2 // TaskBatchingImpl.cs: Class that implements Task Batching Algorithm from the wiki.
5 // Marek Sieradzki (marek.sieradzki@gmail.com)
6 // Ankit Jain (jankit@novell.com)
8 // (C) 2005 Marek Sieradzki
9 // Copyright 2008 Novell, Inc (http://www.novell.com)
10 // Copyright 2009 Novell, Inc (http://www.novell.com)
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System.Collections.Generic;
37 namespace Microsoft.Build.BuildEngine {
38 internal class TaskBatchingImpl : BatchingImplBase
40 public TaskBatchingImpl (Project project)
45 public bool Build (BuildTask buildTask, out bool executeOnErrors)
47 executeOnErrors = false;
51 // populate list of referenced items and metadata
52 ParseTaskAttributes (buildTask);
53 if (consumedMetadataReferences.Count == 0) {
54 // No batching required
55 if (ConditionParser.ParseAndEvaluate (buildTask.Condition, project))
56 return buildTask.Execute ();
57 else // skipped, it should be logged
61 BatchAndPrepareBuckets ();
62 return Run (buildTask, out executeOnErrors);
64 consumedItemsByName = null;
65 consumedMetadataReferences = null;
66 consumedQMetadataReferences = null;
67 consumedUQMetadataReferences = null;
68 batchedItemsByName = null;
69 commonItemsByName = null;
73 bool Run (BuildTask buildTask, out bool executeOnErrors)
75 executeOnErrors = false;
77 // Run the task in batches
79 foreach (Dictionary<string, BuildItemGroup> bucket in buckets) {
80 project.SetBatchedItems (bucket, commonItemsByName);
81 if (ConditionParser.ParseAndEvaluate (buildTask.Condition, project)) {
82 if (! (retval = buildTask.Execute ()))
86 project.SetBatchedItems (null, null);
92 // Parse task attributes to get list of referenced metadata and items
93 // to determine batching
95 void ParseTaskAttributes (BuildTask buildTask)
97 foreach (XmlAttribute attrib in buildTask.TaskElement.Attributes)
98 ParseAttribute (attrib.Value);