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https://github.com/mollyim/webrtc.git
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aefed55c25
First batch of applying iwyu to the repo. Done with: > ./tools_webrtc/iwyu/apply-iwyu api > git add api/[a-s]* > python3 gn_autodeps.py ~/local/webrtc/src out/Default Last step is a custom script I wrote to automatically apply new required dependencies for target in gn, which saved tons of time manually going over the files and fixing. If this is something that interest others, I can submit it as well. Bug: webrtc:42226242 Change-Id: Id109e77f50835827495bc4512880c4ec9ae175f6 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/343680 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Dor Hen <dorhen@meta.com> Cr-Commit-Position: refs/heads/main@{#42512}
128 lines
4.1 KiB
C++
128 lines
4.1 KiB
C++
/*
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* Copyright 2023 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "api/environment/environment_factory.h"
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#include <memory>
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#include <utility>
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#include "absl/base/nullability.h"
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#include "api/environment/environment.h"
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#include "api/field_trials_view.h"
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#include "api/make_ref_counted.h"
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#include "api/ref_counted_base.h"
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#include "api/rtc_event_log/rtc_event_log.h"
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#include "api/scoped_refptr.h"
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#include "api/task_queue/default_task_queue_factory.h"
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#include "api/task_queue/task_queue_factory.h"
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#include "api/transport/field_trial_based_config.h"
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#include "rtc_base/checks.h"
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#include "system_wrappers/include/clock.h"
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namespace webrtc {
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namespace {
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template <typename T>
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void Store(absl::Nonnull<std::unique_ptr<T>> value,
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scoped_refptr<const rtc::RefCountedBase>& leaf) {
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class StorageNode : public rtc::RefCountedBase {
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public:
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StorageNode(scoped_refptr<const rtc::RefCountedBase> parent,
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absl::Nonnull<std::unique_ptr<T>> value)
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: parent_(std::move(parent)), value_(std::move(value)) {}
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StorageNode(const StorageNode&) = delete;
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StorageNode& operator=(const StorageNode&) = delete;
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~StorageNode() override = default;
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private:
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scoped_refptr<const rtc::RefCountedBase> parent_;
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absl::Nonnull<std::unique_ptr<T>> value_;
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};
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// Utilities provided with ownership form a tree:
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// Root is nullptr, each node keeps an ownership of one utility.
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// Each child node has a link to the parent, but parent is unaware of its
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// children. Each `EnvironmentFactory` and `Environment` keep a reference to a
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// 'leaf_' - node with the last provided utility. This way `Environment` keeps
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// ownership of a single branch of the storage tree with each used utiltity
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// owned by one of the nodes on that branch.
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leaf = rtc::make_ref_counted<StorageNode>(std::move(leaf), std::move(value));
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}
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} // namespace
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EnvironmentFactory::EnvironmentFactory(const Environment& env)
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: leaf_(env.storage_),
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field_trials_(env.field_trials_),
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clock_(env.clock_),
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task_queue_factory_(env.task_queue_factory_),
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event_log_(env.event_log_) {}
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void EnvironmentFactory::Set(
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absl::Nullable<std::unique_ptr<const FieldTrialsView>> utility) {
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if (utility != nullptr) {
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field_trials_ = utility.get();
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Store(std::move(utility), leaf_);
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}
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}
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void EnvironmentFactory::Set(absl::Nullable<std::unique_ptr<Clock>> utility) {
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if (utility != nullptr) {
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clock_ = utility.get();
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Store(std::move(utility), leaf_);
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}
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}
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void EnvironmentFactory::Set(
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absl::Nullable<std::unique_ptr<TaskQueueFactory>> utility) {
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if (utility != nullptr) {
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task_queue_factory_ = utility.get();
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Store(std::move(utility), leaf_);
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}
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}
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void EnvironmentFactory::Set(
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absl::Nullable<std::unique_ptr<RtcEventLog>> utility) {
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if (utility != nullptr) {
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event_log_ = utility.get();
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Store(std::move(utility), leaf_);
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}
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}
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Environment EnvironmentFactory::CreateWithDefaults() && {
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if (field_trials_ == nullptr) {
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Set(std::make_unique<FieldTrialBasedConfig>());
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}
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if (clock_ == nullptr) {
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Set(Clock::GetRealTimeClock());
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}
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if (task_queue_factory_ == nullptr) {
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Set(CreateDefaultTaskQueueFactory(field_trials_));
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}
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if (event_log_ == nullptr) {
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Set(std::make_unique<RtcEventLogNull>());
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}
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RTC_DCHECK(field_trials_ != nullptr);
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RTC_DCHECK(clock_ != nullptr);
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RTC_DCHECK(task_queue_factory_ != nullptr);
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RTC_DCHECK(event_log_ != nullptr);
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return Environment(std::move(leaf_), //
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field_trials_, clock_, task_queue_factory_, event_log_);
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}
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Environment EnvironmentFactory::Create() const {
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// Create a temporary copy to avoid mutating `this` with default utilities.
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return EnvironmentFactory(*this).CreateWithDefaults();
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}
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} // namespace webrtc
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