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import from UniRx and some modified.

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Yoshifumi Kawai
2019-05-20 00:14:47 +09:00
parent d5dab7fd1a
commit 5aaeb13c5d
246 changed files with 20742 additions and 19 deletions
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374
Assets/UniRx.Async/UniTask.WhenAny.cs Normal file
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#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
using System;
using System.Runtime.CompilerServices;
using System.Runtime.ExceptionServices;
using System.Threading;
namespace UniRx.Async
{
public partial struct UniTask
{
// UniTask
public static async UniTask<(bool hasResultLeft, T0 result)> WhenAny<T0>(UniTask<T0> task0, UniTask task1)
{
return await new UnitWhenAnyPromise<T0>(task0, task1);
}
public static async UniTask<(int winArgumentIndex, T result)> WhenAny<T>(params UniTask<T>[] tasks)
{
return await new WhenAnyPromise<T>(tasks);
}
/// <summary>Return value is winArgumentIndex</summary>
public static async UniTask<int> WhenAny(params UniTask[] tasks)
{
return await new WhenAnyPromise(tasks);
}
class UnitWhenAnyPromise<T0>
{
T0 result0;
ExceptionDispatchInfo exception;
Action whenComplete;
int completeCount;
int winArgumentIndex;
bool IsCompleted => exception != null || Volatile.Read(ref winArgumentIndex) != -1;
public UnitWhenAnyPromise(UniTask<T0> task0, UniTask task1)
{
this.whenComplete = null;
this.exception = null;
this.completeCount = 0;
this.winArgumentIndex = -1;
this.result0 = default(T0);
RunTask0(task0).Forget();
RunTask1(task1).Forget();
}
void TryCallContinuation()
{
var action = Interlocked.Exchange(ref whenComplete, null);
if (action != null)
{
action.Invoke();
}
}
async UniTaskVoid RunTask0(UniTask<T0> task)
{
T0 value;
try
{
value = await task;
}
catch (Exception ex)
{
exception = ExceptionDispatchInfo.Capture(ex);
TryCallContinuation();
return;
}
var count = Interlocked.Increment(ref completeCount);
if (count == 1)
{
result0 = value;
Volatile.Write(ref winArgumentIndex, 0);
TryCallContinuation();
}
}
async UniTaskVoid RunTask1(UniTask task)
{
try
{
await task;
}
catch (Exception ex)
{
exception = ExceptionDispatchInfo.Capture(ex);
TryCallContinuation();
return;
}
var count = Interlocked.Increment(ref completeCount);
if (count == 1)
{
Volatile.Write(ref winArgumentIndex, 1);
TryCallContinuation();
}
}
public Awaiter GetAwaiter()
{
return new Awaiter(this);
}
public struct Awaiter : ICriticalNotifyCompletion
{
UnitWhenAnyPromise<T0> parent;
public Awaiter(UnitWhenAnyPromise<T0> parent)
{
this.parent = parent;
}
public bool IsCompleted
{
get
{
return parent.IsCompleted;
}
}
public (bool, T0) GetResult()
{
if (parent.exception != null)
{
parent.exception.Throw();
}
return (parent.winArgumentIndex == 0, parent.result0);
}
public void OnCompleted(Action continuation)
{
UnsafeOnCompleted(continuation);
}
public void UnsafeOnCompleted(Action continuation)
{
parent.whenComplete = continuation;
if (IsCompleted)
{
var action = Interlocked.Exchange(ref parent.whenComplete, null);
if (action != null)
{
action();
}
}
}
}
}
class WhenAnyPromise<T>
{
T result;
int completeCount;
int winArgumentIndex;
Action whenComplete;
ExceptionDispatchInfo exception;
public bool IsComplete => exception != null || Volatile.Read(ref winArgumentIndex) != -1;
public WhenAnyPromise(UniTask<T>[] tasks)
{
this.completeCount = 0;
this.winArgumentIndex = -1;
this.whenComplete = null;
this.exception = null;
this.result = default(T);
for (int i = 0; i < tasks.Length; i++)
{
RunTask(tasks[i], i).Forget();
}
}
async UniTaskVoid RunTask(UniTask<T> task, int index)
{
T value;
try
{
value = await task;
}
catch (Exception ex)
{
exception = ExceptionDispatchInfo.Capture(ex);
TryCallContinuation();
return;
}
var count = Interlocked.Increment(ref completeCount);
if (count == 1)
{
result = value;
Volatile.Write(ref winArgumentIndex, index);
TryCallContinuation();
}
}
void TryCallContinuation()
{
var action = Interlocked.Exchange(ref whenComplete, null);
if (action != null)
{
action.Invoke();
}
}
public Awaiter GetAwaiter()
{
return new Awaiter(this);
}
public struct Awaiter : ICriticalNotifyCompletion
{
WhenAnyPromise<T> parent;
public Awaiter(WhenAnyPromise<T> parent)
{
this.parent = parent;
}
public bool IsCompleted
{
get
{
return parent.IsComplete;
}
}
public (int, T) GetResult()
{
if (parent.exception != null)
{
parent.exception.Throw();
}
return (parent.winArgumentIndex, parent.result);
}
public void OnCompleted(Action continuation)
{
UnsafeOnCompleted(continuation);
}
public void UnsafeOnCompleted(Action continuation)
{
parent.whenComplete = continuation;
if (IsCompleted)
{
var action = Interlocked.Exchange(ref parent.whenComplete, null);
if (action != null)
{
action();
}
}
}
}
}
class WhenAnyPromise
{
int completeCount;
int winArgumentIndex;
Action whenComplete;
ExceptionDispatchInfo exception;
public bool IsComplete => exception != null || Volatile.Read(ref winArgumentIndex) != -1;
public WhenAnyPromise(UniTask[] tasks)
{
this.completeCount = 0;
this.winArgumentIndex = -1;
this.whenComplete = null;
this.exception = null;
for (int i = 0; i < tasks.Length; i++)
{
RunTask(tasks[i], i).Forget();
}
}
async UniTaskVoid RunTask(UniTask task, int index)
{
try
{
await task;
}
catch (Exception ex)
{
exception = ExceptionDispatchInfo.Capture(ex);
TryCallContinuation();
return;
}
var count = Interlocked.Increment(ref completeCount);
if (count == 1)
{
Volatile.Write(ref winArgumentIndex, index);
TryCallContinuation();
}
}
void TryCallContinuation()
{
var action = Interlocked.Exchange(ref whenComplete, null);
if (action != null)
{
action.Invoke();
}
}
public Awaiter GetAwaiter()
{
return new Awaiter(this);
}
public struct Awaiter : ICriticalNotifyCompletion
{
WhenAnyPromise parent;
public Awaiter(WhenAnyPromise parent)
{
this.parent = parent;
}
public bool IsCompleted
{
get
{
return parent.IsComplete;
}
}
public int GetResult()
{
if (parent.exception != null)
{
parent.exception.Throw();
}
return parent.winArgumentIndex;
}
public void OnCompleted(Action continuation)
{
UnsafeOnCompleted(continuation);
}
public void UnsafeOnCompleted(Action continuation)
{
parent.whenComplete = continuation;
if (IsCompleted)
{
var action = Interlocked.Exchange(ref parent.whenComplete, null);
if (action != null)
{
action();
}
}
}
}
}
}
}
#endif