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// Copyright 2015 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 "cc/raster/synchronous_task_graph_runner.h"
#include "base/threading/simple_thread.h"
#include "base/threading/thread_restrictions.h"
#include "base/trace_event/trace_event.h"
namespace cc {
SynchronousTaskGraphRunner::SynchronousTaskGraphRunner() {}
SynchronousTaskGraphRunner::~SynchronousTaskGraphRunner() {
DCHECK(!work_queue_.HasReadyToRunTasks());
}
NamespaceToken SynchronousTaskGraphRunner::GetNamespaceToken() {
return work_queue_.GetNamespaceToken();
}
void SynchronousTaskGraphRunner::ScheduleTasks(NamespaceToken token,
TaskGraph* graph) {
TRACE_EVENT2("cc", "SynchronousTaskGraphRunner::ScheduleTasks", "num_nodes",
graph->nodes.size(), "num_edges", graph->edges.size());
DCHECK(token.IsValid());
DCHECK(!TaskGraphWorkQueue::DependencyMismatch(graph));
work_queue_.ScheduleTasks(token, graph);
}
void SynchronousTaskGraphRunner::WaitForTasksToFinishRunning(
NamespaceToken token) {
TRACE_EVENT0("cc", "SynchronousTaskGraphRunner::WaitForTasksToFinishRunning");
DCHECK(token.IsValid());
auto* task_namespace = work_queue_.GetNamespaceForToken(token);
if (!task_namespace)
return;
while (
!TaskGraphWorkQueue::HasFinishedRunningTasksInNamespace(task_namespace)) {
RunTask();
}
}
void SynchronousTaskGraphRunner::CollectCompletedTasks(
NamespaceToken token,
Task::Vector* completed_tasks) {
TRACE_EVENT0("cc", "SynchronousTaskGraphRunner::CollectCompletedTasks");
DCHECK(token.IsValid());
work_queue_.CollectCompletedTasks(token, completed_tasks);
}
void SynchronousTaskGraphRunner::RunUntilIdle() {
while (work_queue_.HasReadyToRunTasks())
RunTask();
}
void SynchronousTaskGraphRunner::RunTask() {
TRACE_EVENT0("toplevel", "SynchronousTaskGraphRunner::RunTask");
auto prioritized_task = work_queue_.GetNextTaskToRun();
Task* task = prioritized_task.task;
task->WillRun();
task->RunOnWorkerThread();
task->DidRun();
work_queue_.CompleteTask(prioritized_task);
}
} // namespace cc
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