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more TDB

This commit is contained in:
Hongze Cheng 2022-03-04 09:53:26 +00:00
parent ec3f723d33
commit eb5b10d14d
1 changed files with 27 additions and 7 deletions
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34
source/libs/tdb/src/db/tdbPCache.c
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@ -86,8 +86,12 @@ SPage *tdbPCacheFetch(SPCache *pCache, const SPgid *pPgid, bool alcNewPage) {
}
void tdbPCacheRelease(SPage *pPage) {
pPage->nRef--;
if (pPage->nRef == 0) {
i32 nRef;
nRef = TDB_UNREF_PAGE(pPage);
ASSERT(nRef >= 0);
if (nRef == 0) {
if (1 /*TODO: page still clean*/) {
tdbPCacheUnpinPage(pPage);
} else {
@ -125,6 +129,7 @@ static SPage *tdbPCacheFetchImpl(SPCache *pCache, const SPgid *pPgid, bool alcNe
if (pPage) {
tdbPCachePinPage(pPage);
}
TDB_REF_PAGE(pPage);
return pPage;
}
@ -153,6 +158,7 @@ static SPage *tdbPCacheFetchImpl(SPCache *pCache, const SPgid *pPgid, bool alcNe
pPage->pLruNext = NULL;
pPage->pPager = NULL;
tdbPCacheAddPageToHash(pPage);
TDB_REF_PAGE(pPage);
}
return pPage;
@ -172,15 +178,28 @@ static void tdbPCachePinPage(SPage *pPage) {
}
static void tdbPCacheUnpinPage(SPage *pPage) {
// Add current page to the LRU list
SPCache *pCache;
i32 nRef;
pPage->pLruPrev = &(pCache->lru);
pPage->pLruNext = pCache->lru.pLruNext;
pCache->lru.pLruNext->pLruPrev = pPage;
pCache->lru.pLruNext = pPage;
pCache = pPage->pCache;
tdbPCacheLock(pCache);
nRef = TDB_PAGE_REF(pPage);
ASSERT(nRef >= 0);
if (nRef == 0) {
// Add the page to LRU list
ASSERT(pPage->pLruNext == NULL);
pPage->pLruPrev = &(pCache->lru);
pPage->pLruNext = pCache->lru.pLruNext;
pCache->lru.pLruNext->pLruPrev = pPage;
pCache->lru.pLruNext = pPage;
}
pCache->nRecyclable++;
tdbPCacheUnlock(pCache);
}
static void tdbPCacheRemovePageFromHash(SPage *pPage) {
@ -236,6 +255,7 @@ static int tdbPCacheOpenImpl(SPCache *pCache) {
pPage->isAnchor = 0;
pPage->isLocalPage = 1;
pPage->pCache = pCache;
TDB_INIT_PAGE_REF(pPage);
pPage->pHashNext = NULL;
pPage->pLruNext = NULL;
pPage->pLruPrev = NULL;