Experimental code to measure memory consumed by database schemas and prepared statements.

FossilOrigin-Name: 9aa30342f4de4eff630520ea8e07ad253d3f0877

src/sqliteInt.h

@@ -860,6 +860,8 @@ struct sqlite3 {
   int nStatement;               /* Number of nested statement-transactions  */
   u8 isTransactionSavepoint;    /* True if the outermost savepoint is a TS */
   i64 nDeferredCons;            /* Net deferred constraints this transaction. */
+  int *pnBytesFreed;            /* If not NULL, increment this in DbFree() */
+  SubProgram *pSubProgram;      /* List of sub-programs already visited*/
 
 #ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
   /* The following variables are all protected by the STATIC_MASTER 
@@ -2908,7 +2910,7 @@ int sqlite3InvokeBusyHandler(BusyHandler*);
 int sqlite3FindDb(sqlite3*, Token*);
 int sqlite3FindDbName(sqlite3 *, const char *);
 int sqlite3AnalysisLoad(sqlite3*,int iDB);
-void sqlite3DeleteIndexSamples(Index*);
+void sqlite3DeleteIndexSamples(sqlite3*,Index*);
 void sqlite3DefaultRowEst(Index*);
 void sqlite3RegisterLikeFunctions(sqlite3*, int);
 int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);