added connect thread to Ndb_cluster_connection +

some other small fixes


ndb/include/mgmcommon/ConfigRetriever.hpp:
  added options to do_connect to contol how connects failures should be treated
ndb/include/mgmcommon/NdbConfig.h:
  method to retrieve datadir path (to user for chdir)
ndb/include/ndbapi/ndb_cluster_connection.hpp:
  Added connect thread
ndb/src/common/mgmcommon/ConfigRetriever.cpp:
  added options to do_connect to contol how connects failures should be treated
ndb/src/common/mgmcommon/NdbConfig.c:
  method to retrieve datadir path (to user for chdir)
ndb/src/kernel/main.cpp:
  ndbd to do chdir
ndb/src/kernel/vm/WatchDog.cpp:
  added my_thread_init for debug
ndb/src/ndbapi/ClusterMgr.cpp:
  added my_thread_init for debug
ndb/src/ndbapi/TransporterFacade.cpp:
  removed call to atexit
ndb/src/ndbapi/ndb_cluster_connection.cpp:
  added connect thread

ndb/include/mgmcommon/ConfigRetriever.hpp

@@ -37,7 +37,7 @@ public:
    */
   int init();
 
-  int do_connect();
+  int do_connect(int exit_on_connect_failure= false);
   
   /**
    * Get configuration for current (nodeId given in local config file) node.

ndb/include/mgmcommon/NdbConfig.h

@@ -21,6 +21,7 @@
 extern "C" {
 #endif
 
+const char* NdbConfig_get_path(int *len);
 void NdbConfig_SetPath(const char *path);
 char* NdbConfig_NdbCfgName(int with_ndb_home);
 char* NdbConfig_ErrorFileName(int node_id);

ndb/include/ndbapi/ndb_cluster_connection.hpp

@@ -20,16 +20,26 @@
 
 class TransporterFacade;
 class ConfigRetriever;
+class NdbThread;
+
+extern "C" {
+  void* run_ndb_cluster_connection_connect_thread(void*);
+}
 
 class Ndb_cluster_connection {
 public:
   Ndb_cluster_connection(const char * connect_string = 0);
   ~Ndb_cluster_connection();
-  int connect();
+  int connect(int reconnect= 0);
+  int start_connect_thread(int (*connect_callback)(void)= 0);
 private:
+  friend void* run_ndb_cluster_connection_connect_thread(void*);
+  void connect_thread();
   char *m_connect_string;
   TransporterFacade *m_facade;
   ConfigRetriever *m_config_retriever;
+  NdbThread *m_connect_thread;
+  int (*m_connect_callback)(void);
 };
 
 #endif

ndb/src/common/mgmcommon/ConfigRetriever.cpp

@@ -78,7 +78,7 @@ ConfigRetriever::init() {
 }
 
 int
-ConfigRetriever::do_connect(){
+ConfigRetriever::do_connect(int exit_on_connect_failure){
 
   if(!m_handle)
     m_handle= ndb_mgm_create_handle();
@@ -102,6 +102,8 @@ ConfigRetriever::do_connect(){
 	if (ndb_mgm_connect(m_handle, tmp.c_str()) == 0) {
 	  return 0;
 	}
+	if (exit_on_connect_failure)
+	  return 1;
 	setError(CR_RETRY, ndb_mgm_get_latest_error_desc(m_handle));
       case MgmId_File:
 	break;

ndb/src/common/mgmcommon/NdbConfig.c

@@ -21,27 +21,34 @@
 
 static char *datadir_path= 0;
 
+const char *
+NdbConfig_get_path(int *_len)
+{
+  const char *path= NdbEnv_GetEnv("NDB_HOME", 0, 0);
+  int path_len= 0;
+  if (path)
+    path_len= strlen(path);
+  if (path_len == 0 && datadir_path) {
+    path= datadir_path;
+    path_len= strlen(path);
+  }
+  if (path_len == 0) {
+    path= ".";
+    path_len= strlen(path);
+  }
+  if (_len)
+    *_len= path_len;
+  return path;
+}
+
 static char* 
 NdbConfig_AllocHomePath(int _len)
 {
-  const char *path= NdbEnv_GetEnv("NDB_HOME", 0, 0);
-  int len= _len;
-  int path_len= 0;
-  char *buf;
-
-  if (path == 0)
-    path= datadir_path;
-
-  if (path)
-    path_len= strlen(path);
-
-  len+= path_len;
-  buf= NdbMem_Allocate(len);
-  if (path_len > 0)
+  int path_len;
+  const char *path= NdbConfig_get_path(&path_len);
+  int len= _len+path_len;
+  char *buf= NdbMem_Allocate(len);
   snprintf(buf, len, "%s%s", path, DIR_SEPARATOR);
-  else
-    buf[0]= 0;
-
   return buf;
 }
 

ndb/src/kernel/main.cpp

@@ -74,6 +74,8 @@ NDB_MAIN(ndb_kernel){
     theConfig->fetch_configuration();
   }
   
+  chdir(NdbConfig_get_path(0));
+
   if (theConfig->getDaemonMode()) {
     // Become a daemon
     char *lockfile= NdbConfig_PidFileName(globalData.ownId);

ndb/src/kernel/vm/WatchDog.cpp

@@ -15,6 +15,9 @@
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
 
 
+#include <ndb_global.h>
+#include <my_pthread.h>
+
 #include "WatchDog.hpp"
 #include "GlobalData.hpp"
 #include <NdbOut.hpp>
@@ -24,7 +27,9 @@
 extern "C" 
 void* 
 runWatchDog(void* w){
+  my_thread_init();
   ((WatchDog*)w)->run();
+  my_thread_end();
   NdbThread_Exit(0);
   return NULL;
 }

ndb/src/ndbapi/ClusterMgr.cpp

@@ -15,6 +15,7 @@
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
 
 #include <ndb_global.h>
+#include <my_pthread.h>
 #include <ndb_limits.h>
 #include <ndb_version.h>
 
@@ -64,7 +65,8 @@ ClusterMgr::ClusterMgr(TransporterFacade & _facade):
 {
   ndbSetOwnVersion();
   clusterMgrThreadMutex = NdbMutex_Create();
-  noOfConnectedNodes = 0;
+  noOfConnectedNodes= 0;
+  theClusterMgrThread= 0;
 }
 
 ClusterMgr::~ClusterMgr(){
@@ -137,20 +139,21 @@ ClusterMgr::startThread() {
 
 void
 ClusterMgr::doStop( ){
+  DBUG_ENTER("ClusterMgr::doStop");
   NdbMutex_Lock(clusterMgrThreadMutex);
-
   if(theStop){
     NdbMutex_Unlock(clusterMgrThreadMutex);
-    return;
+    DBUG_VOID_RETURN;
   }
-  
   void *status;
   theStop = 1;
-
+  if (theClusterMgrThread) {
     NdbThread_WaitFor(theClusterMgrThread, &status);  
     NdbThread_Destroy(&theClusterMgrThread);
-
+    theClusterMgrThread= 0;
+  }
   NdbMutex_Unlock(clusterMgrThreadMutex);
+  DBUG_VOID_RETURN;
 }
 
 void
@@ -524,6 +527,7 @@ ArbitMgr::doChoose(const Uint32* theData)
 void
 ArbitMgr::doStop(const Uint32* theData)
 {
+  DBUG_ENTER("ArbitMgr::doStop");
   ArbitSignal aSignal;
   NdbMutex_Lock(theThreadMutex);
   if (theThread != NULL) {
@@ -540,6 +544,7 @@ ArbitMgr::doStop(const Uint32* theData)
     theState = StateInit;
   }
   NdbMutex_Unlock(theThreadMutex);
+  DBUG_VOID_RETURN;
 }
 
 // private methods
@@ -548,7 +553,9 @@ extern "C"
 void*
 runArbitMgr_C(void* me)
 {
+  my_thread_init();
   ((ArbitMgr*) me)->threadMain();
+  my_thread_end();
   NdbThread_Exit(0); 
   return NULL;
 }

ndb/src/ndbapi/TransporterFacade.cpp

@@ -15,6 +15,7 @@
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
 
 #include <ndb_global.h>
+#include <my_pthread.h>
 #include <ndb_limits.h>
 #include "TransporterFacade.hpp"
 #include "ClusterMgr.hpp"
@@ -329,14 +330,6 @@ copy(Uint32 * & insertPtr,
   abort();
 }
 
-extern "C"
-void 
-atexit_stop_instance(){
-  DBUG_ENTER("atexit_stop_instance");
-  TransporterFacade::stop_instance();
-  DBUG_VOID_RETURN;
-}
-
 /**
  * Note that this function need no locking since its
  * only called from the constructor of Ndb (the NdbObject)
@@ -352,11 +345,6 @@ TransporterFacade::start_instance(int nodeId,
     return -1;
   }
   
-  /**
-   * Install atexit handler
-   */
-  atexit(atexit_stop_instance);
-
   /**
    * Install signal handler for SIGPIPE
    *
@@ -379,13 +367,7 @@ TransporterFacade::start_instance(int nodeId,
 void
 TransporterFacade::stop_instance(){
   DBUG_ENTER("TransporterFacade::stop_instance");
-  if(theFacadeInstance == NULL){
-    /**
-     * We are called from atexit function
-     */
-    DBUG_VOID_RETURN;
-  }
-
+  if(theFacadeInstance)
     theFacadeInstance->doStop();
   DBUG_VOID_RETURN;
 }
@@ -405,10 +387,16 @@ TransporterFacade::doStop(){
    */
   void *status;
   theStopReceive = 1;
+  if (theReceiveThread) {
     NdbThread_WaitFor(theReceiveThread, &status);
-  NdbThread_WaitFor(theSendThread, &status);
     NdbThread_Destroy(&theReceiveThread);
+    theReceiveThread= 0;
+  }
+  if (theSendThread) {
+    NdbThread_WaitFor(theSendThread, &status);
     NdbThread_Destroy(&theSendThread);
+    theSendThread= 0;
+  }
   DBUG_VOID_RETURN;
 }
 
@@ -416,7 +404,9 @@ extern "C"
 void* 
 runSendRequest_C(void * me)
 {
+  my_thread_init();
   ((TransporterFacade*) me)->threadMainSend();
+  my_thread_end();
   NdbThread_Exit(0);
   return me;
 }
@@ -459,7 +449,9 @@ extern "C"
 void* 
 runReceiveResponse_C(void * me)
 {
+  my_thread_init();
   ((TransporterFacade*) me)->threadMainReceive();
+  my_thread_end();
   NdbThread_Exit(0);
   return me;
 }

ndb/src/ndbapi/ndb_cluster_connection.cpp

@@ -15,16 +15,19 @@
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
 
 #include <ndb_global.h>
-#include <pthread.h>
+#include <my_pthread.h>
 
 #include <ndb_cluster_connection.hpp>
 #include <TransporterFacade.hpp>
 #include <NdbOut.hpp>
 #include <NdbSleep.h>
+#include <NdbThread.h>
 #include <ndb_limits.h>
 #include <ConfigRetriever.hpp>
 #include <ndb_version.h>
 
+static int g_run_connect_thread= 0;
+
 Ndb_cluster_connection::Ndb_cluster_connection(const char *connect_string)
 {
   m_facade= TransporterFacade::theFacadeInstance= new TransporterFacade();
@@ -33,26 +36,75 @@ Ndb_cluster_connection::Ndb_cluster_connection(const char *connect_string)
   else
     m_connect_string= 0;
   m_config_retriever= 0;
+  m_connect_thread= 0;
+  m_connect_callback= 0;
 }
 
-int Ndb_cluster_connection::connect()
+extern "C" pthread_handler_decl(run_ndb_cluster_connection_connect_thread, me)
+{
+  my_thread_init();
+  g_run_connect_thread= 1;
+  ((Ndb_cluster_connection*) me)->connect_thread();
+  my_thread_end();
+  NdbThread_Exit(0);
+  return me;
+}
+
+void Ndb_cluster_connection::connect_thread()
+{
+  DBUG_ENTER("Ndb_cluster_connection::connect_thread");
+  int r;
+  while (g_run_connect_thread) {
+    if ((r = connect(1)) == 0)
+      break;
+    if (r == -1) {
+      printf("Ndb_cluster_connection::connect_thread error\n");
+      abort();
+    }
+  }
+  if (m_connect_callback)
+    (*m_connect_callback)();
+  DBUG_VOID_RETURN;
+}
+
+int Ndb_cluster_connection::start_connect_thread(int (*connect_callback)(void))
+{
+  DBUG_ENTER("Ndb_cluster_connection::start_connect_thread");
+  m_connect_callback= connect_callback;
+  m_connect_thread= NdbThread_Create(run_ndb_cluster_connection_connect_thread,
+				     (void**)this,
+				     32768,
+				     "ndb_cluster_connection",
+				     NDB_THREAD_PRIO_LOW);
+  DBUG_RETURN(0);
+}
+
+int Ndb_cluster_connection::connect(int reconnect)
 {
   DBUG_ENTER("Ndb_cluster_connection::connect");
-  if (m_config_retriever != 0) {
-    DBUG_RETURN(0);
-  }
-
-  m_config_retriever= new ConfigRetriever(NDB_VERSION, NODE_TYPE_API);
-  m_config_retriever->setConnectString(m_connect_string);
-
   const char* error = 0;
   do {
+    if (m_config_retriever == 0)
+    {
+      m_config_retriever= new ConfigRetriever(NDB_VERSION, NODE_TYPE_API);
+      m_config_retriever->setConnectString(m_connect_string);
       if(m_config_retriever->init() == -1)
 	break;
-    
+    }
+    else
+      if (reconnect == 0)
+	DBUG_RETURN(0);
+    if (reconnect)
+    {
+      int r= m_config_retriever->do_connect(1);
+      if (r == 1)
+	DBUG_RETURN(1); // mgmt server not up yet
+      if (r == -1)
+	break;
+    }
+    else
       if(m_config_retriever->do_connect() == -1)
 	break;
-
     Uint32 nodeId = m_config_retriever->allocNodeId();
     for(Uint32 i = 0; nodeId == 0 && i<5; i++){
       NdbSleep_SecSleep(3);
@@ -60,15 +112,12 @@ int Ndb_cluster_connection::connect()
     }
     if(nodeId == 0)
       break;
-
     ndb_mgm_configuration * props = m_config_retriever->getConfig();
     if(props == 0)
       break;
     m_facade->start_instance(nodeId, props);
     free(props);
-
     m_facade->connected();
-
     DBUG_RETURN(0);
   } while(0);
   
@@ -83,7 +132,16 @@ int Ndb_cluster_connection::connect()
 
 Ndb_cluster_connection::~Ndb_cluster_connection()
 {
-  if (m_facade != 0) {
+  if (m_connect_thread)
+  {
+    void *status;
+    g_run_connect_thread= 0;
+    NdbThread_WaitFor(m_connect_thread, &status);
+    NdbThread_Destroy(&m_connect_thread);
+    m_connect_thread= 0;
+  }
+  if (m_facade != 0)
+  {
     delete m_facade;
     if (m_facade != TransporterFacade::theFacadeInstance)
       abort();