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// 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 "third_party/blink/renderer/core/workers/parent_execution_context_task_runners.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/platform/task_type.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
#include "third_party/blink/renderer/platform/wtf/threading_primitives.h"
namespace blink {
ParentExecutionContextTaskRunners* ParentExecutionContextTaskRunners::Create(
ExecutionContext* context) {
DCHECK(context);
DCHECK(context->IsContextThread());
return MakeGarbageCollected<ParentExecutionContextTaskRunners>(context);
}
ParentExecutionContextTaskRunners* ParentExecutionContextTaskRunners::Create() {
return MakeGarbageCollected<ParentExecutionContextTaskRunners>(nullptr);
}
ParentExecutionContextTaskRunners::ParentExecutionContextTaskRunners(
ExecutionContext* context)
: ExecutionContextLifecycleObserver(context) {
// For now we only support very limited task types. Sort in the TaskType enum
// value order.
for (auto type : {TaskType::kNetworking, TaskType::kPostedMessage,
TaskType::kWorkerAnimation, TaskType::kInternalDefault,
TaskType::kInternalLoading, TaskType::kInternalTest,
TaskType::kInternalMedia, TaskType::kInternalInspector}) {
auto task_runner = context ? context->GetTaskRunner(type)
: Thread::Current()->GetTaskRunner();
task_runners_.insert(type, std::move(task_runner));
}
}
scoped_refptr<base::SingleThreadTaskRunner>
ParentExecutionContextTaskRunners::Get(TaskType type) {
MutexLocker lock(mutex_);
return task_runners_.at(type);
}
void ParentExecutionContextTaskRunners::Trace(Visitor* visitor) {
ExecutionContextLifecycleObserver::Trace(visitor);
}
void ParentExecutionContextTaskRunners::ContextDestroyed() {
MutexLocker lock(mutex_);
for (auto& entry : task_runners_)
entry.value = Thread::Current()->GetTaskRunner();
}
} // namespace blink
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