gecko-dev/layout/style/PostTraversalTask.h

46 строки
1.1 KiB
C
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_PostTraversalTask_h
#define mozilla_PostTraversalTask_h
/* a task to be performed immediately after a Servo traversal */
namespace mozilla {
/**
* A PostTraversalTask is a task to be performed immediately after a Servo
* traversal. There are just a few tasks we need to perform, so we use this
* class rather than Runnables, to avoid virtual calls and some allocations.
*
* A PostTraversalTask is only safe to run immediately after the Servo
* traversal, since it can hold raw pointers to DOM objects.
*/
class PostTraversalTask
{
public:
void Run();
private:
enum class Type
{
Dummy,
};
explicit PostTraversalTask(Type aType)
: mType(aType)
, mTarget(nullptr)
{
}
Type mType;
void* mTarget;
};
} // namespace mozilla
#endif // mozilla_PostTraversalTask_h