annotate Implab/Parallels/ArrayTraits.cs @ 107:f5220e5472ef v2

minor fixes and optimizations
author cin
date Tue, 11 Nov 2014 04:14:21 +0300
parents 5f10d54b45df
children 2573b562e328
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
41
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
1 using Implab.Diagnostics;
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
2 using System;
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
3 using System.Diagnostics;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
4 using System.Threading;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
5
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
6 namespace Implab.Parallels {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
7 public static class ArrayTraits {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
8 class ArrayIterator<TSrc> : DispatchPool<int> {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
9 readonly Action<TSrc> m_action;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
10 readonly TSrc[] m_source;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
11 readonly Promise<int> m_promise = new Promise<int>();
92
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
12 readonly LogicalOperation m_logicalOperation;
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
13
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
14 int m_pending;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
15 int m_next;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
16
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
17 public ArrayIterator(TSrc[] source, Action<TSrc> action, int threads)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
18 : base(threads) {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
19
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
20 Debug.Assert(source != null);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
21 Debug.Assert(action != null);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
22
92
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
23 m_logicalOperation = TraceContext.Instance.CurrentOperation;
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
24 m_next = 0;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
25 m_source = source;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
26 m_pending = source.Length;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
27 m_action = action;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
28
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
29 m_promise.Anyway(Dispose);
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
30
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
31 InitPool();
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
32 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
33
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
34 public Promise<int> Promise {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
35 get {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
36 return m_promise;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
37 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
38 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
39
41
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
40 protected override void Worker() {
92
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
41 TraceContext.Instance.EnterLogicalOperation(m_logicalOperation, false);
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
42 try {
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
43 base.Worker();
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
44 } finally {
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
45 TraceContext.Instance.Leave();
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
46 }
41
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
47 }
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
48
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
49 protected override bool TryDequeue(out int unit) {
16
cin
parents: 15
diff changeset
50 unit = Interlocked.Increment(ref m_next) - 1;
75
4439140706d0 major refactoring, added tasks support
cin
parents: 72
diff changeset
51 return unit < m_source.Length;
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
52 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
53
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
54 protected override void InvokeUnit(int unit) {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
55 try {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
56 m_action(m_source[unit]);
16
cin
parents: 15
diff changeset
57 var pending = Interlocked.Decrement(ref m_pending);
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
58 if (pending == 0)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
59 m_promise.Resolve(m_source.Length);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
60 } catch (Exception e) {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
61 m_promise.Reject(e);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
62 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
63 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
64 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
65
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
66 class ArrayMapper<TSrc, TDst>: DispatchPool<int> {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
67 readonly Func<TSrc, TDst> m_transform;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
68 readonly TSrc[] m_source;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
69 readonly TDst[] m_dest;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
70 readonly Promise<TDst[]> m_promise = new Promise<TDst[]>();
92
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
71 readonly LogicalOperation m_logicalOperation;
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
72
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
73 int m_pending;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
74 int m_next;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
75
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
76 public ArrayMapper(TSrc[] source, Func<TSrc, TDst> transform, int threads)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
77 : base(threads) {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
78
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
79 Debug.Assert (source != null);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
80 Debug.Assert( transform != null);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
81
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
82 m_next = 0;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
83 m_source = source;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
84 m_dest = new TDst[source.Length];
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
85 m_pending = source.Length;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
86 m_transform = transform;
92
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
87 m_logicalOperation = TraceContext.Instance.CurrentOperation;
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
88
76
c761fc982e1d Refactoring of the IPromise<T> interface
cin
parents: 75
diff changeset
89 m_promise.Anyway(Dispose);
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
90
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
91 InitPool();
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
92 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
93
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
94 public Promise<TDst[]> Promise {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
95 get {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
96 return m_promise;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
97 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
98 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
99
41
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
100 protected override void Worker() {
92
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
101 TraceContext.Instance.EnterLogicalOperation(m_logicalOperation,false);
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
102 try {
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
103 base.Worker();
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
104 } finally {
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
105 TraceContext.Instance.Leave();
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
106 }
41
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
107 }
2fc0fbe7d58b Added TraceContext support to array traits
cin
parents: 32
diff changeset
108
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
109 protected override bool TryDequeue(out int unit) {
16
cin
parents: 15
diff changeset
110 unit = Interlocked.Increment(ref m_next) - 1;
92
4c0e5ef99986 rewritten tracing
cin
parents: 89
diff changeset
111 return unit < m_source.Length;
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
112 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
113
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
114 protected override void InvokeUnit(int unit) {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
115 try {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
116 m_dest[unit] = m_transform(m_source[unit]);
16
cin
parents: 15
diff changeset
117 var pending = Interlocked.Decrement(ref m_pending);
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
118 if (pending == 0)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
119 m_promise.Resolve(m_dest);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
120 } catch (Exception e) {
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
121 m_promise.Reject(e);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
122 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
123 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
124 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
125
30
2fad2d1f4b03 small refactoring, cleanup.
cin
parents: 26
diff changeset
126 public static IPromise<TDst[]> ParallelMap<TSrc, TDst> (this TSrc[] source, Func<TSrc,TDst> transform, int threads) {
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
127 if (source == null)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
128 throw new ArgumentNullException("source");
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
129 if (transform == null)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
130 throw new ArgumentNullException("transform");
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
131
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
132 var mapper = new ArrayMapper<TSrc, TDst>(source, transform, threads);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
133 return mapper.Promise;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
134 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
135
30
2fad2d1f4b03 small refactoring, cleanup.
cin
parents: 26
diff changeset
136 public static IPromise<int> ParallelForEach<TSrc>(this TSrc[] source, Action<TSrc> action, int threads) {
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
137 if (source == null)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
138 throw new ArgumentNullException("source");
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
139 if (action == null)
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
140 throw new ArgumentNullException("action");
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
141
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
142 var iter = new ArrayIterator<TSrc>(source, action, threads);
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
143 return iter.Promise;
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
144 }
16
cin
parents: 15
diff changeset
145
101
279e226dffdd code cleanup
cin
parents: 92
diff changeset
146 public static IPromise<TDst[]> ChainedMap<TSrc, TDst>(this TSrc[] source, Func<TSrc, IPromise<TDst>> transform, int threads) {
16
cin
parents: 15
diff changeset
147 if (source == null)
cin
parents: 15
diff changeset
148 throw new ArgumentNullException("source");
cin
parents: 15
diff changeset
149 if (transform == null)
cin
parents: 15
diff changeset
150 throw new ArgumentNullException("transform");
cin
parents: 15
diff changeset
151 if (threads <= 0)
101
279e226dffdd code cleanup
cin
parents: 92
diff changeset
152 throw new ArgumentOutOfRangeException("threads","Threads number must be greater then zero");
16
cin
parents: 15
diff changeset
153
32
8eca2652d2ff fixed: StackOverflow in IPromiseBase.Then(handler)
cin
parents: 30
diff changeset
154 if (source.Length == 0)
8eca2652d2ff fixed: StackOverflow in IPromiseBase.Then(handler)
cin
parents: 30
diff changeset
155 return Promise<TDst[]>.ResultToPromise(new TDst[0]);
8eca2652d2ff fixed: StackOverflow in IPromiseBase.Then(handler)
cin
parents: 30
diff changeset
156
16
cin
parents: 15
diff changeset
157 var promise = new Promise<TDst[]>();
cin
parents: 15
diff changeset
158 var res = new TDst[source.Length];
cin
parents: 15
diff changeset
159 var pending = source.Length;
30
2fad2d1f4b03 small refactoring, cleanup.
cin
parents: 26
diff changeset
160
80
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
161 object locker = new object();
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
162 int slots = threads;
16
cin
parents: 15
diff changeset
163
75
4439140706d0 major refactoring, added tasks support
cin
parents: 72
diff changeset
164 // Analysis disable AccessToDisposedClosure
16
cin
parents: 15
diff changeset
165 AsyncPool.InvokeNewThread(() => {
cin
parents: 15
diff changeset
166 for (int i = 0; i < source.Length; i++) {
19
e3935fdf59a2 Promise is rewritten to use interlocked operations instead of locks
cin
parents: 16
diff changeset
167 if(promise.IsResolved)
16
cin
parents: 15
diff changeset
168 break; // stop processing in case of error or cancellation
cin
parents: 15
diff changeset
169 var idx = i;
75
4439140706d0 major refactoring, added tasks support
cin
parents: 72
diff changeset
170
89
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
171 if (Interlocked.Decrement(ref slots) < 0) {
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
172 lock(locker) {
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
173 while(slots < 0)
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
174 Monitor.Wait(locker);
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
175 }
80
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
176 }
89
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
177
16
cin
parents: 15
diff changeset
178 try {
80
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
179 transform(source[i])
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
180 .Anyway(() => {
89
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
181 Interlocked.Increment(ref slots);
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
182 lock (locker) {
80
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
183 Monitor.Pulse(locker);
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
184 }
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
185 })
104
5f10d54b45df renamed Promise.Last -> Promise.On
cin
parents: 101
diff changeset
186 .On(
80
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
187 x => {
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
188 res[idx] = x;
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
189 var left = Interlocked.Decrement(ref pending);
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
190 if (left == 0)
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
191 promise.Resolve(res);
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
192 },
89
ce0171cacec4 improved performance of a chained map operation
cin
parents: 80
diff changeset
193 promise.Reject
80
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
194 );
16
cin
parents: 15
diff changeset
195
cin
parents: 15
diff changeset
196 } catch (Exception e) {
cin
parents: 15
diff changeset
197 promise.Reject(e);
cin
parents: 15
diff changeset
198 }
cin
parents: 15
diff changeset
199 }
cin
parents: 15
diff changeset
200 return 0;
cin
parents: 15
diff changeset
201 });
cin
parents: 15
diff changeset
202
80
4f20870d0816 added memory barriers
cin
parents: 76
diff changeset
203 return promise;
16
cin
parents: 15
diff changeset
204 }
24
ee04e1fa78da fixed dispatch pool race condition
cin
parents: 19
diff changeset
205
15
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
206 }
0f982f9b7d4d implemented parallel map and foreach for arrays
cin
parents:
diff changeset
207 }