To hold the future result of a user supplied function, use a future. When the redeem member is called, two possible actions occur. If the user function has finished and returned a value, the redeem function returns the value. If the user function is still executing, the redeem function will block until the return value can be obtained.

Declaration


  #include <ospace/thread/future.h>

class os_future

Interface

Constructor

os_future()

Constructs a future with empty result.

Constructor

os_future( os_future_thread* future_thread )

Constructs a future with empty result and associated with future_thread .

Constructor

os_future( const os_future& future )

Constructs a copy of future .

Destructor

~os_future()

Destroys the future.

redeem

void* redeem()

Returns the value contained in future but will block if user function has not finished.

redeemed

bool redeemed() const

Returns true if the value contained in future has already been fetched.

future

Library

Declaration

Interface