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eth2.0-specs
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Reduce on-chain computation

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Hsiao-Wei Wang 2018-12-13 01:39:34 +08:00
parent 92b9253ecb
commit 130e45ee39
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1 changed files with 2 additions and 1 deletions
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specs/core/0_beacon-chain.md
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@ -608,6 +608,7 @@ MAX_DEPOSIT: constant(uint256) = 32 # ETH
GWEI_PER_ETH: constant(uint256) = 1000000000 # 10**9 GWEI_PER_ETH: constant(uint256) = 1000000000 # 10**9
CHAIN_START_FULL_DEPOSIT_THRESHOLD: constant(uint256) = 16384 # 2**14 CHAIN_START_FULL_DEPOSIT_THRESHOLD: constant(uint256) = 16384 # 2**14
DEPOSIT_CONTRACT_TREE_DEPTH: constant(uint256) = 32 DEPOSIT_CONTRACT_TREE_DEPTH: constant(uint256) = 32
TWO_TO_POWER_OF_TREE_DEPTH: constant(uint256) = 4294967296 # 2**32
SECONDS_PER_DAY: constant(uint256) = 86400 SECONDS_PER_DAY: constant(uint256) = 86400
Eth1Deposit: event({previous_receipt_root: bytes32, data: bytes[2064], deposit_count: uint256}) Eth1Deposit: event({previous_receipt_root: bytes32, data: bytes[2064], deposit_count: uint256})
@ -623,7 +624,7 @@ def deposit(deposit_parameters: bytes[2048]):
assert msg.value >= as_wei_value(MIN_DEPOSIT, "ether") assert msg.value >= as_wei_value(MIN_DEPOSIT, "ether")
assert msg.value <= as_wei_value(MAX_DEPOSIT, "ether") assert msg.value <= as_wei_value(MAX_DEPOSIT, "ether")
index: uint256 = self.deposit_count + 2**DEPOSIT_CONTRACT_TREE_DEPTH index: uint256 = self.deposit_count + TWO_TO_POWER_OF_TREE_DEPTH
msg_gwei_bytes8: bytes[8] = slice(concat("", convert(msg.value / GWEI_PER_ETH, bytes32)), start=24, len=8) msg_gwei_bytes8: bytes[8] = slice(concat("", convert(msg.value / GWEI_PER_ETH, bytes32)), start=24, len=8)
timestamp_bytes8: bytes[8] = slice(concat("", convert(block.timestamp, bytes32)), start=24, len=8) timestamp_bytes8: bytes[8] = slice(concat("", convert(block.timestamp, bytes32)), start=24, len=8)
deposit_data: bytes[2064] = concat(msg_gwei_bytes8, timestamp_bytes8, deposit_parameters) deposit_data: bytes[2064] = concat(msg_gwei_bytes8, timestamp_bytes8, deposit_parameters)