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This commit completes the final step: fixing the final failing tests (in
chessboard.mu) by teaching `restart` about the block signal.
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Fix failing scenarios in channel layer. We do so by introducing a kludgy
new instruction to explicitly signal when a routine is stuck ('blocked')
and waiting on another.
All this locking and blocking may well be a crap design. We'll see if we
find ourselves using these primitives again. Ideally we don't need them
for anything else now that we're done building channels.
Still some failing scenarios left in chessboard.mu. Let's see how that
goes.
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Reorder `wait-for-routine-to-block` to be close to related routines
`switch` and `restart`.
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Previously our channels were based on an unconventional
`wait-for-location` primitive that waits for a specific address to
change its contents. This only works as long as a channel has a single
reader and a single writer routine. To support multiple readers and
writers we switch to a more conventional compare-and-set primitive.
There's still a couple of failing scenarios, though -- the ones using
`wait-for-routine-to-block`, because the new approach never blocks on an
empty or full channel, just yields CPU for a time before polling. Hmm,
how to fix this?
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Three separate CI fixes(!)
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Fix a warning on some compilers.
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Expand type abbreviations when checking for colliding/redefined
variants.
This may need a separate transform if we ever find the need to use type
abbreviations before defining them.
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Done using 'text' type abbreviation everywhere.
There's still a problem. If we define a function with a type
abbreviation and then redefine it without, I think we end up creating
separate variants. That seems wrong. Let's isolate a scenario for that
next.
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Process type abbreviations in *shape-shifting* function headers.
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Reorganize layers a bit so I can add a couple of scenarios testing
static dispatch *before* I add `stash` into the mix.
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Process type abbreviations in function headers.
Still a couple of places where doing this causes strange errors. We'll
track those down next.
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Rename files to be consistent with my (forgotten) convention of always
using underscores over hyphens.
I'll leave server-socket.mu alone for now, since Stephen's hacking on
it.
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Fix a couple of failing example programs.
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Process type abbreviations in container definitions.
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In the process I've uncover a couple of situations we don't support type
abbreviations yet. They're next.
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Clean up rest of long-standing bit of ugliness.
I'm growing more confident now that I can use layers to cleanly add any
functionality I want. All I need is hook functions. No need to ever put
'{' on their own line, or add arguments to calls.
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Clean up one long-standing bit of ugliness.
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Fix CI #2: memory leaks.
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Fix CI.
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The old approach with '&' and '@' modifiers turned out to be a bad idea
because it introduces notions of precedence. Worse, it turns out you
want different precedence rules at different times as the old test
alluded:
x:@number:3 # we want this to mean (address number 3)
x:address:@number # we want this to mean (address array number)
Instead we'll give up and focus on a single extensible mechanism that
allows us to say this instead:
x:@:number:3
x:address:@:number
In addition it allows us to shorten other types as well:
x:&:@:num
type board = &:@:&:@:char # for tic-tac-toe
Hmm, that last example reminds me that we don't handle abbreviations
inside type abbreviation definitions so far..
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Includes four Mu functions:
- $socket: Creates the C structure for a socket and tries to bind and
listen on a user-provided port.
- $accept: Returns a number pointer to a new socket session. Should
be called with the result of $socket.
- $read-from-socket: Read one character from the socket, passed in
as a Mu number. Should only be called after calling $socket and
$accept.
- $close-socket: Takes two parameters, one for the result of $socket
and one for the result of $accept, closing both sockets
and releasing bound ports.
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Clean up another case (after commit 3309) of premature support for
shape-shifting recipes, where early layers had code without
corresponding tests.
One addendum to commit 3309: the proximal cause for triggering the
rewrite of type_trees was that I realized to_string() and variants were
lying to me while debugging; they couldn't distinguish between `(a . b)`
and `((a) . b)`
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Describe immutability checks in the Readme.
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