mace::cmt::future< T > Class Template Reference

placeholder for the result of an asynchronous operation. More...

#include <future.hpp>

List of all members.

Public Types
typedef promise< T >::ptr	promise_ptr
typedef T	value_type
Public Member Functions
	future (const promise_ptr &p=promise_ptr())
	future (const T &v)
void	cancel ()
bool	valid () const
bool	ready () const
bool	error () const
	operator const T & () const
const T &	wait (const microseconds &timeout=microseconds::max()) const
const T &	wait_until (const system_clock::time_point &timeout) const

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Detailed Description

template<typename T = void_t>
class mace::cmt::future< T >

A future is constructed with a promise that is created when a new asynchronous task is started. A future behaves like a shared pointer where all copies reffer to the same promise.

When future::wait() is called, the future will block the current task until one of three conditions are met:

• timeout
• a value is set
• an exception is set

If the asynchronous operation threw an exception it will be rethrown from the call to wait().

Automatic waiting on cast.

mace::cmt::future<T> automatically casts to type T when requested. This cast is short hand for mace::cmt::future<T>::wait().

Definition at line 174 of file future.hpp.

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The documentation for this class was generated from the following file:

• libs/cmt/include/mace/cmt/future.hpp