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  • Memory Leak question

    - by franz
    I am having a memory leak issue with the following code. As much as I can tell I don't see why the problem persists but it still does not release when called. I am detecting the problem in instruments and the following code is keeping its "cards" classes alive even when it should had released them. Any help welcome. ... ... -(id)initDeckWithCardsPicked: (NSMutableArray*)cardsPicked andColors:(NSMutableArray*)cardColors { self = [self init]; if (self != nil) { int count = [cardsPicked count]; for (int i=0; i<count; i++) { int cardNum = [[cardsPicked objectAtIndex:i] integerValue]; Card * card = [[MemoryCard alloc] initWithSerialNumber:cardNum position: CGPointZero color:[cardColors objectAtIndex:i]]; [_cards addObject: card]; [card release]; } } return self; } - (id) init { self = [super init]; if (self != nil) { self.bounds = (CGRect){{0,0},[Card cardSize]}; self.cornerRadius = 8; self.backgroundColor = kAlmostInvisibleWhiteColor; self.borderColor = kHighlightColor; self.cards = [NSMutableArray array]; } return self; } ... ...

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  • Entity framework memory leak after detaching newly created object

    - by Tom Peplow
    Hi, Here's a test: WeakReference ref1; WeakReference ref2; TestRepositoryEntitiesContainer context; int i = 0; using (context = GetContext<TestRepositoryEntitiesContainer>()) { context.ObjectMaterialized += (o, s) => i++; var item = context.SomeEntities.Where(e => e.SomePropertyToLookupOn == "some property").First(); context.Detach(item); ref1 = new WeakReference(item); var newItem = new SomeEntity {SomePropertyToLookupOn = "another value"}; context.SomeEntities.AddObject(newItem); ref2 = new WeakReference(newItem); context.SaveChanges(); context.SomeEntities.Detach(newItem); newItem = null; item = null; } context = null; GC.Collect(); Assert.IsFalse(ref1.IsAlive); Assert.IsFalse(ref2.IsAlive); First assert passes, second fails... I hope I'm missing something, it is late... But it appears that detaching a fetched item will actually release all handles on the object letting it be collected. However, for new objects something keeps a pointer and creates a memory leak. NB - this is EF 4.0 Anyone seen this before and worked around it? Thanks for your help! Tom

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  • Memory leak dyld dlopen

    - by imthi
    I am getting leak and I cannot detect from where this is happening. The stack trace does not give full info after dyld open. For few leaks I am not getting any stack trace info. All I get is only object memory address. Is anyone else facing the same issue. I am using XCode 3.2 on show leopard. 18 0x103038 17 0x1033c7 16 0x1034a1 15 0x90145f48 14 dyld dlopen 13 dyld dyld::link(ImageLoader*, bool, ImageLoader::RPathChain const&) 12 dyld ImageLoader::link(ImageLoader::LinkContext const&, bool, bool, ImageLoader::RPathChain const&) 11 dyld ImageLoader::recursiveLoadLibraries(ImageLoader::LinkContext const&, bool, ImageLoader::RPathChain const&) 10 dyld dyld::libraryLocator(char const*, bool, char const*, ImageLoader::RPathChain const*) 9 dyld dyld::load(char const*, dyld::LoadContext const&) 8 dyld dyld::loadPhase0(char const*, dyld::LoadContext const&, std::vector<char const*, std::allocator<char const*> >*) 7 dyld dyld::loadPhase1(char const*, dyld::LoadContext const&, std::vector<char const*, std::allocator<char const*> >*) 6 dyld dyld::loadPhase3(char const*, dyld::LoadContext const&, std::vector<char const*, std::allocator<char const*> >*) 5 dyld dyld::loadPhase4(char const*, dyld::LoadContext const&, std::vector<char const*, std::allocator<char const*> >*) 4 dyld dyld::loadPhase5(char const*, dyld::LoadContext const&, std::vector<char const*, std::allocator<char const*> >*) 3 dyld dyld::mkstringf(char const*, ...) 2 dyld strdup 1 dyld mallocenter

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  • Reading email address from contacts fails with weird memory issue

    - by CapsicumDreams
    Hi all, I'm stumped. I'm trying to get a list of all the email address a person has. I'm using the ABPeoplePickerNavigationController to select the person, which all seems fine. I'm setting my ABRecordRef personDealingWith; from the person argument to - (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier { and everything seems fine up till this point. The first time the following code executes, all is well. When subsequently run, I can get issues. First, the code: // following line seems to make the difference (issue 1) // NSLog(@"%d", ABMultiValueGetCount(ABRecordCopyValue(personDealingWith, kABPersonEmailProperty))); // construct array of emails ABMultiValueRef multi = ABRecordCopyValue(personDealingWith, kABPersonEmailProperty); CFIndex emailCount = ABMultiValueGetCount(multi); if (emailCount 0) { // collect all emails in array for (CFIndex i = 0; i < emailCount; i++) { CFStringRef emailRef = ABMultiValueCopyValueAtIndex(multi, i); [emailArray addObject:(NSString *)emailRef]; CFRelease(emailRef); } } // following line also matters (issue 2) CFRelease(multi); If compiled as written, the are no errors or static analysis problems. This crashes with a *** -[Not A Type retain]: message sent to deallocated instance 0x4e9dc60 error. But wait, there's more! I can fix it in either of two ways. Firstly, I can uncomment the NSLog at the top of the function. I get a leak from the NSLog's ABRecordCopyValue every time through, but the code seems to run fine. Also, I can comment out the CFRelease(multi); at the end, which does exactly the same thing. Static compilation errors, but running code. So without a leak, this function crashes. To prevent a crash, I need to haemorrhage memory. Neither is a great solution. Can anyone point out what's going on?

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  • jQuery server ping slowly but surely filling memory?

    - by danspants
    I use the following piece of code to test if our server is running whilst the user is in a page. I've also started adding other functions that grab small amounts of data that are constantly changing and are to be relayed to the user (Files waiting for download, messages, reports etc). I've noticed recently that if I leave any page open (all pages contain the same function), the browser takes up more and more system memory which I can only attribute to this regular task (overnight it reached 1.6 gb). Is there some way of clearing out the data that is being accumulated? Is this normal behaviour? As far as i can tell, every time I call the function it should overwrite the previously retrieved data? function testServer(){ jQuery.ajax({ type:"HEAD", url:"/media/d_arrow_blue.png", error: function(msg) { jQuery.jGrowl("Server Disconnected"); } }); //retrieves count of files awaiting download - move to seperate function jQuery.get("/get_files/",{"type":"count"},function(data) { jQuery("#downloadList").children("div").text(data); }); }; jQuery().doTimeout(6000,function() { testServer(); return true; });

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  • Avoiding anemic domain model - a real example

    - by cbp
    I am trying to understand Anemic Domain Models and why they are supposedly an anti-pattern. Here is a real world example. I have an Employee class, which has a ton of properties - name, gender, username, etc public class Employee { public string Name { get; set; } public string Gender { get; set; } public string Username { get; set; } // Etc.. mostly getters and setters } Next we have a system that involves rotating incoming phone calls and website enquiries (known as 'leads') evenly amongst sales staff. This system is quite complex as it involves round-robining enquiries, checking for holidays, employee preferences etc. So this system is currently seperated out into a service: EmployeeLeadRotationService. public class EmployeeLeadRotationService : IEmployeeLeadRotationService { private IEmployeeRepository _employeeRepository; // ...plus lots of other injected repositories and services public void SelectEmployee(ILead lead) { // Etc. lots of complex logic } } Then on the backside of our website enquiry form we have code like this: public void SubmitForm() { var lead = CreateLeadFromFormInput(); var selectedEmployee = Kernel.Get<IEmployeeLeadRotationService>() .SelectEmployee(lead); Response.Write(employee.Name + " will handle your enquiry. Thanks."); } I don't really encounter many problems with this approach, but supposedly this is something that I should run screaming from because it is an Anemic Domain Model. But for me its not clear where the logic in the lead rotation service should go. Should it go in the lead? Should it go in the employee? What about all the injected repositories etc that the rotation service requires - how would they be injected into the employee, given that most of the time when dealing with an employee we don't need any of these repositories?

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  • Custom Model Validator for MVC

    - by scottrakes
    I am trying to add a custom model validation at the property level but need to pass in two values. Below is my class definition and validation implementation. When it runs, the "value" in the IsValid method is always null. I can get this working at the class level but the property level is causing me issues. What am I missing? Event Class: public class Event { public int? EventID {get;set;} [ValidPURL("EventID", "PURLValue")] public string PURLValue { get; set; } ... } Validation Class [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = true)] public sealed class ValidPURL : ValidationAttribute { private const string _defaultErrorMessage = "Web address already exist."; private readonly object _typeId = new object(); public ValidPURL(int eventID, string purlValue) : base(_defaultErrorMessage) { EventID = eventID; PURLValue = purlValue; } public int EventID { get; private set; } public string PURLValue { get; private set; } public override object TypeId { get { return _typeId; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentUICulture, ErrorMessageString, EventID, PURLValue); } public override bool IsValid(object value) { PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(value); object eventIDValue = properties.Find(EventID, true /* ignoreCase */).GetValue(value); object purlValue = properties.Find(PURLValue, true /* ignoreCase */).GetValue(value); [Some Validation Logic against the database] return true; } } Thank for the help!

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  • Debugging unexpected error message - possible memory management problem?

    - by Ben Packard
    I am trying to debug an application that is throwing up strange (to my untutored eyed) errors. When I try to simply log the count of an array... NSLog(@"Array has %i items", [[self startingPlayers] count]); ...I sometimes get an error: -[NSCFString count]: unrecognized selector sent to instance 0x1002af600 or other times -[NSConcreteNotification count]: unrecognized selector sent to instance 0x1002af600 I am not sending 'count' to any NSString or NSNotification, and this line of code works fine normally. A Theory... Although the error varies, the crash happens at predictable times, immediately after I have run through some other code where I'm thinking I might have a memory management issue. Is it possible that the object reference is still pointing to something that is meant to be destroyed? Sorry if my terms are off, but perhaps it's expecting the array at the address it calls 'count' on, but finds another previous object that shouldn't still be there (eg an NSString)? Would this cause the problem? If so, what is the most efficient way to debug and find out what is that address? Most of my debugging up until now involves inserting NSLogs, so this would be a good opportunity to learn how to use the debugger.

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  • loading custom view using loadNibNamed showing memory leaks

    - by user307550
    I have a number of custom table cells and views that I built using interface builder In interface builder, everything is set up similarly. There is a table cell and a couple other UILabels and a background image Object owner if the nib is NSObject Class for the table cell is the name of the class for my table cell Here is how I create the table cell in my code: SectionedSwitchTableCell *cell = nil; NSArray *nibs = [[NSBundle mainBundle] loadNibNamed:kSectionedSwitchTableCellIdentifier owner:owner options:nil]; for(id currentObject in nibs) { if([currentObject isKindOfClass:[SectionedSwitchTableCell class]]) { cell = (SectionedSwitchTableCell *)currentObject; break; } } return cell; For my custom table headers I have this NSArray *nibs = [[NSBundle mainBundle] loadNibNamed:@"CustomTableHeader" owner:self options:nil]; for(id currentObject in nibs) { if([currentObject isKindOfClass:[CustomTableHeader class]]) { return header } } In my .h and .m files for the custom view, I have IBOutlet, @property set up for everything except for the background image UIImageView. Everything that has the IBOutlet and @property are also @synthesized and released in the .m file. Leaks is showing that I have memory leaks with CALayer when I create these custom view objects. Am I doing something wrong here when I create these custom view objects? I'm kind of tearing my hair out trying to figure out where these leaks are coming from. As a side note, I have a UIImageView background image defined in these custom views but I didn't define properties and IBOutlets in my .h and .m files. Defining them doesn't make a difference when I run it through Leaks but just wanted to confirm if I'm doing the right thing. Any input would be super helpful. Thanks :)

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  • returning autorelease NSString still causes memory leaks

    - by hookjd
    I have a simple function that returns an NSString after decoding it. I use it a lot throughout my application, and it appears to create a memory leak (according to "leaks" tool) every time I use it. Leaks tells me the problem is on the line where I alloc the NSString that I am going to return, even though I autorelease it. Here is the function: -(NSString *) decodeValue { NSString *newString; newString = [self stringByReplacingOccurrencesOfString:@"#" withString:@"$"]; NSData *stateData = [NSData dataWithBase64EncodedString:newString]; NSString *convertState = [[[NSString alloc] initWithData:stateData encoding:NSUTF8StringEncoding] autorelease]; return convertState; } My understanding of [autorelease] is that it should be used in exactly this way... where I want to hold onto the object just long enough to return it in my function and then let the object be autoreleased later. So I believe I can use this function through code like this without manually releasing anything: NSString *myDecodedString = [myString decodeValue]; But this process is reporting leaks and I don't understand how to change it to avoid the leaks. What am I doing wrong?

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  • Execute binary from memory in C# .net with binary protected from a 3rd party software

    - by NoobTom
    i've the following scenario: i've a C# application.exe i pack application.exe inside TheMida, a software anti-piracy/reverse engineering. i encrypt application.exe with aes256. (i wrote my own aes encryption/decryption and it is working) Now, when i want to execute my application i do the following: decrypt application.exe in memory execute the application.exe with the following code: BinaryReader br = new BinaryReader(decOutput); byte[] bin = br.ReadBytes(Convert.ToInt32(decOutput.Length)); decOutput.Close(); br.Close(); // load the bytes into Assembly Assembly a = Assembly.Load(bin); // search for the Entry Point MethodInfo method = a.EntryPoint; if (method != null) { // create an istance of the Startup form Main method object o = a.CreateInstance(method.Name); // invoke the application starting point method.Invoke(o, null); the application does not execute correctly. Now, the problem i think, is that this method is only to execute .NET executable. Since i packed my application.exe inside TheMida this does not work. Is there a workaround to this situation? Any suggestion? Thank you in advance.

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  • Private member vector of vector dynamic memory allocation

    - by Geoffroy
    Hello, I'm new to C++ (I learned programming with Fortran), and I would like to allocate dynamically the memory for a multidimensional table. This table is a private member variable : class theclass{ public: void setdim(void); private: std::vector < std::vector <int> > thetable; } I would like to set the dimension of thetable with the function setdim(). void theclass::setdim(void){ this->thetable.assign(1000,std::vector <int> (2000)); } I have no problem compiling this program, but as I execute it, I've got a segmentation fault. The strange thing for me is that this piece (see under) of code does exactly what I want, except that it doesn't uses the private member variable of my class : std::vector < std::vector < int > > thetable; thetable.assign(1000,std::vector <int> (2000)); By the way, I have no trouble if thetable is a 1D vector. In theclass : std::vector < int > thetable; and if in setdim : this->thetable.assign(1000,2); So my question is : why is there such a difference with "assign" between thetable and this-thetable for a 2D vector? And how should I do to do what I want? Thank-you for your help, Best regards, -- Geoffroy

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  • Out of memory while iterating through rowset

    - by Phliplip
    Hi All, I have a "small" table of 60400 rows with zipcode data. I wan't to iterate through them all, update a column value, and then save it. The following is part of my Zipcodes model which extends My_Db_Table that a totalRows function that - you guessed it.. returns the total number of rows in the table (60400 rows) public function normalizeTable() { $this->getAdapter()->setProfiler(false); $totalRows = $this->totalRows(); $rowsPerQuery = 5; for($i = 0; $i < $totalRows; $i = $i + $rowsPerQuery) { $select = $this->select()->limit($i, $rowsPerQuery); $rowset = $this->fetchAll($select); foreach ($rowset as $row) { $row->{self::$normalCityColumn} = $row->normalize($row->{self::$cityColumn}); $row->save(); } unset($rowset); } } My rowClass contains a normalize function (basicly a metaphone wrapper doing some extra magic). At first i tried a plain old $this-fetchAll(), but got a out of memory (128MB) right away. Then i tried splitting the rowset into chunks, only difference is that some rows actually gets updated. Any ideas on how i can acomplish this, or should i fallback to ye'olde mysql_query()

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  • Clarification of atomic memory access for different OSs

    - by murrekatt
    I'm currently porting a Windows C++ library to MacOS as a hobby project as a learning experience. I stumbled across some code using the Win Interlocked* functions and thus I've been trying to read up on the subject in general. Reading related questions here in SO, I understand there are different ways to do these operations depending on the OS. Interlocked* in Windows, OSAtomic* in MacOS and I also found that compilers have builtin (intrinsic) operations for this. After reading gcc builtin atomic memory access, I'm left wondering what is the difference between intrinsic and the OSAtomic* or Interlocked* ones? I mean, can I not choose between OSAtomic* or gcc builtin if I'm on MacOS when I use gcc? The same if I'd be on Windows using gcc. I also read that on Windows Interlocked* come as both inline and intrinsic versions. What to consider when choosing between intrinsic or inline? In general, are there multiple options on OSs what to use? Or is this again "it depends"? If so, what does it depend on? Thanks!

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  • Memory Leak in returning NSMutableArray from class

    - by Structurer
    Hi I am quite new to Objective C for the iPhone, so I hope you wont kill me for asking a simple question. I have made an App that works fine, except that Instruments reports memory leaks from the class below. I use it to store settings from one class and then retrieve them from another class. These settings are stored on a file so they can be retrieved every time the App is ran. What can I do do release the "setting" and is there anything that can be done to call (use) the class in a smarter way? Thanks ----- Below is Settings.m ----- import "Settings.h" @implementation Settings @synthesize settings; -(NSString *)dataFilePath // Return path for settingfile, including filename { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; return [documentsDirectory stringByAppendingPathComponent:kUserSettingsFileName]; } -(NSMutableArray *)getParameters // Return settings from disk after checking if file exist (if not create with default values) { NSString *filePath = [self dataFilePath]; if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) // Getting data from file { settings = [[NSMutableArray alloc] initWithContentsOfFile:filePath]; } else // Creating default settings { settings = [[NSMutableArray alloc] initWithObjects: [NSNumber numberWithInteger:50], [NSNumber numberWithInteger:50], nil]; [settings writeToFile:[self dataFilePath] atomically:YES]; } return settings; } ----- Below is my other class from where I call my Settings class ----- // Get settings from file Settings *aSetting = [[Settings alloc] init]; mySettings = [aSetting getParameters]; [aSetting release];

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  • IPhone - Memory Management problems.

    - by user321721
    i am going over my code and trying to get a handle on proper memory management. This code: imageView = [[[UIImageView alloc] initWithImage:myImage] autorelease]; causes my application to crash. I am using multiple view controllers within a nav bar controller. The app works fine, i cant select a person from the first view controller (tableview) and it puts me to a list of that persons photos, i can then select a photo from that view controller (tableview) and move to a final view with a scrollview for viewing the photo. Once i hit back on the navbar the previous view loads (list of photos in a tableview) however the app crashes right before the row is deselected using this code: (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; if(RowSelected != nil) { [MainTableView deselectRowAtIndexPath:RowSelected animated:YES]; } } Row selected is stored when a the user clicks a row. If i leave the code as : imageView = [[UIImageView alloc] initWithImage:myImage]; The app runs fine. Am i doing something wrong? do i not need to autorelease this? Thanks!

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  • Memory leak in PHP with Symfony + Doctrine

    - by Nicklas Ansman
    I'm using PHP with the Symfony framework (with Doctrine as my ORM) to build a spider that crawls some sites. My problem is that the following code generates a memory leak: $q = $this -> createQuery('Product p'); if($store) { $q -> andWhere('p.store_id = ?', $store -> getId()) -> limit(1); } $q -> andWhere('p.name = ?', $name); $data = $q -> execute(); $q -> free(true); $data -> free(true); return NULL; This code is placed in a subclass of Doctrine_Table. If I comment out the execute part (and of course the $data - free(true)) the leak stops. This has led me to the conclusion that it's the Doctrine_Collection that's causing the leak. Any ideas on what I can do to fix this? I'd be happy to provide more info on the problem if you need it. Regards Nicklas

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  • Cocoa memory management - object going nil on me

    - by SirRatty
    Hi all, Mac OS X 10.6, Cocoa project, with retain/release gc I've got a function which: iterates over a specific directory, scans it for subfolders (included nested ones), builds an NSMutableArray of strings (one string per found subfolder path), and returns that array. e.g. (error handling removed for brevity). NSMutableArray * ListAllSubFoldersForFolderPath(NSString *folderPath) { NSMutableArray *a = [NSMutableArray arrayWithCapacity:100]; NSString *itemName = nil; NSFileManager *fm = [NSFileManager defaultManager]; NSDirectoryEnumerator *e = [fm enumeratorAtPath:folderPath]; while (itemName = [e nextObject]) { NSString *fullPath = [folderPath stringByAppendingPathComponent:itemName]; BOOL isDirectory; if ([fm fileExistsAtPath:fullPath isDirectory:&isDirectory]) { if (isDirectory is_eq YES) { [a addObject: fullPath]; } } } return a; } The calling function takes the array just once per session, keeps it around for later processing: static NSMutableArray *gFolderPaths = nil; ... gFolderPaths = ListAllSubFoldersForFolderPath(myPath); [gFolderPaths retain]; All appears good at this stage. [gFolderPaths count] returns the correct number of paths found, and [gFolderPaths description] prints out all the correct path names. The problem: When I go to use gFolderPaths later (say, the next run through my event loop) my assertion code (and gdb in Xcode) tells me that it is nil. I am not modifying gFolderPaths in any way after that initial grab, so I am presuming that my memory management is screwed and that gFolderPaths is being released by the runtime. My assumptions/presumptions I do not have to retain each string as I add it to the mutable array because that is done automatically, but I do have to retain the the array once it is handed over to me from the function, because I won't be using it immediately. Is this correct? Any help is appreciated.

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  • NSMutableArray for Object which has NSString property causes memory leak

    - by user262325
    Hello everyone I hope to add objects to a NSMutableArray "myArray", The NSMutableArray is the array for FileObj which has a NSString property "fileName" #import <UIKit/UIKit.h> @interface FileObj : NSObject { NSString *fileName; } -(void) setfileName:(NSString *)s ; -(NSString *) getfileName ; @end // // File.m// #import "File.h" @implementation FileObj -(void) setfileName:(NSString *)s ; { fileName=s; } -(NSString *) getfileName ; { return fileName; } @end I initialize the myArray here: NSMutableArray *temarray; temarray=[[NSMutableArray alloc] init]; self.myArray=temarray; [temarray release]; the codes to add object to myArray FileObj *newobj=[[FileObj alloc]init ]; NSString *fieldValue2 = [[NSString alloc] initWithUTF8String:@"aaaa"]; [newobj setfileName:fieldValue2]; [myArray addObject:newobj]; [fieldValue2 release]; //**if I enabled the line, it will cause crash** //**if I disable the line, it will cause memory leak** [newobj release]; Welcome any comment Thanks interdev

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  • Strange results about C++11 memory model (Relaxed ordering)

    - by Dancing_bunny
    I was testing the example in the memory model of the Anthony Williams's book "C++ Concurrency" #include<atomic> #include<thread> #include<cassert> std::atomic_bool x,y; std::atomic_int z; void write_x_then_y() { x.store(true, std::memory_order_relaxed); y.store(true, std::memory_order_relaxed); } void read_y_then_x() { while(!y.load(std::memory_order_relaxed)); if(x.load(std::memory_order_relaxed)) { ++z; } } int main() { x = false; y = false; z = 0; std::thread a(write_x_then_y); std::thread b(read_y_then_x); a.join(); b.join(); assert(z.load()!=0); } According to the explanation, relaxed operations on difference variables (here x and y) can be freely reordered. However, I repeated running the problem for more than several days. I never hit the situation that the assertion (assert(z.load()!=0);) fires. I just use the default optimization and compile the code using g++ -std=c++11 -lpthread dataRaceAtomic.cpp Does anyone actually try it and hit the assertion? Could anyone give me an explanation about my test results? BTW, I also tried the version without using the atomic type, I got the same result. Currently, both programs are running healthily. Thanks.

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  • C++ new memory allocation fragmentation

    - by tamulj
    I was trying to look at the behavior of the new allocator and why it doesn't place data contiguously. My code: struct ci { char c; int i; } template <typename T> void memTest() { T * pLast = new T(); for(int i = 0; i < 20; ++i) { T * pNew = new T(); cout << (pNew - pLast) << " "; pLast = pNew; } } So I ran this with char, int, ci. Most allocations were a fixed length from the last, sometimes there were odd jumps from one available block to another. sizeof(char) : 1 Average Jump: 64 bytes sizeof(int): 4 Average Jump: 16 sizeof(ci): 8 (int has to be placed on a 4 byte align) Average Jump: 9 Can anyone explain why the allocator is fragmenting memory like this? Also why is the jump for char so much larger then ints and a structure that contains both an int and char.

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  • cakephp - form for belongsTo Model

    - by user1511579
    I createt the following model to link 2 relational tables: class Ficha extends AppModel { //public $useTable = 'ficha_seg'; var $primaryKey = 'id_ficha'; var $name = 'Ficha'; var $belongsTo = array( 'Perigo' => array( 'className' => 'Perigo', 'foreignKey' => false, 'conditions' => 'Perigo.id_fichas = Ficha.id_ficha' ) ); } Now, i have a form that requires data from the class Ficha, and then is redirected to another ctp page where i will input the data for the table "Perigos". However, since i'm still a newbie in cakephp i'm having difficult building that second form to insert the data on the table "Perigos". Here goes the code i built at the moment related to the second form: FichasController.php (the method where is it supposed to save the data on the table "Perigos": public function preencher_ficha(){ if ($this->request->is('ficha')) { $this->Ficha->create(); if ($this->Ficha->Perigo->save($this->request->data)) { $last_id=$this->Ficha->getLastInsertID(); $this->Session->setFlash('Your post has been updated '.$last_id.'.'); //$this->redirect(array('action' => 'preencher_ficha')); } else { $this->Session->setFlash('Unable to qualquer coisa your post.'); } } } The preencher_ficha.ctp file with the form: echo $this->Form->create('Ficha->Perigo', array('action' => 'index')); echo $this->Form->input('class_subst', array('label' => 'Classificação:')); echo $this->Form->input('simbolos_perigo', array('label' => 'Símbolos:')); echo $this->Form->input('frases_r', array('label' => 'Frases:')); echo $this->Form->end('Finalizar Ficha'); Here i guess the create part is wrong, but i think i have errors too in the controller part.

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  • My MYSQL & PHP while code is out of memory, when there is only one row

    - by Sam
    Hey all, why is this code throwing an out of memory error, when there is only 1 row in the database.. $request_db = mysql_query("SELECT * FROM requests WHERE haveplayed='0'") or die(mysql_error()); $request = mysql_fetch_array( $request_db ); echo "<table border=\"1\" align=\"center\">"; while ( $request['haveplayed'] == "0" ) { echo "<tr><td>"; echo $request['SongName']; echo "</td><td>"; echo "<tr><td>"; echo $request['Artist']; echo "</td><td>"; echo "<tr><td>"; echo $request['DedicatedTo']; echo "</td><td>"; } echo "</table>"; Thanks.

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  • Memory Leaks in pickerView using sqlite

    - by Danamo
    I'm adding self.notes array to a pickerView. This is how I'm setting the array: NSMutableArray *notesArray = [[NSMutableArray alloc] init]; [notesArray addObject:@"-"]; [notesArray addObjectsFromArray:[dbManager getTableValues:@"Notes"]]; self.notes = notesArray; [notesArray release]; The info for the pickerView is taken from the database in this method: -(NSMutableArray *)getTableValues:(NSString *)table { NSMutableArray *valuesArray = [[NSMutableArray alloc] init]; if (sqlite3_open([self.databasePath UTF8String], &database) != SQLITE_OK) { sqlite3_close(database); NSAssert(0, @"Failed to open database"); } else { NSString *query = [[NSString alloc] initWithFormat:@"SELECT value FROM %@", table]; sqlite3_stmt *statement; if (sqlite3_prepare_v2(database, [query UTF8String], -1, &statement, nil) == SQLITE_OK) { while (sqlite3_step(statement) == SQLITE_ROW) { NSString *value =[NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 0)]; [valuesArray addObject:value]; [value release]; } sqlite3_reset(statement); } [query release]; sqlite3_finalize(statement); sqlite3_close(database); } return valuesArray; } But I keep getting memory leaks in Instruments for these lines: NSMutableArray *valuesArray = [[NSMutableArray alloc] init]; and [valuesArray addObject:value]; What am I doing wrong here? Thanks for your help!

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  • How to fix Solr - Server is shutting down issue?

    - by Krunal
    I was having a running Solr 4.1 on Windows Server 2008 R2. The Solr is deployed on Tomcat. However, today it stops suddenly, and while accessing Solr it gives following error. HTTP Status 503 - Server is shutting down type Status report message Server is shutting down description The requested service is not currently available. On further looking into Logs, we got following: Log File: tomcat7-stderr.2013-05-09.txt May 09, 2013 8:00:40 PM org.apache.solr.core.CoreContainer finalize SEVERE: CoreContainer was not shutdown prior to finalize(), indicates a bug -- POSSIBLE RESOURCE LEAK!!! instance=2221663 Log File: catalina.2013-05-09.txt May 09, 2013 7:59:25 PM org.apache.solr.core.SolrResourceLoader <init> INFO: new SolrResourceLoader for directory: 'c:\solrdir\' May 09, 2013 7:59:29 PM org.apache.solr.common.SolrException log SEVERE: Exception during parsing file: null:org.xml.sax.SAXParseException; systemId: file:/c:/solr/solr.xml; lineNumber: 2; columnNumber: 6; The processing instruction target matching "[xX][mM][lL]" is not allowed. at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPIData(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanPIData(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPI(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source) at org.apache.solr.core.Config.<init>(Config.java:121) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:428) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:404) at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:336) at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:98) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4656) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5309) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:977) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1655) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) May 09, 2013 7:59:29 PM org.apache.solr.servlet.SolrDispatchFilter init SEVERE: Could not start Solr. Check solr/home property and the logs May 09, 2013 7:59:29 PM org.apache.solr.common.SolrException log SEVERE: null:org.apache.solr.common.SolrException: at org.apache.solr.core.CoreContainer.load(CoreContainer.java:431) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:404) at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:336) at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:98) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4656) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5309) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:977) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1655) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: org.xml.sax.SAXParseException; systemId: file:/c:/solrdir/solr.xml; lineNumber: 2; columnNumber: 6; The processing instruction target matching "[xX][mM][lL]" is not allowed. at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPIData(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanPIData(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanPI(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source) at org.apache.solr.core.Config.<init>(Config.java:121) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:428) ... 20 more May 09, 2013 7:59:29 PM org.apache.solr.servlet.SolrDispatchFilter init INFO: SolrDispatchFilter.init() done May 09, 2013 7:59:29 PM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory C:\Program Files (x86)\Apache Software Foundation\Tomcat 7.0\webapps\docs May 09, 2013 7:59:30 PM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory C:\Program Files (x86)\Apache Software Foundation\Tomcat 7.0\webapps\manager May 09, 2013 7:59:30 PM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory C:\Program Files (x86)\Apache Software Foundation\Tomcat 7.0\webapps\ROOT May 09, 2013 7:59:30 PM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["http-bio-8983"] May 09, 2013 7:59:30 PM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["ajp-bio-8009"] May 09, 2013 7:59:30 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 9578 ms May 09, 2013 8:00:40 PM org.apache.solr.core.CoreContainer finalize SEVERE: CoreContainer was not shutdown prior to finalize(), indicates a bug -- POSSIBLE RESOURCE LEAK!!! instance=2221663 Any idea what could be wrong and how to fix?

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