ThreadLocalRandom Class
Definition
Important
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A random number generator (with period 2<sup>64</sup>) isolated to the current thread.
[Android.Runtime.Register("java/util/concurrent/ThreadLocalRandom", DoNotGenerateAcw=true)]
public class ThreadLocalRandom : Java.Util.Random[<Android.Runtime.Register("java/util/concurrent/ThreadLocalRandom", DoNotGenerateAcw=true)>]
type ThreadLocalRandom = class
inherit Random- Inheritance
- Attributes
Remarks
A random number generator (with period 2<sup>64</sup>) isolated to the current thread. Like the global java.util.Random generator used by the java.lang.Math class, a ThreadLocalRandom is initialized with an internally generated seed that may not otherwise be modified. When applicable, use of ThreadLocalRandom rather than shared Random objects in concurrent programs will typically encounter much less overhead and contention. Use of ThreadLocalRandom is particularly appropriate when multiple tasks (for example, each a ForkJoinTask) use random numbers in parallel in thread pools.
Usages of this class should typically be of the form: ThreadLocalRandom.current().nextX(...) (where X is Int, Long, etc). When all usages are of this form, it is never possible to accidentally share a ThreadLocalRandom across multiple threads.
This class also provides additional commonly used bounded random generation methods.
Instances of ThreadLocalRandom are not cryptographically secure. Consider instead using java.security.SecureRandom in security-sensitive applications. Additionally, default-constructed instances do not use a cryptographically random seed unless the System#getProperty system propertyjava.util.secureRandomSeed is set to true.
Added in 1.7.
Java documentation for java.util.concurrent.ThreadLocalRandom.
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.
Constructors
| ThreadLocalRandom(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
Properties
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode | (Inherited from Object) |
| JniPeerMembers | |
| PeerReference | (Inherited from Object) |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
Methods
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Current() |
Returns the current thread's |
| Dispose() | (Inherited from Object) |
| Dispose(Boolean) | (Inherited from Object) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| JavaFinalize() |
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Next(Int32) |
Generates the next pseudorandom number. (Inherited from Random) |
| NextBoolean() |
Returns the next pseudorandom, uniformly distributed
|
| NextBytes(Byte[]) |
Generates random bytes and places them into a user-supplied byte array. (Inherited from Random) |
| NextDouble() |
Returns the next pseudorandom, uniformly distributed
|
| NextDouble(Double) |
Returns a pseudorandom |
| NextDouble(Double, Double) |
Returns a pseudorandom |
| NextFloat() |
Returns the next pseudorandom, uniformly distributed |
| NextGaussian() |
Returns the next pseudorandom, Gaussian ("normally") distributed
|
| NextInt() |
Returns the next pseudorandom, uniformly distributed |
| NextInt(Int32) |
Returns a pseudorandom, uniformly distributed |
| NextInt(Int32, Int32) |
Returns a pseudorandom |
| NextLong() |
Returns the next pseudorandom, uniformly distributed |
| NextLong(Int64) |
Returns a pseudorandom |
| NextLong(Int64, Int64) |
Returns a pseudorandom |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetSeed(Int64) |
Sets the seed of this random number generator using a single
|
| ToArray<T>() | (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() | (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| IJavaPeerable.Disposed() | (Inherited from Object) |
| IJavaPeerable.DisposeUnlessReferenced() | (Inherited from Object) |
| IJavaPeerable.Finalized() | (Inherited from Object) |
| IJavaPeerable.JniManagedPeerState | (Inherited from Object) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from Object) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from Object) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from Object) |
Extension Methods
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| GetJniTypeName(IJavaPeerable) | |