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Add comments to LedgerHistory

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This commit is contained in:
JoelKatz
2014-04-29 02:42:09 -07:00
committed by Vinnie Falco
parent d1f5006e44
commit 7cffd0e0f5
2 changed files with 41 additions and 2 deletions
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3
src/ripple_app/ledger/LedgerHistory.cpp
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@@ -86,6 +86,7 @@ Ledger::pointer LedgerHistory::getLedgerBySeq (std::uint32_t index)
assert (ret->getLedgerSeq () == index);
{
// Add this ledger to the local tracking by index
LedgersByHash::ScopedLockType sl (m_ledgers_by_hash.peekMutex ());
assert (ret->isImmutable ());
@@ -127,7 +128,7 @@ void LedgerHistory::builtLedger (Ledger::ref ledger)
ConsensusValidated::ScopedLockType sl (
m_consensus_validated.peekMutex());
boost::shared_ptr< std::pair< LedgerHash, LedgerHash > > entry = boost::make_shared<std::pair< LedgerHash, LedgerHash >>();
auto entry = boost::make_shared<std::pair< LedgerHash, LedgerHash >>();
m_consensus_validated.canonicalize(index, entry, false);
if (entry->first != hash)

40
src/ripple_app/ledger/LedgerHistory.h
View File

@@ -23,35 +23,70 @@
namespace ripple {
// VFALCO TODO Rename to OldLedgers ?
/** Retains historical ledgers. */
class LedgerHistory : beast::LeakChecked <LedgerHistory>
{
public:
LedgerHistory ();
/** Track a ledger
@return `true` if the ledger was already tracked
*/
bool addLedger (Ledger::pointer ledger, bool validated);
/** Get the ledgers_by_hash cache hit rate
@return the hit rate
*/
float getCacheHitRate ()
{
return m_ledgers_by_hash.getHitRate ();
}
/** Get a ledger given its squence number
@param ledgerIndex The sequence number of the desired ledger
*/
Ledger::pointer getLedgerBySeq (LedgerIndex ledgerIndex);
/** Get a ledger's hash given its sequence number
@param ledgerIndex The sequence number of the desired ledger
@return The hash of the specified ledger
*/
LedgerHash getLedgerHash (LedgerIndex ledgerIndex);
/** Retrieve a ledger given its hash
@param ledgerHash The hash of the requested ledger
@return The ledger requested
*/
Ledger::pointer getLedgerByHash (LedgerHash const& ledgerHash);
/** Set the history cache's paramters
@param size The target size of the cache
@param age The target age of the cache, in seconds
*/
void tune (int size, int age);
/** Remove stale cache entries
*/
void sweep ()
{
m_ledgers_by_hash.sweep ();
m_consensus_validated.sweep ();
}
/** Report that we have locally built a particular ledger
*/
void builtLedger (Ledger::ref);
/** Report that we have validated a particular ledger
*/
void validatedLedger (Ledger::ref);
/** Repair a hash to index mapping
@param ledgerIndex The index whose mapping is to be repaired
@param ledgerHash The hash it is to be mapped to
@return `true` if the mapping was repaired
*/
bool fixIndex(LedgerIndex ledgerIndex, LedgerHash const& ledgerHash);
private:
@@ -59,7 +94,10 @@ private:
LedgersByHash m_ledgers_by_hash;
//typedef std::pair <LedgerHash, LedgerHash>
// Maps ledger indexes to the corresponding hashes
// For debug and logging purposes
// 1) The hash of a ledger with that index we build
// 2) The hash of a ledger with that index we validated
typedef TaggedCache <LedgerIndex,
std::pair< LedgerHash, LedgerHash >> ConsensusValidated;
ConsensusValidated m_consensus_validated;