| Commit message (Collapse) | Author | Age |
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I seem to be having a very difficult time getting dual-stack sockets
to function properly on Windows. I've sort of abandoned it for now.
I need to think about how to solve this -- it's not clear to me
right now whether dual stack sockets are the right answer or not.
People do expect these to work, but a tcp6:// url might be more
elegant.
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Sleep() on Win32 rounds *down*, leading to truncated timeouts.
What we do is change our sleep routing to start incrementally
sleeping by 1ms until the tick count is reached. This ensures
we don't wake early.
This problem affects condition variables too, which means that some
timeouts may occur up to one clock tick early (15ish ms). This should
not be a problem for most users, who should really only be setting
timeouts in quantities of a second or greater.
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This compiles correctly, but doesn't actually deliver events yet.
As part of this, I've made most of the initializables in nng
safe to tear-down if uninitialized (or set to zero e.g. via calloc).
This makes it loads easier to write the teardown on error code, since
I can deinit everything, without worrying about which things have been
initialized and which have not.
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Test code needs to use the static libraries so that they can get access
to the entire set of symbols, including private ones that are not exported.
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It turns out that I didn't quite understand overlapped I/O. We can and
should always do the GetOverlappedResult(), regardless of how the routine
returns.
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Since we use the tick counter to sleep, we should use the same clock
for validation. The problem is that the high performance tick counter
on the CPU may be slightly out of agreement with the windows clock.
Furthermore, the tick counter is probably lots faster to retrieve since
it is already updated, and needn't be recalculated each time.
(We should consider just switching to millisecond clock resolution
internally as well. It turns out that I don't think that timers that
are shorter than 1ms are very useful.)
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There are lots of changes here, mostly stuff we did in support of
Windows TCP. However, there are some bugs that were fixed, and we
added some new error codes, and generalized the handling of some failures
during accept. Windows IPC (NamedPipes) is still missing.
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Windows is getting there. Needs a couple of more more hours to enable
everything, especially IPC, and most of the work at this point is probably
some combination of debug and tweaking things like error handling.
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Platforms must seed the pRNGs by offering an nni_plat_seed_prng()
routine. Implementations for POSIX using various options (including
the /dev/urandom device) are supplied.
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There is an occasional use-after-free bug we need to fix still.
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This also adds checks in the protocols to verify that pipe peers
are of the proper protocol.
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This uncovered a few problems - inproc was not moving the headers
to the body on transmit, and the message chunk allocator had a serious
bug leading to memory corruption. I've also added a message dumper,
which turns out to be incredibly useful during debugging.
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This may also address a race in closing down pipes. Now pipes are always
registered with the socket. They also always have both a sender and receiver
thread. If the protocol doesn't need one or the other, the stock thread just
exits early.
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At this point listening and dialing operations appear to function properly.
As part of this I had to break the close logic up since otherwise we had a
loop trying to reap a thread from itself. So there is now a separate reaper
thread for pipes per-socket. I also changed lists to be a bit more rigid,
and allocations now zero memory initially. (We had bugs due to uninitialized
memory, and rather than hunt them all down, lets just init them to sane zero
values.)
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default.
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code with uncrustify. (Minor adjustments.) No more arguments!
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The idea is that someday it will be possible to just concatenate the entire
set of source files into a single giant source file, for systems that
want to work this way. As a result, the build system now compiles every
file, although some of them will not have any definitions.
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trying to come to a fork-safe solution, but ultimately we gave up.
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