| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "extensions/common/features/feature_session_type.h" |
| |
| #include "base/logging.h" |
| |
| namespace extensions { |
| |
| namespace { |
| |
| const FeatureSessionType kDefaultSessionType = FeatureSessionType::INITIAL; |
| FeatureSessionType g_current_session_type = kDefaultSessionType; |
| |
| } // namespace |
| |
| FeatureSessionType GetCurrentFeatureSessionType() { |
| return g_current_session_type; |
| } |
| |
| void SetCurrentFeatureSessionType(FeatureSessionType session_type) { |
| // Make sure that session type stays constant after it's been initialized. |
| // Note that this requirement can be bypassed in tests by using |
| // |ScopedCurrentFeatureSessionType|. |
| CHECK(g_current_session_type == kDefaultSessionType || |
| session_type == g_current_session_type); |
| // In certain unit tests, SetCurrentFeatureSessionType() can be called |
| // within the same process (where e.g. utility processes run as a separate |
| // thread). Don't write if the value is the same to avoid TSAN failures. |
| if (session_type != g_current_session_type) |
| g_current_session_type = session_type; |
| } |
| |
| std::unique_ptr<base::AutoReset<FeatureSessionType>> |
| ScopedCurrentFeatureSessionType(FeatureSessionType type) { |
| CHECK_EQ(g_current_session_type, kDefaultSessionType); |
| return std::make_unique<base::AutoReset<FeatureSessionType>>( |
| &g_current_session_type, type); |
| } |
| |
| } // namespace extensions |