Run debugger scripts in their own namespaces
Previously scripts injected by `sys.remote_exec` were run with the
globals of the `__main__` module. Instead, run each injected script
with an empty set of globals. If someone really wants to use the
`__main__` module's namespace, they can always `import __main__`.
For the same reasons as running the GC, this will allow sections that
run in native code for long periods without executing bytecode to also
run the remote debugger protocol without having to wait until bytecode
is executed
Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
Improve the error message with a suggestion when an object supporting the synchronous
(resp. asynchronous) context manager protocol is entered using `async with` (resp. `with`)
instead of `with` (resp. `async with`).
Save and restore exceptions during take_ownership processing to preserve
exceptions currently being raised.
Co-authored-by: alperyoney <alperyoney@fb.com>
Fixed an assertion error (so, it could be reproduced only in builds with assertions enabled)
for `exec` when the `source` argument is a string and the `closure` argument is not `None`.
Co-authored-by: sobolevn <mail@sobolevn.me>
Only disable SLP autovectorization of `_PyEval_EvalFrameDefault` on newer
GCCs, as the optimization bug seems to exist only on GCC 12 and later, and
before GCC 9 disabling the optimization has a dramatic performance impact.
Mark a few functions used by the interpreter loop as noinline
These are all the slow path and should not be inlined into the interpreter
loop. Unfortunately, they end up being inlined with LTO and the current PGO
task.
Make `warnings.catch_warnings()` use a context variable for holding
the warning filtering state if the `sys.flags.context_aware_warnings`
flag is set to true. This makes using the context manager thread-safe in
multi-threaded programs.
Add the `sys.flags.thread_inherit_context` flag. If true, starting a new
thread with `threading.Thread` will use a copy of the context
from the caller of `Thread.start()`.
Both these flags are set to true by default for the free-threaded build
and false for the default build.
Move the Python implementation of warnings.py into _py_warnings.py.
Make _contextvars a builtin module.
Co-authored-by: Kumar Aditya <kumaraditya@python.org>
The SLP autovectorizer can cause poor code generation for opcode dispatch, negating any benefit we get from vectorization elsewhere in the interpreter loop.
Non-tuple sequences are deprecated as argument for the "(items)" format unit
in PyArg_ParseTuple() and other argument parsing functions if items contains
format units which store borrowed buffer or reference (e.g. "s" and "O").
str and bytearray are no longer accepted as valid sequences.
