Change the internal worker routing id to be "w" followed by the raw
integer bytes, so that we can just memcpy them into a uint32_t rather
than needing to do str -> integer conversion on each received worker
message.
(This also eliminates a vestigal call into oxenc internals).
I don't know what this set was originally meant to be doing, but it
currently does nothing (except adding overhead).
The comment says it "owns" the instances but that isn't really true; the
instances effectively already manage themselves as they pass the pointer
through the communications between proxy and workers.
This adds a much simpler `Job` implementation of `Batch` that is used
for simple no-return, no-completion jobs (as are initiated via
`omq.job(...)`).
This reduces the overhead involved in constructing/destroying the Batch
instance for these common jobs.
bt_*, hex, base32z, base64 all moved to oxen-encoding a while ago; this
finishes the move by removing them from oxenmq and instead making oxenmq
depend on oxen-encoding.
I realized after merging the previous PR that it is difficult to
correctly pass ownership into a timer, because something like:
TimerID x = omq.add_timer([&] { omq.cancel_timer(x); }, 5ms);
doesn't work when the timer job needs to outlive the caller. My next
approach was:
auto x = std::make_shared<TimerID>();
*x = omq.add_timer([&omq, x] { omq.cancel_timer(*x); }, 5ms);
but this has two problems: first, TimerID wasn't default constructible,
and second, there is no guarantee that the assignment to *x happens
before (and is visible to) the access for the cancellation.
This commit fixes both issues: TimerID is now default constructible, and
an overload is added that takes the lvalue reference to the TimerID to
set rather than returning it (and guarantees that it will be set before
the timer is created).
Updates `add_timer` to return a new opaque TimerID object that can later
be passed to `cancel_timer` to cancel an existing timer.
Also adds timer tests, which was omitted (except for one in the tagged
threads section), along with a new test for timer deletion.
Jason Rhinelander