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Side by Side Diff: pkg/analyzer/lib/src/generated/utilities_general.dart

Issue 1394533002: Remove final users of dart:profiler library (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Created 5 years, 2 months ago
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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 library engine.utilities.general; 5 library engine.utilities.general;
6 6
7 import 'dart:profiler'; 7 import 'dart:developer' show UserTag;
8 8
9 /** 9 /**
10 * Jenkins hash function, optimized for small integers. 10 * Jenkins hash function, optimized for small integers.
11 * Borrowed from sdk/lib/math/jenkins_smi_hash.dart. 11 * Borrowed from sdk/lib/math/jenkins_smi_hash.dart.
12 */ 12 */
13 class JenkinsSmiHash { 13 class JenkinsSmiHash {
14 static int combine(int hash, int value) { 14 static int combine(int hash, int value) {
15 hash = 0x1fffffff & (hash + value); 15 hash = 0x1fffffff & (hash + value);
16 hash = 0x1fffffff & (hash + ((0x0007ffff & hash) << 10)); 16 hash = 0x1fffffff & (hash + ((0x0007ffff & hash) << 10));
17 return hash ^ (hash >> 6); 17 return hash ^ (hash >> 6);
18 } 18 }
19 19
20 static int finish(int hash) { 20 static int finish(int hash) {
21 hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3)); 21 hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));
22 hash = hash ^ (hash >> 11); 22 hash = hash ^ (hash >> 11);
23 return 0x1fffffff & (hash + ((0x00003fff & hash) << 15)); 23 return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
24 } 24 }
25 25
26 static int hash2(a, b) => finish(combine(combine(0, a), b)); 26 static int hash2(a, b) => finish(combine(combine(0, a), b));
27 27
28 static int hash3(a, b, c) => finish(combine(combine(combine(0, a), b), c)); 28 static int hash3(a, b, c) => finish(combine(combine(combine(0, a), b), c));
29 29
30 static int hash4(a, b, c, d) => 30 static int hash4(a, b, c, d) =>
31 finish(combine(combine(combine(combine(0, a), b), c), d)); 31 finish(combine(combine(combine(combine(0, a), b), c), d));
32 } 32 }
33 33
34 /** 34 /**
35 * Helper class for gathering performance statistics. This class is modeled on 35 * Helper class for gathering performance statistics. This class is modeled on
36 * the UserTag class in dart:profiler so that it can interoperate easily with 36 * the UserTag class in dart:developer so that it can interoperate easily with
37 * it. 37 * it.
38 */ 38 */
39 abstract class PerformanceTag { 39 abstract class PerformanceTag {
40 /** 40 /**
41 * Return a list of all [PerformanceTag]s which have been created. 41 * Return a list of all [PerformanceTag]s which have been created.
42 */ 42 */
43 static List<PerformanceTag> get all => _PerformanceTagImpl.all.toList(); 43 static List<PerformanceTag> get all => _PerformanceTagImpl.all.toList();
44 44
45 /** 45 /**
46 * Return the current [PerformanceTag] for the isolate. 46 * Return the current [PerformanceTag] for the isolate.
(...skipping 98 matching lines...) Expand 10 before | Expand all | Expand 10 after
145 145
146 makeCurrentWhile(f()) { 146 makeCurrentWhile(f()) {
147 PerformanceTag prevTag = makeCurrent(); 147 PerformanceTag prevTag = makeCurrent();
148 try { 148 try {
149 return f(); 149 return f();
150 } finally { 150 } finally {
151 prevTag.makeCurrent(); 151 prevTag.makeCurrent();
152 } 152 }
153 } 153 }
154 } 154 }
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