Referencia del Archivo src/sqlite/btree.c

#include "sqliteInt.h"
#include "pager.h"
#include "btree.h"
#include <assert.h>

Clases
struct	PageOne
struct	PageHdr
struct	CellHdr
struct	Cell
struct	FreeBlk
struct	OverflowPage
struct	FreelistInfo
struct	MemPage
union	MemPage::u_page_data
struct	Btree
struct	BtCursor
struct	IntegrityCk
'defines'
#define	SWAB16(B, X)   ((B)->needSwab? swab16((u16)X) : ((u16)X))
#define	SWAB32(B, X)   ((B)->needSwab? swab32(X) : (X))
#define	SWAB_ADD(B, X, A)   if((B)->needSwab){ X=swab32(swab32(X)+A); }else{ X += (A); }
#define	btree_native_byte_order   1
#define	ROUNDUP(X)   ((X+3) & ~3)
#define	MAGIC_SIZE   (sizeof(zMagicHeader))
#define	MAGIC   0xdae37528
#define	NKEY(b, h)   (SWAB16(b,h.nKey) + h.nKeyHi*65536)
#define	NDATA(b, h)   (SWAB16(b,h.nData) + h.nDataHi*65536)
#define	MIN_CELL_SIZE   (sizeof(CellHdr)+4)
#define	MX_CELL   ((SQLITE_USABLE_SIZE-sizeof(PageHdr))/MIN_CELL_SIZE)
#define	USABLE_SPACE   (SQLITE_USABLE_SIZE - sizeof(PageHdr))
#define	MX_LOCAL_PAYLOAD   ((USABLE_SPACE/4-(sizeof(CellHdr)+sizeof(Pgno)))&~3)
#define	OVERFLOW_SIZE   (SQLITE_USABLE_SIZE-sizeof(Pgno))
#define	EXTRA_SIZE   (sizeof(MemPage)-sizeof(union u_page_data))
#define	SKIP_NONE   0
#define	SKIP_NEXT   1
#define	SKIP_PREV   2
#define	SKIP_INVALID   3
#define	NN   1
#define	NB   (NN*2+1)
'typedefs'
typedef struct PageOne	PageOne
typedef struct MemPage	MemPage
typedef struct PageHdr	PageHdr
typedef struct Cell	Cell
typedef struct CellHdr	CellHdr
typedef struct FreeBlk	FreeBlk
typedef struct OverflowPage	OverflowPage
typedef struct FreelistInfo	FreelistInfo
typedef Btree	Bt
typedef struct IntegrityCk	IntegrityCk
Funciones
u16	swab16 (u16 x)
u32	swab32 (u32 x)
int	sqliteBtreeOpen (const char *zFilename, int omitJournal, int nCache, Btree **ppBtree)
char *	fileBtreeIntegrityCheck (Btree *pBt, int *aRoot, int nRoot)

---

Documentación de los 'defines'

#define btree_native_byte_order   1

#define EXTRA_SIZE   (sizeof(MemPage)-sizeof(union u_page_data))

#define MAGIC   0xdae37528

#define MAGIC_SIZE   (sizeof(zMagicHeader))

#define MIN_CELL_SIZE   (sizeof(CellHdr)+4)

#define MX_CELL   ((SQLITE_USABLE_SIZE-sizeof(PageHdr))/MIN_CELL_SIZE)

#define MX_LOCAL_PAYLOAD   ((USABLE_SPACE/4-(sizeof(CellHdr)+sizeof(Pgno)))&~3)

#define NB   (NN*2+1)

#define NDATA	(		b,
			h
	)		(SWAB16(b,h.nData) + h.nDataHi*65536)

#define NKEY	(		b,
			h
	)		(SWAB16(b,h.nKey) + h.nKeyHi*65536)

#define NN   1

#define OVERFLOW_SIZE   (SQLITE_USABLE_SIZE-sizeof(Pgno))

#define ROUNDUP

(

X

)

((X+3) & ~3)

#define SKIP_INVALID   3

#define SKIP_NEXT   1

#define SKIP_NONE   0

#define SKIP_PREV   2

#define SWAB16	(		B,
			X
	)		((B)->needSwab? swab16((u16)X) : ((u16)X))

#define SWAB32	(		B,
			X
	)		((B)->needSwab? swab32(X) : (X))

#define SWAB_ADD	(		B,
			X,
			A
	)		if((B)->needSwab){ X=swab32(swab32(X)+A); }else{ X += (A); }

#define USABLE_SPACE   (SQLITE_USABLE_SIZE - sizeof(PageHdr))

---

Documentación de los 'typedefs'

typedef Btree Bt

typedef struct Cell Cell

typedef struct CellHdr CellHdr

typedef struct FreeBlk FreeBlk

typedef struct FreelistInfo FreelistInfo

typedef struct IntegrityCk IntegrityCk

typedef struct MemPage MemPage

typedef struct OverflowPage OverflowPage

typedef struct PageHdr PageHdr

typedef struct PageOne PageOne

---

Documentación de las funciones

char* fileBtreeIntegrityCheck	(	Btree *	pBt,
		int *	aRoot,
		int	nRoot
	)

int sqliteBtreeOpen	(	const char *	zFilename,
		int	omitJournal,
		int	nCache,
		Btree **	ppBtree
	)

u16 swab16

(

u16

x

)

u32 swab32

(

u32

x

)