Commit Graph

4 Commits

Author SHA1 Message Date
Christopher Kohlhoff
2f7af2e33c Update composed operations examples to use async_initiate and a new helper function async_compose. 2019-03-06 20:22:23 +11:00
Christopher Kohlhoff
ae04c26689 Update copyright notices. 2019-02-17 19:59:39 -10:00
Christopher Kohlhoff
59066d80b2 Add custom I/O executor support to I/O objects.
All I/O objects now have an additional Executor template parameter. This
template parameter defaults to the asio::executor type (the polymorphic
executor wrapper) but can be used to specify a user-defined executor
type.

I/O objects' constructors and functions that previously took an
asio::io_context& now accept either an Executor or a reference to a
concrete ExecutionContext (such as asio::io_context or
asio::thread_pool).

One potential point of breakage in existing user code is when reusing an
I/O object's io_context for constructing another I/O object, as in:

    asio::steady_timer my_timer(my_socket.get_executor().context());

To fix this, either construct the second I/O object using the first I/O
object's executor:

    asio::steady_timer my_timer(my_socket.get_executor());

or otherwise explicitly pass the io_context:

    asio::steady_timer my_timer(my_io_context);
2019-02-17 19:59:29 -10:00
Christopher Kohlhoff
e19f5bdc94 Add examples showing how to write composed operations. 2018-12-05 14:10:58 +11:00