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• Collision problems with drag-n-drop puzzle game.

  - by Amplify91

  I am working on an Android game similar to the Rush Hour/Traffic Jam/Blocked puzzle games. The board is a square containing rectangular pieces. Long pieces may only move horizontally, and tall pieces may only move vertically. The object is to free the red piece and move it out of the board. This game is only my second ever programming project in any language, so any tips or best practices would be appreciated along with your answer. I have a class for the game pieces called Pieces that describes how they are sized and drawn to the screen, gives them drag-and-drop functionality, and detects and handles collisions. I then have an activity class called GameView which creates my layout and creates Pieces objects to add to a RelativeLayout called Board. I have considered making Board its own class, but haven't needed to yet. Here's what my work in progress looks like: My Question: Most of this works perfectly fine except for my collision handling. It seems to be detecting collisions well but instead of pushing the pieces outside of each other when there is a collision, it frantically snaps back and forth between (what seems to be) where the piece is being dragged to and where it should be. It looks something like this: Another oddity: when the dragged piece collides with a piece to its left, the collision handling seems to work perfectly. Only piece above, below, and to the right cause problems. Here's the collision code: @Override public boolean onTouchEvent(MotionEvent event){ float eventX = event.getX(); float eventY = event.getY(); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: //check if touch is on piece if (eventX > x && eventX < (x+width) && eventY > y && eventY < (y+height)){ initialX=x; initialY=y; break; }else{ return false; } case MotionEvent.ACTION_MOVE: //determine if piece should move horizontally or vertically if(width>height){ for (Pieces piece : aPieces) { //if object equals itself in array, skip to next object if(piece==this){ continue; } //if next to another piece, //do not allow to move any further towards said piece if(eventX<x&&(x==piece.right+1)){ return false; }else if(eventX>x&&(x==piece.x-width-1)){ return false; } //move normally if no collision //if collision, do not allow to move through other piece if(collides(this,piece)==false){ x = (eventX-(width/2)); }else if(collidesLeft(this,piece)){ x = piece.right+1; break; }else if(collidesRight(this,piece)){ x = piece.x-width-1; break; } } break; }else if(height>width){ for (Pieces piece : aPieces) { if(piece==this){ continue; }else if(collides(this,piece)==false){ y = (eventY-(height/2)); }else if(collidesUp(this,piece)){ y = piece.bottom+1; break; }else if(collidesDown(this,piece)){ y = piece.y-height-1; break; } } } invalidate(); break; case MotionEvent.ACTION_UP: // end move if(this.moves()){ GameView.counter++; } initialX=x; initialY=y; break; } // parse puzzle invalidate(); return true; } This takes place during onDraw: width = sizedBitmap.getWidth(); height = sizedBitmap.getHeight(); right = x+width; bottom = y+height; My collision-test methods look like this with different math for each: private boolean collidesDown(Pieces piece1, Pieces piece2){ float x1 = piece1.x; float y1 = piece1.y; float r1 = piece1.right; float b1 = piece1.bottom; float x2 = piece2.x; float y2 = piece2.y; float r2 = piece2.right; float b2 = piece2.bottom; if((y1<y2)&&(y1<b2)&&(b1>=y2)&&(b1<b2)&&((x1>=x2&&x1<=r2)||(r1>=x2&&x1<=r2))){ return true; }else{ return false; } } private boolean collides(Pieces piece1, Pieces piece2){ if(collidesLeft(piece1,piece2)){ return true; }else if(collidesRight(piece1,piece2)){ return true; }else if(collidesUp(piece1,piece2)){ return true; }else if(collidesDown(piece1,piece2)){ return true; }else{ return false; } } As a second question, should my x,y,right,bottom,width,height variables be ints instead of floats like they are now? Also, any suggestions on how to implement things better would be greatly appreciated, even if not relevant to the question! Thanks in advance for the help and for sitting through such a long question! Update: I have gotten it working almost perfectly with the following code (this doesn't include the code for vertical pieces): @Override public boolean onTouchEvent(MotionEvent event){ float eventX = event.getX(); float eventY = event.getY(); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: //check if touch is on piece if (eventX > x && eventX < (x+width) && eventY > y && eventY < (y+height)){ initialX=x; initialY=y; break; }else{ return false; } case MotionEvent.ACTION_MOVE: //determine if piece should move horizontally or vertically if(width>height){ for (Pieces piece : aPieces) { //if object equals itself in array, skip to next object if(piece==this){ continue; } //check if there the possibility for a horizontal collision if(this.isAllignedHorizontallyWith(piece)){ //check for and handle collisions while moving left if(this.isRightOf(piece)){ if(eventX>piece.right+(width/2)){ x = (int)(eventX-(width/2)); //move normally }else{ x = piece.right+1; } } //check for and handle collisions while moving right if(this.isLeftOf(piece)){ if(eventX<piece.x-(width/2)){ x = (int)(eventX-(width/2)); }else{ x = piece.x-width-1; } } break; }else{ x = (int)(eventX-(width/2)); } The only problem with this code is that it only detects collisions between the moving piece and one other (with preference to one on the left). If there is a piece to collide with on the left and another on the right, it will only detect collisions with the one on the left. I think this is because once it finds a possible collision, it handles it without finishing looping through the array holding all the pieces. How do I get it to check for multiple possible collisions at the same time?

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• On screen orientation loads again data with Async Task

  - by Zookey

  I make Android application with master/detail pattern. So I have ListActivity class which is FragmentActivity and ListFragment class which is Fragment It all works perfect, but when I change screen orientation it calls again AsyncTask and reload all data. Here is the code for ListActivity class where I handle all logic: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_list); getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); getActionBar().setTitle("Dnevni horoskop"); if(findViewById(R.id.details_container) != null){ //Tablet mTwoPane = true; //Fragment stuff FragmentManager fm = getSupportFragmentManager(); FragmentTransaction ft = fm.beginTransaction(); DetailsFragment df = new DetailsFragment(); ft.add(R.id.details_container, df); ft.commit(); } pb = (ProgressBar) findViewById(R.id.pb_list); tvNoConnection = (TextView) findViewById(R.id.tv_no_internet); ivNoConnection = (ImageView) findViewById(R.id.iv_no_connection); list = (GridView) findViewById(R.id.gv_list); if(mTwoPane == true){ list.setNumColumns(1); //list.setPadding(16,16,16,16); } adapter = new CustomListAdapter(); list.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { pos = position; if(mTwoPane == false){ Bundle bundle = new Bundle(); bundle.putSerializable("zodiac", zodiacFeed); Intent i = new Intent(getApplicationContext(), DetailsActivity.class); i.putExtra("position", position); i.putExtras(bundle); startActivity(i); overridePendingTransition(R.anim.right_in, R.anim.right_out); } else if(mTwoPane == true){ DetailsFragment fragment = (DetailsFragment) getSupportFragmentManager().findFragmentById(R.id.details_container); fragment.setHoroscopeText(zodiacFeed.getItem(position).getText()); fragment.setLargeImage(zodiacFeed.getItem(position).getLargeImage()); fragment.setSign("Dnevni horoskop - "+zodiacFeed.getItem(position).getName()); fragment.setSignDuration(zodiacFeed.getItem(position).getDuration()); // inflate menu from xml /*if(menu != null){ MenuItem item = menu.findItem(R.id.share); Toast.makeText(getApplicationContext(), item.getTitle().toString(), Toast.LENGTH_SHORT).show(); }*/ } } }); if(!Utils.isConnected(getApplicationContext())){ pb.setVisibility(View.GONE); tvNoConnection.setVisibility(View.VISIBLE); ivNoConnection.setVisibility(View.VISIBLE); } //Calling AsyncTask to load data Log.d("TAG", "loading"); HoroscopeAsyncTask task = new HoroscopeAsyncTask(pb); task.execute(); } @Override public void onConfigurationChanged(Configuration newConfig) { // TODO Auto-generated method stub super.onConfigurationChanged(newConfig); } class CustomListAdapter extends BaseAdapter { private LayoutInflater layoutInflater; public CustomListAdapter() { layoutInflater = (LayoutInflater) getBaseContext().getSystemService( Context.LAYOUT_INFLATER_SERVICE); } public int getCount() { // TODO Auto-generated method stub // Set the total list item count return names.length; } public Object getItem(int arg0) { // TODO Auto-generated method stub return null; } public long getItemId(int arg0) { // TODO Auto-generated method stub return 0; } public View getView(int position, View convertView, ViewGroup parent) { // Inflate the item layout and set the views View listItem = convertView; int pos = position; zodiacItem = zodiacList.get(pos); if (listItem == null && mTwoPane == false) { listItem = layoutInflater.inflate(R.layout.list_item, null); } else if(mTwoPane == true){ listItem = layoutInflater.inflate(R.layout.tablet_list_item, null); } // Initialize the views in the layout ImageView iv = (ImageView) listItem.findViewById(R.id.iv_horoscope); iv.setScaleType(ScaleType.CENTER_CROP); TextView tvName = (TextView) listItem.findViewById(R.id.tv_zodiac_name); TextView tvDuration = (TextView) listItem.findViewById(R.id.tv_duration); iv.setImageResource(zodiacItem.getImage()); tvName.setText(zodiacItem.getName()); tvDuration.setText(zodiacItem.getDuration()); Animation animation = AnimationUtils.loadAnimation(getBaseContext(), R.anim.push_up); listItem.startAnimation(animation); animation = null; return listItem; } } private void getHoroscope() { String urlString = "http://balkanandroid.com/download/horoskop/examples/dnevnihoroskop.php"; try { HttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost(urlString); HttpResponse response = client.execute(post); resEntity = response.getEntity(); response_str = EntityUtils.toString(resEntity); if (resEntity != null) { Log.i("RESPONSE", response_str); runOnUiThread(new Runnable() { public void run() { try { Log.d("TAG", "Response from server : n " + response_str); } catch (Exception e) { e.printStackTrace(); } } }); } } catch (Exception ex) { Log.e("TAG", "error: " + ex.getMessage(), ex); } } private class HoroscopeAsyncTask extends AsyncTask<String, Void, Void> { public HoroscopeAsyncTask(ProgressBar pb1){ pb = pb1; } @Override protected void onPreExecute() { pb.setVisibility(View.VISIBLE); super.onPreExecute(); } @Override protected Void doInBackground(String... params) { getHoroscope(); try { Log.d("TAG", "test u try"); JSONObject jsonObject = new JSONObject(response_str); JSONArray jsonArray = jsonObject.getJSONArray("horoscope"); for(int i=0;i<jsonArray.length();i++){ Log.d("TAG", "test u for"); JSONObject horoscopeObj = jsonArray.getJSONObject(i); String horoscopeSign = horoscopeObj.getString("name_sign"); String horoscopeText = horoscopeObj.getString("txt_hrs"); zodiacItem = new ZodiacItem(horoscopeSign, horoscopeText, duration[i], images[i], largeImages[i]); zodiacList.add(zodiacItem); zodiacFeed.addItem(zodiacItem); //Treba u POJO klasu ubaciti sve. Log.d("TAG", "ZNAK: "+zodiacItem.getName()+" HOROSKOP: "+zodiacItem.getText()); } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); Log.e("TAG", "error: " + e.getMessage(), e); } return null; } @Override protected void onPostExecute(Void result) { pb.setVisibility(View.GONE); list.setAdapter(adapter); adapter.notifyDataSetChanged(); super.onPostExecute(result); } } Here is the code for ListFragment class: public class ListFragment extends Fragment { @Override public void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub // Retain this fragment across configuration changes. setRetainInstance(true); super.onCreate(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // TODO Auto-generated method stub View view = inflater.inflate(R.layout.fragment_list, container, false); return view; } }

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• Strange (Undefined?) Behavior of Free in C

  - by Chris Cirefice

  This is really strange... and I can't debug it (tried for about two hours, debugger starts going haywire after a while...). Anyway, I'm trying to do something really simple: Free an array of strings. The array is in the form: char **myStrings. The array elements are initialized as: myString[index] = malloc(strlen(word)); myString[index] = word; and I'm calling a function like this: free_memory(myStrings, size); where size is the length of the array (I know this is not the problem, I tested it extensively and everything except this function is working). free_memory looks like this: void free_memory(char **list, int size) { for (int i = 0; i < size; i ++) { free(list[i]); } free(list); } Now here comes the weird part. if (size> strlen(list[i])) then the program crashes. For example, imagine that I have a list of strings that looks something like this: myStrings[0] = "Some"; myStrings[1] = "random"; myStrings[2] = "strings"; And thus the length of this array is 3. If I pass this to my free_memory function, strlen(myStrings[0]) > 3 (4 3), and the program crashes. However, if I change myStrings[0] to be "So" instead, then strlen(myStrings[0]) < 3 (2 < 3) and the program does not crash. So it seems to me that free(list[i]) is actually going through the char[] that is at that location and trying to free each character, which I imagine is undefined behavior. The only reason I say this is because I can play around with the size of the first element of myStrings and make the program crash whenever I feel like it, so I'm assuming that this is the problem area. Note: I did try to debug this by stepping through the function that calls free_memory, noting any weird values and such, but the moment I step into the free_memory function, the debugger crashes, so I'm not really sure what is going on. Nothing is out of the ordinary until I enter the function, then the world explodes. Another note: I also posted the shortened version of the source for this program (not too long; Pastebin) here. I am compiling on MinGW with the c99 flag on. PS - I just thought of this. I am indeed passing numUniqueWords to the free function, and I know that this does not actually free the entire piece of memory that I allocated. I've called it both ways, that's not the issue. And I left it how I did because that is the way that I will be calling it after I get it to work in the first place, I need to revise some of my logic in that function. Source, as per request (on-site): #include <stdio.h> #include <string.h> #include <ctype.h> #include <stdlib.h> #include "words.h" int getNumUniqueWords(char text[], int size); int main(int argc, char* argv[]) { setvbuf(stdout, NULL, 4, _IONBF); // For Eclipse... stupid bug. --> does NOT affect the program, just the output to console! int nbr_words; char text[] = "Some - \"text, a stdin\". We'll have! also repeat? We'll also have a repeat!"; int length = sizeof(text); nbr_words = getNumUniqueWords(text, length); return 0; } void free_memory(char **list, int size) { for (int i = 0; i < size; i ++) { // You can see that printing the values is fine, as long as free is not called. // When free is called, the program will crash if (size > strlen(list[i])) //printf("Wanna free value %d w/len of %d: %s\n", i, strlen(list[i]), list[i]); free(list[i]); } free(list); } int getNumUniqueWords(char text[], int length) { int numTotalWords = 0; char *word; printf("Length: %d characters\n", length); char totalWords[length]; strcpy(totalWords, text); word = strtok(totalWords, " ,.-!?()\"0123456789"); while (word != NULL) { numTotalWords ++; printf("%s\n", word); word = strtok(NULL, " ,.-!?()\"0123456789"); } printf("Looks like we counted %d total words\n\n", numTotalWords); char *uniqueWords[numTotalWords]; char *tempWord; int wordAlreadyExists = 0; int numUniqueWords = 0; char totalWordsCopy[length]; strcpy(totalWordsCopy, text); for (int i = 0; i < numTotalWords; i++) { uniqueWords[i] = NULL; } // Tokenize until all the text is consumed. word = strtok(totalWordsCopy, " ,.-!?()\"0123456789"); while (word != NULL) { // Look through the word list for the current token. for (int j = 0; j < numTotalWords; j ++) { // Just for clarity, no real meaning. tempWord = uniqueWords[j]; // The word list is either empty or the current token is not in the list. if (tempWord == NULL) { break; } //printf("Comparing (%s) with (%s)\n", tempWord, word); // If the current token is the same as the current element in the word list, mark and break if (strcmp(tempWord, word) == 0) { printf("\nDuplicate: (%s)\n\n", word); wordAlreadyExists = 1; break; } } // Word does not exist, add it to the array. if (!wordAlreadyExists) { uniqueWords[numUniqueWords] = malloc(strlen(word)); uniqueWords[numUniqueWords] = word; numUniqueWords ++; printf("Unique: %s\n", word); } // Reset flags and continue. wordAlreadyExists = 0; word = strtok(NULL, " ,.-!?()\"0123456789"); } // Print out the array just for funsies - make sure it's working properly. for (int x = 0; x <numUniqueWords; x++) { printf("Unique list %d: %s\n", x, uniqueWords[x]); } printf("\nNumber of unique words: %d\n\n", numUniqueWords); // Right below is where things start to suck. free_memory(uniqueWords, numUniqueWords); return numUniqueWords; }

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• How do I search the MediaStore for a specific directory instead of entire external storage?

  - by Nick Lopez

  In my app I have an option that allows users to browse for audio files on their phone to add to the app. I am having trouble however with creating a faster way of processing the query code. Currently it searches the entire external storage and causes the phone to prompt a force close/wait warning. I would like to take the code I have posted below and make it more efficient by either searching in a specific folder on the phone or by streamlining the process to make the file search quicker. I am not sure how to do this however. Thanks! public class BrowseActivity extends DashboardActivity implements OnClickListener, OnItemClickListener { private List<Sound> soundsInDevice = new ArrayList<Sound>(); private List<Sound> checkedList; private ListView browsedList; private BrowserSoundAdapter adapter; private long categoryId; private Category category; private String currentCategoryName; private String description; // private Category newCategory ; private Button doneButton; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_browse); checkedList = new ArrayList<Sound>(); browsedList = (ListView) findViewById(android.R.id.list); doneButton = (Button) findViewById(R.id.doneButton); soundsInDevice = getMediaSounds(); if (soundsInDevice.size() > 0) { adapter = new BrowserSoundAdapter(this, R.id.browseSoundName, soundsInDevice); } else { Toast.makeText(getApplicationContext(), getString(R.string.no_sounds_available), Toast.LENGTH_SHORT) .show(); } browsedList.setAdapter(adapter); browsedList.setOnItemClickListener(this); doneButton.setOnClickListener(this); } private List<Sound> getMediaSounds() { List<Sound> mediaSoundList = new ArrayList<Sound>(); ContentResolver cr = getContentResolver(); String[] projection = {MediaStore.Audio.Media._ID, MediaStore.Audio.Media.DISPLAY_NAME, MediaStore.Audio.Media.TITLE, MediaStore.Audio.Media.DATA, MediaStore.Audio.Media.DURATION}; final Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; Log.v("MediaStore.Audio.Media.EXTERNAL_CONTENT_URI", "" + uri); final Cursor cursor = cr.query(uri, projection, null, null, null); int n = cursor.getCount(); Log.v("count", "" + n); if (cursor.moveToFirst()) { do { String soundName = cursor .getString(cursor .getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME)); Log.v("soundName", "" + soundName); String title = cursor .getString(cursor .getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE)); Log.v("title", "" + title); String path = cursor.getString(cursor .getColumnIndexOrThrow(MediaStore.Audio.Media.DATA)); Log.v("path", "" + path); Sound browsedSound = new Sound(title, path, false, false, false, false, 0); Log.v("browsedSound", "" + browsedSound); mediaSoundList.add(browsedSound); Log.v("mediaSoundList", "" + mediaSoundList.toString()); } while (cursor.moveToNext()); } return mediaSoundList; } public class BrowserSoundAdapter extends ArrayAdapter<Sound> { public BrowserSoundAdapter(Context context, int textViewResourceId, List<Sound> objects) { super(context, textViewResourceId, objects); } @Override public View getView(final int position, View convertView, ViewGroup parent) { ViewHolder viewHolder; View view = convertView; LayoutInflater inflater = getLayoutInflater(); if (view == null) { view = inflater.inflate(R.layout.list_item_browse, null); viewHolder = new ViewHolder(); viewHolder.soundNameTextView = (TextView) view .findViewById(R.id.browseSoundName); viewHolder.pathTextView = (TextView) view .findViewById(R.id.browseSoundPath); viewHolder.checkToAddSound = (CheckBox) view .findViewById(R.id.browse_checkbox); view.setTag(viewHolder); } else { viewHolder = (ViewHolder) view.getTag(); } final Sound sound = soundsInDevice.get(position); if (sound.isCheckedState()) { viewHolder.checkToAddSound.setChecked(true); } else { viewHolder.checkToAddSound.setChecked(false); } viewHolder.soundNameTextView.setText(sound.getName()); viewHolder.pathTextView.setText(sound.getUri()); viewHolder.checkToAddSound .setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { CheckBox cb = (CheckBox) v .findViewById(R.id.browse_checkbox); boolean checked = cb.isChecked(); boolean newValue = checked; updateView(position, newValue); doneButtonStatus(checkedList.size()); } }); return view; } } // Adapter view holder class private class ViewHolder { private TextView soundNameTextView; private TextView pathTextView; private CheckBox checkToAddSound; } // done button On Click @Override public void onClick(View view) { boolean status = getIntent().getBooleanExtra("FromAddCat", false); Log.v("for add category","enters in if"); if(status){ Log.v("for add category","enters in if1"); currentCategoryName = getIntent().getStringExtra("categoryName"); description = getIntent().getStringExtra("description"); boolean existCategory = SQLiteHelper.getCategoryStatus(currentCategoryName); if (!existCategory) { category = new Category(currentCategoryName, description, false); category.insert(); category.update(); Log.v("for add category","enters in if2"); } }else{ categoryId = getIntent().getLongExtra("categoryId",-1); category = SQLiteHelper.getCategory(categoryId); } for (Sound checkedsound : checkedList) { checkedsound.setCheckedState(false); checkedsound.insert(); category.getSounds().add(checkedsound); final Intent intent = new Intent(this, CategoriesActivity.class); finish(); startActivity(intent); } } @Override public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) { boolean checked = true; boolean newValue = false; CheckBox cb = (CheckBox) view.findViewById(R.id.browse_checkbox); if (cb.isChecked()) { cb.setChecked(!checked); newValue = !checked; } else { cb.setChecked(checked); newValue = checked; } updateView(position, newValue); doneButtonStatus(checkedList.size()); } private void doneButtonStatus(int size) { if (size > 0) { doneButton.setEnabled(true); doneButton.setBackgroundResource(R.drawable.done_button_drawable); } else { doneButton.setEnabled(false); doneButton.setBackgroundResource(R.drawable.done_btn_disabled); } } private void updateView(int index, boolean newValue) { System.out.println(newValue); Sound sound = soundsInDevice.get(index); if (newValue == true) { checkedList.add(sound); sound.setCheckedState(newValue); } else { checkedList.remove(sound); sound.setCheckedState(newValue); } } }

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• WebLogic stuck thread protection

  - by doublep

  By default WebLogic kills stuck threads after 15 min (600 s), this is controlled by StuckThreadMaxTime parameter. However, I cannot find more details on how exactly "stuckness" is defined. Specifically: What is the point at which 15 min countdown begins. Request processing start? Last wait()-like method? Something else? Does this apply only to request-processing threads or to all threads? I.e. can a request-processing thread "escape" this protection by spawning a worker thread for a long task? Especially, can it delegate response writing to such a worker without 15 min countdown? My usecase is download of huge files through a permission system. Since a user needs to be authenticated and have permissions to view a file, I cannot (or at least don't know how) leave this to a simple HTTP server, e.g. Apache. And because files can be huge, download could (at least in theory) take more than 15 minutes.

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• FreeBSD performance tuning. Sysctls, loader.conf, kernel

  - by SaveTheRbtz

  I wanted to share knowledge of tuning FreeBSD via sysctl.conf/loader.conf/KENCONF. It was initially based on Igor Sysoev's (author of nginx) presentation about FreeBSD tuning up to 100,000-200,000 active connections. Tunings are for FreeBSD-CURRENT. Since 7.2 amd64 some of them are tuned well by default. Prior 7.0 some of them are boot only (set via /boot/loader.conf) or does not exist at all. sysctl.conf: # No zero mapping feature # May break wine # (There are also reports about broken samba3) #security.bsd.map_at_zero=0 # If you have really busy webserver with apache13 you may run out of processes #kern.maxproc=10000 # Same for servers with apache2 / Pound #kern.threads.max_threads_per_proc=4096 # Max. backlog size kern.ipc.somaxconn=4096 # Shared memory // 7.2+ can use shared memory > 2Gb kern.ipc.shmmax=2147483648 # Sockets kern.ipc.maxsockets=204800 # Can cause this on older kernels: # http://old.nabble.com/Significant-performance-regression-for-increased-maxsockbuf-on-8.0-RELEASE-tt26745981.html#a26745981 ) kern.ipc.maxsockbuf=10485760 # Mbuf 2k clusters (on amd64 7.2+ 25600 is default) # For such high value vm.kmem_size must be increased to 3G kern.ipc.nmbclusters=262144 # Jumbo pagesize(_SC_PAGESIZE) clusters # Used as general packet storage for jumbo frames # can be monitored via `netstat -m` #kern.ipc.nmbjumbop=262144 # Jumbo 9k/16k clusters # If you are using them #kern.ipc.nmbjumbo9=65536 #kern.ipc.nmbjumbo16=32768 # For lower latency you can decrease scheduler's maximum time slice # default: stathz/10 (~ 13) #kern.sched.slice=1 # Increase max command-line length showed in `ps` (e.g for Tomcat/Java) # Default is PAGE_SIZE / 16 or 256 on x86 # This avoids commands to be presented as [executable] in `ps` # For more info see: http://www.freebsd.org/cgi/query-pr.cgi?pr=120749 kern.ps_arg_cache_limit=4096 # Every socket is a file, so increase them kern.maxfiles=204800 kern.maxfilesperproc=200000 kern.maxvnodes=200000 # On some systems HPET is almost 2 times faster than default ACPI-fast # Useful on systems with lots of clock_gettime / gettimeofday calls # See http://old.nabble.com/ACPI-fast-default-timecounter,-but-HPET-83--faster-td23248172.html # After revision 222222 HPET became default: http://svnweb.freebsd.org/base?view=revision&revision=222222 kern.timecounter.hardware=HPET # Small receive space, only usable on http-server, on file server this # should be increased to 65535 or even more #net.inet.tcp.recvspace=8192 # This is useful on Fat-Long-Pipes #net.inet.tcp.recvbuf_max=10485760 #net.inet.tcp.recvbuf_inc=65535 # Small send space is useful for http servers that serve small files # Autotuned since 7.x net.inet.tcp.sendspace=16384 # This is useful on Fat-Long-Pipes #net.inet.tcp.sendbuf_max=10485760 #net.inet.tcp.sendbuf_inc=65535 # Turn off receive autotuning # You can play with it. #net.inet.tcp.recvbuf_auto=0 #net.inet.tcp.sendbuf_auto=0 # This should be enabled if you going to use big spaces (>64k) # Also timestamp field is useful when using syncookies net.inet.tcp.rfc1323=1 # Turn this off on high-speed, lossless connections (LAN 1Gbit+) # If you set it there is no need in TCP_NODELAY sockopt (see man tcp) net.inet.tcp.delayed_ack=0 # This feature is useful if you are serving data over modems, Gigabit Ethernet, # or even high speed WAN links (or any other link with a high bandwidth delay product), # especially if you are also using window scaling or have configured a large send window. # Automatically disables on small RTT ( http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/tcp_subr.c?#rev1.237 ) # This sysctl was removed in 10-CURRENT: # See: http://www.mail-archive.com/[email protected]/msg06178.html #net.inet.tcp.inflight.enable=0 # TCP slowstart algorithm tunings # We assuming we have very fast clients #net.inet.tcp.slowstart_flightsize=100 #net.inet.tcp.local_slowstart_flightsize=100 # Disable randomizing of ports to avoid false RST # Before usage check SA here www.bsdcan.org/2006/papers/ImprovingTCPIP.pdf # (it's also says that port randomization auto-disables at some conn.rates, but I didn't checked it thou) #net.inet.ip.portrange.randomized=0 # Increase portrange # For outgoing connections only. Good for seed-boxes and ftp servers. net.inet.ip.portrange.first=1024 net.inet.ip.portrange.last=65535 # # stops route cache degregation during a high-bandwidth flood # http://www.freebsd.org/doc/en/books/handbook/securing-freebsd.html #net.inet.ip.rtexpire=2 net.inet.ip.rtminexpire=2 net.inet.ip.rtmaxcache=1024 # Security net.inet.ip.redirect=0 net.inet.ip.sourceroute=0 net.inet.ip.accept_sourceroute=0 net.inet.icmp.maskrepl=0 net.inet.icmp.log_redirect=0 net.inet.icmp.drop_redirect=1 net.inet.tcp.drop_synfin=1 # # There is also good example of sysctl.conf with comments: # http://www.thern.org/projects/sysctl.conf # # icmp may NOT rst, helpful for those pesky spoofed # icmp/udp floods that end up taking up your outgoing # bandwidth/ifqueue due to all that outgoing RST traffic. # #net.inet.tcp.icmp_may_rst=0 # Security net.inet.udp.blackhole=1 net.inet.tcp.blackhole=2 # IPv6 Security # For more info see http://www.fosslc.org/drupal/content/security-implications-ipv6 # Disable Node info replies # To see this vulnerability in action run `ping6 -a sglAac ::1` or `ping6 -w ::1` on unprotected node net.inet6.icmp6.nodeinfo=0 # Turn on IPv6 privacy extensions # For more info see proposal http://unix.derkeiler.com/Mailing-Lists/FreeBSD/net/2008-06/msg00103.html net.inet6.ip6.use_tempaddr=1 net.inet6.ip6.prefer_tempaddr=1 # Disable ICMP redirect net.inet6.icmp6.rediraccept=0 # Disable acceptation of RA and auto linklocal generation if you don't use them #net.inet6.ip6.accept_rtadv=0 #net.inet6.ip6.auto_linklocal=0 # Increases default TTL, sometimes useful # Default is 64 net.inet.ip.ttl=128 # Lessen max segment life to conserve resources # ACK waiting time in miliseconds # (default: 30000. RFC from 1979 recommends 120000) net.inet.tcp.msl=5000 # Max bumber of timewait sockets net.inet.tcp.maxtcptw=200000 # Don't use tw on local connections # As of 15 Apr 2009. Igor Sysoev says that nolocaltimewait has some buggy realization. # So disable it or now till get fixed #net.inet.tcp.nolocaltimewait=1 # FIN_WAIT_2 state fast recycle net.inet.tcp.fast_finwait2_recycle=1 # Time before tcp keepalive probe is sent # default is 2 hours (7200000) #net.inet.tcp.keepidle=60000 # Should be increased until net.inet.ip.intr_queue_drops is zero net.inet.ip.intr_queue_maxlen=4096 # Interrupt handling via multiple CPU, but with context switch. # You can play with it. Default is 1; #net.isr.direct=0 # This is for routers only #net.inet.ip.forwarding=1 #net.inet.ip.fastforwarding=1 # This speed ups dummynet when channel isn't saturated net.inet.ip.dummynet.io_fast=1 # Increase dummynet(4) hash #net.inet.ip.dummynet.hash_size=2048 #net.inet.ip.dummynet.max_chain_len # Should be increased when you have A LOT of files on server # (Increase until vfs.ufs.dirhash_mem becomes lower) vfs.ufs.dirhash_maxmem=67108864 # Note from commit http://svn.freebsd.org/base/head@211031 : # For systems with RAID volumes and/or virtualization envirnments, where # read performance is very important, increasing this sysctl tunable to 32 # or even more will demonstratively yield additional performance benefits. vfs.read_max=32 # Explicit Congestion Notification (see http://en.wikipedia.org/wiki/Explicit_Congestion_Notification) net.inet.tcp.ecn.enable=1 # Flowtable - flow caching mechanism # Useful for routers #net.inet.flowtable.enable=1 #net.inet.flowtable.nmbflows=65535 # Extreme polling tuning #kern.polling.burst_max=1000 #kern.polling.each_burst=1000 #kern.polling.reg_frac=100 #kern.polling.user_frac=1 #kern.polling.idle_poll=0 # IPFW dynamic rules and timeouts tuning # Increase dyn_buckets till net.inet.ip.fw.curr_dyn_buckets is lower net.inet.ip.fw.dyn_buckets=65536 net.inet.ip.fw.dyn_max=65536 net.inet.ip.fw.dyn_ack_lifetime=120 net.inet.ip.fw.dyn_syn_lifetime=10 net.inet.ip.fw.dyn_fin_lifetime=2 net.inet.ip.fw.dyn_short_lifetime=10 # Make packets pass firewall only once when using dummynet # i.e. packets going thru pipe are passing out from firewall with accept #net.inet.ip.fw.one_pass=1 # shm_use_phys Wires all shared pages, making them unswappable # Use this to lessen Virtual Memory Manager's work when using Shared Mem. # Useful for databases #kern.ipc.shm_use_phys=1 # ZFS # Enable prefetch. Useful for sequential load type i.e fileserver. # FreeBSD sets vfs.zfs.prefetch_disable to 1 on any i386 systems and # on any amd64 systems with less than 4GB of avaiable memory # For additional info check this nabble thread http://old.nabble.com/Samba-read-speed-performance-tuning-td27964534.html #vfs.zfs.prefetch_disable=0 # On highload servers you may notice following message in dmesg: # "Approaching the limit on PV entries, consider increasing either the # vm.pmap.shpgperproc or the vm.pmap.pv_entry_max tunable" vm.pmap.shpgperproc=2048 loader.conf: # Accept filters for data, http and DNS requests # Useful when your software uses select() instead of kevent/kqueue or when you under DDoS # DNS accf available on 8.0+ accf_data_load="YES" accf_http_load="YES" accf_dns_load="YES" # Async IO system calls aio_load="YES" # Linux specific devices in /dev # As for 8.1 it only /dev/full #lindev_load="YES" # Adds NCQ support in FreeBSD # WARNING! all ad[0-9]+ devices will be renamed to ada[0-9]+ # 8.0+ only #ahci_load="YES" #siis_load="YES" # FreeBSD 8.2+ # New Congestion Control for FreeBSD # http://caia.swin.edu.au/urp/newtcp/tools/cc_chd-readme-0.1.txt # http://www.ietf.org/proceedings/78/slides/iccrg-5.pdf # Initial merge commit message http://www.mail-archive.com/[email protected]/msg31410.html #cc_chd_load="YES" # Increase kernel memory size to 3G. # # Use ONLY if you have KVA_PAGES in kernel configuration, and you have more than 3G RAM # Otherwise panic will happen on next reboot! # # It's required for high buffer sizes: kern.ipc.nmbjumbop, kern.ipc.nmbclusters, etc # Useful on highload stateful firewalls, proxies or ZFS fileservers # (FreeBSD 7.2+ amd64 users: Check that current value is lower!) #vm.kmem_size="3G" # If your server has lots of swap (>4Gb) you should increase following value # according to http://lists.freebsd.org/pipermail/freebsd-hackers/2009-October/029616.html # Otherwise you'll be getting errors # "kernel: swap zone exhausted, increase kern.maxswzone" # kern.maxswzone="256M" # Older versions of FreeBSD can't tune maxfiles on the fly #kern.maxfiles="200000" # Useful for databases # Sets maximum data size to 1G # (FreeBSD 7.2+ amd64 users: Check that current value is lower!) #kern.maxdsiz="1G" # Maximum buffer size(vfs.maxbufspace) # You can check current one via vfs.bufspace # Should be lowered/upped depending on server's load-type # Usually decreased to preserve kmem # (default is 10% of mem) #kern.maxbcache="512M" # Sendfile buffers # For i386 only #kern.ipc.nsfbufs=10240 # FreeBSD 9+ # HPET "legacy route" support. It should allow HPET to work per-CPU # See http://www.mail-archive.com/[email protected]/msg03603.html #hint.atrtc.0.clock=0 #hint.attimer.0.clock=0 #hint.hpet.0.legacy_route=1 # syncache Hash table tuning net.inet.tcp.syncache.hashsize=1024 net.inet.tcp.syncache.bucketlimit=512 net.inet.tcp.syncache.cachelimit=65536 # Increased hostcache # Later host cache can be viewed via net.inet.tcp.hostcache.list hidden sysctl # Very useful for it's RTT RTTVAR # Must be power of two net.inet.tcp.hostcache.hashsize=65536 # hashsize * bucketlimit (which is 30 by default) # It allocates 255Mb (1966080*136) of RAM net.inet.tcp.hostcache.cachelimit=1966080 # TCP control-block Hash table tuning net.inet.tcp.tcbhashsize=4096 # Disable ipfw deny all # Should be uncommented when there is a chance that # kernel and ipfw binary may be out-of sync on next reboot #net.inet.ip.fw.default_to_accept=1 # # SIFTR (Statistical Information For TCP Research) is a kernel module that # logs a range of statistics on active TCP connections to a log file. # See prerelease notes http://groups.google.com/group/mailing.freebsd.current/browse_thread/thread/b4c18be6cdce76e4 # and man 4 sitfr #siftr_load="YES" # Enable superpages, for 7.2+ only # Also read http://lists.freebsd.org/pipermail/freebsd-hackers/2009-November/030094.html vm.pmap.pg_ps_enabled=1 # Usefull if you are using Intel-Gigabit NIC #hw.em.rxd=4096 #hw.em.txd=4096 #hw.em.rx_process_limit="-1" # Also if you have ALOT interrupts on NIC - play with following parameters # NOTE: You should set them for every NIC #dev.em.0.rx_int_delay: 250 #dev.em.0.tx_int_delay: 250 #dev.em.0.rx_abs_int_delay: 250 #dev.em.0.tx_abs_int_delay: 250 # There is also multithreaded version of em/igb drivers can be found here: # http://people.yandex-team.ru/~wawa/ # # for additional em monitoring and statistics use # sysctl dev.em.0.stats=1 ; dmesg # sysctl dev.em.0.debug=1 ; dmesg # Also after r209242 (-CURRENT) there is a separate sysctl for each stat variable; # Same tunings for igb #hw.igb.rxd=4096 #hw.igb.txd=4096 #hw.igb.rx_process_limit=100 # Some useful netisr tunables. See sysctl net.isr #net.isr.maxthreads=4 #net.isr.defaultqlimit=4096 #net.isr.maxqlimit: 10240 # Bind netisr threads to CPUs #net.isr.bindthreads=1 # # FreeBSD 9.x+ # Increase interface send queue length # See commit message http://svn.freebsd.org/viewvc/base?view=revision&revision=207554 #net.link.ifqmaxlen=1024 # Nicer boot logo =) loader_logo="beastie" And finally here is KERNCONF: # Just some of them, see also # cat /sys/{i386,amd64,}/conf/NOTES # This one useful only on i386 #options KVA_PAGES=512 # You can play with HZ in environments with high interrupt rate (default is 1000) # 100 is for my notebook to prolong it's battery life #options HZ=100 # Polling is goot on network loads with high packet rates and low-end NICs # NB! Do not enable it if you want more than one netisr thread #options DEVICE_POLLING # Eliminate datacopy on socket read-write # To take advantage with zero copy sockets you should have an MTU >= 4k # This req. is only for receiving data. # Read more in man zero_copy_sockets # Also this epic thread on kernel trap: # http://kerneltrap.org/node/6506 # Here Linus says that "anybody that does it that way (FreeBSD) is totally incompetent" #options ZERO_COPY_SOCKETS # Support TCP sign. Used for IPSec options TCP_SIGNATURE # There was stackoverflow found in KAME IPSec stack: # See http://secunia.com/advisories/43995/ # For quick workaround you can use `ipfw add deny proto ipcomp` options IPSEC # This ones can be loaded as modules. They described in loader.conf section #options ACCEPT_FILTER_DATA #options ACCEPT_FILTER_HTTP # Adding ipfw, also can be loaded as modules options IPFIREWALL # On 8.1+ you can disable verbose to see blocked packets on ipfw0 interface. # Also there is no point in compiling verbose into the kernel, because # now there is net.inet.ip.fw.verbose tunable. #options IPFIREWALL_VERBOSE #options IPFIREWALL_VERBOSE_LIMIT=10 options IPFIREWALL_FORWARD # Adding kernel NAT options IPFIREWALL_NAT options LIBALIAS # Traffic shaping options DUMMYNET # Divert, i.e. for userspace NAT options IPDIVERT # This is for OpenBSD's pf firewall device pf device pflog # pf's QoS - ALTQ options ALTQ options ALTQ_CBQ # Class Bases Queuing (CBQ) options ALTQ_RED # Random Early Detection (RED) options ALTQ_RIO # RED In/Out options ALTQ_HFSC # Hierarchical Packet Scheduler (HFSC) options ALTQ_PRIQ # Priority Queuing (PRIQ) options ALTQ_NOPCC # Required for SMP build # Pretty console # Manual can be found here http://forums.freebsd.org/showthread.php?t=6134 #options VESA #options SC_PIXEL_MODE # Disable reboot on Ctrl Alt Del #options SC_DISABLE_REBOOT # Change normal|kernel messages color options SC_NORM_ATTR=(FG_GREEN|BG_BLACK) options SC_KERNEL_CONS_ATTR=(FG_YELLOW|BG_BLACK) # More scroll space options SC_HISTORY_SIZE=8192 # Adding hardware crypto device device crypto device cryptodev # Useful network interfaces device vlan device tap #Virtual Ethernet driver device gre #IP over IP tunneling device if_bridge #Bridge interface device pfsync #synchronization interface for PF device carp #Common Address Redundancy Protocol device enc #IPsec interface device lagg #Link aggregation interface device stf #IPv4-IPv6 port # Also for my notebook, but may be used with Opteron device amdtemp # Same for Intel processors device coretemp # man 4 cpuctl device cpuctl # CPU control pseudo-device # Support for ECMP. More than one route for destination # Works even with default route so one can use it as LB for two ISP # For now code is unstable and panics (panic: rtfree 2) on route deletions. #options RADIX_MPATH # Multicast routing #options MROUTING #options PIM # Debug & DTrace options KDB # Kernel debugger related code options KDB_TRACE # Print a stack trace for a panic options KDTRACE_FRAME # amd64-only(?) options KDTRACE_HOOKS # all architectures - enable general DTrace hooks #options DDB #options DDB_CTF # all architectures - kernel ELF linker loads CTF data # Adaptive spining in lockmgr (8.x+) # See http://www.mail-archive.com/[email protected]/msg10782.html options ADAPTIVE_LOCKMGRS # UTF-8 in console (8.x+) #options TEKEN_UTF8 # FreeBSD 8.1+ # Deadlock resolver thread # For additional information see http://www.mail-archive.com/[email protected]/msg18124.html # (FYI: "resolution" is panic so use with caution) #options DEADLKRES # Increase maximum size of Raw I/O and sendfile(2) readahead #options MAXPHYS=(1024*1024) #options MAXBSIZE=(1024*1024) # For scheduler debug enable following option. # Debug will be available via `kern.sched.stats` sysctl # For more information see http://svnweb.freebsd.org/base/head/sys/conf/NOTES?view=markup #options SCHED_STATS If you are tuning network for maximum performance you may wish to play with ifconfig options like: # You can list all capabilities via `ifconfig -m` ifconfig [-]rxcsum [-]txcsum [-]tso [-]lro mtu In case you've enabled DDB in kernel config, you should edit your /etc/ddb.conf and add something like this to enable automatic reboot (and textdump as bonus): script kdb.enter.panic=textdump set; capture on; show pcpu; bt; ps; alltrace; capture off; call doadump; reset script kdb.enter.default=textdump set; capture on; bt; ps; capture off; call doadump; reset And do not forget to add ddb_enable="YES" to /etc/rc.conf Since FreeBSD 9 you can select to enable/disable flowcontrol on your NIC: # See http://en.wikipedia.org/wiki/Ethernet_flow_control and # http://www.mail-archive.com/[email protected]/msg07927.html for additional info ifconfig bge0 media auto mediaopt flowcontrol PS. Also most of FreeBSD's limits can be monitored by # vmstat -z and # limits PPS. variety of network counters can be monitored via # netstat -s In FreeBSD-9 netstat's -Q option appeared, try following command to display netisr stats # netstat -Q PPPS. also see # man 7 tuning PPPPS. I wanted to thank FreeBSD community, especially author of nginx - Igor Sysoev, nginx-ru@ and FreeBSD-performance@ mailing lists for providing useful information about FreeBSD tuning. FreeBSD WIP * Whats cooking for FreeBSD 7? * Whats cooking for FreeBSD 8? * Whats cooking for FreeBSD 9? So here is the question: What tunings are you using on yours FreeBSD servers? You can also post your /etc/sysctl.conf, /boot/loader.conf, kernel options, etc with description of its' meaning (do not copy-paste from sysctl -d). Don't forget to specify server type (web, smb, gateway, etc) Let's share experience!

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• SQL Server - Physical connection is not usable Error Code: 19

  - by Harry

  Having trouble working out this SqlException: A transport-level error has occurred when sending the request to the server. (provider: Session Provider, error: 19 - Physical connection is not usable) Any ideas what this is about? Couldn't get any hits on google or msdn on this one. The connection is MARS and Asynchronous in my own SQL pool. But don't get all excited about that - that is old code that has been stable for a long time! Exception details pasted below: System.Data.SqlClient.SqlException occurred Message=A transport-level error has occurred when sending the request to the server. (provider: Session Provider, error: 19 - Physical connection is not usable) Source=.Net SqlClient Data Provider ErrorCode=-2146232060 Class=20 LineNumber=0 Number=-1 Server=SERVER State=0 StackTrace: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() at System.Data.SqlClient.TdsParserStateObject.SNIWriteAsync(SNIHandle handle, SNIPacket packet, DbAsyncResult asyncResult) at System.Data.SqlClient.TdsParserStateObject.WriteSni() at System.Data.SqlClient.TdsParserStateObject.WritePacket(Byte flushMode) at System.Data.SqlClient.TdsParserStateObject.ExecuteFlush() at System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.BeginExecuteNonQuery(AsyncCallback callback, Object stateObject) at CrawlAbout.Library.SQL.SQLAdapter.<ExecuteNonQueryTask>d__12.MoveNext() in D:\Work\Projects\CrawlAbout.com 2.0\CrawlAbout.Library.SQL\SQLAdapter.cs:line 149 InnerException:

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• How to get jQuery EasyUI datagrid and treegrid to load in background?

  - by f1r3br4nd

  I am trying build a jQuery EasyUI datagrid or treegrid out of a large query. Apparently the database takes long enough to respond that I get the "a script on this page may be busy" popup. Moreover, the entire browser (Firefox) locks up while it's waiting. I thought the whole point of AJAX was to load stuff unobtrusively. I've looked through the tutorials and documentation for EasyUI but it's not clear to me how to force a datagrid to load in the background. There are some similar unanswered questions asked on the EasyUI forums. Do I need to override the loader property of datagrid? If so, does anybody know where I can get a non-obfuscated version of the default loader function so I can be sure I understand what it's supposed to do before I write my own? Also, if I need asynchronous datagrids and datatrees with sorting and filtering features, is jQuery EasyUI the wrong library for doing this simply and cleanly? Is there some alternative jQuery library people would recommend? Thank you.

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• PathTooLongException after migrating from ASP.NET MVC 1 to ASP.NET MVC 2

  - by admax

  I had updated my app from MVC 1 to MVC 2. After that some pages throws PathTooLongException: [PathTooLongException: The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.] System.IO.Path.SafeSetStackPointerValue(Char* buffer, Int32 index, Char value) +7493057 System.IO.Path.NormalizePathFast(String path, Boolean fullCheck) +387 System.IO.Path.NormalizePath(String path, Boolean fullCheck) +36 System.IO.Path.GetFullPathInternal(String path) +21 System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) +73 System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[] str, Boolean needFullPath) +278 System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) +87 System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String path) +65 System.Web.InternalSecurityPermissions.PathDiscovery(String path) +29 System.Web.HttpRequest.MapPath(VirtualPath virtualPath, VirtualPath baseVirtualDir, Boolean allowCrossAppMapping) +146 System.Web.HttpRequest.MapPath(VirtualPath virtualPath) +37 System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) +43 System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +28 System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +22 System.Web.Mvc.ViewPage.RenderView(ViewContext viewContext) +284 System.Web.Mvc.WebFormView.RenderViewPage(ViewContext context, ViewPage page) +82 System.Web.Mvc.WebFormView.Render(ViewContext viewContext, TextWriter writer) +85 System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +267 System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +10 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +320 System.Web.Mvc.Controller.ExecuteCore() +104 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +36 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7 System.Web.Mvc.<c_DisplayClass8.b_4() +34 System.Web.Mvc.Async.<c_DisplayClass1.b_0() +21 System.Web.Mvc.Async.<c__DisplayClass81.<BeginSynchronous>b__7(IAsyncResult _) +12 System.Web.Mvc.Async.WrappedAsyncResult1.End() +53 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +30 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +7 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8678910 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155 I know the issue with 260-character-url-lenght in ASP.NET, but my app works fine before update to ASP.NET MVC 2.0!

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• What is a good alternative to the WPF WebBrowser Control?

  - by VoidDweller

  I have an MDI WPF app that I need to add web content to. At first, great it looks like I have 2 options built into the framework the Frame control and the WebBrowser control. Given that this is an MDI app it doesn't take long to discover that neither of these will work. The WPF WebBrowser control wraps up the IE WebBrowser ActiveX Control which uses the Win32 graphics pipeline. The "Airspace" issue pretty much sums this up as "Sorry, the layouts will not play nice together". Yes, I have thought about taking snapshots of the web content rendering these and mapping the mouse and keyboard events back to the browser control, but I can't afford the performance penalty and I really don't have time to write and thoroughly test it. I have looked for third party controls, but so far I have only found Chris Cavanagh's WPF Chromium Web Browser control. Which wraps up Awesomium 1.5. Together these are very cool, they play nice with the WPF layouts. But they do not meet my performance requirements. They are VERY HEAVY on memory consumption and not to friendly with CPU usage either. Not to mention still quite buggy. I'll elaborate if you are interested. So, do any of you know of a stable performant WPF web browser control? Thanks.

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• java.lang.ClassCastException: java.lang.Integer cannot be cast to java.util.HashMap

  - by kongkea

  I've got this Error When I click listview to show full image size. how can i solve it? Error 11-20 10:27:47.039: D/AndroidRuntime(5078): Shutting down VM 11-20 10:27:47.039: W/dalvikvm(5078): threadid=1: thread exiting with uncaught exception (group=0x40c061f8) 11-20 10:27:47.047: E/AndroidRuntime(5078): FATAL EXCEPTION: main 11-20 10:27:47.047: E/AndroidRuntime(5078): java.lang.ClassCastException: java.lang.Integer cannot be cast to java.util.HashMap 11-20 10:27:47.047: E/AndroidRuntime(5078): at com.example.mylistview.MainActivity$1.onItemClick(MainActivity.java:103) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.widget.AdapterView.performItemClick(AdapterView.java:292) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.widget.AbsListView.performItemClick(AbsListView.java:1173) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2701) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.widget.AbsListView$1.run(AbsListView.java:3453) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.os.Handler.handleCallback(Handler.java:605) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.os.Handler.dispatchMessage(Handler.java:92) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.os.Looper.loop(Looper.java:137) 11-20 10:27:47.047: E/AndroidRuntime(5078): at android.app.ActivityThread.main(ActivityThread.java:4514) 11-20 10:27:47.047: E/AndroidRuntime(5078): at java.lang.reflect.Method.invokeNative(Native Method) 11-20 10:27:47.047: E/AndroidRuntime(5078): at java.lang.reflect.Method.invoke(Method.java:511) 11-20 10:27:47.047: E/AndroidRuntime(5078): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 11-20 10:27:47.047: E/AndroidRuntime(5078): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 11-20 10:27:47.047: E/AndroidRuntime(5078): at dalvik.system.NativeStart.main(Native Method) MainActivity public class MainActivity extends Activity { public static final int DIALOG_DOWNLOAD_JSON_PROGRESS = 0; private ProgressDialog mProgressDialog; ArrayList<HashMap<String, Object>> MyArrList; @SuppressLint("NewApi") @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Permission StrictMode if (android.os.Build.VERSION.SDK_INT > 9) { StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); } // Download JSON File new DownloadJSONFileAsync().execute(); } @Override protected Dialog onCreateDialog(int id) { switch (id) { case DIALOG_DOWNLOAD_JSON_PROGRESS: mProgressDialog = new ProgressDialog(this); mProgressDialog.setMessage("Downloading....."); mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); mProgressDialog.setCancelable(true); mProgressDialog.show(); return mProgressDialog; default: return null; } } // Show All Content public void ShowAllContent() { // listView1 final ListView lstView1 = (ListView)findViewById(R.id.listView1); lstView1.setAdapter(new ImageAdapter(MainActivity.this,MyArrList)); lstView1.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View v, int position, long id) { HashMap<String, Object> hm = (HashMap<String, Object>) lstView1.getAdapter().getItem(position); String imagePath = (String) hm.get("photo"); Intent i = new Intent(MainActivity.this,FullImageActivity.class); i.putExtra("fullImage", imagePath); startActivity(i); } }); } public class ImageAdapter extends BaseAdapter { private Context context; private ArrayList<HashMap<String, Object>> MyArr = new ArrayList<HashMap<String, Object>>(); public ImageAdapter(Context c, ArrayList<HashMap<String, Object>> myArrList) { // TODO Auto-generated method stub context = c; MyArr = myArrList; } public int getCount() { // TODO Auto-generated method stub return MyArr.size(); } public Object getItem(int position) { // TODO Auto-generated method stub return position; } public long getItemId(int position) { // TODO Auto-generated method stub return position; } public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); if (convertView == null) { convertView = inflater.inflate(R.layout.activity_column, null); } // ColImage ImageView imageView = (ImageView) convertView.findViewById(R.id.ColImgPath); imageView.getLayoutParams().height = 80; imageView.getLayoutParams().width = 80; imageView.setPadding(5, 5, 5, 5); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); try { imageView.setImageBitmap((Bitmap)MyArr.get(position).get("ImageThumBitmap")); } catch (Exception e) { // When Error imageView.setImageResource(android.R.drawable.ic_menu_report_image); } // ColImgID TextView txtImgID = (TextView) convertView.findViewById(R.id.ColImgID); txtImgID.setPadding(10, 0, 0, 0); txtImgID.setText("ID : " + MyArr.get(position).get("id").toString()); // ColImgName TextView txtPicName = (TextView) convertView.findViewById(R.id.ColImgName); txtPicName.setPadding(50, 0, 0, 0); txtPicName.setText("Name : " + MyArr.get(position).get("first_name").toString()); return convertView; } } // Download JSON in Background public class DownloadJSONFileAsync extends AsyncTask<String, Void, Void> { protected void onPreExecute() { super.onPreExecute(); showDialog(DIALOG_DOWNLOAD_JSON_PROGRESS); } @Override protected Void doInBackground(String... params) { // TODO Auto-generated method stub String url = "http://192.168.10.104/adchara1/"; JSONArray data; try { data = new JSONArray(getJSONUrl(url)); MyArrList = new ArrayList<HashMap<String, Object>>(); HashMap<String, Object> map; for(int i = 0; i < data.length(); i++){ JSONObject c = data.getJSONObject(i); map = new HashMap<String, Object>(); map.put("id", (String)c.getString("id")); map.put("first_name", (String)c.getString("first_name")); // Thumbnail Get ImageBitmap To Object map.put("photo", (String)c.getString("photo")); map.put("ImageThumBitmap", (Bitmap)loadBitmap(c.getString("photo"))); // Full (for View Popup) map.put("frame", (String)c.getString("frame")); MyArrList.add(map); } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } protected void onPostExecute(Void unused) { ShowAllContent(); // When Finish Show Content dismissDialog(DIALOG_DOWNLOAD_JSON_PROGRESS); removeDialog(DIALOG_DOWNLOAD_JSON_PROGRESS); } } /*** Get JSON Code from URL ***/ public String getJSONUrl(String url) { StringBuilder str = new StringBuilder(); HttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(url); try { HttpResponse response = client.execute(httpGet); StatusLine statusLine = response.getStatusLine(); int statusCode = statusLine.getStatusCode(); if (statusCode == 200) { // Download OK HttpEntity entity = response.getEntity(); InputStream content = entity.getContent(); BufferedReader reader = new BufferedReader(new InputStreamReader(content)); String line; while ((line = reader.readLine()) != null) { str.append(line); } } else { Log.e("Log", "Failed to download file.."); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return str.toString(); } /***** Get Image Resource from URL (Start) *****/ private static final String TAG = "Image"; private static final int IO_BUFFER_SIZE = 4 * 1024; public static Bitmap loadBitmap(String url) { Bitmap bitmap = null; InputStream in = null; BufferedOutputStream out = null; try { in = new BufferedInputStream(new URL(url).openStream(), IO_BUFFER_SIZE); final ByteArrayOutputStream dataStream = new ByteArrayOutputStream(); out = new BufferedOutputStream(dataStream, IO_BUFFER_SIZE); copy(in, out); out.flush(); final byte[] data = dataStream.toByteArray(); BitmapFactory.Options options = new BitmapFactory.Options(); //options.inSampleSize = 1; bitmap = BitmapFactory.decodeByteArray(data, 0, data.length,options); } catch (IOException e) { Log.e(TAG, "Could not load Bitmap from: " + url); } finally { closeStream(in); closeStream(out); } return bitmap; } private static void closeStream(Closeable stream) { if (stream != null) { try { stream.close(); } catch (IOException e) { android.util.Log.e(TAG, "Could not close stream", e); } } } private static void copy(InputStream in, OutputStream out) throws IOException { byte[] b = new byte[IO_BUFFER_SIZE]; int read; while ((read = in.read(b)) != -1) { out.write(b, 0, read); } } /***** Get Image Resource from URL (End) *****/ @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } } FullImageActivity String imagePath = getIntent().getStringExtra("fullImage"); if(imagePath != null && !imagePath.isEmpty()){ File imageFile = new File(imagePath); if(imageFile.exists()){ Bitmap myBitmap = BitmapFactory.decodeFile(imageFile.getAbsolutePath()); ImageView iv = (ImageView) findViewById(R.id.fullimage); iv.setImageBitmap(myBitmap); } }

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• WinForms ReportViewer: slow initial rendering

  - by Bryan Roth

  UPDATE 2.4.2010 Yeah, this is an old question but I thought I would give an update. So, I'm working with the ReportViewer again and it's still rendering slowly on the initial load. The only difference is that the SQL database is on the reporting server. UPDATE 3.16.2009 I have done profiling and it's not the SQL that is making the ReportViewer render slowly on the first call. On the first call, the ReportViewer control locks up the UI thread and makes the program unresponsive. After about 5 seconds the ReportViewer will unlock the UI thread and display "Report is being generated" and then finally show the report. I know 5 seconds is not much but this shouldn't be happening. My coworker does the same thing in a program of his and the ReportViewer immediately displays the "Report is being generated" upon any request. The only difference is that the reporting server is on one server and the data is on another server. However, when I am developing the reports within SSRS, there is no delay. UPDATE I have noticed that only the first load of the ReportViewer takes a long time; each subsequent load of the same or different reports loads fast. I have a WinForms ReportViewer that I'm using in Remote processing mode that can take up to 30 seconds to render when the ReportViewer.RefreshReport() method is called. However, the report itself runs fast. This is the code to setup my ReportViewer: rvReport.ProcessingMode = ProcessingMode.Remote rvReport.ShowParameterPrompts = False rvReport.ServerReport.ReportServerUrl = New Uri(_reportServerURL) rvReport.ServerReport.ReportPath = _reportPath This is where the ReportViewer can take up to 30 seconds to render: rvReport.RefreshReport()

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• Reactive Extensions vs FileSystemWatcher

  - by Joel Mueller

  One of the things that has long bugged me about the FileSystemWatcher is the way it fires multiple events for a single logical change to a file. I know why it happens, but I don't want to have to care - I just want to reparse the file once, not 4-6 times in a row. Ideally, there would be an event that only fires when a given file is done changing, rather than every step along the way. Over the years I've come up with various solutions to this problem, of varying degrees of ugliness. I thought Reactive Extensions would be the ultimate solution, but there's something I'm not doing right, and I'm hoping someone can point out my mistake. I have an extension method: public static IObservable<IEvent<FileSystemEventArgs>> GetChanged(this FileSystemWatcher that) { return Observable.FromEvent<FileSystemEventArgs>(that, "Changed"); } Ultimately, I would like to get one event per filename, within a given time period - so that four events in a row with a single filename are reduced to one event, but I don't lose anything if multiple files are modified at the same time. BufferWithTime sounds like the ideal solution. var bufferedChange = watcher.GetChanged() .Select(e => e.EventArgs.FullPath) .BufferWithTime(TimeSpan.FromSeconds(1)) .Where(e => e.Count > 0) .Select(e => e.Distinct()); When I subscribe to this observable, a single change to a monitored file triggers my subscription method four times in a row, which rather defeats the purpose. If I remove the Distinct() call, I see that each of the four calls contains two identical events - so there is some buffering going on. Increasing the TimeSpan passed to BufferWithTime seems to have no effect - I went as high as 20 seconds without any change in behavior. This is my first foray into Rx, so I'm probably missing something obvious. Am I doing it wrong? Is there a better approach? Thanks for any suggestions...

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• WCF ChannelFactory caching

  - by Myles J

  I've just read this great article on WCF ChannelFactory caching by Wenlong Dong. My question is simply how can you actually prove that the ChannelFactory is in fact being cached between calls? I've followed the rules regarding the ClientBase’s constructors. We are using the following overloaded constructor on our object that inherits from ClientBase: ClientBase(string endpointConfigurationName, EndpointAddress remoteAddress); In the article mentioned above it is stated that: For these constructors, all arguments (including default ones) are in the following list: · InstanceContext callbackInstance · string endpointConfigurationName · EndpointAddress remoteAddress As long as these three arguments are the same when ClientBase is constructed, we can safely assume that the same ChannelFactory can be used. Fortunately, String and EndpointAddress types are immutable, i.e., we can make simple comparison to determine whether two arguments are the same. For InstanceContext, we can use Object reference comparison. The type EndpointTrait is thus used as the key of the MRU cache. To test the ChannelFactory cache theory we are checking the Hashcode in the ClientBase constructor e.g. var testHash = RuntimeHelpers.GetHashCode(base.ChannelFactory); The hash value is different between calls which makes us think that the ChannelFactory isn't actually cached. Any thoughts? Regards Myles

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• SharePoint 2010 - Client Object Model - Add attachment to ListItem

  - by Thorben

  Hi, I have a SharePoint List to which I'm adding new ListItems using the Client Object Model. Adding ListItems is not a problem and works great. Now I want to add attachments. I'm using the SaveBinaryDirect in the following manner: File.SaveBinaryDirect(clientCtx, url.AbsolutePath + "/Attachments/31/" + fileName, inputStream, true); It works without any problem as long as the item that I'm trying to add the attachment to, already has an attachment that was added through the SharePoint site and not using the Client Object Model. When I try to add an attachment to a item that doesnt have any attachments yet, I get the following errors (both happen but not with the same files - but those two messages appear consistently): The remote server returned an error: (409) Conflict The remote server returned an error: (404) Not Found I figured that maybe I need to create the attachment folder first for this item. When I try the following code: clientCtx.Load(ticketList.RootFolder.Folders); clientCtx.ExecuteQuery(); clientCtx.Load(ticketList.RootFolder.Folders[1]); // 1 -> Attachment folder clientCtx.Load(ticketList.RootFolder.Folders[1].Folders); clientCtx.ExecuteQuery(); Folder folder = ticketList.RootFolder.Folders[1].Folders.Add("33"); clientCtx.ExecuteQuery(); I receive an error message saying: Cannot create folder "Lists/Ticket System/Attachment/33" I have full administrator rights for the SharePoint site/list. Any ideas what I could be doing wrong? Thanks, Thorben

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• Compress/Decompress NSString in objective-c (iphone) using GZIP or deflate

  - by Steven

  Hi, I have a web-service running on Windows Azure which returns JSON that I consume in my iPhone app. Unfortunately, Windows Azure doesn't seem to support the compression of dynamic responses yet (long story) so I decided to get around it by returning an uncompressed JSON package, which contains a compressed (using GZIP) string. e.g {"Error":null,"IsCompressed":true,"Success":true,"Value":"vWsAAB+LCAAAAAAAB..etc.."} ... where value is the compressed string of a complex object represented in JSON. This was really easy to implement on the server, but for the life of me I can't figure out how to decompress a gzipped NSString into an uncompressed NSString, all the examples I can find for zlib etc are dealing with files etc. Can anyone give me any clues on how to do this? (I'd also be happy for a solution that used deflate as I could change the server-side implementation to use deflate too). Thanks!! Steven Edit 1: Aaah, I see that ASIHTTPRequest is using the following function in it's source code: //uncompress gzipped data with zlib + (NSData *)uncompressZippedData:(NSData*)compressedData; ... and I'm aware that I can convert NSString to NSData, so I'll see if this leads me anywhere!

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• MSSQL - Physical connection is not usable Error Code: 19

  - by Harry

  Having trouble working out this SqlException: A transport-level error has occurred when sending the request to the server. (provider: Session Provider, error: 19 - Physical connection is not usable) Any ideas what this is about? Couldn't get any hits on google or msdn on this one. The connection is MARS and Asynchronous in my own SQL pool. But don't get all excited about that - that is old code that has been stable for a long time! Exception details pasted below: System.Data.SqlClient.SqlException occurred Message=A transport-level error has occurred when sending the request to the server. (provider: Session Provider, error: 19 - Physical connection is not usable) Source=.Net SqlClient Data Provider ErrorCode=-2146232060 Class=20 LineNumber=0 Number=-1 Server=SERVER State=0 StackTrace: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() at System.Data.SqlClient.TdsParserStateObject.SNIWriteAsync(SNIHandle handle, SNIPacket packet, DbAsyncResult asyncResult) at System.Data.SqlClient.TdsParserStateObject.WriteSni() at System.Data.SqlClient.TdsParserStateObject.WritePacket(Byte flushMode) at System.Data.SqlClient.TdsParserStateObject.ExecuteFlush() at System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.BeginExecuteNonQuery(AsyncCallback callback, Object stateObject) at CrawlAbout.Library.SQL.SQLAdapter.<ExecuteNonQueryTask>d__12.MoveNext() in D:\Work\Projects\CrawlAbout.com 2.0\CrawlAbout.Library.SQL\SQLAdapter.cs:line 149 InnerException:

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• Using Visual Studio 2008 to Assemble, Link, Debug, and Execute MASM 6.11 Assembly Code

  - by Kreychek

  I would like to use Visual Studio 2008 to the greatest extent possible while effectively compiling/linking/building/etc code as if all these build processes were being done by the tools provided with MASM 6.11. The exact version of MASM does not matter, so long as it's within the 6.x range, as that is what my college is using to teach 16-bit assembly. I have done some research on the subject and have come to the conclusion that there are several options: Reconfigure VS to call the MASM 6.11 executables with the same flags, etc as MASM 6.11 would natively do. Create intermediary batch file(s) to be called by VS to then invoke the proper commands for MASM's linker, etc. Reconfigure VS's built-in build tools/rules (assembler, linker, etc) to provide an environment identical to the one used by MASM 6.11. Option (2) was brought up when I realized that the options available in VS's "External Tools" interface may be insufficient to correctly invoke MASM's build tools, thus a batch file to interpret VS's strict method of passing arguments might be helpful, as a lot of my learning about how to get this working involved my manually calling ML.exe, LINK.exe, etc from the command prompt. Below are several links that may prove useful in answering my question. Please keep in mind that I have read them all and none are the actual solution. I can only hope my specifying MASM 6.11 doesn't prevent anyone from contributing a perhaps more generalized answer. Similar method used to Option (2), but users on the thread are not contactable: http://www.codeguru.com/forum/archive/index.php/t-284051.html (also, I have my doubts about the necessity of an intermediary batch file) Out of date explanation to my question: http://www.cs.fiu.edu/~downeyt/cop3402/masmaul.html Probably the closest thing I've come to a definitive solution, but refers to a suite of tools from something besides MASM, also uses a batch file: http://www.kipirvine.com/asm/gettingStarted/index.htm#16-bit I apologize if my terminology for the tools used in each step of the code - exe process is off, but since I'm trying to reproduce the entirety of steps in between completion of writing the code and generating an executable, I don't think it matters much.

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• Autoresize UITextView and UIScrollView

  - by dennis3484

  Hello guys, I already did several searches on Stack Overflow and Google, but I couldn't find a solution to my problem. I have a Detail View for a product that includes a UIScrollView and a few subviews (UIImageView, UILabel, UITextView). You can find an example here. First I wanna autoresize the UITextView (not the text itself!) to the corresponding height. Then I wanna autoresize the entire UIScrollView so that it fits the height of my UITextView and the elements above it. I've tried the following code: myUITextView.frame = CGRectMake(2.0, 98.0, 316.0, self.view.bounds.size.height); [scrollView setContentOffset:CGPointMake(0.0, 0.0) animated:NO]; scrollView.contentSize = CGSizeMake(320.0, 98.0 + [myUITextView frame].size.height); [self.view addSubview:scrollView]; 98.0 + [myUITextView frame].size.height) because my thought was: After getting the height of myUITextView, add the height of the other subviews (98.0) to it. Unfortunately it doesn't work very well. Depending on the content of the UIScrollView, it is too short or too long. I did some logging with the result that the height of the UITextView is always the same: 2010-01-27 14:15:45.096 myApp[1362:207] [myUITextView frame].size.height: 367.000000 Thanks!

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• Android beginner: Touch events in android gridview

  - by jja

  I am using the following code to do things with gridview(slightly modified from http://developer.android.com/resources/tutorials/views/hello-gridview.html). I want to replace the onClicklistener and the onClick() method with their "touch" equivalents i.e. touchlistener and onTouch() so that when i touch an element in the gridview the image of the element changes and a double touch on the same element takes it back to the orginal state. How do I do this? I can't get my code to do this. The clicklistener works to some extent but the touch isn't. Please help. public class ImageAdapter extends BaseAdapter { private Context mContext; public ImageAdapter(Context c) { mContext = c; } public int getCount() { return mThumbIds.length; } public Object getItem(int position) { return null; } public long getItemId(int position) { return 0; } // create a new ImageView for each item referenced by the Adapter public View getView(int position, View convertView, ViewGroup parent) { ImageView imageView; if (convertView == null) { // if it's not recycled, initialize some attributes imageView = new ImageView(mContext); imageView.setLayoutParams(new GridView.LayoutParams(85, 85)); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); imageView.setPadding(8, 8, 8, 8); imageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if(position==0) { //do this } else { //do this } } }); } else { imageView = (ImageView) convertView; } imageView.setImageResource(mThumbIds[position]); return imageView; } // references to our images private Integer[] mThumbIds = { R.drawable.sample_2, R.drawable.sample_3, R.drawable.sample_4, R.drawable.sample_5, R.drawable.sample_6, R.drawable.sample_7, R.drawable.sample_0, R.drawable.sample_1, R.drawable.sample_2, R.drawable.sample_3, R.drawable.sample_4, R.drawable.sample_5, R.drawable.sample_6, R.drawable.sample_7, R.drawable.sample_0, R.drawable.sample_1, R.drawable.sample_2, R.drawable.sample_3, R.drawable.sample_4, R.drawable.sample_5, R.drawable.sample_6, R.drawable.sample_7 }; }

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• iPhone SDK 3.2 UIGestureRecognizer interfering with UIView animations?

  - by Brian Cooley

  Are there known issues with gesture recognizers and the UIView class methods for animation? I am having problems with a sequence of animations on a UIImageView from UIGestureRecognizer callback. If the sequence of animations is started from a standard callback like TouchUpInside, the animation works fine. If it is started via the UILongPressGestureRecognizer, then the first animation jumps to the end and the second animation immediately begins. Here's a sample that illustrates my problem. In the .xib for the project, I have a UIImageView that is connected to the viewToMove IBOutlet. I also have a UIButton connected to the startButton IBOutlet, and I have connected its TouchUpInside action to the startButtonClicked IBAction. The TouchUpInside action works as I want it to, but the longPressGestureRecognizer skips to the end of the first animation after about half a second. When I NSLog the second animation (animateTo200) I can see that it is called twice when a long press starts the animation but only once when the button's TouchUpInside action starts the animation. - (void)viewDidLoad { [super viewDidLoad]; UILongPressGestureRecognizer *longPressRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(startButtonClicked)]; NSArray *recognizerArray = [[NSArray alloc] initWithObjects:longPressRecognizer, nil]; [startButton setGestureRecognizers:recognizerArray]; [longPressRecognizer release]; [recognizerArray release]; } -(IBAction)startButtonClicked { if (viewToMove.center.x < 150) { [self animateTo200:@"Right to left" finished:nil context:nil]; } else { [self animateTo100:@"Right to left" finished:nil context:nil]; } } -(void)animateTo100:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context { [UIView beginAnimations:@"Right to left" context:nil]; [UIView setAnimationDuration:4]; [UIView setAnimationDelegate:self]; [UIView setAnimationDidStopSelector:@selector(animateTo200:finished:context:)]; viewToMove.center = CGPointMake(100.0, 100.0); [UIView commitAnimations]; } -(void)animateTo200:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context { [UIView beginAnimations:@"Left to right" context:nil]; [UIView setAnimationDuration:4]; viewToMove.center = CGPointMake(200.0, 200.0); [UIView commitAnimations]; }

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• new ActiveXObject('Word.Application') creates new winword.exe process when IE security does not allo

  - by Mark Ott

  We are using MS Word as a spell checker for a few fields on a private company web site, and when IE security settings are correct it works well. (Zone for the site set to Trusted, and trusted zone modified to allow control to run without prompting.) The script we are using creates a word object and closes it afterward. While the object exists, a winword.exe process runs, but it is destroyed when the word object is closed. If our site is not set in the trusted zone (Internet zone with default security level) the call that creates the word object fails as expected, but the winword.exe process is still created. I do not have any way to interact with this process in the script, so the process stays around until the user logs off (users have no way to manually destroy the process, and it wouldn't be a good solution even if they did.) The call that attempts to create the object is... try { oWordApplication = new ActiveXObject('Word.Application'); } catch(error) { // irrelevant code removed, described in comments.. // notify user spell check cannot be used // disable spell check option } So every time the page is loaded this code may be run again, creating yet another orphan winword.exe process. oWordApplication is, of course, undefined in the catch block. I would like to be able to detect the browser security settings beforehand, but I have done some searching on this and do not think that it is possible. Management here is happy with it as it is. As long as IE security is set correctly it works, and it works well for our purposes. (We may eventually look at other options for spell check functionality, but this was quick, inexpensive, and does everything we need it to do.) This last problem bugs me and I'd like to do something about it, but I'm out of ideas and I have other things that are more in need of my attention. Before I put it aside, I thought I'd ask for suggestions here...

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• getJSON not working if the mvc model view controller has a parameter

  - by Paul

  I'm having an issue with a callback. I'm not even getting an error in Firebug. If I alert before and after the getjson call both alerts show but the getjson call doesn't fire. public ActionResult TestPage() { return View(); } public ActionResult LoadMapLonLats(int mapId) { //some code return Json(_myMaps); } $("#Search").click(function() { $.getJSON("LoadMapLonLats", { mapId: 73 }, loadDbMap); }); function loadDbMap(maps) { alert('m'); $.each(maps, function(i) { alert(maps[i]); }); } As long as I leave TestPage without a parameter is works. If I add a parameter to TestPage(int id) then the call back to LoadMapLonLats doesn't work. Seems odd. Of course TestPage is the page I'm loading so I need to do some work here before rendering the page. Not sure why adding a parameter to the view would break the callback to another function. //this breaks he callback to LoadMapLonLats public ActionResult TestPage(int id) { return View(); } Any ideas? Seems like this may be related, if not sorry I can post a new thread.

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• How to organize SQL script files

  - by Mehper C. Palavuzlar

  We have an Oracle 10g database (a huge one) in our company, and I provide employees with data upon their requests. My problem is, I save almost every SQL query I wrote, and now my list has grown too long. I want to organize and rename these .sql files so that I can find the one I want easily. At the moment, I'm using some folders named as Sales Dept, Field Team, Planning Dept, Special etc. and under those folders there are .sql files like Delivery_sales_1, Delivery_sales_2, ... Sent_sold_lostsales_endpoints, ... Sales_provinces_period, Returnrates_regions_bymonths, ... Jack_1, Steve_1, Steve_2, ... I try to name the files regarding their content but this makes file names longer and does not completely meet my needs. Sometimes someone comes and demands a special report, and I give the file his name, but this is also not so good. I know duplicates or very similar files are growing in time but I don't have control over them. Can you show me the right direction to rename all these files and folders and organize my queries for easy and better control? TIA.

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• Problems with repositories on CentOS 3.9

  - by rodnower

  Hello, I have CentOS 3.9 for i386. When I try to instal some thing with yum, i.e: yum install firefox or yum install firefox* or yum list firefox and so on, I get: +++++++++++++++++++ yum info firefox Gathering header information file(s) from server(s) Server: CentOS-3 - Addons Server: CentOS-3 - Base Server: CentOS-3 - Extras Server: CentOS-3 - Updates Server: Jason's Utter Ramblings Repo Finding updated packages Downloading needed headers Looking in Available Packages: Looking in Installed Packages: +++++++++++++++++++ Some time ago I had CentOS 5, and I had the similar problem (exept of firefox all other packages were not installed) and I spent very much time to find different repositories and so on. Now I have CentOS 3, and there is nothing I can install with yum. This is yum.conf content: +++++++++++++++++++ [main] cachedir=/var/cache/yum debuglevel=2 logfile=/var/log/yum.log pkgpolicy=newest distroverpkg=redhat-release installonlypkgs=kernel kernel-smp kernel-hugemem kernel-enterprise kernel-debug kernel-unsupported kernel-smp-unsupported kernel-hugemem-unsupported tolerant=1 exactarch=1 [utterramblings] name=Jason's Utter Ramblings Repo baseurl=http://www.jasonlitka.com/media/EL4/i386/ [base] name=CentOS-$releasever - Base baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ #released updates [update] name=CentOS-$releasever - Updates baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/ #packages used/produced in the build but not released [addons] name=CentOS-$releasever - Addons baseurl=http://mirror.centos.org/centos/$releasever/addons/$basearch/ #additional packages that may be useful [extras] name=CentOS-$releasever - Extras baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/ #[centosplus] #name=CentOS-$releasever - Plus #baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/ #[testing] #name=CentOS-$releasever - Testing #baseurl=http://mirror.centos.org/centos/$releasever/testing/$basearch/ #[fasttrack] #name=CentOS-$releasever - Fasttrack #baseurl=http://mirror.centos.org/centos/$releasever/fasttrack/$basearch/ +++++++++++++++++++ The file is too long, so I littely edited it. So my question is: is there some "normal" one repository that have all basic thing like firefox and so that I will insert to this file and all will work fine? Thank you very much for ahead.

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