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-3,6
+3,7
using System.Collections.Generic;
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using System.Reflection;
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using System.Reflection;
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using System.Diagnostics;
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using System.Diagnostics;
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5
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using System.Threading;
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using System.Threading;
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using Implab.Parallels;
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namespace Implab {
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namespace Implab {
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@@
-48,24
+49,53
namespace Implab {
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/// </remarks>
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/// </remarks>
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public class Promise<T> : IPromise {
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public class Promise<T> : IPromise {
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struct ResultHandlerInfo {
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struct HandlerDescriptor {
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public ResultHandler<T> resultHandler;
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public ResultHandler<T> resultHandler;
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public ErrorHandler errorHandler;
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public ErrorHandler errorHandler;
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public Action cancellHandler;
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public void Resolve(T result) {
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if (resultHandler != null)
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try {
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resultHandler(result);
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} catch (Exception e) {
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Reject(e);
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}
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}
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public void Reject(Exception err) {
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if (errorHandler != null)
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try {
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errorHandler(err);
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} catch {
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}
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}
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public void Cancel() {
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if (cancellHandler != null)
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try {
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cancellHandler();
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} catch {
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}
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}
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}
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}
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const int UnresolvedSate = 0;
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const int TransitionalState = 1;
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const int ResolvedState = 2;
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const int RejectedState = 3;
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const int CancelledState = 4;
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readonly IPromise m_parent;
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readonly IPromise m_parent;
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readonly bool m_cancellable;
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LinkedList<ResultHandlerInfo> m_resultHandlers = new LinkedList<ResultHandlerInfo>();
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LinkedList<Action> m_cancelHandlers = new LinkedList<Action>();
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readonly object m_lock = new Object();
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readonly bool m_cancellable;
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int m_childrenCount = 0;
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int m_childrenCount = 0;
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int m_state;
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PromiseState m_state;
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T m_result;
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T m_result;
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Exception m_error;
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Exception m_error;
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readonly MTQueue<HandlerDescriptor> m_handlers = new MTQueue<HandlerDescriptor>();
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public Promise() {
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public Promise() {
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m_cancellable = true;
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m_cancellable = true;
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}
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}
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@@
-73,8
+103,6
namespace Implab {
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public Promise(IPromise parent, bool cancellable) {
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public Promise(IPromise parent, bool cancellable) {
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m_cancellable = cancellable;
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m_cancellable = cancellable;
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m_parent = parent;
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m_parent = parent;
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if (parent != null)
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parent.HandleCancelled(InternalCancel);
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}
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}
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void InternalCancel() {
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void InternalCancel() {
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@@
-82,22
+110,39
namespace Implab {
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Cancel(false);
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Cancel(false);
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}
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}
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bool BeginTransit() {
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return UnresolvedSate == Interlocked.CompareExchange(ref m_state, TransitionalState, UnresolvedSate);
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}
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void CompleteTransit(int state) {
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if (TransitionalState != Interlocked.CompareExchange(ref m_state, state, TransitionalState))
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throw new InvalidOperationException("Can't complete transition when the object isn't in the transitional state");
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}
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public bool IsResolved {
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get {
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return m_state > 1;
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}
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}
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public bool IsCancelled {
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get {
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return m_state == CancelledState;
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}
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}
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/// <summary>
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/// <summary>
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/// ΠΡΠΏΠΎΠ»Π½ΡΠ΅Ρ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅, ΡΠΎΠΎΠ±ΡΠ°Ρ ΠΎΠ± ΡΡΠΏΠ΅ΡΠ½ΠΎΠΌ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ.
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/// ΠΡΠΏΠΎΠ»Π½ΡΠ΅Ρ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅, ΡΠΎΠΎΠ±ΡΠ°Ρ ΠΎΠ± ΡΡΠΏΠ΅ΡΠ½ΠΎΠΌ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ.
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/// </summary>
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/// </summary>
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/// <param name="result">Π Π΅Π·ΡΠ»ΡΡΠ°Ρ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ.</param>
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/// <param name="result">Π Π΅Π·ΡΠ»ΡΡΠ°Ρ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ.</param>
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/// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
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/// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
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public void Resolve(T result) {
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public void Resolve(T result) {
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lock (m_lock) {
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if (BeginTransit()) {
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if (m_state == PromiseState.Cancelled)
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return;
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if (m_state != PromiseState.Unresolved)
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throw new InvalidOperationException("The promise is already resolved");
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m_result = result;
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m_result = result;
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m_state = PromiseState.Resolved;
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CompleteTransit(ResolvedState);
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}
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OnStateChanged();
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} else if (m_state != CancelledState)
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OnStateChanged();
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throw new InvalidOperationException("The promise is already resolved");
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}
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}
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/// <summary>
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/// <summary>
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@@
-111,16
+156,12
namespace Implab {
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/// <param name="error">ΠΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π²ΠΎΠ·Π½ΠΈΠΊΡΠ΅Π΅ ΠΏΡΠΈ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ</param>
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/// <param name="error">ΠΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π²ΠΎΠ·Π½ΠΈΠΊΡΠ΅Π΅ ΠΏΡΠΈ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ</param>
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/// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
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/// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception>
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public void Reject(Exception error) {
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public void Reject(Exception error) {
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lock (m_lock) {
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if (BeginTransit()) {
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if (m_state == PromiseState.Cancelled || m_state == PromiseState.Rejected)
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return;
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if (m_state != PromiseState.Unresolved)
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throw new InvalidOperationException("The promise is already resolved");
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m_error = error;
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m_error = error;
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m_state = PromiseState.Rejected;
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CompleteTransit(RejectedState);
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}
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OnStateChanged();
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} else if (m_state == ResolvedState)
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OnStateChanged();
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throw new InvalidOperationException("The promise is already resolved");
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}
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}
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/// <summary>
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/// <summary>
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@@
-144,27
+185,27
namespace Implab {
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185
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var medium = new Promise<T>(this, true);
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var medium = new Promise<T>(this, true);
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var handlerInfo = new ResultHandlerInfo();
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ResultHandler<T> resultHandler;
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if (success != null)
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if (success != null)
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handlerInfo.resultHandler = x => {
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resultHandler = x => {
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success(x);
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success(x);
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medium.Resolve(x);
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medium.Resolve(x);
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};
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};
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else
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else
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handlerInfo.resultHandler = medium.Resolve;
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resultHandler = medium.Resolve;
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196
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197
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ErrorHandler errorHandler;
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if (error != null)
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if (error != null)
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158
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handlerInfo.errorHandler = x => {
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199
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errorHandler = x => {
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try {
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200
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try {
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160
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error(x);
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error(x);
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} catch { }
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} catch { }
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medium.Reject(x);
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medium.Reject(x);
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};
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};
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else
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else
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handlerInfo.errorHandler = medium.Reject;
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errorHandler = medium.Reject;
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AddHandler(handlerInfo);
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AddHandler(resultHandler, errorHandler, medium.InternalCancel);
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return medium;
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return medium;
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}
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}
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@@
-182,27
+223,28
namespace Implab {
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182
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223
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183
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var medium = new Promise<T>(this, true);
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var medium = new Promise<T>(this, true);
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184
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225
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var handlerInfo = new ResultHandlerInfo();
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ResultHandler<T> resultHandler;
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ErrorHandler errorHandler;
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if (success != null)
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if (success != null)
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handlerInfo.resultHandler = x => {
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resultHandler = x => {
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success(x);
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success(x);
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medium.Resolve(x);
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medium.Resolve(x);
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};
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};
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else
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else
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handlerInfo.resultHandler = medium.Resolve;
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resultHandler = medium.Resolve;
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if (error != null)
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if (error != null)
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handlerInfo.errorHandler = x => {
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errorHandler = x => {
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try {
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try {
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medium.Resolve(error(x));
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medium.Resolve(error(x));
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} catch { }
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} catch { }
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medium.Reject(x);
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medium.Reject(x);
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};
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};
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else
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else
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handlerInfo.errorHandler = medium.Reject;
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errorHandler = medium.Reject;
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AddHandler(handlerInfo);
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AddHandler(resultHandler, errorHandler, medium.InternalCancel);
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return medium;
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return medium;
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}
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}
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@@
-214,19
+256,17
namespace Implab {
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214
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256
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215
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var medium = new Promise<T>(this, true);
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var medium = new Promise<T>(this, true);
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var handlerInfo = new ResultHandlerInfo();
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ResultHandler<T> resultHandler;
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218
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260
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if (success != null)
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261
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if (success != null)
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handlerInfo.resultHandler = x => {
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resultHandler = x => {
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success(x);
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success(x);
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medium.Resolve(x);
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medium.Resolve(x);
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};
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};
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224
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else
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else
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handlerInfo.resultHandler = medium.Resolve;
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resultHandler = medium.Resolve;
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handlerInfo.errorHandler = medium.Reject;
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AddHandler(resultHandler, medium.Reject, medium.InternalCancel);
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AddHandler(handlerInfo);
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270
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return medium;
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return medium;
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232
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}
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272
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}
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@@
-249,15
+289,17
namespace Implab {
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249
|
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289
|
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250
|
var medium = new Promise<T>(this, true);
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290
|
var medium = new Promise<T>(this, true);
|
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251
|
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291
|
|
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252
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AddHandler(new ResultHandlerInfo {
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AddHandler(
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253
|
errorHandler = e => {
|
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293
|
null,
|
|
|
|
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294
|
e => {
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254
|
try {
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295
|
try {
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255
|
medium.Resolve(handler(e));
|
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296
|
medium.Resolve(handler(e));
|
|
256
|
} catch (Exception e2) {
|
|
297
|
} catch (Exception e2) {
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257
|
medium.Reject(e2);
|
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298
|
medium.Reject(e2);
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258
|
}
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}
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259
|
}
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300
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},
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260
|
});
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301
|
medium.InternalCancel
|
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302
|
);
|
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261
|
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303
|
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262
|
return medium;
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304
|
return medium;
|
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263
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}
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305
|
}
|
|
@@
-268,8
+310,8
namespace Implab {
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268
|
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310
|
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269
|
var medium = new Promise<T>();
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311
|
var medium = new Promise<T>();
|
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270
|
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312
|
|
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271
|
AddHandler(new ResultHandlerInfo {
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313
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AddHandler(
|
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272
|
resultHandler = x => {
|
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314
|
x => {
|
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273
|
// to avoid handler being called multiple times we handle exception by ourselfs
|
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315
|
// to avoid handler being called multiple times we handle exception by ourselfs
|
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274
|
try {
|
|
316
|
try {
|
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275
|
handler();
|
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317
|
handler();
|
|
@@
-278,13
+320,16
namespace Implab {
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278
|
medium.Reject(e);
|
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320
|
medium.Reject(e);
|
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279
|
}
|
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321
|
}
|
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280
|
},
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322
|
},
|
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281
|
errorHandler = x => {
|
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323
|
|
|
|
|
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324
|
e => {
|
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282
|
try {
|
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325
|
try {
|
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283
|
handler();
|
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326
|
handler();
|
|
284
|
} catch { }
|
|
327
|
} catch { }
|
|
285
|
medium.Reject(x);
|
|
328
|
medium.Reject(e);
|
|
286
|
}
|
|
329
|
},
|
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287
|
});
|
|
330
|
|
|
|
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331
|
medium.InternalCancel
|
|
|
|
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332
|
);
|
|
288
|
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333
|
|
|
289
|
return medium;
|
|
334
|
return medium;
|
|
290
|
}
|
|
335
|
}
|
|
@@
-304,17
+349,22
namespace Implab {
|
|
304
|
// ΡΠΎΠ·Π΄Π°Π΅ΠΌ ΠΏΡΠΈΡΠ΅ΠΏΠ»Π΅Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅
|
|
349
|
// ΡΠΎΠ·Π΄Π°Π΅ΠΌ ΠΏΡΠΈΡΠ΅ΠΏΠ»Π΅Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅
|
|
305
|
var chained = new Promise<TNew>();
|
|
350
|
var chained = new Promise<TNew>();
|
|
306
|
|
|
351
|
|
|
307
|
AddHandler(new ResultHandlerInfo() {
|
|
352
|
ResultHandler<T> resultHandler = result => chained.Resolve(mapper(result));
|
|
308
|
resultHandler = result => chained.Resolve(mapper(result)),
|
|
353
|
ErrorHandler errorHandler = delegate(Exception e) {
|
|
309
|
errorHandler = delegate(Exception e) {
|
|
354
|
if (error != null)
|
|
310
|
if (error != null)
|
|
355
|
try {
|
|
311
|
try {
|
|
356
|
error(e);
|
|
312
|
error(e);
|
|
357
|
} catch { }
|
|
313
|
} catch { }
|
|
358
|
// Π² ΡΠ»ΡΡΠ°Π΅ ΠΎΡΠΈΠ±ΠΊΠΈ Π½ΡΠΆΠ½ΠΎ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π΄Π°Π»ΡΡΠ΅ ΠΏΠΎ ΡΠ΅ΠΏΠΎΡΠΊΠ΅
|
|
314
|
// Π² ΡΠ»ΡΡΠ°Π΅ ΠΎΡΠΈΠ±ΠΊΠΈ Π½ΡΠΆΠ½ΠΎ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π΄Π°Π»ΡΡΠ΅ ΠΏΠΎ ΡΠ΅ΠΏΠΎΡΠΊΠ΅
|
|
359
|
chained.Reject(e);
|
|
315
|
chained.Reject(e);
|
|
360
|
};
|
|
316
|
}
|
|
361
|
|
|
317
|
});
|
|
362
|
|
|
|
|
|
363
|
AddHandler(
|
|
|
|
|
364
|
resultHandler,
|
|
|
|
|
365
|
errorHandler,
|
|
|
|
|
366
|
chained.InternalCancel
|
|
|
|
|
367
|
);
|
|
318
|
|
|
368
|
|
|
319
|
return chained;
|
|
369
|
return chained;
|
|
320
|
}
|
|
370
|
}
|
|
@@
-341,27
+391,32
namespace Implab {
|
|
341
|
// ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΡΠ΅ΡΠ΅Π· Π½Π΅Π³ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°Π±ΠΎΡΡ.
|
|
391
|
// ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΡΠ΅ΡΠ΅Π· Π½Π΅Π³ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°Π±ΠΎΡΡ.
|
|
342
|
var medium = new Promise<TNew>(this, true);
|
|
392
|
var medium = new Promise<TNew>(this, true);
|
|
343
|
|
|
393
|
|
|
344
|
AddHandler(new ResultHandlerInfo {
|
|
394
|
ResultHandler<T> resultHandler = delegate(T result) {
|
|
345
|
resultHandler = delegate(T result) {
|
|
395
|
if (medium.IsCancelled)
|
|
346
|
if (medium.State == PromiseState.Cancelled)
|
|
396
|
return;
|
|
347
|
return;
|
|
|
|
|
348
|
|
|
397
|
|
|
349
|
var promise = chained(result);
|
|
398
|
var promise = chained(result);
|
|
350
|
|
|
399
|
|
|
351
|
// notify chained operation that it's not needed
|
|
400
|
// notify chained operation that it's not needed
|
|
352
|
medium.Cancelled(() => promise.Cancel());
|
|
401
|
medium.Cancelled(() => promise.Cancel());
|
|
353
|
promise.Then(
|
|
402
|
promise.Then(
|
|
354
|
x => medium.Resolve(x),
|
|
403
|
x => medium.Resolve(x),
|
|
355
|
e => medium.Reject(e)
|
|
404
|
e => medium.Reject(e)
|
|
356
|
);
|
|
405
|
);
|
|
357
|
},
|
|
406
|
};
|
|
358
|
errorHandler = delegate(Exception e) {
|
|
407
|
|
|
359
|
if (error != null)
|
|
408
|
ErrorHandler errorHandler = delegate(Exception e) {
|
|
360
|
error(e);
|
|
409
|
if (error != null)
|
|
361
|
// Π² ΡΠ»ΡΡΠ°Π΅ ΠΎΡΠΈΠ±ΠΊΠΈ Π½ΡΠΆΠ½ΠΎ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π΄Π°Π»ΡΡΠ΅ ΠΏΠΎ ΡΠ΅ΠΏΠΎΡΠΊΠ΅
|
|
410
|
error(e);
|
|
362
|
medium.Reject(e);
|
|
411
|
// Π² ΡΠ»ΡΡΠ°Π΅ ΠΎΡΠΈΠ±ΠΊΠΈ Π½ΡΠΆΠ½ΠΎ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π΄Π°Π»ΡΡΠ΅ ΠΏΠΎ ΡΠ΅ΠΏΠΎΡΠΊΠ΅
|
|
363
|
}
|
|
412
|
medium.Reject(e);
|
|
364
|
});
|
|
413
|
};
|
|
|
|
|
414
|
|
|
|
|
|
415
|
AddHandler(
|
|
|
|
|
416
|
resultHandler,
|
|
|
|
|
417
|
errorHandler,
|
|
|
|
|
418
|
medium.InternalCancel
|
|
|
|
|
419
|
);
|
|
365
|
|
|
420
|
|
|
366
|
return medium;
|
|
421
|
return medium;
|
|
367
|
}
|
|
422
|
}
|
|
@@
-371,19
+426,19
namespace Implab {
|
|
371
|
}
|
|
426
|
}
|
|
372
|
|
|
427
|
|
|
373
|
public Promise<T> Cancelled(Action handler) {
|
|
428
|
public Promise<T> Cancelled(Action handler) {
|
|
374
|
if (handler == null)
|
|
429
|
AddHandler(null, null, handler);
|
|
375
|
return this;
|
|
|
|
|
376
|
lock (m_lock) {
|
|
|
|
|
377
|
if (m_state == PromiseState.Unresolved)
|
|
|
|
|
378
|
m_cancelHandlers.AddLast(handler);
|
|
|
|
|
379
|
else if (m_state == PromiseState.Cancelled)
|
|
|
|
|
380
|
handler();
|
|
|
|
|
381
|
}
|
|
|
|
|
382
|
return this;
|
|
430
|
return this;
|
|
383
|
}
|
|
431
|
}
|
|
384
|
|
|
432
|
|
|
385
|
public void HandleCancelled(Action handler) {
|
|
433
|
public Promise<T> Finally(Action handler) {
|
|
386
|
Cancelled(handler);
|
|
434
|
if (handler == null)
|
|
|
|
|
435
|
throw new ArgumentNullException("handler");
|
|
|
|
|
436
|
AddHandler(
|
|
|
|
|
437
|
x => handler(),
|
|
|
|
|
438
|
e => handler(),
|
|
|
|
|
439
|
handler
|
|
|
|
|
440
|
);
|
|
|
|
|
441
|
return this;
|
|
387
|
}
|
|
442
|
}
|
|
388
|
|
|
443
|
|
|
389
|
/// <summary>
|
|
444
|
/// <summary>
|
|
@@
-415,15
+470,15
namespace Implab {
|
|
415
|
if (!evt.WaitOne(timeout, true))
|
|
470
|
if (!evt.WaitOne(timeout, true))
|
|
416
|
throw new TimeoutException();
|
|
471
|
throw new TimeoutException();
|
|
417
|
|
|
472
|
|
|
418
|
switch (State) {
|
|
473
|
switch (m_state) {
|
|
419
|
case PromiseState.Resolved:
|
|
474
|
case ResolvedState:
|
|
420
|
return m_result;
|
|
475
|
return m_result;
|
|
421
|
case PromiseState.Cancelled:
|
|
476
|
case CancelledState:
|
|
422
|
throw new OperationCanceledException();
|
|
477
|
throw new OperationCanceledException();
|
|
423
|
case PromiseState.Rejected:
|
|
478
|
case RejectedState:
|
|
424
|
throw new TargetInvocationException(m_error);
|
|
479
|
throw new TargetInvocationException(m_error);
|
|
425
|
default:
|
|
480
|
default:
|
|
426
|
throw new ApplicationException(String.Format("Invalid promise state {0}", State));
|
|
481
|
throw new ApplicationException(String.Format("Invalid promise state {0}", m_state));
|
|
427
|
}
|
|
482
|
}
|
|
428
|
}
|
|
483
|
}
|
|
429
|
|
|
484
|
|
|
@@
-431,40
+486,45
namespace Implab {
|
|
431
|
return Join(Timeout.Infinite);
|
|
486
|
return Join(Timeout.Infinite);
|
|
432
|
}
|
|
487
|
}
|
|
433
|
|
|
488
|
|
|
434
|
void AddHandler(ResultHandlerInfo handler) {
|
|
489
|
void AddHandler(ResultHandler<T> success, ErrorHandler error, Action cancel) {
|
|
435
|
bool invokeRequired = false;
|
|
490
|
Interlocked.Increment(ref m_childrenCount);
|
|
|
|
|
491
|
|
|
|
|
|
492
|
HandlerDescriptor handler = new HandlerDescriptor {
|
|
|
|
|
493
|
resultHandler = success,
|
|
|
|
|
494
|
errorHandler = error,
|
|
|
|
|
495
|
cancellHandler = cancel
|
|
|
|
|
496
|
};
|
|
436
|
|
|
497
|
|
|
437
|
lock (m_lock) {
|
|
498
|
bool queued;
|
|
438
|
m_childrenCount++;
|
|
499
|
|
|
439
|
if (m_state == PromiseState.Unresolved) {
|
|
500
|
if (!IsResolved) {
|
|
440
|
m_resultHandlers.AddLast(handler);
|
|
501
|
m_handlers.Enqueue(handler);
|
|
441
|
} else
|
|
502
|
queued = true;
|
|
442
|
invokeRequired = true;
|
|
503
|
} else {
|
|
|
|
|
504
|
// the promise is in resolved state, just invoke the handled with minimum overhead
|
|
|
|
|
505
|
queued = false;
|
|
|
|
|
506
|
InvokeHandler(handler);
|
|
443
|
}
|
|
507
|
}
|
|
444
|
|
|
508
|
|
|
445
|
// ΠΎΠ±ΡΠ°Π±ΠΎΡΡΠΈΠΊΠΈ Π½Π΅ Π΄ΠΎΠ»ΠΆΠ½Ρ Π±Π»ΠΎΠΊΠΈΡΠΎΠ²Π°ΡΡ ΡΠ°ΠΌ ΠΎΠ±ΡΠ΅ΠΊΡ
|
|
509
|
if (queued && IsResolved && m_handlers.TryDequeue(out handler))
|
|
446
|
if (invokeRequired)
|
|
510
|
// if the promise have been resolved while we was adding handler to the queue
|
|
|
|
|
511
|
// we can't guarantee that someone is still processing it
|
|
|
|
|
512
|
// therefore we will fetch a handler from the queue and execute it
|
|
|
|
|
513
|
// note that fetched handler may be not the one we have added
|
|
447
|
InvokeHandler(handler);
|
|
514
|
InvokeHandler(handler);
|
|
|
|
|
515
|
|
|
448
|
}
|
|
516
|
}
|
|
449
|
|
|
517
|
|
|
450
|
void InvokeHandler(ResultHandlerInfo handler) {
|
|
518
|
void InvokeHandler(HandlerDescriptor handler) {
|
|
451
|
switch (m_state) {
|
|
519
|
switch (m_state) {
|
|
452
|
case PromiseState.Resolved:
|
|
520
|
case ResolvedState:
|
|
453
|
try {
|
|
521
|
handler.Resolve(m_result);
|
|
454
|
if (handler.resultHandler != null)
|
|
|
|
|
455
|
handler.resultHandler(m_result);
|
|
|
|
|
456
|
} catch (Exception e) {
|
|
|
|
|
457
|
try {
|
|
|
|
|
458
|
if (handler.errorHandler != null)
|
|
|
|
|
459
|
handler.errorHandler(e);
|
|
|
|
|
460
|
} catch { }
|
|
|
|
|
461
|
}
|
|
|
|
|
462
|
break;
|
|
522
|
break;
|
|
463
|
case PromiseState.Rejected:
|
|
523
|
case RejectedState:
|
|
464
|
try {
|
|
524
|
handler.Reject(m_error);
|
|
465
|
if (handler.errorHandler != null)
|
|
525
|
break;
|
|
466
|
handler.errorHandler(m_error);
|
|
526
|
case CancelledState:
|
|
467
|
} catch { }
|
|
527
|
handler.Cancel();
|
|
468
|
break;
|
|
528
|
break;
|
|
469
|
default:
|
|
529
|
default:
|
|
470
|
// do nothing
|
|
530
|
// do nothing
|
|
@@
-473,76
+533,31
namespace Implab {
|
|
473
|
}
|
|
533
|
}
|
|
474
|
|
|
534
|
|
|
475
|
protected virtual void OnStateChanged() {
|
|
535
|
protected virtual void OnStateChanged() {
|
|
476
|
switch (m_state) {
|
|
536
|
HandlerDescriptor handler;
|
|
477
|
case PromiseState.Resolved:
|
|
537
|
while (m_handlers.TryDequeue(out handler))
|
|
478
|
foreach (var resultHandlerInfo in m_resultHandlers)
|
|
538
|
InvokeHandler(handler);
|
|
479
|
try {
|
|
|
|
|
480
|
if (resultHandlerInfo.resultHandler != null)
|
|
|
|
|
481
|
resultHandlerInfo.resultHandler(m_result);
|
|
|
|
|
482
|
} catch (Exception e) {
|
|
|
|
|
483
|
try {
|
|
|
|
|
484
|
if (resultHandlerInfo.errorHandler != null)
|
|
|
|
|
485
|
resultHandlerInfo.errorHandler(e);
|
|
|
|
|
486
|
} catch { }
|
|
|
|
|
487
|
}
|
|
|
|
|
488
|
break;
|
|
|
|
|
489
|
case PromiseState.Cancelled:
|
|
|
|
|
490
|
foreach (var cancelHandler in m_cancelHandlers)
|
|
|
|
|
491
|
cancelHandler();
|
|
|
|
|
492
|
break;
|
|
|
|
|
493
|
case PromiseState.Rejected:
|
|
|
|
|
494
|
foreach (var resultHandlerInfo in m_resultHandlers)
|
|
|
|
|
495
|
try {
|
|
|
|
|
496
|
if (resultHandlerInfo.errorHandler != null)
|
|
|
|
|
497
|
resultHandlerInfo.errorHandler(m_error);
|
|
|
|
|
498
|
} catch { }
|
|
|
|
|
499
|
break;
|
|
|
|
|
500
|
default:
|
|
|
|
|
501
|
throw new InvalidOperationException(String.Format("Promise entered an invalid state {0}", m_state));
|
|
|
|
|
502
|
}
|
|
|
|
|
503
|
|
|
|
|
|
504
|
m_resultHandlers = null;
|
|
|
|
|
505
|
m_cancelHandlers = null;
|
|
|
|
|
506
|
}
|
|
539
|
}
|
|
507
|
|
|
540
|
|
|
508
|
|
|
541
|
|
|
509
|
|
|
542
|
|
|
510
|
public bool IsExclusive {
|
|
543
|
public bool IsExclusive {
|
|
511
|
get {
|
|
544
|
get {
|
|
512
|
lock (m_lock) {
|
|
545
|
return m_childrenCount <= 1;
|
|
513
|
return m_childrenCount <= 1;
|
|
|
|
|
514
|
}
|
|
|
|
|
515
|
}
|
|
|
|
|
516
|
}
|
|
|
|
|
517
|
|
|
|
|
|
518
|
public PromiseState State {
|
|
|
|
|
519
|
get {
|
|
|
|
|
520
|
lock (m_lock) {
|
|
|
|
|
521
|
return m_state;
|
|
|
|
|
522
|
}
|
|
|
|
|
523
|
}
|
|
546
|
}
|
|
524
|
}
|
|
547
|
}
|
|
525
|
|
|
548
|
|
|
526
|
protected bool Cancel(bool dependencies) {
|
|
549
|
protected bool Cancel(bool dependencies) {
|
|
527
|
bool result;
|
|
550
|
if (BeginTransit()) {
|
|
528
|
|
|
551
|
CompleteTransit(CancelledState);
|
|
529
|
lock (m_lock) {
|
|
|
|
|
530
|
if (m_state == PromiseState.Unresolved) {
|
|
|
|
|
531
|
m_state = PromiseState.Cancelled;
|
|
|
|
|
532
|
result = true;
|
|
|
|
|
533
|
} else {
|
|
|
|
|
534
|
result = false;
|
|
|
|
|
535
|
}
|
|
|
|
|
536
|
}
|
|
|
|
|
537
|
|
|
|
|
|
538
|
if (result)
|
|
|
|
|
539
|
OnStateChanged();
|
|
552
|
OnStateChanged();
|
|
540
|
|
|
553
|
|
|
541
|
if (dependencies && m_parent != null && m_parent.IsExclusive) {
|
|
554
|
if (dependencies && m_parent != null && m_parent.IsExclusive)
|
|
542
|
m_parent.Cancel();
|
|
555
|
m_parent.Cancel();
|
|
|
|
|
556
|
|
|
|
|
|
557
|
return true;
|
|
|
|
|
558
|
} else {
|
|
|
|
|
559
|
return false;
|
|
543
|
}
|
|
560
|
}
|
|
544
|
|
|
|
|
|
545
|
return result;
|
|
|
|
|
546
|
}
|
|
561
|
}
|
|
547
|
|
|
562
|
|
|
548
|
}
|
|
563
|
}
|