Files
xahaud/src/LedgerTiming.h
JoelKatz ad12e318ba Allow a peer position to be removed from the consensus logic if the peer is
not responding. This version uses static timing. A peer takes a position
every 12 seconds and a position is valid for 20 seconds. It might make sense
to either make that timing adaptive or include a "validity time" field in
the position. However, I think this is really only going to be an issue in
fairly small networks (which is why we are seeing it).
2012-08-31 15:51:41 -07:00

70 lines
2.2 KiB
C++

#ifndef __LEDGERTIMING__
#define __LEDGERTIMING__
// The number of seconds a ledger may remain idle before closing
# define LEDGER_IDLE_INTERVAL 15
// The number of seconds a validation remains current after its ledger's close time
// This is a safety to protect against very old validations and the time it takes to adjust
// the close time accuracy window
# define LEDGER_VAL_INTERVAL 600
// The number of seconds before a close time that we consider a validation acceptable
// This protects against extreme clock errors
# define LEDGER_EARLY_INTERVAL 240
// The number of milliseconds we wait minimum to ensure participation
# define LEDGER_MIN_CONSENSUS 2000
// Initial resolution of ledger close time
# define LEDGER_TIME_ACCURACY 30
// How often to increase resolution
# define LEDGER_RES_INCREASE 8
// How often to decrease resolution
# define LEDGER_RES_DECREASE 1
// How often we check state or change positions (in milliseconds)
# define LEDGER_GRANULARITY 1000
// How long we consider a proposal fresh
# define PROPOSE_FRESHNESS 20
// How often we force generating a new proposal to keep ours fresh
# define PROPOSE_INTERVAL 12
// Avalanche tuning
#define AV_INIT_CONSENSUS_PCT 50 // percentage of nodes on our UNL that must vote yes
#define AV_MID_CONSENSUS_TIME 50 // percentage of previous close time before we advance
#define AV_MID_CONSENSUS_PCT 65 // percentage of nodes that most vote yes after advancing
#define AV_LATE_CONSENSUS_TIME 85 // percentage of previous close time before we advance
#define AV_LATE_CONSENSUS_PCT 70 // percentage of nodes that most vote yes after advancing
class ContinuousLedgerTiming
{
public:
static int LedgerTimeResolution[];
// Returns the number of seconds the ledger was or should be open
// Call when a consensus is reached and when any transaction is relayed to be added
static int shouldClose(
bool anyTransactions,
int previousProposers, int proposersClosed,
int previousSeconds, int currentSeconds,
int idleInterval);
static bool haveConsensus(
int previousProposers, int currentProposers,
int currentAgree, int currentClosed,
int previousAgreeTime, int currentAgreeTime);
static int getNextLedgerTimeResolution(int previousResolution, bool previousAgree, int ledgerSeq);
};
#endif