gh-142352: Fix `asyncio` `start_tls()` to transfer buffered data from StreamReader (GH-142354)
(cherry picked from commit 0598f4a899)
Co-authored-by: Kumar Aditya <kumaraditya@python.org>
Co-authored-by: Maksym Kasimov <39828623+kasimov-maxim@users.noreply.github.com>
Since os.stat() raises an OSError for existing named pipe "\\.\pipe\...",
os.path.exists() always returns False for it, and tempfile.mktemp() can
return a name that matches an existing named pipe.
So, tempfile.mktemp() cannot be used to generate unique names for named
pipes. Instead, CreateNamedPipe() should be called in a loop with
different names until it completes successfully.
(cherry picked from commit d6a71f4690)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-140648: Make asyncio REPL respect the `-I` flag (isolated mode) (GH-143045)
(cherry picked from commit e7c542de5f)
Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>
gh-143046: Make asyncio REPL respect the `-q` flag (quiet mode) (GH-143047)
(cherry picked from commit 6213a512bf)
Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>
gh-142784: make the asyncio REPL call `loop.close()` at exit (GH-142785)
(cherry picked from commit ddfc155d3a)
Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>
gh-135444: fix `asyncio.DatagramTransport.sendto` to account for datagram header size when data cannot be sent (GH-135445)
(cherry picked from commit e3ea861351)
Co-authored-by: Justin Bronder <jsbronder@cold-front.org>
Co-authored-by: Kumar Aditya <kumaraditya@python.org>
gh-136447: Use `self.loop` instead of global `loop` variable in asyncio REPL (GH-136448)
(cherry picked from commit 77fa7a4dcc)
Co-authored-by: Justin Su <injustsu@gmail.com>
gh-91048: Refactor and optimize remote debugging module (#134652)
Completely refactor Modules/_remote_debugging_module.c with improved
code organization, replacing scattered reference counting and error
handling with centralized goto error paths. This cleanup improves
maintainability and reduces code duplication throughout the module while
preserving the same external API.
Implement memory page caching optimization in Python/remote_debug.h to
avoid repeated reads of the same memory regions during debugging
operations. The cache stores previously read memory pages and reuses
them for subsequent reads, significantly reducing system calls and
improving performance.
Add code object caching mechanism with a new code_object_generation
field in the interpreter state that tracks when code object caches need
invalidation. This allows efficient reuse of parsed code object metadata
and eliminates redundant processing of the same code objects across
debugging sessions.
Optimize memory operations by replacing multiple individual structure
copies with single bulk reads for the same data structures. This reduces
the number of memory operations and system calls required to gather
debugging information from the target process.
Update Makefile.pre.in to include Python/remote_debug.h in the headers
list, ensuring that changes to the remote debugging header force proper
recompilation of dependent modules and maintain build consistency across
the codebase.
Also, make the module compatible with the free threading build as an extra :)
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
(cherry picked from commit 42b25ad4d3)
gh-134451: Converted `asyncio.tools.CycleFoundException` from dataclass to a regular exception type. (GH-134513)
(cherry picked from commit f9324cb3cb)
Co-authored-by: Evgeny Demchenko <v1mpire@icloud.com>
gh-114177: avoid calling connection lost callbacks when loop is already closed in asyncio subprocess (GH-134508)
(cherry picked from commit 5804ee7b46)
Co-authored-by: Kumar Aditya <kumaraditya@python.org>
Store the current running task on the thread state, it makes it thread safe for the free-threading build and while improving performance as there is no lock contention, this effectively makes it lock free.
When accessing the current task of the current running loop in current thread, no locking is required and can be acessed without locking.
In the rare case of accessing current task of a loop running in a different thread, the stop the world pauses is used in free-threading builds to stop all other running threads and find the task for the specified loop.
This also makes it easier for external introspection to find the current task, and now it will be always correct.
