Request the io_service
to invoke the given
function object.
template< typename Function, typename Allocator> void defer( Function && f, const Allocator & a);
This function is used to ask the io_service
to execute the given
function object. The function object will never be executed inside defer()
.
Instead, it will be scheduled to run on the io_service
.
If the current thread belongs to the io_service
, defer()
will delay scheduling the function object
until the current thread returns control to the pool.
The function object to be called. The executor will make a copy of the handler object as required. The function signature of the function object must be:
void function();
An allocator that may be used by the executor to allocate the internal storage needed for function invocation.