vec_t Class Reference

Inherits cvec_t.

Inherited by zvec_t.

Inheritance diagram for vec_t:

[legend]Collaboration diagram for vec_t:

[legend]List of all members.

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Detailed Description

Vector: a set of {pointer,length} pairs for memory manipulation.

This class is used throughout the storage manager and in its API for copy-in and copy-out.

Examples:

create_rec.cpp, lockid_test.cpp, log_exceed.cpp, sort_stream.cpp, and vtable_example.cpp.

Definition at line 261 of file vec_t.h.

Public Member Functions
	vec_t ()
	Construct empty vector.
	vec_t (const cvec_t &v1, const cvec_t &v2)
	Construct a vector that combines two others.
	vec_t (const void *p, size_t l)
	Construct a vector from a memory location and a length.
	vec_t (const vec_t &v, size_t offset, size_t limit)
	Construct a vector from a memory location + offset and a length.
const vec_t &	copy_from (const void *p, size_t limit, size_t offset=0) const
	Overwrites the data area to which the vector points.
vec_t &	copy_from (const cvec_t &v)
	Overwrites the data area to which the vector points.
vec_t &	copy_from (const cvec_t &v, size_t offset, size_t limit, size_t myoffset=0)
	Overwrites the data area to which the vector points.
CADDR_T	ptr (int index) const
	Return the pointer from the {pointer, length} pair at the given index.
size_t	len (int index) const
	Return the length from the {pointer, length} pair at the given index.
Static Public Attributes
static vec_t &	pos_inf
	A constant vector representing infinity. Used for key-value pairs, scans.
static vec_t &	neg_inf
	A constant vector representing negative infinity. Used for key-value pairs, scans.

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Member Function Documentation

const vec_t& vec_t::copy_from	(	const void *	p,
		size_t	limit,
		size_t	offset = 0
	)			const

Overwrites the data area to which the vector points.

Scatter limit bytes of data from the location at p into the locations identified by this vector.

vec_t& vec_t::copy_from

(

const cvec_t &

v

)

Overwrites the data area to which the vector points.

Write data from the vector v into the locations identified by this vector.

vec_t& vec_t::copy_from	(	const cvec_t &	v,
		size_t	offset,
		size_t	limit,
		size_t	myoffset = 0
	)

Overwrites the data area to which the vector points.

Write data from the vector v, starting at the given offset from the start of vector v, into the locations identified by this vector.

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

• src/common/vec_t.h

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