detached_tasks_sync_block.hpp

#pragma once
 
#include <cstdint>
#include <utility>
 
#include <userver/engine/task/cancel.hpp>
#include <userver/engine/task/task.hpp>
#include <userver/utils/fast_pimpl.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace engine::impl {
 
class TaskContext;
 
class DetachedTasksSyncBlock final {
 public:
  enum class StopMode { kCancelAndWait, kCancel };
 
  explicit DetachedTasksSyncBlock(StopMode stop_mode);
 
  DetachedTasksSyncBlock(const DetachedTasksSyncBlock&) = delete;
  DetachedTasksSyncBlock(DetachedTasksSyncBlock&&) = delete;
  ~DetachedTasksSyncBlock();
 
  void Add(TaskContext& context);
  void Add(Task&& task);
 
  void RequestCancellation(TaskCancellationReason reason) noexcept;
 
  std::int64_t ActiveTasksApprox() const noexcept;
 
  struct Token;
 
  static void Dispose(Token& token) noexcept;
 
 private:
  struct Impl;
  utils::FastPimpl<Impl, 48, 8> impl_;
};
 
}  // namespace engine::impl
 
USERVER_NAMESPACE_END