When upgrading native-library versions, a still-relevant
patch got lost. The patch corrects a problem with empty
glyphs getting treated as missing glyphs.
Closesracket/pict#42
The pattern
(ephemeron-value
(hash-ref! intern key
(lambda ()
(make-ephemeron key (wrap key)))))
is wrong, because a GC might happen between the time that the
epehemeron is found in the table (or the time that the key was just
added to the table) and the time that `ephemeron-value` is called to
extract the value. If the key is not otherwise accessible, the value
may no longer be in the ephemeron.
If `make cs` is run without specifying a SCHEME_SRC, then make sure
that `configure` and `make` are re-run in the Chez Scheme checkout,
in case it was updated.
A collection can only invoke certain callabcks (e.g., for DrRacket's
GC icon) when the collection is performed in the main thread. Also,
delay posting GC logging events to receivers that cannot work at
interrupt time.
This reverts commit 41fd4f3a5e.
The problems this change was intended to solve can be solved in other
ways, without loosening guarantees about expansion order. See the
discussion in #2154 for more details.
closes#2154
The procsses-based build was technically broken with the addition of a
"prefetch" thread (some time back) to improve parallelism, because the
`write`-based implementation of messages did not protect again
interleaving by different threads. The problem turns out to be easier
to expose when running with RacketCS.
Formerly, `--scope-dir` would include only the specified directory in
the search path for already installed packages, etc., which means that
it would only work right as a kind of installation scope that is a
step beyond "installation" on the "user"-to-"installation" spectrum.
The `'pkgs-search-dirs` confiugration entry, meanwhile, provides more
control over search ordering in installation scope. Make `--scope-dir`
work more consistently with that search-path configration.
This change also makes "instllation"-scope operations use the search
path more consistently, since some actions used to use the whole
search list while others pruned any prefix before the main
installation directory in the search list.
Add a way to declare an Objective-C method call as blocking in the
sense of the `#:blocking?` argument to `_cprocedure`.
Usingf `with-blocking-tell` should allow the Cocoa backend for
`racket/gui` to wait for events in the main place without blocking
other places.
Fix various problems with the implementation of places, and let
`processor-count` return the actual number of processors. A parallel
build via `raco setup` seems to work but not scale well.
Instead of defining `rktio_fd_t` to be independent of a `rktio_t`,
which isnt quite true, introduce `rktio_fd_detach` and
`rktio_fd_attach` functions to make a transfer explicit, such as when
a file descriptor goes through a place channel.
This adjustment avoids a corner case in cleaning up a file descriptor
from an abandoned channel, where the finalizer might run in a Chez
Scheme thread that is not associated with any place.
