[sql] Import SQLite 3.17.0.

third_party/sqlite/src/src/status.c

Index: third_party/sqlite/src/src/status.c
diff --git a/third_party/sqlite/src/src/status.c b/third_party/sqlite/src/src/status.c
index 69f92ff7c624ddb50e395d4459e8b6ca48c4310e..24dcad45724c39aa6fbbb6cc06197152d7dfd728 100644
--- a/third_party/sqlite/src/src/status.c
+++ b/third_party/sqlite/src/src/status.c
@@ -158,7 +158,7 @@ int sqlite3_status64(
   return SQLITE_OK;
 }
 int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag){
-  sqlite3_int64 iCur, iHwtr;
+  sqlite3_int64 iCur = 0, iHwtr = 0;
   int rc;
 #ifdef SQLITE_ENABLE_API_ARMOR
   if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT;
@@ -219,6 +219,7 @@ int sqlite3_db_status(
     ** by all pagers associated with the given database connection.  The
     ** highwater mark is meaningless and is returned as zero.
     */
+    case SQLITE_DBSTATUS_CACHE_USED_SHARED:
     case SQLITE_DBSTATUS_CACHE_USED: {
       int totalUsed = 0;
       int i;
@@ -227,7 +228,11 @@ int sqlite3_db_status(
         Btree *pBt = db->aDb[i].pBt;
         if( pBt ){
           Pager *pPager = sqlite3BtreePager(pBt);
-          totalUsed += sqlite3PagerMemUsed(pPager);
+          int nByte = sqlite3PagerMemUsed(pPager);
+          if( op==SQLITE_DBSTATUS_CACHE_USED_SHARED ){
+            nByte = nByte / sqlite3BtreeConnectionCount(pBt);
+          }
+          totalUsed += nByte;
         }
       }
       sqlite3BtreeLeaveAll(db);