Consensus::BIP9Deployment Struct Reference

Struct for each individual consensus rule change using BIP9. More...

#include <params.h>

Public Attributes
int	bit {28}
	Bit position to select the particular bit in nVersion. More...
int64_t	nStartTime {NEVER_ACTIVE}
	Start MedianTime for version bits miner confirmation. More...
int64_t	nTimeout {NEVER_ACTIVE}
	Timeout/expiry MedianTime for the deployment attempt. More...
int	min_activation_height {0}
	If lock in occurs, delay activation until at least this block height. More...
uint32_t	period {2016}
	Period of blocks to check signalling in (usually retarget period, ie params.DifficultyAdjustmentInterval()) More...
uint32_t	threshold {1916}
	Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period, which is also used for BIP9 deployments. More...

Static Public Attributes
static constexpr int64_t	NO_TIMEOUT = std::numeric_limits<int64_t>::max()
	Constant for nTimeout very far in the future. More...
static constexpr int64_t	ALWAYS_ACTIVE = -1
	Special value for nStartTime indicating that the deployment is always active. More...
static constexpr int64_t	NEVER_ACTIVE = -2
	Special value for nStartTime indicating that the deployment is never active. More...

Detailed Description

Struct for each individual consensus rule change using BIP9.

Definition at line 44 of file params.h.

Member Data Documentation

ALWAYS_ACTIVE

constexpr int64_t Consensus::BIP9Deployment::ALWAYS_ACTIVE = -1

staticconstexpr

Special value for nStartTime indicating that the deployment is always active.

This is useful for testing, as it means tests don't need to deal with the activation process (which takes at least 3 BIP9 intervals). Only tests that specifically test the behaviour during activation cannot use this.

Definition at line 72 of file params.h.

bit

int Consensus::BIP9Deployment::bit {28}

Bit position to select the particular bit in nVersion.

Definition at line 46 of file params.h.

min_activation_height

int Consensus::BIP9Deployment::min_activation_height {0}

If lock in occurs, delay activation until at least this block height.

Note that activation will only occur on a retarget boundary.

Definition at line 55 of file params.h.

NEVER_ACTIVE

constexpr int64_t Consensus::BIP9Deployment::NEVER_ACTIVE = -2

staticconstexpr

Special value for nStartTime indicating that the deployment is never active.

This is useful for integrating the code changes for a new feature prior to deploying it on some or all networks.

Definition at line 77 of file params.h.

NO_TIMEOUT

constexpr int64_t Consensus::BIP9Deployment::NO_TIMEOUT = std::numeric_limits<int64_t>::max()

staticconstexpr

Constant for nTimeout very far in the future.

Definition at line 66 of file params.h.

nStartTime

int64_t Consensus::BIP9Deployment::nStartTime {NEVER_ACTIVE}

Start MedianTime for version bits miner confirmation.

Can be a date in the past

Definition at line 48 of file params.h.

nTimeout

int64_t Consensus::BIP9Deployment::nTimeout {NEVER_ACTIVE}

Timeout/expiry MedianTime for the deployment attempt.

Definition at line 50 of file params.h.

period

uint32_t Consensus::BIP9Deployment::period {2016}

Period of blocks to check signalling in (usually retarget period, ie params.DifficultyAdjustmentInterval())

Definition at line 57 of file params.h.

threshold

uint32_t Consensus::BIP9Deployment::threshold {1916}

Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period, which is also used for BIP9 deployments.

Examples: 1916 for 95%, 1512 for testchains.

Definition at line 63 of file params.h.

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The documentation for this struct was generated from the following file:

• src/consensus/params.h