refact TDB

source/libs/tdb/src/db/tdbPgCache.c

@@ -14,6 +14,32 @@
  */
 #include "tdbInt.h"
 
+typedef TD_DLIST_NODE(SPage) SPgListNode;
+struct SPage {
+  pgid_t      pgid;      // page id
+  frame_id_t  frameid;   // frame id
+  SPgListNode freeNode;  // for SPgCache.freeList
+  SPgListNode pghtNode;  // for pght
+  SPgListNode lruNode;   // for LRU
+  uint8_t *   pData;     // real data
+};
+
+typedef TD_DLIST(SPage) SPgList;
+struct SPgCache {
+  TENV *   pEnv;  // TENV containing this page cache
+  SRWLatch mutex;
+  pgsz_t   pgsize;
+  int32_t  npage;
+  SPage *  pages;
+  SPgList  freeList;
+  SPgList  lru;
+  struct {
+    int32_t  nbucket;
+    SPgList *buckets;
+  } pght;  // page hash table
+};
+
+
 static void pgCachePinPage(SPage *pPage);
 static void pgCacheUnpinPage(SPage *pPage);
 

source/libs/tdb/src/db/tdbPgFile.c

@@ -86,7 +86,8 @@ SPage *pgFileFetch(SPgFile *pPgFile, pgno_t pgno) {
     if (1 /*Page is cached, no need to load from file*/) {
       return pPage;
     } else {
-      if (pgFileRead(pPgFile, pgno, pPage->pData) < 0) {
+      // TODO: handle error
+      if (pgFileRead(pPgFile, pgno, (void *)pPage) < 0) {
         // todoerr
       }
       return pPage;

source/libs/tdb/src/inc/tdbPgCache.h

@@ -32,31 +32,6 @@ int    pgCacheRelease(SPage *pPage);
 
 // SPage
 
-typedef TD_DLIST_NODE(SPage) SPgListNode;
-struct SPage {
-  pgid_t      pgid;      // page id
-  frame_id_t  frameid;   // frame id
-  SPgListNode freeNode;  // for SPgCache.freeList
-  SPgListNode pghtNode;  // for pght
-  SPgListNode lruNode;   // for LRU
-  uint8_t *   pData;     // real data
-};
-
-typedef TD_DLIST(SPage) SPgList;
-struct SPgCache {
-  TENV *   pEnv;  // TENV containing this page cache
-  SRWLatch mutex;
-  pgsz_t   pgsize;
-  int32_t  npage;
-  SPage *  pages;
-  SPgList  freeList;
-  SPgList  lru;
-  struct {
-    int32_t  nbucket;
-    SPgList *buckets;
-  } pght;  // page hash table
-};
-
 #ifdef __cplusplus
 }
 #endif