posix::basic_stream_descriptor::bytes

posix::basic_stream_descriptor::bytes_readable

Inherited from posix::descriptor_base.

IO control command to get the amount of data that can be read without blocking.

typedef implementation_defined bytes_readable;

Types

Name	Description
container	Determine the container for the specified elements.
rebind	Rebind the traits to a new set of signatures.
receive_cancelled_signature	The signature of a channel cancellation notification.
receive_closed_signature	The signature of a channel closed notification.

Member Functions

Name	Description
invoke_receive_cancelled [static]	Invoke the specified handler with a cancellation notification.
invoke_receive_closed [static]	Invoke the specified handler with a closed notification.

Implements the FIONREAD IO control command.

Example

boost::asio::posix::stream_descriptor descriptor(my_context);
...
boost::asio::descriptor_base::bytes_readable command(true);
descriptor.io_control(command);
std::size_t bytes_readable = command.get();

Requirements

Header: boost/asio/posix/basic_stream_descriptor.hpp

Convenience header: boost/asio.hpp