foedus::storage::PageVersion Struct Reference

Just a synonym of XctId to be used as a page lock mechanism. More...

Detailed Description

Just a synonym of XctId to be used as a page lock mechanism.

Each page has this in the header. Unlike [YANDONG12], this is just an McsWwLock. We maintain key count and permutation differently from [YANDONG12].

"is_deleted" flag is called "is_retired" to clarify what deletion means for a page. Also, epoch/ordinal has not much meaning for page. So, we only increment the ordinal part for each change. Epoch part is unused.

This object is a POD. All methods are inlined except stream.

Definition at line 129 of file page.hpp.

#include <page.hpp>

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Public Member Functions
	PageVersion () __attribute__((always_inline))
void	reset () __attribute__((always_inline))
	used only while page initialization More...
bool	is_locked () const __attribute__((always_inline))
bool	is_moved () const __attribute__((always_inline))
bool	is_retired () const __attribute__((always_inline))
bool	has_next_page () const __attribute__((always_inline))
bool	operator== (const PageVersion &other) const __attribute__((always_inline))
bool	operator!= (const PageVersion &other) const __attribute__((always_inline))
void	set_moved () __attribute__((always_inline))
void	set_retired () __attribute__((always_inline))
void	set_has_next_page () __attribute__((always_inline))
uint32_t	get_version_counter () const __attribute__((always_inline))
void	increment_version_counter () __attribute__((always_inline))

Public Attributes
xct::McsWwLock	lock_
PageVersionStatus	status_
uint32_t	unused_

Friends
std::ostream &	operator<< (std::ostream &o, const PageVersion &v)

Constructor & Destructor Documentation

foedus::storage::PageVersion::PageVersion ( )

inline

Definition at line 130 of file page.hpp.

: lock_(), status_() {}

Member Function Documentation

uint32_t foedus::storage::PageVersion::get_version_counter ( ) const

inline

Definition at line 160 of file page.hpp.

References foedus::storage::PageVersionStatus::get_version_counter(), and status_.

                                                      {
    return status_.get_version_counter();
  }

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bool foedus::storage::PageVersion::has_next_page ( ) const

inline

Definition at line 141 of file page.hpp.

References foedus::storage::PageVersionStatus::has_next_page(), and status_.

{ return status_.has_next_page(); }

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void foedus::storage::PageVersion::increment_version_counter ( )

inline

Definition at line 164 of file page.hpp.

References ASSERT_ND, foedus::storage::PageVersionStatus::increment_version_counter(), is_locked(), and status_.

                                                      {
    ASSERT_ND(is_locked());
    status_.increment_version_counter();
  }

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bool foedus::storage::PageVersion::is_locked ( ) const

inline

Definition at line 138 of file page.hpp.

References foedus::xct::McsWwLock::is_locked(), and lock_.

Referenced by increment_version_counter(), foedus::storage::masstree::MasstreePage::is_locked(), foedus::storage::hash::HashDataPage::is_locked(), foedus::storage::operator<<(), foedus::storage::hash::HashDataPage::reserve_record(), foedus::storage::hash::ReserveRecords::search_within_page(), set_has_next_page(), set_moved(), set_retired(), and foedus::storage::hash::HashStoragePimpl::verify_single_thread_intermediate().

{ return lock_.is_locked(); }

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bool foedus::storage::PageVersion::is_moved ( ) const

inline

Definition at line 139 of file page.hpp.

References foedus::storage::PageVersionStatus::is_moved(), and status_.

Referenced by foedus::storage::masstree::MasstreePage::has_foster_child(), foedus::storage::masstree::MasstreePage::is_moved(), foedus::storage::operator<<(), foedus::storage::masstree::MasstreeIntermediatePage::release_pages_recursive(), foedus::storage::masstree::MasstreeBorderPage::release_pages_recursive(), foedus::storage::masstree::MasstreeIntermediatePage::release_pages_recursive_parallel(), and foedus::storage::hash::HashStoragePimpl::verify_single_thread_intermediate().

{ return status_.is_moved(); }

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bool foedus::storage::PageVersion::is_retired ( ) const

inline

Definition at line 140 of file page.hpp.

References foedus::storage::PageVersionStatus::is_retired(), and status_.

Referenced by foedus::storage::masstree::MasstreePage::is_retired(), foedus::thread::ThreadPimpl::is_volatile_page_retired(), foedus::storage::operator<<(), and foedus::storage::hash::HashStoragePimpl::verify_single_thread_intermediate().

{ return status_.is_retired(); }

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bool foedus::storage::PageVersion::operator!= ( const PageVersion &  other ) const

inline

Definition at line 144 of file page.hpp.

References foedus::storage::PageVersionStatus::status_, and status_.

{ return status_ != other.status_; }

bool foedus::storage::PageVersion::operator== ( const PageVersion &  other ) const

inline

Definition at line 143 of file page.hpp.

References foedus::storage::PageVersionStatus::status_, and status_.

{ return status_ == other.status_; }

void foedus::storage::PageVersion::reset ( )

inline

used only while page initialization

Definition at line 133 of file page.hpp.

References lock_, foedus::storage::PageVersionStatus::reset(), foedus::xct::McsWwLock::reset(), and status_.

Referenced by foedus::storage::PageHeader::init_snapshot(), and foedus::storage::PageHeader::init_volatile().

                                {
    lock_.reset();
    status_.reset();
  }

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void foedus::storage::PageVersion::set_has_next_page ( )

inline

Definition at line 154 of file page.hpp.

References ASSERT_ND, is_locked(), foedus::storage::PageVersionStatus::set_has_next_page(), and status_.

Referenced by foedus::storage::hash::ReserveRecords::create_new_record_in_tail_page(), and foedus::storage::hash::ReserveRecords::find_and_lock_spacious_tail().

                                              {
    ASSERT_ND(is_locked());
    status_.set_has_next_page();
  }

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void foedus::storage::PageVersion::set_moved ( )

inline

Definition at line 146 of file page.hpp.

References ASSERT_ND, is_locked(), foedus::storage::PageVersionStatus::set_moved(), and status_.

Referenced by foedus::storage::masstree::SplitBorder::run(), and foedus::storage::masstree::MasstreePage::set_moved().

                                      {
    ASSERT_ND(is_locked());
    status_.set_moved();
  }

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void foedus::storage::PageVersion::set_retired ( )

inline

Definition at line 150 of file page.hpp.

References ASSERT_ND, is_locked(), foedus::storage::PageVersionStatus::set_retired(), and status_.

Referenced by foedus::storage::masstree::MasstreePage::set_retired().

                                        {
    ASSERT_ND(is_locked());
    status_.set_retired();
  }

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Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  o, const PageVersion &  v  )

friend

Definition at line 42 of file page.cpp.

                                                            {
  o << "<PageVersion><locked>"
    << (v.is_locked() ? "L" : " ")
    << (v.is_moved() ? "M" : " ")
    << (v.is_retired() ? "R" : " ")
    << "</locked>" << v.status_
    << "</PageVersion>";
  return o;
}

Member Data Documentation

xct::McsWwLock foedus::storage::PageVersion::lock_

Definition at line 171 of file page.hpp.

Referenced by foedus::storage::masstree::MasstreePage::get_lock_address(), is_locked(), foedus::xct::SysxctLockList::release_all_locks(), and reset().

PageVersionStatus foedus::storage::PageVersion::status_

Definition at line 172 of file page.hpp.

Referenced by foedus::storage::masstree::Adopt::adopt_case_a(), foedus::storage::sequential::SequentialPage::append_record_nosync(), get_version_counter(), foedus::storage::masstree::grow_case_a_common(), has_next_page(), increment_version_counter(), is_moved(), is_retired(), foedus::storage::masstree::MasstreeStoragePimpl::locate_record(), foedus::storage::hash::HashStoragePimpl::locate_record(), foedus::storage::masstree::MasstreeStoragePimpl::locate_record_normalized(), operator!=(), foedus::storage::operator<<(), operator==(), foedus::xct::XctManagerPimpl::precommit_xct_verify_page_version_set(), reset(), set_has_next_page(), set_moved(), and set_retired().

uint32_t foedus::storage::PageVersion::unused_

Definition at line 173 of file page.hpp.

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

• /home/shino/foedus_code/foedus-core/include/foedus/storage/page.hpp