2008-06-08 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	Added --bt-max-open-files option.
	* src/DefaultPieceStorage.cc
	* src/HelpItemFactory.cc
	* src/MultiDiskAdaptor.cc
	* src/MultiDiskAdaptor.h
	* src/OptionHandlerFactory.cc
	* src/option_processing.cc
	* src/prefs.cc
	* src/prefs.h
	* src/usage_text.h

ChangeLog

@@ -1,3 +1,16 @@
+2008-06-08  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
+
+	Added --bt-max-open-files option.
+	* src/DefaultPieceStorage.cc
+	* src/HelpItemFactory.cc
+	* src/MultiDiskAdaptor.cc
+	* src/MultiDiskAdaptor.h
+	* src/OptionHandlerFactory.cc
+	* src/option_processing.cc
+	* src/prefs.cc
+	* src/prefs.h
+	* src/usage_text.h
+	
 2008-06-08  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
 
 	Fixed the bug that aria2 aborts when a path to a directory is given

src/DefaultPieceStorage.cc

@@ -444,6 +444,7 @@ void DefaultPieceStorage::initStorage()
       multiDiskAdaptor->setDirectIOAllowed(option->getAsBool(PREF_ENABLE_DIRECT_IO));
       multiDiskAdaptor->setPieceLength(downloadContext->getPieceLength());
       multiDiskAdaptor->setTopDir(downloadContext->getName());
+      multiDiskAdaptor->setMaxOpenFiles(option->getAsInt(PREF_BT_MAX_OPEN_FILES));
       this->diskAdaptor = multiDiskAdaptor;
     } else {
       logger->debug("Instantiating CopyDiskAdaptor");

src/HelpItemFactory.cc

@@ -381,6 +381,13 @@ TagContainerHandle HelpItemFactory::createHelpItems(const Option* op)
     item->addTag(TAG_BITTORRENT);
     tc->addItem(item);
   }
+  {
+    HelpItemHandle item(new HelpItem(PREF_BT_MAX_OPEN_FILES,
+				     TEXT_BT_MAX_OPEN_FILES,
+				     op->get(PREF_BT_MAX_OPEN_FILES)));
+    item->addTag(TAG_BITTORRENT);
+    tc->addItem(item);
+  }
 #endif // ENABLE_BITTORRENT
 #ifdef ENABLE_METALINK
   {

src/MultiDiskAdaptor.cc

@@ -145,7 +145,7 @@ void DiskWriterEntry::disableDirectIO()
 }
 
 MultiDiskAdaptor::MultiDiskAdaptor():
-  pieceLength(0) {}
+  pieceLength(0), _maxOpenFiles(DEFAULT_MAX_OPEN_FILES) {}
 
 MultiDiskAdaptor::~MultiDiskAdaptor() {}
 
@@ -190,7 +190,7 @@ void MultiDiskAdaptor::openIfNot
  
     size_t numOpened = _openedDiskWriterEntries.size();
     (entry.get()->*open)(topDirPath);
-    if(numOpened >= OPEN_FILE_MAX) {
+    if(numOpened >= _maxOpenFiles) {
       // Cache is full. 
       // Choose one DiskWriterEntry randomly and close it.
       size_t index = SimpleRandomizer::getInstance()->getRandomNumber(numOpened);
@@ -386,4 +386,9 @@ void MultiDiskAdaptor::disableDirectIO()
   }
 }
 
+void MultiDiskAdaptor::setMaxOpenFiles(size_t maxOpenFiles)
+{
+  _maxOpenFiles = maxOpenFiles;
+}
+
 } // namespace aria2

src/MultiDiskAdaptor.h

@@ -104,6 +104,8 @@ private:
 
   std::deque<SharedHandle<DiskWriterEntry> > _openedDiskWriterEntries;
 
+  size_t _maxOpenFiles;
+
   bool _directIOAllowed;
 
   void resetDiskWriterEntries();
@@ -116,7 +118,7 @@ private:
 		 void (DiskWriterEntry::*f)(const std::string&),
 		 const std::string& topDirPath);
  
-  static const size_t OPEN_FILE_MAX = 100;
+  static const size_t DEFAULT_MAX_OPEN_FILES = 100;
 
 public:
   MultiDiskAdaptor();
@@ -178,6 +180,8 @@ public:
   {
     _directIOAllowed = b;
   }
+
+  void setMaxOpenFiles(size_t maxOpenFiles);
 };
 
 typedef SharedHandle<MultiDiskAdaptor> MultiDiskAdaptorHandle;

src/OptionHandlerFactory.cc

@@ -127,6 +127,7 @@ OptionHandlers OptionHandlerFactory::createOptionHandlers()
   handlers.push_back(SH(new ParameterOptionHandler(PREF_BT_MIN_CRYPTO_LEVEL, V_PLAIN, V_ARC4)));
   handlers.push_back(SH(new BooleanOptionHandler(PREF_BT_REQUIRE_CRYPTO)));
   handlers.push_back(SH(new NumberOptionHandler(PREF_BT_REQUEST_PEER_SPEED_LIMIT, 0)));
+  handlers.push_back(SH(new NumberOptionHandler(PREF_BT_MAX_OPEN_FILES, 1)));
   handlers.push_back(SH(new CumulativeOptionHandler(PREF_HEADER, "\n")));
   handlers.push_back(SH(new BooleanOptionHandler(PREF_QUIET)));
 #ifdef ENABLE_ASYNC_DNS

src/option_processing.cc

@@ -144,6 +144,7 @@ Option* createDefaultOption()
   op->put(PREF_BT_MIN_CRYPTO_LEVEL, V_PLAIN);
   op->put(PREF_BT_REQUIRE_CRYPTO, V_FALSE);
   op->put(PREF_BT_REQUEST_PEER_SPEED_LIMIT, "51200");
+  op->put(PREF_BT_MAX_OPEN_FILES, "100");
   op->put(PREF_QUIET, V_FALSE);
   op->put(PREF_STOP, "0");
 #ifdef ENABLE_ASYNC_DNS
@@ -254,6 +255,7 @@ Option* option_processing(int argc, char* const argv[])
       { PREF_BT_MIN_CRYPTO_LEVEL.c_str(), required_argument, &lopt, 30 },
       { PREF_BT_REQUIRE_CRYPTO.c_str(), required_argument, &lopt, 31 },
       { PREF_BT_REQUEST_PEER_SPEED_LIMIT.c_str(), required_argument, &lopt, 32 },
+      { PREF_BT_MAX_OPEN_FILES.c_str(), required_argument, &lopt, 33},
 #endif // ENABLE_BITTORRENT
 #ifdef ENABLE_METALINK
       { PREF_METALINK_FILE.c_str(), required_argument, NULL, 'M' },
@@ -367,6 +369,9 @@ Option* option_processing(int argc, char* const argv[])
       case 32:
 	cmdstream << PREF_BT_REQUEST_PEER_SPEED_LIMIT << "=" << optarg << "\n";
 	break;
+      case 33:
+	cmdstream << PREF_BT_MAX_OPEN_FILES << "=" << optarg << "\n";
+	break;
       case 100:
 	cmdstream << PREF_METALINK_VERSION << "=" << optarg << "\n";
 	break;

src/prefs.cc

@@ -249,6 +249,8 @@ const std::string V_ARC4("arc4");
 const std::string PREF_BT_REQUIRE_CRYPTO("bt-require-crypto");
 // values: 1*digit
 const std::string PREF_BT_REQUEST_PEER_SPEED_LIMIT("bt-request-peer-speed-limit");
+// values: 1*digit
+const std::string PREF_BT_MAX_OPEN_FILES("bt-max-open-files");
 
 /**
  * Metalink related preferences

src/prefs.h

@@ -253,6 +253,8 @@ extern const std::string V_ARC4;
 extern const std::string PREF_BT_REQUIRE_CRYPTO;
 // values: 1*digit
 extern const std::string PREF_BT_REQUEST_PEER_SPEED_LIMIT;
+// values: 1*digit
+extern const std::string PREF_BT_MAX_OPEN_FILES;
 
 /**
  * Metalink related preferences

src/usage_text.h

@@ -279,6 +279,9 @@ _(" --bt-request-peer-speed-limit=SPEED In BitTorrent downloads, if the download
   "                              speed is lower than SPEED, aria2 initiates and\n"\
   "                              accepts connections ignoring max peer cap.\n"\
   "                              You can append K or M(1K = 1024, 1M = 1024K).")
+#define TEXT_BT_MAX_OPEN_FILES \
+_(" --bt-max-open-files=NUM      Specify maximum number of files to open in each\n"\
+  "                              BitTorrent download.")
 #define TEXT_METALINK_FILE \
 _(" -M, --metalink-file=METALINK_FILE The file path to the .metalink file.")
 #define TEXT_METALINK_SERVERS \