The shm metadata msg will be right-padded to the given size. This
tunable may be used to saturate the kernel msg buffers more quickly with
the effect that the ZeroMQ message queue size - on which the FairMQ
shmem transport relies upon - behaves more accurately for very small
queue sizes.
This introduces a change for the meta msg format in the multipart case:
old: | MetaHeader 1 | ... | MetaHeader n |
new: | n | MetaHeader 1 | ... | MetaHeader n | padded to fMetadataMsgSize |
where `n` is a `size_t` and contains the number of following meta headers.
Previously, this number was infered from the msg buffer size itself which is
no longer possible due to the potential padding.
Implements #432
Delete special member functions where they are not used.
(as part of applying suggestions from cppcoreguidelines-special-member-functions)
These classes don't need to be copyable/movable:
# copy/move not used:
zmq:: TransportFactory, Socket, Message, UnmanagedRegion, Poller, Context
shm:: TransportFactory, Socket, Message, UnmanagedRegion, Poller
ofi:: TransportFactory, Socket, Message, Context
shm:: ZMsg, Region, Monitor, TerminalConfig, Manager
plugins:: Config, Control, TerminalConfig
fairmq::StateQueue, StateMachine, ProgOptions, PluginServices, PluginManager, Plugin, Device, StateSubscription
TestData, BadDevice, TestDevice (test suite heplers)
# used via ptr interface:
fairmq::UnmanagedRegion, TransportFactory, Socket, Poller, Message
These classes need to be movable/copyable:
MyClass (test suite helper), fairmq::Channel, fairmq::Parts
If the call is interrupted by a signal, this will throw, which we clearly do not want. Simplifying the API to let the user decide what to do on error is probably the best option.
A transer is attempted even if the transport has been interrupted
(with a timeout). When the timeout is reached, transfer methods will
return TransferResult::interrupted (-3).
