@@ -14,7 +14,7 namespace Implab.Test { | |||||
14 | p.Then(x => res = x); |
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14 | p.Then(x => res = x); | |
15 | p.Resolve(100); |
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15 | p.Resolve(100); | |
16 |
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16 | |||
17 |
Assert.AreEqual( |
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17 | Assert.AreEqual(100, res); | |
18 | } |
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18 | } | |
19 |
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19 | |||
20 | [TestMethod] |
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20 | [TestMethod] | |
@@ -244,7 +244,7 namespace Implab.Test { | |||||
244 | [TestMethod] |
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244 | [TestMethod] | |
245 | public void ChainedMapTest() { |
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245 | public void ChainedMapTest() { | |
246 |
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246 | |||
247 |
using (var pool = new WorkerPool( |
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247 | using (var pool = new WorkerPool(4,4,0)) { | |
248 | int count = 10000; |
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248 | int count = 10000; | |
249 |
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249 | |||
250 | double[] args = new double[count]; |
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250 | double[] args = new double[count]; |
1 | NO CONTENT: modified file, binary diff hidden |
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NO CONTENT: modified file, binary diff hidden |
@@ -15,19 +15,6 namespace Implab | |||||
15 | get; |
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15 | get; | |
16 | } |
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16 | } | |
17 |
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17 | |||
18 | /// <summary> |
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19 | /// The current state of the promise. |
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20 | /// </summary> |
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21 | PromiseState State |
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22 | { |
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23 | get; |
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24 | } |
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25 |
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18 | |||
26 | /// <summary> |
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27 | /// Registers handler for the case when the promise is cencelled. If the promise already cancelled the |
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28 | /// handler will be invoked immediatelly. |
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29 | /// </summary> |
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30 | /// <param name="handler">The handler</param> |
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31 | void HandleCancelled(Action handler); |
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32 | } |
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19 | } | |
33 | } |
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20 | } |
@@ -140,7 +140,7 namespace Implab.Parallels { | |||||
140 |
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140 | |||
141 | AsyncPool.InvokeNewThread(() => { |
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141 | AsyncPool.InvokeNewThread(() => { | |
142 | for (int i = 0; i < source.Length; i++) { |
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142 | for (int i = 0; i < source.Length; i++) { | |
143 |
if(promise. |
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143 | if(promise.IsResolved) | |
144 | break; // stop processing in case of error or cancellation |
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144 | break; // stop processing in case of error or cancellation | |
145 | var idx = i; |
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145 | var idx = i; | |
146 | semaphore.WaitOne(); |
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146 | semaphore.WaitOne(); |
@@ -42,12 +42,13 namespace Implab.Parallels { | |||||
42 | next = first.next; |
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42 | next = first.next; | |
43 | if (next == null) { |
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43 | if (next == null) { | |
44 | // this is the last element, |
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44 | // this is the last element, | |
45 | // then try to update tail |
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45 | // then try to update the tail | |
46 | if (first != Interlocked.CompareExchange(ref m_last, null, first)) { |
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46 | if (first != Interlocked.CompareExchange(ref m_last, null, first)) { | |
47 |
// this is |
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47 | // this is a ace condition | |
48 | if (m_last == null) |
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48 | if (m_last == null) | |
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49 | // the queue is empty | |||
49 | return false; |
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50 | return false; | |
50 |
// tail has been changed, tha |
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51 | // tail has been changed, than we need to restart | |
51 | continue; |
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52 | continue; | |
52 | } |
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53 | } | |
53 |
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54 |
@@ -3,6 +3,7 using System.Collections.Generic; | |||||
3 | using System.Reflection; |
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3 | using System.Reflection; | |
4 | using System.Diagnostics; |
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4 | using System.Diagnostics; | |
5 | using System.Threading; |
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5 | using System.Threading; | |
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6 | using Implab.Parallels; | |||
6 |
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7 | |||
7 | namespace Implab { |
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8 | namespace Implab { | |
8 |
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9 | |||
@@ -48,24 +49,53 namespace Implab { | |||||
48 | /// </remarks> |
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49 | /// </remarks> | |
49 | public class Promise<T> : IPromise { |
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50 | public class Promise<T> : IPromise { | |
50 |
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51 | |||
51 |
struct |
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52 | struct HandlerDescriptor { | |
52 | public ResultHandler<T> resultHandler; |
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53 | public ResultHandler<T> resultHandler; | |
53 | public ErrorHandler errorHandler; |
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54 | public ErrorHandler errorHandler; | |
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55 | public Action cancellHandler; | |||
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56 | ||||
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57 | public void Resolve(T result) { | |||
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58 | if (resultHandler != null) | |||
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59 | try { | |||
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60 | resultHandler(result); | |||
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61 | } catch (Exception e) { | |||
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62 | Reject(e); | |||
54 | } |
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63 | } | |
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64 | } | |||
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65 | ||||
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66 | public void Reject(Exception err) { | |||
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67 | if (errorHandler != null) | |||
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68 | try { | |||
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69 | errorHandler(err); | |||
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70 | } catch { | |||
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71 | } | |||
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72 | } | |||
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73 | ||||
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74 | public void Cancel() { | |||
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75 | if (cancellHandler != null) | |||
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76 | try { | |||
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77 | cancellHandler(); | |||
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78 | } catch { | |||
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79 | } | |||
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80 | } | |||
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81 | } | |||
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82 | ||||
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83 | const int UnresolvedSate = 0; | |||
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84 | const int TransitionalState = 1; | |||
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85 | const int ResolvedState = 2; | |||
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86 | const int RejectedState = 3; | |||
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87 | const int CancelledState = 4; | |||
55 |
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88 | |||
56 | readonly IPromise m_parent; |
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89 | readonly IPromise m_parent; | |
57 |
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90 | readonly bool m_cancellable; | ||
58 | LinkedList<ResultHandlerInfo> m_resultHandlers = new LinkedList<ResultHandlerInfo>(); |
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59 | LinkedList<Action> m_cancelHandlers = new LinkedList<Action>(); |
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60 |
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91 | |||
61 | readonly object m_lock = new Object(); |
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62 | readonly bool m_cancellable; |
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63 | int m_childrenCount = 0; |
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92 | int m_childrenCount = 0; | |
64 |
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93 | int m_state; | ||
65 | PromiseState m_state; |
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66 | T m_result; |
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94 | T m_result; | |
67 | Exception m_error; |
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95 | Exception m_error; | |
68 |
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96 | |||
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97 | readonly MTQueue<HandlerDescriptor> m_handlers = new MTQueue<HandlerDescriptor>(); | |||
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98 | ||||
69 | public Promise() { |
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99 | public Promise() { | |
70 | m_cancellable = true; |
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100 | m_cancellable = true; | |
71 | } |
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101 | } | |
@@ -73,8 +103,6 namespace Implab { | |||||
73 | public Promise(IPromise parent, bool cancellable) { |
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103 | public Promise(IPromise parent, bool cancellable) { | |
74 | m_cancellable = cancellable; |
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104 | m_cancellable = cancellable; | |
75 | m_parent = parent; |
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105 | m_parent = parent; | |
76 | if (parent != null) |
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77 | parent.HandleCancelled(InternalCancel); |
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78 | } |
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106 | } | |
79 |
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107 | |||
80 | void InternalCancel() { |
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108 | void InternalCancel() { | |
@@ -82,22 +110,39 namespace Implab { | |||||
82 | Cancel(false); |
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110 | Cancel(false); | |
83 | } |
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111 | } | |
84 |
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112 | |||
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113 | bool BeginTransit() { | |||
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114 | return UnresolvedSate == Interlocked.CompareExchange(ref m_state, TransitionalState, UnresolvedSate); | |||
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115 | } | |||
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116 | ||||
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117 | void CompleteTransit(int state) { | |||
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118 | if (TransitionalState != Interlocked.CompareExchange(ref m_state, state, TransitionalState)) | |||
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119 | throw new InvalidOperationException("Can't complete transition when the object isn't in the transitional state"); | |||
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120 | } | |||
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121 | ||||
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122 | public bool IsResolved { | |||
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123 | get { | |||
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124 | return m_state > 1; | |||
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125 | } | |||
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126 | } | |||
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127 | ||||
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128 | public bool IsCancelled { | |||
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129 | get { | |||
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130 | return m_state == CancelledState; | |||
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131 | } | |||
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132 | } | |||
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133 | ||||
85 | /// <summary> |
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134 | /// <summary> | |
86 | /// ΠΡΠΏΠΎΠ»Π½ΡΠ΅Ρ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅, ΡΠΎΠΎΠ±ΡΠ°Ρ ΠΎΠ± ΡΡΠΏΠ΅ΡΠ½ΠΎΠΌ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ. |
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135 | /// ΠΡΠΏΠΎΠ»Π½ΡΠ΅Ρ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅, ΡΠΎΠΎΠ±ΡΠ°Ρ ΠΎΠ± ΡΡΠΏΠ΅ΡΠ½ΠΎΠΌ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ. | |
87 | /// </summary> |
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136 | /// </summary> | |
88 | /// <param name="result">Π Π΅Π·ΡΠ»ΡΡΠ°Ρ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ.</param> |
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137 | /// <param name="result">Π Π΅Π·ΡΠ»ΡΡΠ°Ρ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ.</param> | |
89 | /// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception> |
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138 | /// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception> | |
90 | public void Resolve(T result) { |
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139 | public void Resolve(T result) { | |
91 | lock (m_lock) { |
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140 | if (BeginTransit()) { | |
92 | if (m_state == PromiseState.Cancelled) |
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141 | m_result = result; | |
93 | return; |
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142 | CompleteTransit(ResolvedState); | |
94 | if (m_state != PromiseState.Unresolved) |
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143 | OnStateChanged(); | |
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144 | } else if (m_state != CancelledState) | |||
95 |
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145 | throw new InvalidOperationException("The promise is already resolved"); | |
96 | m_result = result; |
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97 | m_state = PromiseState.Resolved; |
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98 | } |
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99 |
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100 | OnStateChanged(); |
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101 | } |
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146 | } | |
102 |
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147 | |||
103 | /// <summary> |
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148 | /// <summary> | |
@@ -111,16 +156,12 namespace Implab { | |||||
111 | /// <param name="error">ΠΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π²ΠΎΠ·Π½ΠΈΠΊΡΠ΅Π΅ ΠΏΡΠΈ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ</param> |
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156 | /// <param name="error">ΠΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π²ΠΎΠ·Π½ΠΈΠΊΡΠ΅Π΅ ΠΏΡΠΈ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ</param> | |
112 | /// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception> |
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157 | /// <exception cref="InvalidOperationException">ΠΠ°Π½Π½ΠΎΠ΅ ΠΎΠ±Π΅ΡΠ°Π½ΠΈΠ΅ ΡΠΆΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ</exception> | |
113 | public void Reject(Exception error) { |
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158 | public void Reject(Exception error) { | |
114 | lock (m_lock) { |
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159 | if (BeginTransit()) { | |
115 | if (m_state == PromiseState.Cancelled || m_state == PromiseState.Rejected) |
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160 | m_error = error; | |
116 | return; |
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161 | CompleteTransit(RejectedState); | |
117 | if (m_state != PromiseState.Unresolved) |
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162 | OnStateChanged(); | |
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163 | } else if (m_state == ResolvedState) | |||
118 |
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164 | throw new InvalidOperationException("The promise is already resolved"); | |
119 | m_error = error; |
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120 | m_state = PromiseState.Rejected; |
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121 | } |
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122 |
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123 | OnStateChanged(); |
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124 | } |
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165 | } | |
125 |
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166 | |||
126 | /// <summary> |
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167 | /// <summary> | |
@@ -144,27 +185,27 namespace Implab { | |||||
144 |
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185 | |||
145 | var medium = new Promise<T>(this, true); |
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186 | var medium = new Promise<T>(this, true); | |
146 |
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187 | |||
147 | var handlerInfo = new ResultHandlerInfo(); |
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188 | ResultHandler<T> resultHandler; | |
148 |
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149 | if (success != null) |
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189 | if (success != null) | |
150 |
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190 | resultHandler = x => { | |
151 | success(x); |
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191 | success(x); | |
152 | medium.Resolve(x); |
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192 | medium.Resolve(x); | |
153 | }; |
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193 | }; | |
154 | else |
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194 | else | |
155 |
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195 | resultHandler = medium.Resolve; | |
156 |
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196 | |||
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197 | ErrorHandler errorHandler; | |||
157 | if (error != null) |
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198 | if (error != null) | |
158 |
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199 | errorHandler = x => { | |
159 | try { |
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200 | try { | |
160 | error(x); |
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201 | error(x); | |
161 | } catch { } |
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202 | } catch { } | |
162 | medium.Reject(x); |
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203 | medium.Reject(x); | |
163 | }; |
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204 | }; | |
164 | else |
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205 | else | |
165 |
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206 | errorHandler = medium.Reject; | |
166 |
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207 | |||
167 | AddHandler(handlerInfo); |
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208 | AddHandler(resultHandler, errorHandler, medium.InternalCancel); | |
168 |
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209 | |||
169 | return medium; |
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210 | return medium; | |
170 | } |
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211 | } | |
@@ -182,27 +223,28 namespace Implab { | |||||
182 |
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223 | |||
183 | var medium = new Promise<T>(this, true); |
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224 | var medium = new Promise<T>(this, true); | |
184 |
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225 | |||
185 | var handlerInfo = new ResultHandlerInfo(); |
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226 | ResultHandler<T> resultHandler; | |
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227 | ErrorHandler errorHandler; | |||
186 |
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228 | |||
187 | if (success != null) |
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229 | if (success != null) | |
188 |
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230 | resultHandler = x => { | |
189 | success(x); |
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231 | success(x); | |
190 | medium.Resolve(x); |
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232 | medium.Resolve(x); | |
191 | }; |
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233 | }; | |
192 | else |
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234 | else | |
193 |
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235 | resultHandler = medium.Resolve; | |
194 |
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236 | |||
195 | if (error != null) |
|
237 | if (error != null) | |
196 |
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238 | errorHandler = x => { | |
197 | try { |
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239 | try { | |
198 | medium.Resolve(error(x)); |
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240 | medium.Resolve(error(x)); | |
199 | } catch { } |
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241 | } catch { } | |
200 | medium.Reject(x); |
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242 | medium.Reject(x); | |
201 | }; |
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243 | }; | |
202 | else |
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244 | else | |
203 |
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245 | errorHandler = medium.Reject; | |
204 |
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246 | |||
205 | AddHandler(handlerInfo); |
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247 | AddHandler(resultHandler, errorHandler, medium.InternalCancel); | |
206 |
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248 | |||
207 | return medium; |
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249 | return medium; | |
208 | } |
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250 | } | |
@@ -214,19 +256,17 namespace Implab { | |||||
214 |
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256 | |||
215 | var medium = new Promise<T>(this, true); |
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257 | var medium = new Promise<T>(this, true); | |
216 |
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258 | |||
217 | var handlerInfo = new ResultHandlerInfo(); |
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259 | ResultHandler<T> resultHandler; | |
218 |
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260 | |||
219 | if (success != null) |
|
261 | if (success != null) | |
220 |
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262 | resultHandler = x => { | |
221 | success(x); |
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263 | success(x); | |
222 | medium.Resolve(x); |
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264 | medium.Resolve(x); | |
223 | }; |
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265 | }; | |
224 | else |
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266 | else | |
225 |
|
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267 | resultHandler = medium.Resolve; | |
226 |
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268 | |||
227 | handlerInfo.errorHandler = medium.Reject; |
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269 | AddHandler(resultHandler, medium.Reject, medium.InternalCancel); | |
228 |
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229 | AddHandler(handlerInfo); |
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230 |
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270 | |||
231 | return medium; |
|
271 | return medium; | |
232 | } |
|
272 | } | |
@@ -249,15 +289,17 namespace Implab { | |||||
249 |
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289 | |||
250 | var medium = new Promise<T>(this, true); |
|
290 | var medium = new Promise<T>(this, true); | |
251 |
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291 | |||
252 |
AddHandler( |
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292 | AddHandler( | |
253 |
|
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293 | null, | |
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294 | e => { | |||
254 | try { |
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295 | try { | |
255 | medium.Resolve(handler(e)); |
|
296 | medium.Resolve(handler(e)); | |
256 | } catch (Exception e2) { |
|
297 | } catch (Exception e2) { | |
257 | medium.Reject(e2); |
|
298 | medium.Reject(e2); | |
258 | } |
|
299 | } | |
259 | } |
|
300 | }, | |
260 | }); |
|
301 | medium.InternalCancel | |
|
302 | ); | |||
261 |
|
303 | |||
262 | return medium; |
|
304 | return medium; | |
263 | } |
|
305 | } | |
@@ -268,8 +310,8 namespace Implab { | |||||
268 |
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310 | |||
269 | var medium = new Promise<T>(); |
|
311 | var medium = new Promise<T>(); | |
270 |
|
312 | |||
271 |
AddHandler( |
|
313 | AddHandler( | |
272 |
|
|
314 | x => { | |
273 | // to avoid handler being called multiple times we handle exception by ourselfs |
|
315 | // to avoid handler being called multiple times we handle exception by ourselfs | |
274 | try { |
|
316 | try { | |
275 | handler(); |
|
317 | handler(); | |
@@ -278,13 +320,16 namespace Implab { | |||||
278 | medium.Reject(e); |
|
320 | medium.Reject(e); | |
279 | } |
|
321 | } | |
280 | }, |
|
322 | }, | |
281 | errorHandler = x => { |
|
323 | ||
|
324 | e => { | |||
282 | try { |
|
325 | try { | |
283 | handler(); |
|
326 | handler(); | |
284 | } catch { } |
|
327 | } catch { } | |
285 |
medium.Reject( |
|
328 | medium.Reject(e); | |
286 | } |
|
329 | }, | |
287 | }); |
|
330 | ||
|
331 | medium.InternalCancel | |||
|
332 | ); | |||
288 |
|
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) { |
|
|||
310 |
|
|
354 | if (error != null) | |
311 |
|
|
355 | try { | |
312 |
|
|
356 | error(e); | |
313 |
|
|
357 | } catch { } | |
314 |
|
|
358 | // Π² ΡΠ»ΡΡΠ°Π΅ ΠΎΡΠΈΠ±ΠΊΠΈ Π½ΡΠΆΠ½ΠΎ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π΄Π°Π»ΡΡΠ΅ ΠΏΠΎ ΡΠ΅ΠΏΠΎΡΠΊΠ΅ | |
315 |
|
|
359 | chained.Reject(e); | |
316 |
|
|
360 | }; | |
317 | }); |
|
361 | ||
|
362 | ||||
|
363 | AddHandler( | |||
|
364 | resultHandler, | |||
|
365 | errorHandler, | |||
|
366 | chained.InternalCancel | |||
|
367 | ); | |||
318 |
|
368 | |||
319 | return chained; |
|
369 | return chained; | |
320 | } |
|
370 | } | |
@@ -341,9 +391,8 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) |
|
|||
347 |
|
|
396 | return; | |
348 |
|
397 | |||
349 |
|
|
398 | var promise = chained(result); | |
@@ -354,14 +403,20 namespace Implab { | |||||
354 |
|
|
403 | x => medium.Resolve(x), | |
355 |
|
|
404 | e => medium.Reject(e) | |
356 |
|
|
405 | ); | |
357 |
|
|
406 | }; | |
358 | errorHandler = delegate(Exception e) { |
|
407 | ||
|
408 | ErrorHandler errorHandler = delegate(Exception e) { | |||
359 |
|
|
409 | if (error != null) | |
360 |
|
|
410 | error(e); | |
361 |
|
|
411 | // Π² ΡΠ»ΡΡΠ°Π΅ ΠΎΡΠΈΠ±ΠΊΠΈ Π½ΡΠΆΠ½ΠΎ ΠΏΠ΅ΡΠ΅Π΄Π°ΡΡ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π΄Π°Π»ΡΡΠ΅ ΠΏΠΎ ΡΠ΅ΠΏΠΎΡΠΊΠ΅ | |
362 |
|
|
412 | medium.Reject(e); | |
363 |
|
|
413 | }; | |
364 | }); |
|
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 |
|
433 | public Promise<T> Finally(Action handler) { | |
386 |
|
|
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 ( |
|
473 | switch (m_state) { | |
419 |
case |
|
474 | case ResolvedState: | |
420 | return m_result; |
|
475 | return m_result; | |
421 |
case |
|
476 | case CancelledState: | |
422 | throw new OperationCanceledException(); |
|
477 | throw new OperationCanceledException(); | |
423 |
case |
|
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}", |
|
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(ResultHandler |
|
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++; |
|
|||
439 | if (m_state == PromiseState.Unresolved) { |
|
|||
440 | m_resultHandlers.AddLast(handler); |
|
|||
441 | } else |
|
|||
442 | invokeRequired = true; |
|
|||
443 | } |
|
|||
444 |
|
499 | |||
445 | // ΠΎΠ±ΡΠ°Π±ΠΎΡΡΠΈΠΊΠΈ Π½Π΅ Π΄ΠΎΠ»ΠΆΠ½Ρ Π±Π»ΠΎΠΊΠΈΡΠΎΠ²Π°ΡΡ ΡΠ°ΠΌ ΠΎΠ±ΡΠ΅ΠΊΡ |
|
500 | if (!IsResolved) { | |
446 | if (invokeRequired) |
|
501 | m_handlers.Enqueue(handler); | |
|
502 | queued = true; | |||
|
503 | } else { | |||
|
504 | // the promise is in resolved state, just invoke the handled with minimum overhead | |||
|
505 | queued = false; | |||
447 | InvokeHandler(handler); |
|
506 | InvokeHandler(handler); | |
448 | } |
|
507 | } | |
449 |
|
508 | |||
450 | void InvokeHandler(ResultHandlerInfo handler) { |
|
509 | if (queued && IsResolved && m_handlers.TryDequeue(out handler)) | |
|
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 | |||
|
514 | InvokeHandler(handler); | |||
|
515 | ||||
|
516 | } | |||
|
517 | ||||
|
518 | void InvokeHandler(HandlerDescriptor handler) { | |||
451 | switch (m_state) { |
|
519 | switch (m_state) { | |
452 |
case |
|
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 |
|
523 | case RejectedState: | |
464 |
|
|
524 | handler.Reject(m_error); | |
465 | if (handler.errorHandler != null) |
|
525 | break; | |
466 | handler.errorHandler(m_error); |
|
526 | case CancelledState: | |
467 |
|
|
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) { |
|
|||
513 |
|
|
545 | return m_childrenCount <= 1; | |
514 |
|
|
546 | } | |
515 |
|
|
547 | } | |
516 | } |
|
|||
517 |
|
||||
518 | public PromiseState State { |
|
|||
519 | get { |
|
|||
520 | lock (m_lock) { |
|
|||
521 | return m_state; |
|
|||
522 | } |
|
|||
523 | } |
|
|||
524 | } |
|
|||
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 | } |
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