Epoch Struct Reference

#include <Epoch.h>

Public Member Functions
	Epoch ()
	Epoch (const int32_t epoch_floor, const int32_t epoch_ceiling)
int32_t	floor () const
int32_t	ceiling () const
void	floor (const int32_t epoch_floor)
void	ceiling (const int32_t epoch_ceiling)
int32_t	increment ()
int8_t *	storage_ptr ()

Static Public Member Functions
static size_t	byte_size ()
static int64_t	min_allowable_epoch ()
static int64_t	max_allowable_epoch ()

Private Attributes
int64_t	epoch_storage [2]

Detailed Description

Definition at line 30 of file Epoch.h.

Constructor & Destructor Documentation

Epoch::Epoch ( )

inline

Definition at line 32 of file Epoch.h.

References epoch_storage.

          {
    epoch_storage[0] = std::numeric_limits<int32_t>::min();
    epoch_storage[1] = 0;
  }

Epoch::Epoch ( const int32_t  epoch_floor, const int32_t  epoch_ceiling  )

inline

Definition at line 37 of file Epoch.h.

References epoch_storage.

                                                                {
    epoch_storage[0] = epoch_floor;
    epoch_storage[1] = epoch_ceiling;
  }

Member Function Documentation

static size_t Epoch::byte_size ( )

inlinestatic

Definition at line 63 of file Epoch.h.

Referenced by File_Namespace::FileMgr::createEpochFile(), File_Namespace::FileMgr::openAndReadEpochFile(), File_Namespace::TableFileMgr::TableFileMgr(), File_Namespace::TableFileMgr::writeAndSyncEpochToDisk(), and File_Namespace::FileMgr::writeAndSyncEpochToDisk().

{ return 2 * sizeof(int64_t); }

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int32_t Epoch::ceiling ( ) const

inline

Definition at line 44 of file Epoch.h.

References epoch_storage.

Referenced by File_Namespace::FileMgr::FileMgr(), File_Namespace::TableFileMgr::getEpoch(), File_Namespace::TableFileMgr::incrementEpoch(), File_Namespace::FileMgr::init(), File_Namespace::FileMgr::migrateEpochFileV0(), File_Namespace::FileMgr::openFiles(), and File_Namespace::FileMgr::setEpoch().

{ return epoch_storage[1]; }

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void Epoch::ceiling ( const int32_t  epoch_ceiling )

inline

Definition at line 52 of file Epoch.h.

References epoch_storage.

{ epoch_storage[1] = epoch_ceiling; }

int32_t Epoch::floor ( ) const

inline

Definition at line 43 of file Epoch.h.

References epoch_storage.

Referenced by File_Namespace::FileMgr::init(), File_Namespace::FileMgr::migrateEpochFileV0(), File_Namespace::FileMgr::rollOffOldData(), and File_Namespace::FileMgr::setEpoch().

{ return epoch_storage[0]; }

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void Epoch::floor ( const int32_t  epoch_floor )

inline

Definition at line 47 of file Epoch.h.

References epoch_storage.

                                               {
    epoch_storage[0] = epoch_floor;
    ;
  }

int32_t Epoch::increment ( )

inline

Definition at line 54 of file Epoch.h.

References epoch_storage.

Referenced by File_Namespace::TableFileMgr::incrementEpoch().

{ return ++epoch_storage[1]; }

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static int64_t Epoch::max_allowable_epoch ( )

inlinestatic

Definition at line 69 of file Epoch.h.

Referenced by File_Namespace::TableFileMgr::incrementEpoch(), and File_Namespace::FileMgr::incrementEpoch().

                                              {
    return std::numeric_limits<int32_t>::max() - 1;
  }

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static int64_t Epoch::min_allowable_epoch ( )

inlinestatic

Definition at line 65 of file Epoch.h.

Referenced by File_Namespace::CachingFileMgr::epoch(), and File_Namespace::FileMgr::migrateEpochFileV0().

                                              {
    return std::numeric_limits<int32_t>::min();
  }

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int8_t* Epoch::storage_ptr ( )

inline

Allows access to ptr to epoch internal storage for atomic file reads and writes to epoch storage

Definition at line 61 of file Epoch.h.

References epoch_storage.

Referenced by File_Namespace::FileMgr::openAndReadEpochFile(), File_Namespace::TableFileMgr::TableFileMgr(), File_Namespace::TableFileMgr::writeAndSyncEpochToDisk(), and File_Namespace::FileMgr::writeAndSyncEpochToDisk().

{ return reinterpret_cast<int8_t*>(&epoch_storage[0]); }

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Member Data Documentation

int64_t Epoch::epoch_storage[2]

private

Definition at line 74 of file Epoch.h.

Referenced by ceiling(), Epoch(), floor(), increment(), and storage_ptr().

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The documentation for this struct was generated from the following file:

• /home/jenkins-slave/workspace/core-os-doxygen/DataMgr/FileMgr/Epoch.h