[t:3166], add flag for db->open to say you are creating a hot db

git-svn-id: file:///svn/toku/tokudb@27078 c7de825b-a66e-492c-adef-691d508d4ae1

buildheader/db.h_4_1

@@ -246,6 +246,7 @@ typedef enum {
 #define DB_PRELOCKED 0x00800000
 #define DB_PRELOCKED_WRITE 0x00400000
 #define DB_PRELOCKED_FILE_READ 0x00200000
+#define DB_IS_HOT_INDEX 0x00100000
 #define DB_DBT_APPMALLOC 1
 #define DB_DBT_DUPOK 64
 #define DB_DBT_MALLOC 4

buildheader/db.h_4_3

@@ -247,6 +247,7 @@ typedef enum {
 #define DB_PRELOCKED 0x00800000
 #define DB_PRELOCKED_WRITE 0x00400000
 #define DB_PRELOCKED_FILE_READ 0x00200000
+#define DB_IS_HOT_INDEX 0x00100000
 #define DB_DBT_APPMALLOC 1
 #define DB_DBT_DUPOK 64
 #define DB_DBT_MALLOC 4

buildheader/db.h_4_4

@@ -247,6 +247,7 @@ typedef enum {
 #define DB_PRELOCKED 0x00800000
 #define DB_PRELOCKED_WRITE 0x00400000
 #define DB_PRELOCKED_FILE_READ 0x00200000
+#define DB_IS_HOT_INDEX 0x00100000
 #define DB_DBT_APPMALLOC 1
 #define DB_DBT_DUPOK 64
 #define DB_DBT_MALLOC 4

buildheader/db.h_4_5

@@ -247,6 +247,7 @@ typedef enum {
 #define DB_PRELOCKED 0x00800000
 #define DB_PRELOCKED_WRITE 0x00400000
 #define DB_PRELOCKED_FILE_READ 0x00200000
+#define DB_IS_HOT_INDEX 0x00100000
 #define DB_DBT_APPMALLOC 1
 #define DB_DBT_DUPOK 128
 #define DB_DBT_MALLOC 4

buildheader/db.h_4_6

@@ -247,6 +247,7 @@ typedef enum {
 #define DB_PRELOCKED 0x00800000
 #define DB_PRELOCKED_WRITE 0x00400000
 #define DB_PRELOCKED_FILE_READ 0x00200000
+#define DB_IS_HOT_INDEX 0x00100000
 #define DB_DBT_APPMALLOC 1
 #define DB_DBT_DUPOK 2
 #define DB_DBT_MALLOC 8

buildheader/make_db_h.c

@@ -158,6 +158,7 @@ static void print_defines (void) {
     printf("#define DB_PRELOCKED 0x00800000\n"); // private tokudb
     printf("#define DB_PRELOCKED_WRITE 0x00400000\n"); // private tokudb
     printf("#define DB_PRELOCKED_FILE_READ 0x00200000\n"); // private tokudb
+    printf("#define DB_IS_HOT_INDEX 0x00100000\n"); // private tokudb
 
     {
         //dbt flags

buildheader/tdb.h

@@ -247,6 +247,7 @@ typedef enum {
 #define DB_PRELOCKED 0x00800000
 #define DB_PRELOCKED_WRITE 0x00400000
 #define DB_PRELOCKED_FILE_READ 0x00200000
+#define DB_IS_HOT_INDEX 0x00100000
 #define DB_DBT_APPMALLOC 1
 #define DB_DBT_DUPOK 2
 #define DB_DBT_MALLOC 8

include/db.h

@@ -247,6 +247,7 @@ typedef enum {
 #define DB_PRELOCKED 0x00800000
 #define DB_PRELOCKED_WRITE 0x00400000
 #define DB_PRELOCKED_FILE_READ 0x00200000
+#define DB_IS_HOT_INDEX 0x00100000
 #define DB_DBT_APPMALLOC 1
 #define DB_DBT_DUPOK 2
 #define DB_DBT_MALLOC 8