TWaitableQueue
A queue that can be waited on
Inheritance
| Level | Ancestor | Description |
|---|---|---|
| 1 | TObject | Ultimate ancestor in a class hierarchy |
| 2 | TWaitableObject | Ahstract base class for an object that can be waited for using WaitFor |
| 3 | TWaitableQueue |
Source
Thread.Synchronization.WaitableQueue.pas (34)
Description
A TWaitableQueue can be used by multiple threads to safely Queue elements at the end of the queue
and Dequeue from the front of the queue. Use WaitFor to postpone execution until the queue is not empty
and a call to Dequeue will succeed. The queue can either have a finite maximum size or not. When there is a maximum size
every call to Queue will block when the queue is full until a element is dequeued.
Fields
| Scope | Visibility | Type | Name | Description |
|---|---|---|---|---|
| Instance | protected | TThreadLock | Lock | |
| Instance | protected | TList<TElement> | Elements | |
| Instance | protected | TSemaphore | EmptySemaphore | |
| Instance | protected | TSemaphore | Semaphore |
Methods
| Scope | Visibility | Result | Name | Description |
|---|---|---|---|---|
| Instance | private | TReferenceManager<TElement> | GetElementManager() | |
| Instance | private | SetElementManager(Value: TReferenceManager<TElement>) | ||
| Instance | public | Create(MaximumSize: TInteger32) | ||
| Instance | public | Destroy() | ||
| Instance | public | THandle | GetWaitHandle() | |
| Instance | public | TInteger32 | Queue(Element: TElement) | |
| Instance | public | TElement | Dequeue(Release: TBoolean) |