pub hash_blake2_128: Weight, /// Weight per byte hashed by `seal_hash_blake2_128`. pub hash_blake2_128_per_byte: Weight, /// Weight of calling `seal_ecdsa_recover`. pub ecdsa_recover: Weight, /// Weight of calling `seal_ecdsa_to_eth_address`. pub ecdsa_to_eth_address: Weight, /// Weight of calling `sr25519_verify`. pub sr25519_verify: Weight, /// Weight per byte of calling `sr25519_verify`. pub sr25519_verify_per_byte: Weight, /// Weight of calling `reentrance_count`. pub reentrance_count: Weight, /// Weight of calling `account_reentrance_count`. pub account_reentrance_count: Weight, /// Weight of calling `instantiation_nonce`. pub instantiation_nonce: Weight, /// The type parameter is used in the default implementation. #[codec(skip)] pub _phantom: PhantomData, } macro_rules! replace_token { ($_in:tt $replacement:tt) => { $replacement }; } macro_rules! call_zero { ($name:ident, $( $arg:expr ),*) => { T::WeightInfo::$name($( replace_token!($arg 0) ),*) }; } macro_rules! cost_args { ($name:ident, $( $arg: expr ),+) => { (T::WeightInfo::$name($( $arg ),+).saturating_sub(call_zero!($name, $( $arg ),+))) } } macro_rules! cost_instr_no_params { ($name:ident) => { cost_args!($name, 1).ref_time() as u32 }; } macro_rules! cost { ($name:ident) => { cost_args!($name, 1) }; } macro_rules! cost_instr { ($name:ident, $num_params:expr) => { cost_instr_no_params!($name) .saturating_sub((cost_instr_no_params!(instr_i64const) / 2).saturating_mul($num_params)) }; } impl Default for Limits { fn default() -> Self { Self { event_topics: 4, globals: 256, locals: 1024, parameters: 128, memory_pages: 16, // 4k function pointers (This is in count not bytes). table_size: 4096, br_table_size: 256, subject_len: 32, payload_len: 16 * 1024, runtime_memory: 1024 * 1024 * 128, } } } impl Default for InstructionWeights { fn default() -> Self { Self { version: 4, fallback: 0, i64const: cost_instr!(instr_i64const, 1), i64load: cost_instr!(instr_i64load, 2), i64store: cost_instr!(instr_i64store, 2), select: cost_instr!(instr_select, 4), r#if: cost_instr!(instr_if, 3), br: cost_instr!(instr_br, 2), br_if: cost_instr!(instr_br_if, 3), br_table: cost_instr!(instr_br_table, 3), br_table_per_entry: cost_instr!(instr_br_table_per_entry, 0), call: cost_instr!(instr_call, 2), call_indirect: cost_instr!(instr_call_indirect, 3), call_per_local: cost_instr!(instr_call_per_local, 0), local_get: cost_instr!(instr_local_get, 1), local_set: cost_instr!(instr_local_set, 1), local_tee: cost_instr!(instr_local_tee, 2), global_get: cost_instr!(instr_global_get, 1), global_set: cost_instr!(instr_global_set, 1), memory_current: cost_instr!(instr_memory_current, 1), memory_grow: cost_instr!(instr_memory_grow, 1), i64clz: cost_instr!(instr_i64clz, 2), i64ctz: cost_instr!(instr_i64ctz, 2), i64popcnt: cost_instr!(instr_i64popcnt, 2), i64eqz: cost_instr!(instr_i64eqz, 2), i64extendsi32: cost_instr!(instr_i64extendsi32, 2), i64extendui32: cost_instr!(instr_i64extendui32, 2), i32wrapi64: cost_instr!(instr_i32wrapi64, 2), i64eq: cost_instr!(instr_i64eq, 3), i64ne: cost_instr!(instr_i64ne, 3), i64lts: cost_instr!(instr_i64lts, 3), i64ltu: cost_instr!(instr_i64ltu, 3), i64gts: cost_instr!(instr_i64gts, 3), i64gtu: cost_instr!(instr_i64gtu, 3), i64les: cost_instr!(instr_i64les, 3), i64leu: cost_instr!(instr_i64leu, 3), i64ges: cost_instr!(instr_i64ges, 3), i64geu: cost_instr!(instr_i64geu, 3), i64add: cost_instr!(instr_i64add, 3), i64sub: cost_instr!(instr_i64sub, 3), i64mul: cost_instr!(instr_i64mul, 3), i64divs: cost_instr!(instr_i64divs, 3), i64divu: cost_instr!(instr_i64divu, 3), i64rems: cost_instr!(instr_i64rems, 3), i64remu: cost_instr!(instr_i64remu, 3), i64and: cost_instr!(instr_i64and, 3), i64or: cost_instr!(instr_i64or, 3), i64xor: cost_instr!(instr_i64xor, 3), i64shl: cost_instr!(instr_i64shl, 3), i64shrs: cost_instr!(instr_i64shrs, 3), i64shru: cost_instr!(instr_i64shru, 3), i64rotl: cost_instr!(instr_i64rotl, 3), i64rotr: cost_instr!(instr_i64rotr, 3), _phantom: PhantomData, } } } impl Default for HostFnWeights { fn default() -> Self { Self { caller: cost!(seal_caller), is_contract: cost!(seal_is_contract), code_hash: cost!(seal_code_hash), own_code_hash: cost!(seal_own_code_hash), caller_is_origin: cost!(seal_caller_is_origin), caller_is_root: cost!(seal_caller_is_root), address: cost!(seal_address), gas_left: cost!(seal_gas_left), balance: cost!(seal_balance), value_transferred: cost!(seal_value_transferred), minimum_balance: cost!(seal_minimum_balance), block_number: cost!(seal_block_number), now: cost!(seal_now), weight_to_fee: cost!(seal_weight_to_fee), // Manually remove proof size from basic block cost. // // Due to imperfect benchmarking some host functions incur a small // amount of proof size. Usually this is ok. However, charging a basic block is such // a frequent operation that this would be a vast overestimation. gas: cost!(seal_gas).set_proof_size(0), input: cost!(seal_input), input_per_byte: cost!(seal_input_per_byte), r#return: cost!(seal_return), return_per_byte: cost!(seal_return_per_byte), terminate: cost!(seal_terminate), random: cost!(seal_random), deposit_event: cost!(seal_deposit_event), deposit_event_per_topic: cost_args!(seal_deposit_event_per_topic_and_byte, 1, 0), deposit_event_per_byte: cost_args!(seal_deposit_event_per_topic_and_byte, 0, 1), debug_message: cost!(seal_debug_message), debug_message_per_byte: cost!(seal_debug_message_per_byte), set_storage: cost!(seal_set_storage), set_code_hash: cost!(seal_set_code_hash), set_storage_per_new_byte: cost!(seal_set_storage_per_new_byte), set_storage_per_old_byte: cost!(seal_set_storage_per_old_byte), clear_storage: cost!(seal_clear_storage), clear_storage_per_byte: cost!(seal_clear_storage_per_byte), contains_storage: cost!(seal_contains_storage), contains_storage_per_byte: cost!(seal_contains_storage_per_byte), get_storage: cost!(seal_get_storage), get_storage_per_byte: cost!(seal_get_storage_per_byte), take_storage: cost!(seal_take_storage), take_storage_per_byte: cost!(seal_take_storage_per_byte), transfer: cost!(seal_transfer), call: cost!(seal_call), delegate_call: cost!(seal_delegate_call), call_transfer_surcharge: cost_args!(seal_call_per_transfer_clone_byte, 1, 0), call_per_cloned_byte: cost_args!(seal_call_per_transfer_clone_byte, 0, 1), instantiate: cost!(seal_instantiate), instantiate_transfer_surcharge: cost_args!( seal_instantiate_per_transfer_input_salt_byte, 1, 0, 0 ), instantiate_per_input_byte: cost_args!( seal_instantiate_per_transfer_input_salt_byte, 0, 1, 0 ), instantiate_per_salt_byte: cost_args!( seal_instantiate_per_transfer_input_salt_byte, 0, 0, 1 ), hash_sha2_256: cost!(seal_hash_sha2_256), hash_sha2_256_per_byte: cost!(seal_hash_sha2_256_per_byte), hash_keccak_256: cost!(seal_hash_keccak_256), hash_keccak_256_per_byte: cost!(seal_hash_keccak_256_per_byte), hash_blake2_256: cost!(seal_hash_blake2_256), hash_blake2_256_per_byte: cost!(seal_hash_blake2_256_per_byte), hash_blake2_128: cost!(seal_hash_blake2_128), hash_blake2_128_per_byte: cost!(seal_hash_blake2_128_per_byte), ecdsa_recover: cost!(seal_ecdsa_recover), sr25519_verify: cost!(seal_sr25519_verify), sr25519_verify_per_byte: cost!(seal_sr25519_verify_per_byte), ecdsa_to_eth_address: cost!(seal_ecdsa_to_eth_address), reentrance_count: cost!(seal_reentrance_count), account_reentrance_count: cost!(seal_account_reentrance_count), instantiation_nonce: cost!(seal_instantiation_nonce), _phantom: PhantomData, } } } struct ScheduleRules<'a, T: Config> { schedule: &'a Schedule, determinism: Determinism, } impl Schedule { pub(crate) fn rules(&self, determinism: Determinism) -> impl gas_metering::Rules + '_ { ScheduleRules { schedule: self, determinism } } } impl<'a, T: Config> gas_metering::Rules for ScheduleRules<'a, T> { fn instruction_cost(&self, instruction: &elements::Instruction) -> Option { use self::elements::Instruction::*; let w = &self.schedule.instruction_weights; let weight = match *instruction { End | Unreachable | Return | Else => 0, I32Const(_) | I64Const(_) | Block(_) | Loop(_) | Nop | Drop => w.i64const, I32Load(_, _) | I32Load8S(_, _) | I32Load8U(_, _) | I32Load16S(_, _) | I32Load16U(_, _) | I64Load(_, _) | I64Load8S(_, _) | I64Load8U(_, _) | I64Load16S(_, _) | I64Load16U(_, _) | I64Load32S(_, _) | I64Load32U(_, _) => w.i64load, I32Store(_, _) | I32Store8(_, _) | I32Store16(_, _) | I64Store(_, _) | I64Store8(_, _) | I64Store16(_, _) | I64Store32(_, _) => w.i64store, Select => w.select, If(_) => w.r#if, Br(_) => w.br, BrIf(_) => w.br_if, Call(_) => w.call, GetLocal(_) => w.local_get, SetLocal(_) => w.local_set, TeeLocal(_) => w.local_tee, GetGlobal(_) => w.global_get, SetGlobal(_) => w.global_set, CurrentMemory(_) => w.memory_current, GrowMemory(_) => w.memory_grow, CallIndirect(_, _) => w.call_indirect, BrTable(ref data) => w .br_table .saturating_add(w.br_table_per_entry.saturating_mul(data.table.len() as u32)), I32Clz | I64Clz => w.i64clz, I32Ctz | I64Ctz => w.i64ctz, I32Popcnt | I64Popcnt => w.i64popcnt, I32Eqz | I64Eqz => w.i64eqz, I64ExtendSI32 => w.i64extendsi32, I64ExtendUI32 => w.i64extendui32, I32WrapI64 => w.i32wrapi64, I32Eq | I64Eq => w.i64eq, I32Ne | I64Ne => w.i64ne, I32LtS | I64LtS => w.i64lts, I32LtU | I64LtU => w.i64ltu, I32GtS | I64GtS => w.i64gts, I32GtU | I64GtU => w.i64gtu, I32LeS | I64LeS => w.i64les, I32LeU | I64LeU => w.i64leu, I32GeS | I64GeS => w.i64ges, I32GeU | I64GeU => w.i64geu, I32Add | I64Add => w.i64add, I32Sub | I64Sub => w.i64sub, I32Mul | I64Mul => w.i64mul, I32DivS | I64DivS => w.i64divs, I32DivU | I64DivU => w.i64divu, I32RemS | I64RemS => w.i64rems, I32RemU | I64RemU => w.i64remu, I32And | I64And => w.i64and, I32Or | I64Or => w.i64or, I32Xor | I64Xor => w.i64xor, I32Shl | I64Shl => w.i64shl, I32ShrS | I64ShrS => w.i64shrs, I32ShrU | I64ShrU => w.i64shru, I32Rotl | I64Rotl => w.i64rotl, I32Rotr | I64Rotr => w.i64rotr, // Returning None makes the gas instrumentation fail which we intend for // unsupported or unknown instructions. Offchain we might allow indeterminism and hence // use the fallback weight for those instructions. _ if matches!(self.determinism, Determinism::Relaxed) && w.fallback > 0 => w.fallback, _ => return None, }; Some(weight) } fn memory_grow_cost(&self) -> gas_metering::MemoryGrowCost { // We benchmarked the memory.grow instruction with the maximum allowed pages. // The cost for growing is therefore already included in the instruction cost. gas_metering::MemoryGrowCost::Free } fn call_per_local_cost(&self) -> u32 { self.schedule.instruction_weights.call_per_local } } #[cfg(test)] mod test { use super::*; use crate::tests::Test; #[test] fn print_test_schedule() { let schedule = Schedule::::default(); println!("{:#?}", schedule); } }