Witryna7 cze 2012 · update t set t.IsLocked = 1 from [table] t where t.id = @id. Somewhere in the update trigger: if exists ( select top 1 1 from deleted d join inserted i on i.id = d.id … Witryna5 maj 2010 · Use a single locker object to protect all of the mutable shared state. Use multiple lockers only if each locker protects completely isolated islands of mutable …
c# - Why is lock(this) {...} bad? - Stack Overflow
Witryna13 lut 2015 · First: The primary motivation for using double check lock used to be to ensure that we lock only if the instance hadn't already been created. This depends on the read operation i.e. the if statement that reads the "instance" and compares it to null and the write operation to be exactly in the same order. It is eventually the compiler … Witryna1. @OfirD: Now consider multiple async methods run on the same thread 1: function A acquires the lock and does the await. Then function B runs on the same thread; if it … hilary sledge-sarnor
How to Thread Lock Work in C#? - GeeksforGeeks
Witryna23 wrz 2008 · class Foo { private int count = 0; private readonly object sync = new object (); public void TrySomething () { lock (sync) count++; } } Now when Thread A gets … WitrynaC# lock（）不保证独占访问,c#,windows-services,webservice-client,asynccallback,C#,Windows Services,Webservice Client,Asynccallback,我正在用c#编写（我的第一个）web服务。它是连接我们的旗舰产品和供应商系统（web服务）的 … When you synchronize thread access to a shared resource, lock on a dedicated object instance (for example, private readonly object balanceLock = new object();) or another instance that is unlikely to be used as a lock object by unrelated parts of the code. Avoid using the same lock object instance for different … Zobacz więcej The following example defines an Account class that synchronizes access to its private balance field by locking on a dedicated balanceLock instance. Using the same instance for locking ensures that the balance field … Zobacz więcej hilary smith