@@ -0,0 +1,75 | |||
|
1 | using System; | |
|
2 | using System.Threading; | |
|
3 | using System.Diagnostics; | |
|
4 | ||
|
5 | namespace Implab.Parallels { | |
|
6 | /// <summary> | |
|
7 | /// Implements a lightweight mechanism to aquire a shared or an exclusive lock. | |
|
8 | /// </summary> | |
|
9 | public class SharedLock { | |
|
10 | readonly object m_lock = new object(); | |
|
11 | int m_locks; | |
|
12 | bool m_exclusive; | |
|
13 | ||
|
14 | public bool LockExclusive(int timeout) { | |
|
15 | lock (m_lock) { | |
|
16 | if (m_locks > 0 && !Monitor.Wait(m_lock, timeout)) | |
|
17 | return false; | |
|
18 | m_exclusive = true; | |
|
19 | m_locks = 1; | |
|
20 | } | |
|
21 | } | |
|
22 | ||
|
23 | public void LockExclusive() { | |
|
24 | LockExclusive(-1); | |
|
25 | } | |
|
26 | ||
|
27 | public bool LockShared(int timeout) { | |
|
28 | lock (m_lock) { | |
|
29 | if (!m_exclusive) { | |
|
30 | m_locks++; | |
|
31 | return true; | |
|
32 | } | |
|
33 | ||
|
34 | if (m_lock == 0) { | |
|
35 | m_exclusive = false; | |
|
36 | m_locks = 1; | |
|
37 | return true; | |
|
38 | } | |
|
39 | ||
|
40 | if (Monitor.Wait(m_lock, timeout)) { | |
|
41 | Debug.Assert(m_locks == 0); | |
|
42 | m_locks = 1; | |
|
43 | m_exclusive = false; | |
|
44 | return true; | |
|
45 | } | |
|
46 | return false; | |
|
47 | } | |
|
48 | } | |
|
49 | ||
|
50 | public void LockShared() { | |
|
51 | LockShared(-1); | |
|
52 | } | |
|
53 | ||
|
54 | public void ReleaseShared() { | |
|
55 | lock (m_lock) { | |
|
56 | if (m_exclusive || m_locks <= 0) | |
|
57 | throw new InvalidOperationException(); | |
|
58 | m_locks--; | |
|
59 | if (m_locks == 0) | |
|
60 | Monitor.PulseAll(m_lock); | |
|
61 | } | |
|
62 | } | |
|
63 | ||
|
64 | public void ReleaseExclusive() { | |
|
65 | lock (m_lock) { | |
|
66 | if (!m_exclusive && m_locks != 1) | |
|
67 | throw new InvalidOperationException(); | |
|
68 | m_locks = 0; | |
|
69 | Monitor.PulseAll(m_lock); | |
|
70 | } | |
|
71 | } | |
|
72 | ||
|
73 | } | |
|
74 | } | |
|
75 |
@@ -143,8 +143,6 | |||
|
143 | 143 | <Compile Include="Diagnostics\Extensions.cs" /> |
|
144 | 144 | <Compile Include="IComponentContainer.cs" /> |
|
145 | 145 | <Compile Include="PromiseEventType.cs" /> |
|
146 | <Compile Include="Parallels\MTCustomQueue.cs" /> | |
|
147 | <Compile Include="Parallels\MTCustomQueueNode.cs" /> | |
|
148 | 146 | <Compile Include="ComponentContainer.cs" /> |
|
149 | 147 | <Compile Include="DisposablePool.cs" /> |
|
150 | 148 | <Compile Include="ObjectPool.cs" /> |
@@ -156,6 +154,7 | |||
|
156 | 154 | <Compile Include="Promise.cs" /> |
|
157 | 155 | <Compile Include="PromiseTransientException.cs" /> |
|
158 | 156 | <Compile Include="Parallels\Signal.cs" /> |
|
157 | <Compile Include="Parallels\SharedLock.cs" /> | |
|
159 | 158 | </ItemGroup> |
|
160 | 159 | <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" /> |
|
161 | 160 | <ItemGroup /> |
@@ -495,11 +495,11 namespace Implab.Parallels { | |||
|
495 | 495 | #region ICollection implementation |
|
496 | 496 | |
|
497 | 497 | public void Add(T item) { |
|
498 |
throw new |
|
|
498 | throw new NotSupportedException(); | |
|
499 | 499 | } |
|
500 | 500 | |
|
501 | 501 | public void Clear() { |
|
502 |
throw new |
|
|
502 | throw new NotSupportedException(); | |
|
503 | 503 | } |
|
504 | 504 | |
|
505 | 505 | public bool Contains(T item) { |
@@ -511,7 +511,7 namespace Implab.Parallels { | |||
|
511 | 511 | } |
|
512 | 512 | |
|
513 | 513 | public bool Remove(T item) { |
|
514 |
throw new Not |
|
|
514 | throw new NotSupportedException(); | |
|
515 | 515 | } |
|
516 | 516 | |
|
517 | 517 | public int Count { |
@@ -3,7 +3,7 using System.Threading; | |||
|
3 | 3 | |
|
4 | 4 | namespace Implab.Parallels { |
|
5 | 5 | /// <summary> |
|
6 | /// Implements simple signalling logic using <see cref="Monitor.PulseAll(object)"/>. | |
|
6 | /// Implements a simple signalling logic using <see cref="Monitor.PulseAll(object)"/>. | |
|
7 | 7 | /// </summary> |
|
8 | 8 | public class Signal { |
|
9 | 9 | readonly object m_lock = new object(); |
@@ -7,7 +7,7 namespace Implab.Parallels { | |||
|
7 | 7 | public class WorkerPool : DispatchPool<Action> { |
|
8 | 8 | |
|
9 | 9 | AsyncQueue<Action> m_queue = new AsyncQueue<Action>(); |
|
10 |
int m_queueLength |
|
|
10 | int m_queueLength; | |
|
11 | 11 | readonly int m_threshold = 1; |
|
12 | 12 | |
|
13 | 13 | public WorkerPool(int minThreads, int maxThreads, int threshold) |
@@ -40,7 +40,7 namespace Implab.Parallels { | |||
|
40 | 40 | |
|
41 | 41 | var lop = TraceContext.Instance.CurrentOperation; |
|
42 | 42 | |
|
43 |
EnqueueTask(delegate |
|
|
43 | EnqueueTask(delegate { | |
|
44 | 44 | TraceContext.Instance.EnterLogicalOperation(lop, false); |
|
45 | 45 | try { |
|
46 | 46 | promise.Resolve(task()); |
|
1 | NO CONTENT: file was removed |
|
1 | NO CONTENT: file was removed |
General Comments 0
You need to be logged in to leave comments.
Login now