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more TDB

This commit is contained in:
Hongze Cheng 2022-01-21 05:20:18 +00:00
parent a0d7e2a155
commit 7ef98d1af9
1 changed files with 26 additions and 0 deletions
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26
source/libs/tdb/src/db/tdb_mpool.c
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@ -19,6 +19,7 @@ static int tdbGnrtFileID(const char *fname, uint8_t *fileid);
static void tdbMPoolRegFile(TDB_MPOOL *mp, TDB_MPFILE *mpf); static void tdbMPoolRegFile(TDB_MPOOL *mp, TDB_MPFILE *mpf);
static void tdbMPoolUnregFile(TDB_MPOOL *mp, TDB_MPFILE *mpf); static void tdbMPoolUnregFile(TDB_MPOOL *mp, TDB_MPFILE *mpf);
static TDB_MPFILE *tdbMPoolGetFile(TDB_MPOOL *mp, uint8_t *fileid); static TDB_MPFILE *tdbMPoolGetFile(TDB_MPOOL *mp, uint8_t *fileid);
static int tdbMPoolFileReadPage(TDB_MPFILE *mpf, pgno_t pgno, void *p);
int tdbMPoolOpen(TDB_MPOOL **mpp, uint64_t cachesize, pgsize_t pgsize) { int tdbMPoolOpen(TDB_MPOOL **mpp, uint64_t cachesize, pgsize_t pgsize) {
TDB_MPOOL *mp = NULL; TDB_MPOOL *mp = NULL;
@ -196,6 +197,14 @@ int tdbMPoolFileGet(TDB_MPFILE *mpf, pgno_t pgno, void *addr) {
// load page from the disk if a container page is available // load page from the disk if a container page is available
// TODO: load the page from the disk // TODO: load the page from the disk
if (tdbMPoolFileReadPage(mpf, pgno, pagep->data) < 0) {
return -1;
}
memcpy(pagep->pgid.fileid, mpf->fileid, TDB_FILE_ID_LEN);
pagep->pgid.pgno = pgno;
pagep->dirty = 0;
pagep->pinRef = 1;
// add current page to page table // add current page to page table
TD_DLIST_APPEND_WITH_FIELD(pglist, pagep, hash); TD_DLIST_APPEND_WITH_FIELD(pglist, pagep, hash);
@ -292,4 +301,21 @@ static void tdbMPoolUnregFile(TDB_MPOOL *mp, TDB_MPFILE *mpf) {
taosWUnLockLatch(&(bktp->latch)); taosWUnLockLatch(&(bktp->latch));
ASSERT(tmpf == mpf); ASSERT(tmpf == mpf);
}
static int tdbMPoolFileReadPage(TDB_MPFILE *mpf, pgno_t pgno, void *p) {
pgsize_t pgsize;
TDB_MPOOL *mp;
off_t offset;
size_t rsize;
mp = mpf->mp;
pgsize = mp->pgsize;
offset = pgno * pgsize;
// TODO: use loop to read all data
rsize = pread(mpf->fd, p, pgsize, offset);
// TODO: error handle
return 0;
} }