memory-leaks

问题 In the following code, it seems that the client.Connect.Receive is pinning the "byte[] result" permanently, causing the memory to never be freed (as it's always pinned). I'm looking for a way to tell C# that result no-longer needs to be pinned after it's usage in this.OnReceive, but I can't find the built-in function or keyword to do this. Does anyone know how I can get C# to unpin the byte[] array? (this is one of the sources of memory leaks in my C# application) this.m_TcpListener = new

问题 Sorry to keep hammering on this, but I'm trying to learn :). Is this any good? And yes, I care about memory leaks. I can't find a decent way of preallocating the char*, because there simply seems to be no cross-platform way. const string getcwd() { char* a_cwd = getcwd(NULL,0); string s_cwd(a_cwd); free(a_cwd); return s_cwd; } UPDATE2: without Boost or Qt, the most common stuff can get long-winded (see accepted answer) 回答1: If you want to remain standard, getcwd isn't required to do anything

问题 This is .net WinForm question about MDI setting. When the main form creates an MDI child form, the main form's PropertyStore holds a reference to the MDI child form. I wonder whether this will cause the child form to be alive even if it is closed. If so, what shall I do when disposing the child form in order to remove this reference? The child form is called by sample code: //The code is in the main form. var f = new FormMDIChild(); f.MdiParent = this; f.Show(); 回答1: For the record, the

问题 So, if in the javascript, I create a DOM object in the HTML page, and attach event listener to the DOM object, upon I remove the the DOM from HTML page, does the event listener still exist and causing memory leak? function myTest() { var obj = document.createElement('div'); obj.addEventListener('click', function() {alert('whatever'); }); var body = document.getElementById('body'); // assume there is a <div id='body'></div> already body.appendChild(obj); } // then after some user actions. I

问题 I know that when you register an object to the mouse's attached events, you have memory leaks. That's why you need to use WeakEvent pattern. I have a problem with this pattern : If you want to use it, you cannot define your handler in the XAML code. To me, it means that every code like this leaks : <SomeControl Mouse.MouseDown="MyHandler" /> Unless you remove your handler explicitly in code (And I doubt that anybody does that). Now there is something I don't understand : <Button Click=

问题 Ok, this is my second attempt at debugging the memory issues with my Sinatra app. I believe I have it nailed down into simple sample code this time. It seems when I filter an array through .map(&:some_method) , it causes the items in that array to not get garbage collected. Running the equivalent .map{|x| x.some_method} is totally fine. Demonstration: Given a simple sample class: class C def foo "foo" end end If I run the following in IRB, it gets collected normally: ruby-1.9.2-p180 :001 > a

问题 Ok, this is my second attempt at debugging the memory issues with my Sinatra app. I believe I have it nailed down into simple sample code this time. It seems when I filter an array through .map(&:some_method) , it causes the items in that array to not get garbage collected. Running the equivalent .map{|x| x.some_method} is totally fine. Demonstration: Given a simple sample class: class C def foo "foo" end end If I run the following in IRB, it gets collected normally: ruby-1.9.2-p180 :001 > a

问题 I am using goroutines in a package where there is a tcp server. The response most of the time is very heavy, but when the routines end it is not cleared from the memory. func Handle() { service := ":7777" tcpAddr, err := net.ResolveTCPAddr("tcp4", service) checkError(err) listener, err := net.ListenTCP("tcp", tcpAddr) checkError(err) defer listener.Close() for { conn, err := listener.Accept() checkError(err) go handleRequest(conn, db) } } func handleRequest(conn net.Conn, db *sql.DB) {

问题 I was running the emulator and received the following errors about memory leak. It was interesting that the leaking database seems to be of the Google gms instead of a user database. Does anyone know how to fix it? Thanks! 09-27 15:55:07.252 2058-2068/com.google.android.gms W/SQLiteConnectionPool: A SQLiteConnection object for database '/data/user/0/com.google.android.gms/databases/metrics.db' was leaked! Please fix your application to end transactions in progress properly and to close the

问题 I was running the emulator and received the following errors about memory leak. It was interesting that the leaking database seems to be of the Google gms instead of a user database. Does anyone know how to fix it? Thanks! 09-27 15:55:07.252 2058-2068/com.google.android.gms W/SQLiteConnectionPool: A SQLiteConnection object for database '/data/user/0/com.google.android.gms/databases/metrics.db' was leaked! Please fix your application to end transactions in progress properly and to close the