more TDB

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

@@ -14,21 +14,6 @@
  */
 #include "tdbInt.h"
 
-typedef TD_DLIST(SPage) SPgList;
-
-struct SPgCache {
-  SRWLatch mutex;
-  pgsize_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/tdbEnv.c

@@ -18,4 +18,5 @@
 struct STDbEnv {
   TDB *    dbList;      // TDB list
   SPgFile *pgFileList;  // SPgFile list
+  SPgCache pgc;         // page cache
 };

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

@@ -44,6 +44,21 @@ struct SPage {
   uint8_t *   pData;     // real data
 };
 
+typedef TD_DLIST(SPage) SPgList;
+struct SPgCache {
+  TENV *   pEnv; // TENV containing this page cache
+  SRWLatch mutex;
+  pgsize_t pgsize;
+  int32_t  npage;
+  SPage *  pages;
+  SPgList  freeList;
+  SPgList  lru;
+  struct {
+    int32_t  nbucket;
+    SPgList *buckets;
+  } pght;  // page hash table
+};
+
 #ifdef __cplusplus
 }
 #endif

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

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TDB_ENV_H_
+#define _TDB_ENV_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TDB_ENV_H_*/

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

@@ -79,6 +79,7 @@ typedef int32_t pgsize_t;
 #include "btree.h"
 #include "pgcache.h"
 #include "pgfile.h"
+#include "tdbEnv.h"
 
 // tdb util
 int tdbGnrtFileID(const char *fname, uint8_t *fileid);