exception.hpp

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#pragma once
 
/// @file userver/engine/exception.hpp
/// @brief Coroutine engine exceptions
 
#include <stdexcept>
 
#include <userver/engine/task/cancel.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace engine {
 
/// Thrown if a wait operation on the current task has been interrupted, usually
/// due to a timeout or cancellation
class WaitInterruptedException : public std::runtime_error {
 public:
  explicit WaitInterruptedException(TaskCancellationReason reason);
 
  TaskCancellationReason Reason() const noexcept;
 
 private:
  const TaskCancellationReason reason_;
};
 
/// Thrown if a `TaskWithResult`, for which we were waiting, got cancelled
class TaskCancelledException : public std::runtime_error {
 public:
  explicit TaskCancelledException(TaskCancellationReason reason);
 
  TaskCancellationReason Reason() const noexcept;
 
 private:
  const TaskCancellationReason reason_;
};
 
}  // namespace engine
 
USERVER_NAMESPACE_END