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more TDB

This commit is contained in:
Hongze Cheng 2022-03-14 07:52:34 +00:00
parent 1cee13b0e7
commit 3bda636ba0
2 changed files with 34 additions and 36 deletions
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67
source/libs/tdb/src/db/tdbBtree.c
View File

@ -343,40 +343,6 @@ static int tdbBtreeOpenImpl(SBTree *pBt) {
return 0;
}
static int tdbBtreeZeroPage(SPage *pPage, void *arg) {
u16 flags;
SBTree *pBt;
flags = ((SBtreeZeroPageArg *)arg)->flags;
pBt = ((SBtreeZeroPageArg *)arg)->pBt;
pPage->pPageHdr = pPage->pData;
pPage->pCellIdx = (u8 *)(&(pPage->pPageHdr[1]));
// Init the page header
TDB_PAGE_FLAGS_SET(pPage, flags);
TDB_PAGE_NCELLS_SET(pPage, 0);
TDB_PAGE_CCELLS_SET(pPage, pBt->pageSize);
TDB_PAGE_FCELL_SET(pPage, 0);
TDB_PAGE_NFREE_SET(pPage, 0);
TDB_BTREE_ASSERT_FLAG(flags);
if (TDB_BTREE_PAGE_IS_LEAF(flags)) {
pPage->kLen = pBt->keyLen;
pPage->vLen = pBt->valLen;
pPage->maxLocal = pBt->maxLeaf;
pPage->minLocal = pBt->minLeaf;
} else {
pPage->kLen = pBt->keyLen;
pPage->vLen = sizeof(SPgno);
pPage->maxLocal = pBt->maxLocal;
pPage->minLocal = pBt->minLocal;
}
return 0;
}
static int tdbBtreeInitPage(SPage *pPage, void *arg) {
SBTree *pBt;
u16 flags;
@ -384,8 +350,17 @@ static int tdbBtreeInitPage(SPage *pPage, void *arg) {
pBt = (SBTree *)arg;
flags = TDB_PAGE_FLAGS(pPage);
if (TDB_BTREE_PAGE_IS_LEAF(flags)) {
pPage->szAmHdr = 0;
} else {
pPage->szAmHdr = sizeof(SBtPageHdr);
}
pPage->pPageHdr = pPage->pData;
pPage->pCellIdx = pPage->pPageHdr + pPage->szPageHdr;
pPage->pAmHdr = pPage->pPageHdr + pPage->szPageHdr;
pPage->pCellIdx = pPage->pAmHdr + pPage->szAmHdr;
pPage->pFreeStart = pPage->pCellIdx + pPage->szOffset * TDB_PAGE_NCELLS(pPage);
pPage->pFreeEnd = pPage->pData + TDB_PAGE_CCELLS(pPage);
pPage->pPageFtr = (SPageFtr *)(pPage->pData + pPage->pageSize - sizeof(SPageFtr));
TDB_BTREE_ASSERT_FLAG(flags);
@ -405,6 +380,28 @@ static int tdbBtreeInitPage(SPage *pPage, void *arg) {
return 0;
}
static int tdbBtreeZeroPage(SPage *pPage, void *arg) {
u16 flags;
SBTree *pBt;
flags = ((SBtreeZeroPageArg *)arg)->flags;
pBt = ((SBtreeZeroPageArg *)arg)->pBt;
pPage->pPageHdr = pPage->pData;
// Init the page header
TDB_PAGE_FLAGS_SET(pPage, flags);
TDB_PAGE_NCELLS_SET(pPage, 0);
TDB_PAGE_CCELLS_SET(pPage, pBt->pageSize - sizeof(SPageFtr));
TDB_PAGE_FCELL_SET(pPage, 0);
TDB_PAGE_NFREE_SET(pPage, 0);
tdbBtreeInitPage(pPage, (void *)pBt);
return 0;
}
#ifndef TDB_BTREE_BALANCE
typedef struct {
SBTree *pBt;

3
source/libs/tdb/src/inc/tdbPage.h
View File

@ -46,13 +46,14 @@ typedef struct __attribute__((__packed__)) {
} SPageFtr;
struct SPage {
pthread_spinlock_t lock;
u8 *pData;
int pageSize;
u8 szOffset;
u8 szPageHdr;
u8 szFreeCell;
pthread_spinlock_t lock;
// Fields below used by pager and am
u8 szAmHdr;
u8 *pPageHdr;
u8 *pAmHdr;
u8 *pCellIdx;