tid_t Class Reference
[Identifiers]

Collaboration diagram for tid_t:

[legend]List of all members.

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Detailed Description

Transaction ID.

Transaction IDs are 64-bit quantities. They can be constructed of and used as a pair of two 32-bit value, the high and low parts, or they can be constructed from a single 64-bit value.

Note:

The two-part nature comes from the days before 64-bit architectures, and it's retained for the purpose of printing transaction ids. They are output in the form "hi.low", which is more readable than printing as a 64-bit value. In no other way need we maintain high and low parts.

Examples:

log_exceed.cpp.

Definition at line 82 of file tid_t.h.

Public Types
typedef w_base_t::uint8_t	datum_t
enum
Public Member Functions
	tid_t ()
	tid_t (uint4_t l, uint4_t h)
	tid_t (datum_t x)
uint4_t	get_hi () const
uint4_t	get_lo () const
tid_t &	operator= (const tid_t &t)
bool	invalid () const
datum_t	atomic_incr ()
tid_t &	atomic_assign_max (const tid_t &tid)
tid_t &	atomic_assign_min (const tid_t &tid)
bool	operator== (const tid_t &tid) const
bool	operator!= (const tid_t &tid) const
bool	operator< (const tid_t &tid) const
bool	operator<= (const tid_t &tid) const
bool	operator> (const tid_t &tid) const
bool	operator>= (const tid_t &tid) const
Static Public Attributes
static const tid_t	Max
static const tid_t	null

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The documentation for this class was generated from the following files:

• src/common/tid_t.h
• src/common/tid_t.cpp

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