finalizer

How do I unit test a finalizer?

自闭症网瘾萝莉.ら 提交于 2019-12-03 11:14:40
问题 I have the following class which is a decorator for an IDisposable object (I have omitted the stuff it adds) which itself implements IDisposable using a common pattern: public class DisposableDecorator : IDisposable { private readonly IDisposable _innerDisposable; public DisposableDecorator(IDisposable innerDisposable) { _innerDisposable = innerDisposable; } #region IDisposable Members public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } #endregion ~DisposableDecorator() {

Can we switch off finalizers?

我的未来我决定 提交于 2019-12-03 10:19:04
As there is little guarantee about when and even if finalizers run and finalizers are almost considered a smell nowadays - is there any way to persuade the JVM to completely skip all finalization processes? I ask because we have a mammoth application which, when moved to a newer JVM (not sure which at this stage) is brought to its knees by what looks very much like the known problems with finalisers (exceptions being thrown and therefore very slow GC). Added There is some discussion on Troubleshooting a java memory leak: finalization? where it is suggested that the primary problem arises when

What is the scope of finalizer thread - per application domain or per process?

≡放荡痞女 提交于 2019-12-03 06:21:10
Based on all my reading there should be one GC thread to invoke all finalizers. Now, the question is what is the scope of this "one" thread - per process or per application domain, as the whole intention of domains is to separate and make "independent" different applications in one process space. I read here : If an unhandled exception occurs in a finalizer the CLR's executing thread will swallow the exception, treat the finalizer as if it completed normally, remove it from the freachable queue and move onto the next entry. More serious though, is what happens if your finalizer doesn't exit

How to properly finalize an object in Fortran?

隐身守侯 提交于 2019-12-02 11:25:42
问题 I have an object parsing a textfile. Here's my main program: program main use Parser_class implicit none type(Parser) :: Parser call Parser%ProcessFile('data.txt') call Parser%Deallocate end program main where the type definition is module Parser_class type :: Parser contains procedure, public :: ProcessFile procedure, public :: Deallocate end type Parser contains subroutine ProcessFile(self) ... end subroutine subroutine Deallocate(self) class(Parser) :: self ... end subroutine end module

Is Object memory freed when we explicitly call finalize() on it? [duplicate]

纵饮孤独 提交于 2019-12-02 03:49:27
问题 This question already has answers here : Java and manually executing finalize (3 answers) When is the finalize() method called in Java? (17 answers) Closed 6 years ago . As far as my understanding goes finalize() and GC are two different aspects. GC uses finalize() method to free Object memory. We cannot state when GC will occur(even if we explicitly call System.gc()). But we can explicitly call finalize() on an Object. Will the function be executed immediately(memory freed) or it waits till

Error: Do not override object.Finalize. Instead, provide a destructor

ⅰ亾dé卋堺 提交于 2019-12-02 02:44:45
Getting the above error in following code. How to rectify it. Thanks. Please look for protected override void Finalize() { Dispose(false); } in the below code. using Microsoft.Win32; using System.Runtime.InteropServices; public class Kiosk : IDisposable { #region "IDisposable" // Implementing IDisposable since it might be possible for // someone to forget to cause the unhook to occur. I didn't really // see any problems with this in testing, but since the SDK says // you should do it, then here's a way to make sure it will happen. public void Dispose() { Dispose(true); GC.SuppressFinalize(this

Is Object memory freed when we explicitly call finalize() on it? [duplicate]

别等时光非礼了梦想. 提交于 2019-12-02 02:25:10
This question already has an answer here: Java and manually executing finalize 3 answers When is the finalize() method called in Java? 16 answers As far as my understanding goes finalize() and GC are two different aspects. GC uses finalize() method to free Object memory. We cannot state when GC will occur(even if we explicitly call System.gc()). But we can explicitly call finalize() on an Object. Will the function be executed immediately(memory freed) or it waits till GC occurs like System.gc() call? Also as per the docs the finalize method is never invoked more than once by a Java virtual

Is it possible to run tear down fixture only after all params runs?

隐身守侯 提交于 2019-12-02 00:52:15
For instance if you have: @pytest.mark.parametrize('lang', ["EN", "FR"]) def test_whats_hot_quick_links_are_displayed(self, lang): # Do something here and i have this teardown fixture in conftest: @pytest.fixture(scope='function', autouse=True) def teardown_function(request): def execute_at_the_end(): logging.info("Ending Test Case...") database.clear() request.addfinalizer(execute_at_the_end) So how can i make the teardown function execute only after both EN and FR test runs are executed instead of having this run after each param run? For this behaviour I use scope=class and wraps my test

What are finalisers for?

烂漫一生 提交于 2019-12-01 16:14:20
I have been programming in .NET for four years (mostly C#) and I use IDiposable extensively, but I am yet to find a need for a finaliser. What are finalisers for? A finalizer is a last ditch attempt to ensure that something is cleaned up correctly, and is usually reserved for objects that wrap unmanaged resources, such as unmanaged handles etc that won't get garbage collected. It is rare indeed to write a finalizer. Fortunately (and unlike IDisposable ), finalizers don't need to be propagated; so if you have a ClassA with a finalizer, and a ClassB which wraps ClassA , then ClassB does not need

What are finalisers for?

主宰稳场 提交于 2019-12-01 15:13:52
问题 I have been programming in .NET for four years (mostly C#) and I use IDiposable extensively, but I am yet to find a need for a finaliser. What are finalisers for? 回答1: A finalizer is a last ditch attempt to ensure that something is cleaned up correctly, and is usually reserved for objects that wrap unmanaged resources, such as unmanaged handles etc that won't get garbage collected. It is rare indeed to write a finalizer. Fortunately (and unlike IDisposable ), finalizers don't need to be