foedus::storage::PageVersionStatus Struct Reference

Detailed Description

Definition at line 59 of file page.hpp.

#include <page.hpp>

Public Types
enum	Constants {   kRetiredBit = 1 << 31, kMovedBit = 1 << 30, kHasNextPageBit = 1 << 29, kReservedBit2 = 1 << 28,   kVersionMask = 0x0FFFFFFF }

Public Member Functions
	PageVersionStatus ()
void	reset () __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 PageVersionStatus &other) const __attribute__((always_inline))
bool	operator!= (const PageVersionStatus &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
uint32_t	status_

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

Member Enumeration Documentation

enum foedus::storage::PageVersionStatus::Constants

Enumerator
kRetiredBit
kMovedBit
kHasNextPageBit	so far used only in hash storage, where data page forms a linked list
kReservedBit2
kVersionMask

Definition at line 60 of file page.hpp.

                 {
    kRetiredBit = 1 << 31,
    kMovedBit = 1 << 30,
    kHasNextPageBit = 1 << 29,
    kReservedBit2 = 1 << 28,
    kVersionMask = 0x0FFFFFFF,
  };

Constructor & Destructor Documentation

foedus::storage::PageVersionStatus::PageVersionStatus ( )

inline

Definition at line 68 of file page.hpp.

: status_(0) {}

Member Function Documentation

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

inline

Definition at line 99 of file page.hpp.

References kVersionMask, and status_.

Referenced by foedus::storage::PageVersion::get_version_counter(), increment_version_counter(), and foedus::storage::operator<<().

                                                      {
    return status_ & kVersionMask;
  }

Here is the caller graph for this function:

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

inline

Definition at line 73 of file page.hpp.

References kHasNextPageBit, and status_.

Referenced by foedus::storage::PageVersion::has_next_page(), foedus::storage::hash::HashStoragePimpl::locate_record(), and set_has_next_page().

{ return (status_ & kHasNextPageBit) != 0; }

Here is the caller graph for this function:

void foedus::storage::PageVersionStatus::increment_version_counter ( )

inline

Definition at line 103 of file page.hpp.

References ASSERT_ND, get_version_counter(), kVersionMask, and status_.

Referenced by foedus::storage::sequential::SequentialPage::append_record_nosync(), and foedus::storage::PageVersion::increment_version_counter().

                                                      {
    // we do this only when we insert a new key or split, so this never overflows.
    ASSERT_ND(get_version_counter() < kVersionMask);
    ++status_;
  }

Here is the call graph for this function:

Here is the caller graph for this function:

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

inline

Definition at line 71 of file page.hpp.

References kMovedBit, and status_.

Referenced by foedus::storage::PageVersion::is_moved(), foedus::storage::operator<<(), set_has_next_page(), set_moved(), set_retired(), and foedus::storage::masstree::MasstreeCursor::Route::was_stably_moved().

{ return (status_ & kMovedBit) != 0; }

Here is the caller graph for this function:

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

inline

Definition at line 72 of file page.hpp.

References kRetiredBit, and status_.

Referenced by foedus::storage::PageVersion::is_retired(), foedus::storage::operator<<(), set_has_next_page(), and set_retired().

{ return (status_ & kRetiredBit) != 0; }

Here is the caller graph for this function:

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

inline

Definition at line 78 of file page.hpp.

References status_.

                                                                      {
    return status_ != other.status_;
  }

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

inline

Definition at line 75 of file page.hpp.

References status_.

                                                                      {
    return status_ == other.status_;
  }

void foedus::storage::PageVersionStatus::reset ( )

inline

Definition at line 69 of file page.hpp.

References status_.

Referenced by foedus::storage::PageVersion::reset().

{ status_ = 0; }

Here is the caller graph for this function:

void foedus::storage::PageVersionStatus::set_has_next_page ( )

inline

Definition at line 91 of file page.hpp.

References ASSERT_ND, has_next_page(), is_moved(), is_retired(), kHasNextPageBit, and status_.

Referenced by foedus::storage::PageVersion::set_has_next_page().

                                              {
    ASSERT_ND(!is_moved());
    ASSERT_ND(!is_retired());
    ASSERT_ND(!has_next_page());
    status_ |= kHasNextPageBit;
  }

Here is the call graph for this function:

Here is the caller graph for this function:

void foedus::storage::PageVersionStatus::set_moved ( )

inline

Definition at line 82 of file page.hpp.

References ASSERT_ND, is_moved(), kMovedBit, and status_.

Referenced by foedus::storage::PageVersion::set_moved().

                                      {
    ASSERT_ND(!is_moved());
    status_ |= kMovedBit;
  }

Here is the call graph for this function:

Here is the caller graph for this function:

void foedus::storage::PageVersionStatus::set_retired ( )

inline

Definition at line 86 of file page.hpp.

References ASSERT_ND, is_moved(), is_retired(), kRetiredBit, and status_.

Referenced by foedus::storage::PageVersion::set_retired().

                                        {
    ASSERT_ND(is_moved());  // we always set moved bit first. retire must happen later.
    ASSERT_ND(!is_retired());
    status_ |= kRetiredBit;
  }

Here is the call graph for this function:

Here is the caller graph for this function:

Friends And Related Function Documentation

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

friend

Definition at line 33 of file page.cpp.

                                                                  {
  o << "<PageVersionStatus><flags>"
    << (v.is_moved() ? "M" : " ")
    << (v.is_retired() ? "R" : " ")
    << "</flags><ver>" << v.get_version_counter() << "</ver>"
    << "</PageVersionStatus>";
  return o;
}

Member Data Documentation

uint32_t foedus::storage::PageVersionStatus::status_

Definition at line 111 of file page.hpp.

Referenced by foedus::storage::masstree::Adopt::adopt_case_a(), get_version_counter(), foedus::storage::masstree::grow_case_a_common(), has_next_page(), increment_version_counter(), is_moved(), is_retired(), operator!=(), foedus::storage::PageVersion::operator!=(), operator==(), foedus::storage::PageVersion::operator==(), reset(), set_has_next_page(), set_moved(), and set_retired().

---

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

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