chromium/cc/raster/categorized_worker_pool.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_RASTER_CATEGORIZED_WORKER_POOL_H_
#define CC_RASTER_CATEGORIZED_WORKER_POOL_H_

#include <memory>
#include <optional>
#include <vector>

#include "base/containers/span.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/synchronization/condition_variable.h"
#include "base/task/post_job.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_runner.h"
#include "base/thread_annotations.h"
#include "base/threading/platform_thread.h"
#include "base/threading/simple_thread.h"
#include "cc/cc_export.h"
#include "cc/raster/task_category.h"
#include "cc/raster/task_graph_runner.h"
#include "cc/raster/task_graph_work_queue.h"

namespace cc {

// A pool of threads used to run categorized work. The work can be scheduled on
// the threads using different interfaces.
// 1. The pool itself implements TaskRunner interface and tasks posted via that
//    interface might run in parallel.
// 2. The pool also implements TaskGraphRunner interface which allows to
//    schedule a graph of tasks with their dependencies.
// 3. CreateSequencedTaskRunner() creates a sequenced task runner that might run
//    in parallel with other instances of sequenced task runners.
class CC_EXPORT CategorizedWorkerPool : public base::TaskRunner,
                                        public TaskGraphRunner { … };

class CC_EXPORT CategorizedWorkerPoolImpl : public CategorizedWorkerPool { … };

class CC_EXPORT CategorizedWorkerPoolJob : public CategorizedWorkerPool { … };

}  // namespace cc

#endif  // CC_RASTER_CATEGORIZED_WORKER_POOL_H_