mongo::AlignedBuilder Class Reference

a page-aligned BufBuilder. More...

#include <aligned_builder.h>

Detailed Description

a page-aligned BufBuilder.

Classes
struct	AllocationInfo

Public Member Functions
	AlignedBuilder (unsigned init_size)
	~AlignedBuilder ()
void	reset (unsigned sz)
	reset with a hint as to the upcoming needed size specified More...
void	reset ()
	reset for a re-use. More...
const char *	buf () const
	note this may be deallocated (realloced) if you keep writing or reset(). More...
size_t	skip (unsigned n)
	leave room for some stuff later More...
char *	atOfs (unsigned ofs)
	if buffer grows pointer no longer valid More...
char *	cur ()
	if buffer grows pointer no longer valid More...
void	appendChar (char j)
void	appendNum (char j)
void	appendNum (short j)
void	appendNum (int j)
void	appendNum (unsigned j)
void	appendNum (bool j)
void	appendNum (double j)
void	appendNum (long long j)
void	appendNum (unsigned long long j)
void	appendBuf (const void *src, size_t len)
template<class T >
void	appendStruct (const T &s)
void	appendStr (StringData str, bool includeEOO=true)
unsigned	len () const

Private Member Functions
char *	grow (unsigned by)
	returns the pre-grow write position More...
void	growReallocate (unsigned oldLenInUse)
void	kill ()
void	mallocSelfAligned (unsigned sz)
void	_malloc (unsigned sz)
void	_realloc (unsigned newSize, unsigned oldLenInUse)
void	_free (void *)

Private Attributes
struct mongo::AlignedBuilder::AllocationInfo	_p
unsigned	_len

Static Private Attributes
static const unsigned	Alignment = 8192

Constructor & Destructor Documentation

AlignedBuilder()

mongo::AlignedBuilder::AlignedBuilder

(

unsigned

init_size

)

~AlignedBuilder()

mongo::AlignedBuilder::~AlignedBuilder ( )

inline

Member Function Documentation

_free()

void mongo::AlignedBuilder::_free ( void *  p )

private

_malloc()

void mongo::AlignedBuilder::_malloc ( unsigned  sz )

private

_realloc()

void mongo::AlignedBuilder::_realloc ( unsigned  newSize, unsigned  oldLenInUse  )

private

appendBuf()

void mongo::AlignedBuilder::appendBuf ( const void *  src, size_t  len  )

inline

appendChar()

void mongo::AlignedBuilder::appendChar ( char  j )

inline

appendNum() [1/8]

void mongo::AlignedBuilder::appendNum ( char  j )

inline

appendNum() [2/8]

void mongo::AlignedBuilder::appendNum ( short  j )

inline

appendNum() [3/8]

void mongo::AlignedBuilder::appendNum ( int  j )

inline

appendNum() [4/8]

void mongo::AlignedBuilder::appendNum ( unsigned  j )

inline

appendNum() [5/8]

void mongo::AlignedBuilder::appendNum ( bool  j )

inline

appendNum() [6/8]

void mongo::AlignedBuilder::appendNum ( double  j )

inline

appendNum() [7/8]

void mongo::AlignedBuilder::appendNum ( long long  j )

inline

appendNum() [8/8]

void mongo::AlignedBuilder::appendNum ( unsigned long long  j )

inline

appendStr()

void mongo::AlignedBuilder::appendStr ( StringData  str, bool  includeEOO = true  )

inline

appendStruct()

template<class T >

void mongo::AlignedBuilder::appendStruct ( const T &  s )

inline

atOfs()

char* mongo::AlignedBuilder::atOfs ( unsigned  ofs )

inline

if buffer grows pointer no longer valid

buf()

const char* mongo::AlignedBuilder::buf ( ) const

inline

note this may be deallocated (realloced) if you keep writing or reset().

cur()

char* mongo::AlignedBuilder::cur ( )

inline

if buffer grows pointer no longer valid

grow()

char* mongo::AlignedBuilder::grow ( unsigned  by )

inlineprivate

returns the pre-grow write position

growReallocate()

void NOINLINE_DECL mongo::AlignedBuilder::growReallocate ( unsigned  oldLenInUse )

private

kill()

void mongo::AlignedBuilder::kill ( )

private

len()

unsigned mongo::AlignedBuilder::len ( ) const

inline

Returns

the in-use length

mallocSelfAligned()

void mongo::AlignedBuilder::mallocSelfAligned ( unsigned  sz )

private

reset() [1/2]

void mongo::AlignedBuilder::reset

(

unsigned

sz

)

reset with a hint as to the upcoming needed size specified

reset() [2/2]

void mongo::AlignedBuilder::reset

(

)

reset for a re-use.

shrinks if > 128MB

skip()

size_t mongo::AlignedBuilder::skip ( unsigned  n )

inline

leave room for some stuff later

Returns

offset in the buffer that was our current position

Member Data Documentation

_len

unsigned mongo::AlignedBuilder::_len

private

_p

struct mongo::AlignedBuilder::AllocationInfo mongo::AlignedBuilder::_p

private

Alignment

const unsigned mongo::AlignedBuilder::Alignment = 8192

staticprivate

---

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

• /home/louis/git/mongodbsource.github.io/src/src/mongo/db/storage/mmap_v1/aligned_builder.h
• /home/louis/git/mongodbsource.github.io/src/src/mongo/db/storage/mmap_v1/aligned_builder.cpp