2010-06-20 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

	Use auto_delete_container to delete created Command when exception
	is thrown rather than deleting them in catch block.
	* src/AbstractCommand.cc
	* src/CheckIntegrityCommand.cc
	* src/DHTSetup.cc
	* src/FileAllocationCommand.cc
	* src/TrackerWatcherCommand.cc
	* src/a2functional.h

ChangeLog

@@ -1,3 +1,14 @@
+2010-06-20  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Use auto_delete_container to delete created Command when exception
+	is thrown rather than deleting them in catch block.
+	* src/AbstractCommand.cc
+	* src/CheckIntegrityCommand.cc
+	* src/DHTSetup.cc
+	* src/FileAllocationCommand.cc
+	* src/TrackerWatcherCommand.cc
+	* src/a2functional.h
+
 2010-06-20  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Removed BDE and bencode

src/AbstractCommand.cc

@@ -722,14 +722,11 @@ void AbstractCommand::prepareForNextAction(Command* nextCommand)
   SharedHandle<CheckIntegrityEntry> entry
     (new StreamCheckIntegrityEntry(_requestGroup, nextCommand));
 
-  std::vector<Command*> commands;
-  try {
-    _requestGroup->processCheckIntegrityEntry(commands, entry, _e);
-  } catch(RecoverableException& e) {
-    std::for_each(commands.begin(), commands.end(), Deleter());
-    throw;
-  }
-  _e->addCommand(commands);
+  std::vector<Command*>* commands = new std::vector<Command*>();
+  auto_delete_container<std::vector<Command*> > commandsDel(commands);
+  _requestGroup->processCheckIntegrityEntry(*commands, entry, _e);
+  _e->addCommand(*commands);
+  commands->clear();
   _e->setNoWait(true);
 }
 

src/CheckIntegrityCommand.cc

@@ -75,26 +75,20 @@ bool CheckIntegrityCommand::executeInternal()
       getLogger()->notice
         (MSG_VERIFICATION_SUCCESSFUL,
          getRequestGroup()->getDownloadContext()->getBasePath().c_str());
-      std::vector<Command*> commands;
-      try {
-        _entry->onDownloadFinished(commands, getDownloadEngine());
-      } catch(RecoverableException& e) {
-        std::for_each(commands.begin(), commands.end(), Deleter());
-        throw;
-      }
-      getDownloadEngine()->addCommand(commands);
+      std::vector<Command*>* commands = new std::vector<Command*>();
+      auto_delete_container<std::vector<Command*> > commandsDel(commands);
+      _entry->onDownloadFinished(*commands, getDownloadEngine());
+      getDownloadEngine()->addCommand(*commands);
+      commands->clear();
     } else {
       getLogger()->error
         (MSG_VERIFICATION_FAILED,
          getRequestGroup()->getDownloadContext()->getBasePath().c_str());
-      std::vector<Command*> commands;
-      try {
-        _entry->onDownloadIncomplete(commands, getDownloadEngine());
-      } catch(RecoverableException& e) {
-        std::for_each(commands.begin(), commands.end(), Deleter());
-        throw;
-      }
-      getDownloadEngine()->addCommand(commands);
+      std::vector<Command*>* commands = new std::vector<Command*>();
+      auto_delete_container<std::vector<Command*> > commandsDel(commands);
+      _entry->onDownloadIncomplete(*commands, getDownloadEngine());
+      getDownloadEngine()->addCommand(*commands);
+      commands->clear();
     }
     getDownloadEngine()->setNoWait(true);
     return true;

src/DHTSetup.cc

@@ -91,8 +91,9 @@ void DHTSetup::setup(std::vector<Command*>& commands, DownloadEngine* e)
   if(_initialized) {
     return;
   }
-  std::vector<Command*> tempCommands;
   try {
+    std::vector<Command*>* tempCommands = new std::vector<Command*>();
+    auto_delete_container<std::vector<Command*> > commandsDel(tempCommands);
     // load routing table and localnode id here
 
     SharedHandle<DHTNode> localNode;
@@ -219,7 +220,7 @@ void DHTSetup::setup(std::vector<Command*>& commands, DownloadEngine* e)
         command->setTaskFactory(taskFactory);
         command->setRoutingTable(routingTable);
         command->setLocalNode(localNode);
-        tempCommands.push_back(command);
+        tempCommands->push_back(command);
       }
     } else {
       _logger->info("No DHT entry point specified.");
@@ -231,13 +232,13 @@ void DHTSetup::setup(std::vector<Command*>& commands, DownloadEngine* e)
       command->setMessageReceiver(receiver);
       command->setTaskQueue(taskQueue);
       command->setReadCheckSocket(connection->getSocket());
-      tempCommands.push_back(command);
+      tempCommands->push_back(command);
     }
     {
       DHTTokenUpdateCommand* command =
         new DHTTokenUpdateCommand(e->newCUID(), e, DHT_TOKEN_UPDATE_INTERVAL);
       command->setTokenTracker(tokenTracker);
-      tempCommands.push_back(command);
+      tempCommands->push_back(command);
     }
     {
       DHTBucketRefreshCommand* command =
@@ -246,28 +247,29 @@ void DHTSetup::setup(std::vector<Command*>& commands, DownloadEngine* e)
       command->setTaskQueue(taskQueue);
       command->setRoutingTable(routingTable);
       command->setTaskFactory(taskFactory);
-      tempCommands.push_back(command);
+      tempCommands->push_back(command);
     }
     {
       DHTPeerAnnounceCommand* command =
         new DHTPeerAnnounceCommand(e->newCUID(), e,
                                    DHT_PEER_ANNOUNCE_CHECK_INTERVAL);
       command->setPeerAnnounceStorage(peerAnnounceStorage);
-      tempCommands.push_back(command);
+      tempCommands->push_back(command);
     }
     {
       DHTAutoSaveCommand* command =
         new DHTAutoSaveCommand(e->newCUID(), e, 30*60);
       command->setLocalNode(localNode);
       command->setRoutingTable(routingTable);
-      tempCommands.push_back(command);
+      tempCommands->push_back(command);
     }
     _initialized = true;
-    commands.insert(commands.end(), tempCommands.begin(), tempCommands.end());
+    commands.insert(commands.end(), tempCommands->begin(), tempCommands->end());
+    tempCommands->clear();
   } catch(RecoverableException& e) {
-    _logger->error("Exception caught while initializing DHT functionality. DHT is disabled.", e);
+    _logger->error("Exception caught while initializing DHT functionality."
+                   " DHT is disabled.", e);
     DHTRegistry::clearData();
-    std::for_each(tempCommands.begin(), tempCommands.end(), Deleter());
   }
 }
 

src/FileAllocationCommand.cc

@@ -76,14 +76,11 @@ bool FileAllocationCommand::executeInternal()
     }
     getDownloadEngine()->getFileAllocationMan()->dropPickedEntry();
     
-    std::vector<Command*> commands;
-    try {
-      _fileAllocationEntry->prepareForNextAction(commands, getDownloadEngine());
-    } catch(RecoverableException& e) {
-      std::for_each(commands.begin(), commands.end(), Deleter());
-      throw;
-    }
-    getDownloadEngine()->addCommand(commands);
+    std::vector<Command*>* commands = new std::vector<Command*>();
+    auto_delete_container<std::vector<Command*> > commandsDel(commands);
+    _fileAllocationEntry->prepareForNextAction(*commands, getDownloadEngine());
+    getDownloadEngine()->addCommand(*commands);
+    commands->clear();
     getDownloadEngine()->setNoWait(true);
     return true;
   } else {

src/TrackerWatcherCommand.cc

@@ -104,17 +104,17 @@ bool TrackerWatcherCommand::execute() {
   if(_trackerRequestGroup.isNull()) {
     _trackerRequestGroup = createAnnounce();
     if(!_trackerRequestGroup.isNull()) {
-      std::vector<Command*> commands;
       try {
-        _trackerRequestGroup->createInitialCommand(commands, _e);
+        std::vector<Command*>* commands = new std::vector<Command*>();
+        auto_delete_container<std::vector<Command*> > commandsDel(commands);
+        _trackerRequestGroup->createInitialCommand(*commands, _e);
+        _e->addCommand(*commands);
+        commands->clear();
+        if(getLogger()->debug()) {
+          getLogger()->debug("added tracker request command");
+        }
       } catch(RecoverableException& ex) {
         getLogger()->error(EX_EXCEPTION_CAUGHT, ex);
-        std::for_each(commands.begin(), commands.end(), Deleter());
-        commands.clear();
-      }
-      _e->addCommand(commands);
-      if(getLogger()->debug()) {
-        getLogger()->debug("added tracker request command");
       }
     }
   } else if(_trackerRequestGroup->downloadFinished()){

src/a2functional.h

@@ -36,9 +36,11 @@
 #define _D_A2_FUNCTIONAL_H_
 
 #include <functional>
+#include <string>
+#include <algorithm>
+
 #include "SharedHandle.h"
 #include "A2STR.h"
-#include <string>
 
 namespace aria2 {
 
@@ -204,6 +206,20 @@ public:
   }
 };
 
+template<class Container>
+class auto_delete_container {
+private:
+  Container* _c;
+public:
+  auto_delete_container(Container* c):_c(c) {}
+
+  ~auto_delete_container()
+  {
+    std::for_each(_c->begin(), _c->end(), Deleter());
+    delete _c;
+  }
+};
+
 template<typename InputIterator, typename DelimiterType>
 std::string strjoin(InputIterator first, InputIterator last,
                     const DelimiterType& delim)