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more TDB

This commit is contained in:
Hongze Cheng 2022-03-21 02:54:00 +00:00
parent 13b7ba3edb
commit cde7a7c6a1
3 changed files with 27 additions and 17 deletions
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14
source/libs/tdb/src/db/tdbBtree.c
View File

@ -381,19 +381,20 @@ static int tdbBtreeInitPage(SPage *pPage, void *arg) {
SBTree *pBt;
u16 flags;
u8 isLeaf;
u8 szAmHdr;
pBt = (SBTree *)arg;
flags = TDB_PAGE_FLAGS(pPage);
isLeaf = TDB_BTREE_PAGE_IS_LEAF(flags);
if (isLeaf) {
pPage->szAmHdr = 0;
szAmHdr = 0;
} else {
pPage->szAmHdr = sizeof(SBtPageHdr);
szAmHdr = sizeof(SBtPageHdr);
}
pPage->xCellSize = NULL; // TODO
tdbPageInit(pPage);
tdbPageInit(pPage, szAmHdr);
TDB_BTREE_ASSERT_FLAG(flags);
@ -416,6 +417,7 @@ static int tdbBtreeZeroPage(SPage *pPage, void *arg) {
u16 flags;
SBTree *pBt;
u8 isLeaf;
u8 szAmHdr;
flags = ((SBtreeZeroPageArg *)arg)->flags;
pBt = ((SBtreeZeroPageArg *)arg)->pBt;
@ -425,13 +427,13 @@ static int tdbBtreeZeroPage(SPage *pPage, void *arg) {
TDB_PAGE_FLAGS_SET(pPage, flags);
// Set szAmHdr
if (isLeaf) {
pPage->szAmHdr = 0;
szAmHdr = 0;
} else {
pPage->szAmHdr = sizeof(SBtPageHdr);
szAmHdr = sizeof(SBtPageHdr);
}
pPage->xCellSize = NULL; // TODO
tdbPageZero(pPage);
tdbPageZero(pPage, szAmHdr);
if (isLeaf) {
pPage->kLen = pBt->keyLen;

6
source/libs/tdb/src/inc/tdbPage.h
View File

@ -61,7 +61,6 @@ struct SPage {
u8 *pData;
SPageMethods *pPageMethods;
// Fields below used by pager and am
u8 szAmHdr;
u8 *pAmHdr;
u8 *pPageHdr;
u8 *pCellIdx;
@ -111,8 +110,8 @@ struct SPage {
int tdbPageCreate(int pageSize, SPage **ppPage, void *(*xMalloc)(void *, size_t), void *arg);
int tdbPageDestroy(SPage *pPage, void (*xFree)(void *arg, void *ptr), void *arg);
void tdbPageZero(SPage *pPage);
void tdbPageInit(SPage *pPage);
void tdbPageZero(SPage *pPage, u8 szAmHdr);
void tdbPageInit(SPage *pPage, u8 szAmHdr);
int tdbPageInsertCell(SPage *pPage, int idx, SCell *pCell, int szCell);
int tdbPageDropCell(SPage *pPage, int idx);
@ -134,6 +133,7 @@ static inline SCell *tdbPageGetCell(SPage *pPage, int idx) {
}
lidx = idx - iOvfl;
ASSERT(lidx >= 0 && lidx < pPage->pPageMethods->getCellNum(pPage));
pCell = pPage->pData + pPage->pPageMethods->getCellOffset(pPage, lidx);
return pCell;

24
source/libs/tdb/src/page/tdbPage.c
View File

@ -32,8 +32,8 @@ extern SPageMethods pageLargeMethods;
#define TDB_PAGE_NFREE_SET(pPage, NFREE) (*(pPage)->pPageMethods->setFreeBytes)(pPage, NFREE)
#define TDB_PAGE_CELL_OFFSET_AT_SET(pPage, idx, OFFSET) (*(pPage)->pPageMethods->setCellOffset)(pPage, idx, OFFSET)
#define TDB_PAGE_CELL_AT(pPage, idx) ((pPage)->pData + TDB_PAGE_CELL_OFFSET_AT(pPage, idx))
#define TDB_PAGE_MAX_FREE_BLOCK(pPage) \
((pPage)->pageSize - (pPage)->szAmHdr - TDB_PAGE_HDR_SIZE(pPage) - sizeof(SPageFtr))
#define TDB_PAGE_MAX_FREE_BLOCK(pPage, szAmHdr) \
((pPage)->pageSize - (szAmHdr)-TDB_PAGE_HDR_SIZE(pPage) - sizeof(SPageFtr))
static int tdbPageAllocate(SPage *pPage, int size, SCell **ppCell);
static int tdbPageDefragment(SPage *pPage);
@ -79,17 +79,25 @@ int tdbPageDestroy(SPage *pPage, void (*xFree)(void *arg, void *ptr), void *arg)
return 0;
}
void tdbPageZero(SPage *pPage) {
void tdbPageZero(SPage *pPage, u8 szAmHdr) {
pPage->pAmHdr = pPage->pData;
pPage->pPageHdr = pPage->pAmHdr + szAmHdr;
TDB_PAGE_NCELLS_SET(pPage, 0);
TDB_PAGE_CCELLS_SET(pPage, pPage->pageSize - sizeof(SPageFtr));
TDB_PAGE_FCELL_SET(pPage, 0);
TDB_PAGE_NFREE_SET(pPage, TDB_PAGE_MAX_FREE_BLOCK(pPage));
tdbPageInit(pPage);
TDB_PAGE_NFREE_SET(pPage, TDB_PAGE_MAX_FREE_BLOCK(pPage, szAmHdr));
pPage->pCellIdx = pPage->pPageHdr + TDB_PAGE_HDR_SIZE(pPage);
pPage->pFreeStart = pPage->pCellIdx;
pPage->pFreeEnd = pPage->pData + TDB_PAGE_CCELLS(pPage);
pPage->pPageFtr = (SPageFtr *)(pPage->pData + pPage->pageSize - sizeof(SPageFtr));
pPage->nOverflow = 0;
ASSERT((u8 *)pPage->pPageFtr == pPage->pFreeEnd);
}
void tdbPageInit(SPage *pPage) {
void tdbPageInit(SPage *pPage, u8 szAmHdr) {
pPage->pAmHdr = pPage->pData;
pPage->pPageHdr = pPage->pAmHdr + pPage->szAmHdr;
pPage->pPageHdr = pPage->pAmHdr + szAmHdr;
pPage->pCellIdx = pPage->pPageHdr + TDB_PAGE_HDR_SIZE(pPage);
pPage->pFreeStart = pPage->pCellIdx + TDB_PAGE_OFFSET_SIZE(pPage) * TDB_PAGE_NCELLS(pPage);
pPage->pFreeEnd = pPage->pData + TDB_PAGE_CCELLS(pPage);
@ -107,7 +115,7 @@ int tdbPageInsertCell(SPage *pPage, int idx, SCell *pCell, int szCell) {
int lidx; // local idx
SCell *pNewCell;
ASSERT(szCell <= TDB_PAGE_MAX_FREE_BLOCK(pPage));
ASSERT(szCell <= TDB_PAGE_MAX_FREE_BLOCK(pPage, pPage->pPageHdr - pPage->pAmHdr));
nFree = TDB_PAGE_NFREE(pPage);
nCells = TDB_PAGE_NCELLS(pPage);