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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /ipc/glue/TaskFactory.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ipc/glue/TaskFactory.h')
-rw-r--r-- | ipc/glue/TaskFactory.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/ipc/glue/TaskFactory.h b/ipc/glue/TaskFactory.h new file mode 100644 index 0000000000..af63244cf0 --- /dev/null +++ b/ipc/glue/TaskFactory.h @@ -0,0 +1,97 @@ +/* -*- 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_plugins_TaskFactory_h +#define mozilla_plugins_TaskFactory_h + +#include <base/task.h> + +#include <utility> + +/* + * This is based on the ScopedRunnableMethodFactory from + * ipc/chromium/src/base/task.h Chromium's factories assert if tasks are created + * and run on different threads, which is something we need to do in + * PluginModuleParent (hang UI vs. main thread). TaskFactory just provides + * cancellable tasks that don't assert this. This version also allows both + * ScopedMethod and regular Tasks to be generated by the same Factory object. + */ + +namespace mozilla { +namespace ipc { + +template <class T> +class TaskFactory : public RevocableStore { + private: + template <class TaskType> + class TaskWrapper : public TaskType { + public: + template <typename... Args> + explicit TaskWrapper(RevocableStore* store, Args&&... args) + : TaskType(std::forward<Args>(args)...), revocable_(store) {} + + NS_IMETHOD Run() override { + if (!revocable_.revoked()) TaskType::Run(); + return NS_OK; + } + + private: + Revocable revocable_; + }; + + public: + explicit TaskFactory(T* object) : object_(object) {} + + template <typename TaskParamType, typename... Args> + inline already_AddRefed<TaskParamType> NewTask(Args&&... args) { + typedef TaskWrapper<TaskParamType> TaskWrapper; + RefPtr<TaskWrapper> task = + new TaskWrapper(this, std::forward<Args>(args)...); + return task.forget(); + } + + template <class Method, typename... Args> + inline already_AddRefed<Runnable> NewRunnableMethod(Method method, + Args&&... args) { + typedef decltype(base::MakeTuple(std::forward<Args>(args)...)) ArgTuple; + typedef RunnableMethod<Method, ArgTuple> RunnableMethod; + typedef TaskWrapper<RunnableMethod> TaskWrapper; + + RefPtr<TaskWrapper> task = new TaskWrapper( + this, object_, method, base::MakeTuple(std::forward<Args>(args)...)); + + return task.forget(); + } + + protected: + template <class Method, class Params> + class RunnableMethod : public Runnable { + public: + RunnableMethod(T* obj, Method meth, const Params& params) + : Runnable("ipc::TaskFactory::RunnableMethod"), + obj_(obj), + meth_(meth), + params_(params) {} + + NS_IMETHOD Run() override { + DispatchToMethod(obj_, meth_, params_); + return NS_OK; + } + + private: + T* obj_; + Method meth_; + Params params_; + }; + + private: + T* object_; +}; + +} // namespace ipc +} // namespace mozilla + +#endif // mozilla_plugins_TaskFactory_h |