AbstractQueuedSynchronizer.TryAcquireShared(Int32) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Attempts to acquire in shared mode.
[Android.Runtime.Register("tryAcquireShared", "(I)I", "GetTryAcquireShared_IHandler")]
protected virtual int TryAcquireShared (int arg);[<Android.Runtime.Register("tryAcquireShared", "(I)I", "GetTryAcquireShared_IHandler")>]
abstract member TryAcquireShared : int -> int
override this.TryAcquireShared : int -> intParameters
- arg
- Int32
the acquire argument. This value is always the one passed to an acquire method, or is the value saved on entry to a condition wait. The value is otherwise uninterpreted and can represent anything you like.
Returns
a negative value on failure; zero if acquisition in shared mode succeeded but no subsequent shared-mode acquire can succeed; and a positive value if acquisition in shared mode succeeded and subsequent shared-mode acquires might also succeed, in which case a subsequent waiting thread must check availability. (Support for three different return values enables this method to be used in contexts where acquires only sometimes act exclusively.) Upon success, this object has been acquired.
- Attributes
Exceptions
if acquiring would place this synchronizer in an illegal state. This exception must be thrown in a consistent fashion for synchronization to work correctly.
if shared mode is not supported
Remarks
Attempts to acquire in shared mode. This method should query if the state of the object permits it to be acquired in the shared mode, and if so to acquire it.
This method is always invoked by the thread performing acquire. If this method reports failure, the acquire method may queue the thread, if it is not already queued, until it is signalled by a release from some other thread.
The default implementation throws UnsupportedOperationException.
Java documentation for java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireShared(int).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.