Avoiding 'new' where possible; more dilligent deletes

TODO.txt

@@ -8,9 +8,16 @@ Important Features:
 
 
 Important improvements:
+* Stop locking during updates
+* Stop memory accumulation
+	* A few MB accumulate on every update
+	* ime it's than .1 MB per feed― but if you have several feeds, it can
+	  accumulate to a hefty sum after some time. In my case, with ~40 feeds
+	  and updates every 30 minutes, it got to about 200MB after a week or
+	  so.
+	* _Huge_ problem, but I haven't had luck figuring it out yet…
 * Proper queue list (see Multiple downloads at once?)
 * No hardcoded paths
-* Remove unnecessary `new`-- make sure to delete everything
 * General input sanitization
 * File error-handling
 	* e.g., Utils.cpp's userFileError

src/App.cpp

@@ -25,19 +25,6 @@
 #include "Util.h"
 
 
-int
-main(int argc, char** argv)
-{
-	srand(time(0));
-	installMimeTypes();
-
-	App* app = new App();
-	app->Run();
-	app->fPreferences->Save();
-	return 0;
-}
-
-
 App::App() : BApplication("application/x-vnd.Pogger")
 {
 	fPreferences = new Preferences;
@@ -49,14 +36,14 @@ App::App() : BApplication("application/x-vnd.Pogger")
 	fNotifier = new Notifier();
 	fFeedController = new FeedController();
 
-	BMessage* updateMessage = new BMessage(kUpdateSubscribed);
+	BMessage updateMessage(kUpdateSubscribed);
 	int64 interval = fPreferences->UpdateInterval();
 	int32 count = -1;
 
 	if (interval == -1)
 		count = 0;
 //	else
-//		MessageReceived(updateMessage);
+//		MessageReceived(&updateMessage);
 
 	fUpdateRunner = new BMessageRunner(this, updateMessage, interval, count);
 }
@@ -106,6 +93,19 @@ App::MessageReceived(BMessage* msg)
 }
 
 
+bool
+App::QuitRequested()
+{
+	delete fUpdateRunner, fFeedController, fNotifier;
+	if (fMainWindow->Lock())
+		fMainWindow->Quit();
+
+	fPreferences->Save();
+	delete fPreferences;
+	return true;
+}
+
+
 void
 App::ArgvReceived(int32 argc, char** argv)
 {
@@ -121,10 +121,10 @@ App::ArgvReceived(int32 argc, char** argv)
 		else if (BUrl(argv[i]).IsValid()) {
 			Feed* newFeed = new Feed(BUrl(argv[i]));
 
-			BMessage* enqueue = new BMessage(kEnqueueFeed);
+			BMessage enqueue = BMessage(kEnqueueFeed);
-			enqueue->AddData("feeds", B_RAW_TYPE, (void*)newFeed, sizeof(Feed));
+			enqueue.AddData("feeds", B_RAW_TYPE, (void*)newFeed, sizeof(Feed));
 
-			MessageReceived(enqueue);
+			MessageReceived(&enqueue);
 		}
 	}
 	RefsReceived(&refMsg);
@@ -216,3 +216,15 @@ App::_OpenSourceFile(BMessage* refMessage)
 const char* configPath = "/boot/home/config/settings/Pogger/";
 
 
+int
+main(int argc, char** argv)
+{
+	srand(time(0));
+	installMimeTypes();
+
+	App* app = new App();
+	app->Run();
+	return 0;
+}
+
+

src/App.h

@@ -20,8 +20,11 @@ class Notifier;
 class App : public BApplication
 {
 public:
-	App(void);
+	App();
+
 	void MessageReceived(BMessage* msg);
+	bool QuitRequested();
+
 	void ArgvReceived(int32 argc, char** argv);
 	void RefsReceived(BMessage* message);
 

src/AtomFeed.cpp

@@ -75,8 +75,7 @@ AtomFeed::RootParse(tinyxml2::XMLElement* xfeed)
 void
 AtomFeed::EntryParse(tinyxml2::XMLElement* xentry)
 {
-	Entry* newEntry = (Entry*)malloc(sizeof(Entry));
+	Entry* newEntry = new Entry();
-	newEntry = new Entry();
 
 	tinyxml2::XMLElement* xcontent = xentry->FirstChildElement("content");
 	tinyxml2::XMLElement* xmedia   = xentry->FirstChildElement("media:group");

src/Entry.cpp

@@ -23,32 +23,36 @@ Entry::Entry()
 }
 
 
+Entry::~Entry()
+{}
+
+
 bool
 Entry::Filetize(BDirectory outDir)
 {
-	BFile* file = new BFile(title.String(), B_READ_WRITE);
+	BFile file(title.String(), B_READ_WRITE);
 	time_t tt_date = date.Time_t();
 
-	outDir.CreateFile(title.String(), file);
+	outDir.CreateFile(title.String(), &file);
 
 	BString betype = BString("text/x-feed-entry");
-	file->WriteAttr("BEOS:TYPE", B_MIME_STRING_TYPE, 0, betype.String(),
+	file.WriteAttr("BEOS:TYPE", B_MIME_STRING_TYPE, 0, betype.String(),
 		betype.CountChars() + 1);
 
-	file->WriteAttr("Feed:name", B_STRING_TYPE, 0,
+	file.WriteAttr("Feed:name", B_STRING_TYPE, 0,
 		title.String(), title.CountChars());
-	file->WriteAttr("Feed:description", B_STRING_TYPE, 0,
+	file.WriteAttr("Feed:description", B_STRING_TYPE, 0,
 		description.String(), description.CountChars());
-	file->WriteAttr("Feed:source", B_STRING_TYPE, 0,
+	file.WriteAttr("Feed:source", B_STRING_TYPE, 0,
 		feedTitle.String(), feedTitle.CountChars());
-	file->WriteAttr("META:url", B_STRING_TYPE, 0, postUrl.String(),
+	file.WriteAttr("META:url", B_STRING_TYPE, 0, postUrl.String(),
 		postUrl.CountChars());
 
 	if (date != NULL) {
-		file->WriteAttr("Feed:when", B_TIME_TYPE, 0, &tt_date, sizeof(time_t));
+		file.WriteAttr("Feed:when", B_TIME_TYPE, 0, &tt_date, sizeof(time_t));
 	}
 
-	file->Write(content.String(), content.Length());
+	file.Write(content.String(), content.Length());
 	return false;
 }
 

src/Entry.h

@@ -18,6 +18,7 @@ class Entry {
 public:
 	
 	Entry();
+	~Entry();
 
 	bool Filetize(BDirectory outDir);
 

src/Feed.cpp

@@ -86,6 +86,13 @@ Feed::Feed()
 }
 
 
+Feed::~Feed()
+{
+	for (int i = entries.CountItems(); i >= 0; i--)
+		delete ((Entry*)entries.RemoveItem(i));
+}
+
+
 void
 Feed::Parse()
 {

src/Feed.h

@@ -27,6 +27,8 @@ public:
 	Feed(Feed*);
 	Feed();
 
+	~Feed();
+
 	virtual void Parse();
 
 	BList	GetEntries();

src/FeedController.cpp

@@ -60,10 +60,10 @@ FeedController::MessageReceived(BMessage* msg)
 		{
 			BList subFeeds = SubscribedFeeds();
 			for (int i = 0; i < subFeeds.CountItems(); i++) {
-				BMessage* getFeed = new BMessage(kEnqueueFeed);
+				BMessage getFeed(kEnqueueFeed);
-				getFeed->AddData("feeds", B_RAW_TYPE, subFeeds.ItemAt(i),
+				getFeed.AddData("feeds", B_RAW_TYPE, subFeeds.ItemAt(i),
 					sizeof(Feed));
-				((App*)be_app)->MessageReceived(getFeed);
+				((App*)be_app)->MessageReceived(&getFeed);
 			}
 			break;
 		}
@@ -83,10 +83,10 @@ FeedController::MessageReceived(BMessage* msg)
 				if (((Feed*)data)->IsUpdated() == true)
 					send_data(fParseThread, msg->what, data, size);
 				else {
-					BMessage* complete = new BMessage(kParseComplete);
+					BMessage complete(kParseComplete);
-					complete->AddString("feed_name", ((Feed*)data)->GetTitle());
+					complete.AddString("feed_name", ((Feed*)data)->GetTitle());
-					complete->AddInt32("entry_count", 0);
+					complete.AddInt32("entry_count", 0);
-					((App*)be_app)->MessageReceived(complete);
+					((App*)be_app)->MessageReceived(&complete);
 				}
 				i++;
 			}
@@ -118,25 +118,25 @@ int32
 FeedController::_DownloadLoop(void* ignored)
 {
 	thread_id sender;
-	Feed* feedBuffer = new Feed();
+	Feed* feedBuffer = (Feed*)malloc(sizeof(Feed));
 
 	while (receive_data(&sender, (void*)feedBuffer, sizeof(Feed)) != 0) {
 		std::cout << "Downloading feed from "
 			<< feedBuffer->GetXmlUrl().UrlString() << "…\n";
 
-		BMessage* downloadInit = new BMessage(kDownloadStart);
+		BMessage downloadInit = BMessage(kDownloadStart);
-		downloadInit->AddString("feed", feedBuffer->GetTitle());
+		downloadInit.AddString("feed", feedBuffer->GetTitle());
-		((App*)be_app)->MessageReceived(downloadInit);
+		((App*)be_app)->MessageReceived(&downloadInit);
 
 		if (feedBuffer->Fetch()) {
-			BMessage* downloaded = new BMessage(kDownloadComplete);
+			BMessage downloaded = BMessage(kDownloadComplete);
-			downloaded->AddData("feeds", B_RAW_TYPE, feedBuffer, sizeof(Feed));
+			downloaded.AddData("feeds", B_RAW_TYPE, feedBuffer, sizeof(Feed));
-			((App*)be_app)->MessageReceived(downloaded);
+			((App*)be_app)->MessageReceived(&downloaded);
 		}
 		else {
-			BMessage* failure = new BMessage(kDownloadFail);
+			BMessage failure = BMessage(kDownloadFail);
-			failure->AddString("feed_url", feedBuffer->GetXmlUrl().UrlString());
+			failure.AddString("feed_url", feedBuffer->GetXmlUrl().UrlString());
-			((App*)be_app)->MessageReceived(failure);
+			((App*)be_app)->MessageReceived(&failure);
 		}
 	}
 	delete(feedBuffer);
@@ -148,7 +148,7 @@ int32
 FeedController::_ParseLoop(void* ignored)
 {
 	thread_id sender;
-	Feed* feedBuffer = new Feed();
+	Feed* feedBuffer = (Feed*)malloc(sizeof(Feed));
 
 	while (receive_data(&sender, (void*)feedBuffer, sizeof(Feed)) != 0) {
 		BList entries;
@@ -162,7 +162,10 @@ FeedController::_ParseLoop(void* ignored)
 			feed->Parse();
 			entries = feed->GetNewEntries();
 			feedTitle = feed->GetTitle();
-			delete(feed);
+
+			for (int i = 0; i < entries.CountItems(); i++)
+				((Entry*)entries.ItemAt(i))->Filetize(outDir);
+			delete feed;
 		}
 		else if (feedBuffer->IsRss()) {
 			RssFeed* feed = (RssFeed*)malloc(sizeof(RssFeed));
@@ -170,26 +173,26 @@ FeedController::_ParseLoop(void* ignored)
 			feed->Parse();
 			entries = feed->GetNewEntries();
 			feedTitle = feed->GetTitle();
-			delete(feed);
+
+			for (int i = 0; i < entries.CountItems(); i++)
+				((Entry*)entries.ItemAt(i))->Filetize(outDir);
+			delete feed;
 		}
 
 
 		if (feedBuffer->IsAtom() || feedBuffer->IsRss()) {
-			for (int i = 0; i < entries.CountItems(); i++)
+			BMessage complete = BMessage(kParseComplete);
-				((Entry*)entries.ItemAt(i))->Filetize(outDir);
+			complete.AddString("feed_name", feedTitle);
-
+			complete.AddInt32("entry_count", entries.CountItems());
-			BMessage* complete = new BMessage(kParseComplete);
+			((App*)be_app)->MessageReceived(&complete);
-			complete->AddString("feed_name", feedTitle);
-			complete->AddInt32("entry_count", entries.CountItems());
-			((App*)be_app)->MessageReceived(complete);
 		}
 		else {
-			BMessage* failure = new BMessage(kParseFail);
+			BMessage failure = BMessage(kParseFail);
-			failure->AddString("feed_url", feedUrl.UrlString());
+			failure.AddString("feed_url", feedUrl.UrlString());
-			((App*)be_app)->MessageReceived(failure);
+			((App*)be_app)->MessageReceived(&failure);
 		}
 	}
-	
+
 	delete (feedBuffer);
 	return 0;
 }

src/FeedController.h

@@ -29,6 +29,7 @@ class FeedController{
 public:
 	FeedController();
 	~FeedController();
+
 	void MessageReceived(BMessage* msg);
 	static BList SubscribedFeeds();
 

src/FeedEditWindow.cpp

@@ -137,11 +137,12 @@ FeedEditWindow::_SaveFeed()
 	fFeed->SetXmlUrl(BUrl(urlString));
 	fFeed->Filetize();
 
-	BMessage* enqueueUpdated = new BMessage(kEnqueueFeed);
+	BMessage edited(kFeedsEdited);
-	enqueueUpdated->AddData("feeds", B_RAW_TYPE, (void*)fFeed, sizeof(Feed));
+	BMessage enqueueUpdated(kEnqueueFeed);
+	enqueueUpdated.AddData("feeds", B_RAW_TYPE, (void*)fFeed, sizeof(Feed));
 
-	((App*)be_app)->MessageReceived(enqueueUpdated);
+	((App*)be_app)->MessageReceived(&enqueueUpdated);
-	((App*)be_app)->PostMessage(new BMessage(kFeedsEdited));
+	((App*)be_app)->PostMessage(&edited);
 	Quit();
 }
 
@@ -150,7 +151,8 @@ void
 FeedEditWindow::_DeleteFeed()
 {
 	fFeed->Unfiletize();
-	((App*)be_app)->PostMessage(new BMessage(kFeedsEdited));
+	BMessage edited(kFeedsEdited);
+	((App*)be_app)->PostMessage(&edited);
 	Quit();
 }
 

src/FeedsView.cpp

@@ -13,8 +13,6 @@
 #include <SeparatorView.h>
 #include <StringView.h>
 
-#include <cstdio>
-
 #include "App.h"
 #include "Feed.h"
 #include "FeedController.h"
@@ -52,7 +50,6 @@ FeedsView::MessageReceived(BMessage* msg)
 		case kFeedsEditButton:
 		{
 			_EditSelectedFeed();
-			_PopulateFeedList();
 			break;
 		}
 		case kFeedsSelected:
@@ -180,12 +177,17 @@ FeedsView::_PopulateFeedList()
 	BList feeds = FeedController::SubscribedFeeds();
 	int32 selected = fFeedsListView->CurrentSelection();
 
-	fFeedsListView->MakeEmpty();
+	for (int i = fFeedsListView->CountItems(); i >= 0; i--)
+		delete ((FeedListItem*)fFeedsListView->RemoveItem(i));
+
 	for (int i = 0; i < feeds.CountItems(); i++) {
 		FeedListItem* item = new FeedListItem((Feed*)feeds.ItemAt(i));
 		fFeedsListView->AddItem(item);
 	}
 
+	for (int i = feeds.CountItems(); i >= 0; i--)
+		delete ((Feed*)feeds.RemoveItem(i));
+
 	if (fFeedsListView->CountItems() < selected)
 		selected = fFeedsListView->CountItems();
 	fFeedsListView->Select(selected);

src/Notifier.cpp

@@ -134,11 +134,11 @@ Notifier::_DownloadFailNotification(BString feedUrl)
 void
 Notifier::_UpdateProgress()
 {
-	BMessage* progress = new BMessage(kProgress);
+	BMessage progress = BMessage(kProgress);
-	progress->AddInt32("max", fEnqueuedFeeds);
+	progress.AddInt32("max", fEnqueuedFeeds);
-	progress->AddInt32("current", fFeedsInProgress);
+	progress.AddInt32("current", fFeedsInProgress);
 
-	((App*)be_app)->MessageReceived(progress);
+	((App*)be_app)->MessageReceived(&progress);
 
 	if (fFeedsInProgress == 0)
 		fEnqueuedFeeds = 0;

src/RssFeed.cpp

@@ -59,8 +59,7 @@ RssFeed::RootParse(tinyxml2::XMLElement* xchan)
 void
 RssFeed::EntryParse(tinyxml2::XMLElement* xitem)
 {
-	Entry* newEntry = (Entry*)malloc(sizeof(Entry));
+	Entry* newEntry = new Entry();
-	newEntry = new Entry();
 
 	newEntry->SetTitle(xitem->FirstChildElement("title"));
 	newEntry->SetDesc(xitem->FirstChildElement("description"));

src/UpdatesView.cpp

@@ -93,7 +93,7 @@ UpdatesView::_InitInterface()
 	fIntervalSlider->SetHashMarkCount(26);
 	fIntervalSlider->SetHashMarks(B_HASH_MARKS_BOTTOM);
 	fIntervalSlider->SetLimitLabels("Never", "24 hours");
-	fIntervalSlider->SetModificationMessage(new BMessage('iiii'));
+	fIntervalSlider->SetModificationMessage(new BMessage(kIntervalChanged));
 
 
 	// Display current settings