ndb

  impl support for querying resource usage in ndb api
  to help track down mem leaks


ndb/include/ndbapi/Ndb.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/include/ndbapi/NdbBlob.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/include/ndbapi/NdbConnection.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/include/ndbapi/NdbIndexOperation.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/include/ndbapi/NdbIndexScanOperation.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/include/ndbapi/NdbOperation.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/include/ndbapi/NdbRecAttr.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/NdbApiSignal.cpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/NdbApiSignal.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/NdbBlob.cpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/NdbImpl.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/NdbRecAttr.cpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/NdbUtil.cpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/NdbUtil.hpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/Ndbif.cpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/Ndbinit.cpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/src/ndbapi/Ndblist.cpp:
  Impl. reporting of free list usage
  Put free list into handler class
ndb/tools/restore/Restore.cpp:
  Impl. reporting of free list usage
  Put free list into handler class

ndb/include/ndbapi/Ndb.hpp

@@ -882,10 +882,10 @@ class BaseString;
 class NdbEventOperation;
 class NdbBlob;
 class NdbReceiver;
+template <class T> struct Ndb_free_list_t;
 
 typedef void (* NdbEventCallback)(NdbEventOperation*, Ndb*, void*);
 
-
 #if defined NDB_OSE
 /**
  * Default time to wait for response after request has been sent to 
@@ -1386,8 +1386,20 @@ public:
    */
   NdbConnection* hupp( NdbConnection* );
   Uint32 getReference() const { return theMyRef;}
+
+  struct Free_list_usage
+  {
+    const char * m_name;
+    Uint32 m_created;
+    Uint32 m_free;
+    Uint32 m_sizeof;
+  };
+
+  Free_list_usage * get_free_list_usage(Free_list_usage*);
 #endif
 
+  
+
 /*****************************************************************************
  *	These are service routines used by the other classes in the NDBAPI.
  ****************************************************************************/
@@ -1562,22 +1574,8 @@ private:
   class NdbDictionaryImpl* theDictionary;
   class NdbGlobalEventBufferHandle* theGlobalEventBufferHandle;
 
-  NdbConnection*	theConIdleList;	// First connection in idle list.
-
-  NdbOperation*		theOpIdleList;	// First operation in the idle list. 
-
-  NdbIndexScanOperation* theScanOpIdleList;	// First scan operation in the idle list. 
-  NdbIndexOperation*	theIndexOpIdleList;	// First index operation in the idle list. 
   NdbConnection*	theTransactionList;
   NdbConnection**       theConnectionArray;
-  NdbRecAttr*		theRecAttrIdleList;  
-  NdbApiSignal*		theSignalIdleList;   // First signal in idlelist.
-  NdbLabel*		theLabelList;	     // First label descriptor in list
-  NdbBranch*		theBranchList;	     // First branch descriptor in list
-  NdbSubroutine*	theSubroutineList;   // First subroutine descriptor in
-  NdbCall*		theCallList;	     // First call descriptor in list
-  NdbReceiver*      theScanList;
-  NdbBlob*              theNdbBlobIdleList;
 
   Uint32   theMyRef;        // My block reference  
   Uint32   theNode;         // The node number of our node

ndb/include/ndbapi/NdbBlob.hpp

@@ -262,7 +262,7 @@ private:
   // for keeping in lists
   NdbBlob* theNext;
   // initialization
-  NdbBlob();
+  NdbBlob(Ndb*);
   void init();
   void release();
   // classify operations
@@ -314,6 +314,10 @@ private:
   int getOperationType() const;
   friend class NdbOut& operator<<(NdbOut&, const NdbBlob&);
 #endif
+
+  void next(NdbBlob* obj) { theNext= obj;}
+  NdbBlob* next() { return theNext;}
+  friend struct Ndb_free_list_t<NdbBlob>;
 };
 
 #endif

ndb/include/ndbapi/NdbConnection.hpp

@@ -18,8 +18,9 @@
 #define NdbConnection_H
 
 #include <ndb_types.h>
-#include <NdbError.hpp>
-#include <NdbDictionary.hpp>
+#include "NdbError.hpp"
+#include "NdbDictionary.hpp"
+#include "Ndb.hpp"
 
 class NdbConnection;
 class NdbOperation;
@@ -465,10 +466,10 @@ private:
   /**************************************************************************
    *	These are the create and delete methods of this class.              *
    **************************************************************************/
-  
   NdbConnection(Ndb* aNdb); 
-  
   ~NdbConnection();
+  NdbConnection* next();			  // Returns the next pointer
+  void next(NdbConnection*);		  // Sets the next pointer
 
   void init();           // Initialize connection object for new transaction
 
@@ -487,8 +488,6 @@ private:
   int		getTC_ConnectPtr();		  // Gets TC Connect pointer
   void          setBuddyConPtr(Uint32);           // Sets Buddy Con Ptr
   Uint32        getBuddyConPtr();                 // Gets Buddy Con Ptr
-  NdbConnection* next();			  // Returns the next pointer
-  void		next(NdbConnection*);		  // Sets the next pointer
 
   enum ConStatusType { 
     NotConnected,
@@ -691,6 +690,7 @@ private:
   void define_scan_op(NdbIndexScanOperation*);
 
   friend class HugoOperations;
+  friend struct Ndb_free_list_t<NdbConnection>;
 };
 
 inline

ndb/include/ndbapi/NdbIndexOperation.hpp

@@ -200,6 +200,7 @@ private:
   Uint32 m_theIndexDefined[NDB_MAX_ATTRIBUTES_IN_INDEX][3];
   Uint32 m_theIndexLen;	  	 // Length of the index in words
   Uint32 m_theNoOfIndexDefined;  // The number of index attributes
+  friend struct Ndb_free_list_t<NdbIndexOperation>;
 };
 
 #endif

ndb/include/ndbapi/NdbIndexScanOperation.hpp

@@ -132,6 +132,8 @@ private:
   int compare(Uint32 key, Uint32 cols, const NdbReceiver*, const NdbReceiver*);
 
   Uint32 m_sort_columns;
+
+  friend struct Ndb_free_list_t<NdbIndexScanOperation>;
 };
 
 #endif

ndb/include/ndbapi/NdbOperation.hpp

@@ -22,6 +22,7 @@
 #include "NdbError.hpp"
 #include "NdbReceiver.hpp"
 #include "NdbDictionary.hpp"
+#include "Ndb.hpp"
 
 class Ndb;
 class NdbApiSignal;
@@ -723,8 +724,6 @@ protected:
 /******************************************************************************
  * These are the methods used to create and delete the NdbOperation objects.
  *****************************************************************************/
-  			NdbOperation(Ndb* aNdb);	
-  			virtual ~NdbOperation();
 
   bool                  needReply();
 /******************************************************************************
@@ -736,8 +735,9 @@ protected:
   int init(const class NdbTableImpl*, NdbConnection* aCon);
   void initInterpreter();
 
+  NdbOperation(Ndb* aNdb);	
+  virtual ~NdbOperation();
   void	next(NdbOperation*);		// Set next pointer		      
-
   NdbOperation*	    next();	        // Get next pointer		       
 
   enum OperationStatus{ 
@@ -925,6 +925,8 @@ protected:
    * IgnoreError on connection level.
    */
   Int8 m_abortOption;
+
+  friend struct Ndb_free_list_t<NdbOperation>;
 };
 
 #ifdef NDB_NO_DROPPED_SIGNAL

ndb/include/ndbapi/NdbRecAttr.hpp

@@ -17,7 +17,8 @@
 #ifndef NdbRecAttr_H
 #define NdbRecAttr_H
 
-#include <NdbDictionary.hpp>
+#include "NdbDictionary.hpp"
+#include "Ndb.hpp"
 
 class NdbOperation;
 
@@ -242,7 +243,6 @@ public:
    */
   ~NdbRecAttr();    
 private:
-  NdbRecAttr();
 
   Uint32 attrId() const;        /* Get attribute id                     */
   bool setNULL();               /* Set NULL indicator                   */
@@ -251,6 +251,7 @@ private:
   void release();               /* Release memory if allocated          */
   void init();                  /* Initialise object when allocated     */
 
+  NdbRecAttr(Ndb*);
   void next(NdbRecAttr* aRecAttr);
   NdbRecAttr* next() const;
 
@@ -273,6 +274,8 @@ private:
   Uint32 theAttrSize;
   Uint32 theArraySize;
   const NdbDictionary::Column* m_column;
+
+  friend struct Ndb_free_list_t<NdbRecAttr>;
 };
 
 inline

ndb/src/ndbapi/NdbApiSignal.cpp

@@ -62,6 +62,25 @@ NdbApiSignal::NdbApiSignal(BlockReference ref)
   theNextSignal = 0;
 }
 
+NdbApiSignal::NdbApiSignal(Ndb* ndb)
+{
+  BlockReference ref = ndb->theMyRef;
+  theVerId_signalNumber   = 0;    // 4 bit ver id - 16 bit gsn
+  theReceiversBlockNumber = 0;  // Only 16 bit blocknum  
+  theSendersBlockRef      = refToBlock(ref);
+  theLength               = 0;
+  theSendersSignalId      = 0;
+  theSignalId             = 0;
+  theTrace                = 0;
+  m_noOfSections          = 0;
+  m_fragmentInfo          = 0;
+  for (int i = 0; i < 25; i++)
+    theData[i] = 0x13579753;
+  
+  setDataPtr(&theData[0]);
+  theNextSignal = 0;
+}
+
 /**
  * Copy constructor
  */

ndb/src/ndbapi/NdbApiSignal.hpp

@@ -46,7 +46,8 @@
 class NdbApiSignal : public SignalHeader
  {
 public:  
-  			NdbApiSignal(BlockReference myRef);
+  			NdbApiSignal(Ndb* ndb);
+  			NdbApiSignal(BlockReference ref);
   			NdbApiSignal(const NdbApiSignal &);
                         NdbApiSignal(const SignalHeader &header)
 			  : SignalHeader(header), theNextSignal(0), theRealData(0) {};

ndb/src/ndbapi/NdbBlob.cpp

@@ -137,7 +137,7 @@ NdbBlob::getBlobTable(NdbTableImpl& bt, const NdbTableImpl* t, const NdbColumnIm
 
 // initialization
 
-NdbBlob::NdbBlob()
+NdbBlob::NdbBlob(Ndb*)
 {
   init();
 }

ndb/src/ndbapi/NdbImpl.hpp

@@ -32,6 +32,21 @@
 #include "NdbDictionaryImpl.hpp"
 #include "ObjectMap.hpp"
 
+template <class T>
+struct Ndb_free_list_t 
+{
+  Ndb_free_list_t();
+  ~Ndb_free_list_t();
+  
+  void fill(Ndb*, Uint32 cnt);
+  T* seize(Ndb*);
+  void release(T*);
+  void clear();
+  Uint32 get_sizeof() const { return sizeof(T); }
+  T * m_free_list;
+  Uint32 m_alloc_cnt, m_free_cnt;
+};
+
 /**
  * Private parts of the Ndb object (corresponding to Ndb.hpp in public API)
  */
@@ -59,6 +74,23 @@ public:
   NdbWaiter             theWaiter;
 
   int m_optimized_node_selection;
+
+  /**
+   * NOTE free lists must be _after_ theNdbObjectIdMap take
+   *   assure that destructors are run in correct order
+   */
+  Ndb_free_list_t<NdbConnection> theConIdleList; 
+  Ndb_free_list_t<NdbOperation>  theOpIdleList;  
+  Ndb_free_list_t<NdbIndexScanOperation> theScanOpIdleList;
+  Ndb_free_list_t<NdbIndexOperation> theIndexOpIdleList;
+  Ndb_free_list_t<NdbRecAttr> theRecAttrIdleList;  
+  Ndb_free_list_t<NdbApiSignal> theSignalIdleList;
+  Ndb_free_list_t<NdbLabel> theLabelList;
+  Ndb_free_list_t<NdbBranch> theBranchList;
+  Ndb_free_list_t<NdbSubroutine> theSubroutineList;
+  Ndb_free_list_t<NdbCall> theCallList;
+  Ndb_free_list_t<NdbBlob> theNdbBlobIdleList;
+  Ndb_free_list_t<NdbReceiver> theScanList;
 };
 
 #ifdef VM_TRACE
@@ -133,4 +165,91 @@ enum LockMode {
   Delete 
 };
 
+template<class T>
+inline
+Ndb_free_list_t<T>::Ndb_free_list_t()
+{
+  m_free_list= 0; 
+  m_alloc_cnt= m_free_cnt= 0; 
+}
+
+template<class T>
+inline
+Ndb_free_list_t<T>::~Ndb_free_list_t()
+{
+  clear();
+}
+    
+template<class T>
+inline
+void
+Ndb_free_list_t<T>::fill(Ndb* ndb, Uint32 cnt)
+{
+  if (m_free_list == 0)
+  {
+    m_free_cnt++;
+    m_alloc_cnt++;
+    m_free_list = new T(ndb);
+  }
+  while(m_alloc_cnt < cnt)
+  {
+    T* obj= new T(ndb);
+    if(obj == 0)
+      return;
+    
+    obj->next(m_free_list);
+    m_free_cnt++;
+    m_alloc_cnt++;
+    m_free_list = obj;
+  }
+}
+
+template<class T>
+inline
+T*
+Ndb_free_list_t<T>::seize(Ndb* ndb)
+{
+  T* tmp = m_free_list;
+  if (tmp)
+  {
+    m_free_list = (T*)tmp->next();
+    tmp->next(NULL);
+    m_free_cnt--;
+    return tmp;
+  }
+  
+  if((tmp = new T(ndb)))
+  {
+    m_alloc_cnt++;
+  }
+  
+  return tmp;
+}
+
+template<class T>
+inline
+void
+Ndb_free_list_t<T>::release(T* obj)
+{
+  obj->next(m_free_list);
+  m_free_list = obj;
+  m_free_cnt++;
+}
+
+
+template<class T>
+inline
+void
+Ndb_free_list_t<T>::clear()
+{
+  T* obj = m_free_list;
+  while(obj)
+  {
+    T* curr = obj;
+    obj = (T*)obj->next();
+    delete curr;
+    m_alloc_cnt--;
+  }
+}
+
 #endif

ndb/src/ndbapi/NdbRecAttr.cpp

@@ -33,7 +33,7 @@ Adjust:  971206  UABRONM First version
 #include "NdbDictionaryImpl.hpp"
 #include <NdbTCP.h>
 
-NdbRecAttr::NdbRecAttr()
+NdbRecAttr::NdbRecAttr(Ndb*)
 {
   init();
 }
@@ -109,7 +109,7 @@ NdbRecAttr::copyout()
 
 NdbRecAttr *
 NdbRecAttr::clone() const {
-  NdbRecAttr * ret = new NdbRecAttr();
+  NdbRecAttr * ret = new NdbRecAttr(0);
 
   ret->theAttrId = theAttrId;
   ret->theNULLind = theNULLind;

ndb/src/ndbapi/NdbUtil.cpp

@@ -30,8 +30,7 @@ Adjust:		991029  UABRONM   First version.
 
 #include "NdbUtil.hpp"
 
-NdbLabel::NdbLabel() :
-  theNext(NULL)
+NdbLabel::NdbLabel(Ndb*)
 {
 }
 
@@ -39,8 +38,7 @@ NdbLabel::~NdbLabel()
 {
 }
 
-NdbSubroutine::NdbSubroutine() :
-  theNext(NULL)
+NdbSubroutine::NdbSubroutine(Ndb*)
 {
 }
 
@@ -48,9 +46,8 @@ NdbSubroutine::~NdbSubroutine()
 {
 }
 
-NdbBranch::NdbBranch() :
-  theSignal(NULL),
-  theNext(NULL)
+NdbBranch::NdbBranch(Ndb*) :
+  theSignal(NULL)
 {
 }
 
@@ -58,9 +55,8 @@ NdbBranch::~NdbBranch()
 {
 }
 
-NdbCall::NdbCall() :
-  theSignal(NULL),
-  theNext(NULL)
+NdbCall::NdbCall(Ndb*) :
+  theSignal(NULL)
 {
 }
 

ndb/src/ndbapi/NdbUtil.hpp

@@ -34,41 +34,49 @@ Comment:
 class NdbApiSignal;
 class NdbOperation;
 
-class NdbLabel
+template<class T>
+struct Free_list_element 
+{
+  Free_list_element() { theNext = 0;}
+  void next(T* obj) { theNext = obj;}
+  T* next() { return theNext;}
+
+  T* theNext;
+};
+
+class NdbLabel : public Free_list_element<NdbLabel>
 {
 friend class NdbOperation;
 friend class Ndb;
-
-private:
-  NdbLabel();
+public:
+  NdbLabel(Ndb*);
   ~NdbLabel();
 
-  NdbLabel* theNext;
+private:
   Uint32   theSubroutine[16];
   Uint32   theLabelAddress[16];
   Uint32   theLabelNo[16];
 };
 
-class NdbSubroutine
+class NdbSubroutine : public Free_list_element<NdbSubroutine>
 {
 friend class NdbOperation;
 friend class Ndb;
 
-private:
-  NdbSubroutine();
+public:
+  NdbSubroutine(Ndb*);
   ~NdbSubroutine();
 
-  NdbSubroutine* theNext;
   Uint32   theSubroutineAddress[16];
 };
 
-class NdbBranch
+class NdbBranch : public Free_list_element<NdbBranch>
 {
 friend class NdbOperation;
 friend class Ndb;
 
-private:
-  NdbBranch();
+public:
+  NdbBranch(Ndb*);
   ~NdbBranch();
 
   NdbApiSignal* theSignal;
@@ -76,22 +84,20 @@ private:
   Uint32       theBranchAddress;
   Uint32	theBranchLabel;
   Uint32	theSubroutine;
-  NdbBranch*	theNext;
 };
 
-class NdbCall
+class NdbCall : public Free_list_element<NdbCall>
 {
 friend class NdbOperation;
 friend class Ndb;
 
-private:
-  NdbCall();
+public:
+  NdbCall(Ndb*);
   ~NdbCall();
 
   NdbApiSignal* theSignal;
   Uint32       theSignalAddress;
   Uint32	theSubroutine;
-  NdbCall*	theNext;
 };
 
 #endif

ndb/src/ndbapi/Ndbif.cpp

@@ -143,15 +143,6 @@ Ndb::init(int aMaxNoOfTransactions)
 error_handler:
   ndbout << "error_handler" << endl;
   releaseTransactionArrays();
-  while ( theConIdleList != NULL )
-    freeNdbCon();
-  while ( theSignalIdleList != NULL )
-    freeSignal();
-  while (theRecAttrIdleList != NULL)
-    freeRecAttr(); 
-  while (theOpIdleList != NULL)
-    freeOperation();
-  
   delete theDictionary;
   TransporterFacade::instance()->close(theNdbBlockNumber, 0);
   DBUG_RETURN(-1);

ndb/src/ndbapi/Ndbinit.cpp

@@ -99,20 +99,8 @@ void Ndb::setup(Ndb_cluster_connection *ndb_cluster_connection,
   theMaxNoOfTransactions= 0;
   theMinNoOfEventsToWakeUp= 0;
   prefixEnd= NULL;
-  theConIdleList= NULL;
-  theOpIdleList= NULL;
-  theScanOpIdleList= NULL;
-  theIndexOpIdleList= NULL;
   theTransactionList= NULL;
   theConnectionArray= NULL;
-  theRecAttrIdleList= NULL;
-  theSignalIdleList= NULL;
-  theLabelList= NULL;
-  theBranchList= NULL;
-  theSubroutineList= NULL;
-  theCallList= NULL;
-  theScanList= NULL;
-  theNdbBlobIdleList= NULL;
   the_last_check_time= 0;
   theFirstTransId= 0;
   theRestartGCI= 0;
@@ -204,33 +192,6 @@ Ndb::~Ndb()
     TransporterFacade::instance()->close(theNdbBlockNumber, theFirstTransId);
   }
   
-//  if (theSchemaConToNdbList != NULL)
-//    closeSchemaTransaction(theSchemaConToNdbList);
-  while ( theConIdleList != NULL )
-    freeNdbCon();
-  while (theOpIdleList != NULL)
-    freeOperation();
-  while (theScanOpIdleList != NULL)
-    freeScanOperation();
-  while (theIndexOpIdleList != NULL)
-    freeIndexOperation();
-  while (theLabelList != NULL)
-    freeNdbLabel();
-  while (theBranchList != NULL)
-    freeNdbBranch();
-   while (theSubroutineList != NULL)
-    freeNdbSubroutine();
-   while (theCallList != NULL)
-    freeNdbCall();
-  while (theScanList != NULL)
-    freeNdbScanRec();
-  while (theNdbBlobIdleList != NULL)
-    freeNdbBlob();
-  while (theRecAttrIdleList != NULL)
-    freeRecAttr(); 
-  while ( theSignalIdleList != NULL )
-    freeSignal();
-  
   releaseTransactionArrays();
 
   delete []theConnectionArray;

ndb/tools/restore/Restore.cpp

@@ -869,7 +869,7 @@ operator<<(NdbOut& ndbout, const AttributeS& attr){
     return ndbout;
   }
   
-  NdbRecAttr tmprec;
+  NdbRecAttr tmprec(0);
   tmprec.setup(desc.m_column, (char *)data.void_value);
   ndbout << tmprec;