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115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_VALIDATORS_VALIDATOR_H_INCLUDED
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#define RIPPLE_VALIDATORS_VALIDATOR_H_INCLUDED
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namespace ripple {
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namespace Validators {
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/** Tracks statistics on a validator. */
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class Validator
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{
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private:
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/** State of a ledger. */
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struct Ledger
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{
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Ledger() : closed (false), received (false)
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{ }
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bool closed; // `true` if the ledger was closed
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bool received; // `true` if we got a validation
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};
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/** Number of sources that reference this validator. */
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int m_refCount;
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/** Holds the state of all recent ledgers for this validator. */
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/** @{ */
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typedef CycledMap <RippleLedgerHash, Ledger, Count,
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RippleLedgerHash::hasher, RippleLedgerHash::key_equal> LedgerMap;
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LedgerMap m_ledgers;
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/** @} */
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public:
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Validator ()
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: m_refCount (0)
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, m_ledgers (ledgersPerValidator)
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{
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}
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/** Increment the number of references to this validator. */
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void addRef ()
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{ ++m_refCount; }
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/** Decrement the number of references to this validator.
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When the reference count reaches zero, the validator will
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be removed and no longer tracked.
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*/
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bool release ()
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{ return (--m_refCount) == 0; }
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/** Returns the composite performance statistics. */
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Count count () const
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{ return m_ledgers.front() + m_ledgers.back(); }
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/** Called upon receipt of a validation. */
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void receiveValidation (RippleLedgerHash const& ledgerHash)
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{
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std::pair <Ledger&, Count&> result (m_ledgers.insert (
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std::make_pair (ledgerHash, Ledger())));
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Ledger& ledger (result.first);
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Count& count (result.second);
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ledger.received = true;
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if (ledger.closed)
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{
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--count.expected;
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++count.closed;
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}
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else
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{
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++count.received;
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}
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}
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/** Called when a ledger is closed. */
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void ledgerClosed (RippleLedgerHash const& ledgerHash)
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{
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std::pair <Ledger&, Count&> result (m_ledgers.insert (
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std::make_pair (ledgerHash, Ledger())));
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Ledger& ledger (result.first);
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Count& count (result.second);
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ledger.closed = true;
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if (ledger.received)
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{
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--count.received;
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++count.closed;
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}
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else
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{
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++count.expected;
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}
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}
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};
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}
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}
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#endif
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