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1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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38 return it->second; | 38 return it->second; |
39 } | 39 } |
40 } // namespace field_trial | 40 } // namespace field_trial |
41 | 41 |
42 namespace test { | 42 namespace test { |
43 // Note: this code is copied from src/base/metrics/field_trial.cc since the aim | 43 // Note: this code is copied from src/base/metrics/field_trial.cc since the aim |
44 // is to mimic chromium --force-fieldtrials. | 44 // is to mimic chromium --force-fieldtrials. |
45 void InitFieldTrialsFromString(const std::string& trials_string) { | 45 void InitFieldTrialsFromString(const std::string& trials_string) { |
46 static const char kPersistentStringSeparator = '/'; | 46 static const char kPersistentStringSeparator = '/'; |
47 | 47 |
48 // Catch an error if this is called more than once. | |
49 assert(field_trials_initiated_ == false); | |
50 field_trials_initiated_ = true; | 48 field_trials_initiated_ = true; |
51 | 49 |
52 if (trials_string.empty()) return; | 50 if (trials_string.empty()) { |
| 51 field_trials_.clear(); |
| 52 return; |
| 53 } |
53 | 54 |
54 size_t next_item = 0; | 55 size_t next_item = 0; |
55 while (next_item < trials_string.length()) { | 56 while (next_item < trials_string.length()) { |
56 size_t name_end = trials_string.find(kPersistentStringSeparator, next_item); | 57 size_t name_end = trials_string.find(kPersistentStringSeparator, next_item); |
57 if (name_end == trials_string.npos || next_item == name_end) | 58 if (name_end == trials_string.npos || next_item == name_end) |
58 break; | 59 break; |
59 size_t group_name_end = trials_string.find(kPersistentStringSeparator, | 60 size_t group_name_end = trials_string.find(kPersistentStringSeparator, |
60 name_end + 1); | 61 name_end + 1); |
61 if (group_name_end == trials_string.npos || name_end + 1 == group_name_end) | 62 if (group_name_end == trials_string.npos || name_end + 1 == group_name_end) |
62 break; | 63 break; |
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77 return; | 78 return; |
78 } | 79 } |
79 // LOG does not prints when this is called early on main. | 80 // LOG does not prints when this is called early on main. |
80 fprintf(stderr, "Invalid field trials string.\n"); | 81 fprintf(stderr, "Invalid field trials string.\n"); |
81 | 82 |
82 // Using abort so it crashs both in debug and release mode. | 83 // Using abort so it crashs both in debug and release mode. |
83 abort(); | 84 abort(); |
84 } | 85 } |
85 } // namespace test | 86 } // namespace test |
86 } // namespace webrtc | 87 } // namespace webrtc |
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