Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

bpo-42262: Add Py_NewRef() function #23152

Merged
merged 3 commits into from
Nov 5, 2020
Merged

bpo-42262: Add Py_NewRef() function #23152

merged 3 commits into from
Nov 5, 2020

Conversation

vstinner
Copy link
Member

@vstinner vstinner commented Nov 4, 2020

Add Py_NewRef() function to get a strong reference to an object.

https://bugs.python.org/issue42262

@vstinner
Copy link
Member Author

vstinner commented Nov 4, 2020

Ubuntu failed with a download error:

E: Failed to fetch http://azure.archive.ubuntu.com/ubuntu/pool/main/b/babeltrace/libbabeltrace1_1.5.5-1_amd64.deb Could not connect to azure.archive.ubuntu.com:80 (52.252.75.106), connection timed out

@vstinner vstinner closed this Nov 4, 2020
@vstinner vstinner reopened this Nov 4, 2020
@vstinner
Copy link
Member Author

vstinner commented Nov 4, 2020

I closed/reopened the PR to re-run the Ubuntu job.

@vstinner
Copy link
Member Author

vstinner commented Nov 4, 2020

cc @methane @serhiy-storchaka

@vstinner vstinner requested a review from a team as a code owner November 4, 2020 20:02
Copy link
Member

@methane methane left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Would you improve the doc to describe the difference to Py_INCREF?

@vstinner
Copy link
Member Author

vstinner commented Nov 4, 2020

@methane:

Would you improve the doc to describe the difference to Py_INCREF?

I rewrote the function documentation. Is the difference between Py_INCREF() and Py_NewRef() more explicit now?

I also added Py_XNewRef() which accepts NULL.

Added Py_NewRef() function to increment the reference count of an
object and return the object.
Objects/object.c Outdated
@@ -136,6 +136,21 @@ Py_DecRef(PyObject *o)
Py_XDECREF(o);
}

#undef Py_NewRef
#undef Py_XNewRef
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Perhaps redefine these 2 macros after defining the 2 functions, so this file can enjoy the static inline version as well?

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Good idea. I moved the definitions at the bottom of object.c, so object.c gets the fast static inlined flavor as well.

Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I moved the definitions at the bottom of object.c,

Even better :)

@methane
Copy link
Member

methane commented Nov 5, 2020

I rewrote the function documentation. Is the difference between Py_INCREF() and Py_NewRef() more explicit now?

LGTM.

@vstinner vstinner merged commit 53a03aa into python:master Nov 5, 2020
@vstinner vstinner deleted the newref branch November 5, 2020 14:02
@vstinner
Copy link
Member Author

vstinner commented Nov 5, 2020

Thanks for the review @methane and @Jongy !

shihai1991 added a commit to shihai1991/cpython that referenced this pull request Nov 6, 2020
* origin/master:
  bpo-42179: Doc/tutorial: Remove mention of __cause__ (pythonGH-23162)
  bpo-26389: Allow passing an exception object in the traceback module (pythonGH-22610)
  bpo-42260: PyConfig_Read() only parses argv once (pythonGH-23168)
  bpo-42260: Add _PyConfig_FromDict() (pythonGH-23167)
  bpo-41877 Check for asert, aseert, assrt in mocks (pythonGH-23165)
  [docs] fix wrongly named AsyncContextDecorator (pythonGH-23164)
  bpo-42262: Add Py_NewRef() and Py_XNewRef() (pythonGH-23152)
  bpo-42266: Handle monkey-patching descriptors in LOAD_ATTR cache (pythonGH-23157)
  bpo-40816 Add AsyncContextDecorator class (pythonGH-20516)
shihai1991 added a commit to shihai1991/cpython that referenced this pull request Nov 7, 2020
…lots1

* origin/master: (80 commits)
  bpo-42282: Fold constants inside named expressions (pythonGH-23190)
  bpo-41028: Doc: Move switchers to docsbuild-scripts. (pythonGH-20969)
  bpo-42133: update parts of the stdlib to fall back to `__spec__.loader` when `__loader__` is missing (python#22929)
  Remove outdated reference to pywin32 from platform module (pythonGH-22005)
  bpo-41832: PyType_FromModuleAndSpec() now accepts NULL tp_doc (pythonGH-23123)
  Minor grammar edits for the descriptor howto guide (GH-python#23175)
  bpo-42179: Doc/tutorial: Remove mention of __cause__ (pythonGH-23162)
  bpo-26389: Allow passing an exception object in the traceback module (pythonGH-22610)
  bpo-42260: PyConfig_Read() only parses argv once (pythonGH-23168)
  bpo-42260: Add _PyConfig_FromDict() (pythonGH-23167)
  bpo-41877 Check for asert, aseert, assrt in mocks (pythonGH-23165)
  [docs] fix wrongly named AsyncContextDecorator (pythonGH-23164)
  bpo-42262: Add Py_NewRef() and Py_XNewRef() (pythonGH-23152)
  bpo-42266: Handle monkey-patching descriptors in LOAD_ATTR cache (pythonGH-23157)
  bpo-40816 Add AsyncContextDecorator class (pythonGH-20516)
  bpo-42260: Add _PyInterpreterState_SetConfig() (pythonGH-23158)
  Disable peg generator tests when building with PGO (pythonGH-23141)
  bpo-1635741: _sqlite3 uses PyModule_AddObjectRef() (pythonGH-23148)
  bpo-1635741: Fix PyInit_pyexpat() error handling (pythonGH-22489)
  bpo-42260: Main init modify sys.flags in-place (pythonGH-23150)
  ...
adorilson pushed a commit to adorilson/cpython that referenced this pull request Mar 13, 2021
Added Py_NewRef() and Py_XNewRef() functions to increment the reference
count of an object and return the object.
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

5 participants