Python triggered the undefined behavior previously since it appears to
be posting to a semaphore owned by a different process that wasn't set
to process shared mode. The performance loss to process shared futexes
is so low and semaphores are generally used for this purpose, so it'll
be much simpler to simply not impose undefined behavior here.
Python threads are now generally working, however some parts of Python's
regression tests for threads are flaky. This is possibly due to needing
more locking primitives in Cosmo's IO system call wrappers, e.g. close.
make o//third_party/python/Lib/test/test_threading.py.runs
See #747
- enable WITH_THREAD and _POSIX_THREADS
- add headers everywhere
- breaks only two tests (faulthandler and signal)
- disabled terminal completion because it causes segfaults for some
reason (probably could not get the current thread)
This fixes a bug where the caller's timeval will be clobbered on Linux.
The Kernel ABI *always* modifies the timeout argument but POSIX says it
should be a const parameter. The wrapper now handles the difference and
sys_select() may be used if obtaining the remainder on Linux is needed.
The system call wrapper was wrongfully reinterpreting kernel data. The
examples/sysinfo.c program is now updated to show how to correctly use
what's returned.
It's been superseded by token bucket processing, does not take time
into considerations (only the number of fragments), and affects file
uploads that may require a large number of reads.
Your APE binaries will now run on eight hardware architectures. The
tradeoff is this change adds about 800kb of bloat to the executable
which to be fair is still more than half as small as Go hello world
Your APE shell script extracts an embedded build of Blink, based on
`$(uname -m)`. The Blink binaries are statically-linked (manylinux)
which means, they'll run on every distro's stock install, including
Apple M1's that haven't enabled Rosetta. Blink's emulation has been
designed to be nearly as fast as Rosetta, using a JIT technique for
faster startup time. Blink has also been tested more thoroughly, w/
emulating Cosmopolitan software, since we're the ones who wrote it.
