Module grin_core::global

Values that should be shared across all modules, without necessarily having to pass them all over the place, but aren’t consensus values. should be used sparingly.

Structs

GLOBAL_ACCEPT_FEE_BASE	Global acccept fee base that must be initialized once on node startup. This is accessed via get_acccept_fee_base() which allows the global value to be overridden on a per-thread basis (for testing).
GLOBAL_CHAIN_TYPE	Global chain_type that must be initialized once on node startup. This is accessed via get_chain_type() which allows the global value to be overridden on a per-thread basis (for testing).
GLOBAL_FUTURE_TIME_LIMIT	Global future time limit that must be initialized once on node startup. This is accessed via get_future_time_limit() which allows the global value to be overridden on a per-thread basis (for testing).
GLOBAL_NRD_FEATURE_ENABLED	Global feature flag for NRD kernel support. If enabled NRD kernels are treated as valid after HF3 (based on header version). If disabled NRD kernels are invalid regardless of header version or block height.

Enums

ChainTypes

Types of chain a server can run with, dictates the genesis block and and mining parameters used.

Constants

ACCEPT_FEE_BASE	minimum transaction fee per unit of transaction weight for mempool acceptance
AUTOMATED_TESTING_COINBASE_MATURITY	Automated testing coinbase maturity
AUTOMATED_TESTING_CUT_THROUGH_HORIZON	Testing cut through horizon in blocks
AUTOMATED_TESTING_MIN_EDGE_BITS	Automated testing edge_bits
AUTOMATED_TESTING_PROOF_SIZE	Automated testing proof size
CHAIN_TYPE	Mainnet|Testnet|UserTesting|AutomatedTesting
COMPACTION_CHECK	Trigger compaction check on average every day for all nodes. Randomized per node - roll the dice on every block to decide. Will compact the txhashset to remove pruned data. Will also remove old blocks and associated data from the database. For a node configured as “archival_mode = true” only the txhashset will be compacted.
DEFAULT_ACCEPT_FEE_BASE	Default unit of fee per tx weight, making each output cost about a Grincent
DEFAULT_FUTURE_TIME_LIMIT	default Future Time Limit (FTL) of 5 minutes
FUTURE_TIME_LIMIT	maximum number of seconds into future for timestamp of block to be acceptable
NRD_FEATURE_ENABLED	Local feature flag for NRD kernel support.
PEER_EXPIRATION_REMOVE_TIME	Constant that expresses defunct peer timeout in seconds to be used in checks.
PROTOCOL_VERSION	An enum collecting sets of parameters used throughout the code wherever mining is needed. This should allow for different sets of parameters for different purposes, e.g. CI, User testing, production values Define these here, as they should be developer-set, not really tweakable by users The default “local” protocol version for this node. We negotiate compatible versions with each peer via Hand/Shake. Note: We also use a specific (possible different) protocol version for both the backend database and MMR data files. This defines the p2p layer protocol version for this node.
STUCK_PEER_KICK_TIME	If a peer’s last updated difficulty is 2 hours ago and its difficulty’s lower than ours, we’re sure this peer is a stuck node, and we will kick out such kind of stuck peers.
TESTING_INITIAL_DIFFICULTY	Testing initial block difficulty
TESTING_MAX_BLOCK_WEIGHT	Testing max_block_weight (artifically low, just enough to support a few txs).
TESTING_STATE_SYNC_THRESHOLD	Testing state sync threshold in blocks
TESTING_TXHASHSET_ARCHIVE_INTERVAL	Number of blocks to reuse a txhashset zip for (automated testing and user testing).
TXHASHSET_ARCHIVE_INTERVAL	Number of blocks to reuse a txhashset zip for.
USER_TESTING_COINBASE_MATURITY	User testing coinbase maturity
USER_TESTING_CUT_THROUGH_HORIZON	Testing cut through horizon in blocks
USER_TESTING_MIN_EDGE_BITS	User testing edge_bits
USER_TESTING_PROOF_SIZE	User testing proof size

Functions

base_edge_bits	Reference edge_bits used to compute factor on higher Cuck(at)oo graph sizes, while the min_edge_bits can be changed on a soft fork, changing base_edge_bits is a hard fork.
coinbase_maturity	Coinbase maturity for coinbases to be spent
create_pow_context	Return either a cuckaroo* context or a cuckatoo context Single change point
cut_through_horizon	Horizon at which we can cut-through and do full local pruning
difficulty_data_to_vector	Converts an iterator of block difficulty data to more a more manageable vector and pads if needed (which will) only be needed for the first few blocks after genesis
get_accept_fee_base	Accept Fee Base Look at thread local config first. If not set fallback to global config. Default to grin-cent/20 if global config unset.
get_chain_type	Get the chain type via thread_local, fallback to global chain_type.
get_future_time_limit	Future Time Limit (FTL) Look at thread local config first. If not set fallback to global config. Default to false if global config unset.
header_size_bytes	Calculates the size of a header (in bytes) given a number of edge bits in the PoW
init_global_accept_fee_base	One time initialization of the global accept fee base Will panic if we attempt to re-initialize this (via OneTime).
init_global_chain_type	One time initialization of the global chain_type. Will panic if we attempt to re-initialize this (via OneTime).
init_global_future_time_limit	One time initialization of the global future time limit Will panic if we attempt to re-initialize this (via OneTime).
init_global_nrd_enabled	One time initialization of the global NRD feature flag. Will panic if we attempt to re-initialize this (via OneTime).
initial_block_difficulty	Initial mining difficulty
initial_graph_weight	Initial mining secondary scale
is_nrd_enabled	Is the NRD feature flag enabled? Look at thread local config first. If not set fallback to global config. Default to false if global config unset.
is_production_mode	Are we in production mode? Production defined as a live public network, testnet[n] or mainnet.
is_testnet	Are we in testnet? Note: We do not have a corresponding is_mainnet() as we want any tests to be as close as possible to “mainnet” configuration as possible. We want to avoid missing any mainnet only code paths.
max_block_weight	Maximum allowed block weight.
max_tx_weight	Maximum allowed transaction weight (1 weight unit ~= 32 bytes)
min_edge_bits	The minimum acceptable edge_bits
min_wtema_graph_weight	Minimum valid graph weight post HF4
proofsize	The proofsize
set_local_accept_fee_base	Set the accept fee base on a per-thread basis via thread_local storage.
set_local_chain_type	Set the chain type on a per-thread basis via thread_local storage.
set_local_future_time_limit	Set the future time limit on a per-thread basis via thread_local storage.
set_local_nrd_enabled	Explicitly enable the local NRD feature flag.
state_sync_threshold	Threshold at which we can request a txhashset (and full blocks from)
txhashset_archive_interval	Number of blocks to reuse a txhashset zip for.