savepoint.hpp File Reference

#include <vector>
#include "foedus/assert_nd.hpp"
#include "foedus/cxx11.hpp"
#include "foedus/epoch.hpp"
#include "foedus/externalize/externalizable.hpp"
#include "foedus/log/log_id.hpp"
#include "foedus/snapshot/snapshot_id.hpp"

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Classes
struct	foedus::savepoint::Savepoint
	The information we maintain in savepoint manager and externalize to a file. More...
struct	foedus::savepoint::LoggerSavepointInfo
	Information in savepoint for one logger. More...
struct	foedus::savepoint::FixedSavepoint
	Savepoint that can be stored in shared memory. More...

Namespaces
	foedus
	Root package of FOEDUS (Fast Optimistic Engine for Data Unification Services).
	foedus::savepoint
	Savepoint Manager, which durably and atomically remembers what happened in the engine occasionally (eg.

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Class Documentation

struct foedus::savepoint::LoggerSavepointInfo

Information in savepoint for one logger.

Definition at line 140 of file savepoint.hpp.

Class Members
LogFileOrdinal	current_log_file_	Indicates the log file each logger is currently appending to.
uint64_t	current_log_file_offset_durable_	Indicates the exclusive end of durable region in the current log file. In other words, epochs are larger than durable_epoch_ from this offset. During restart, current log files are truncated to this size to discard incomplete logs.
LogFileOrdinal	oldest_log_file_	Ordinal of the oldest active log file in each logger. Invariant oldest_log_files_[x] <= current_log_files_[x] Each logger writes out files suffixed with ordinal (eg ".0", ".1"...). The older logs files are deactivated and deleted after log gleaner consumes them. This variable indicates the oldest active file for each logger.
uint64_t	oldest_log_file_offset_begin_	Indicates the inclusive beginning of active region in the oldest log file.