delta/cpython-git.git/Modules/_tracemalloc.c, branch enum-lost-fixes

[3.10] Fix typos in the Modules directory (GH-28761) (GH-28781)

2021-10-07T08:55:18+00:00

(cherry picked from commit dd02a696e55b450413e765e698e653d781ca4205)


Co-authored-by: Christian Clauss 

Automerge-Triggered-By: GH:gpshead

bpo-41995: Fix null ptr deref in tracemalloc_copy_trace() (GH-22660)

2020-10-13T06:46:31+00:00

Fix a null pointer dereference in tracemalloc_copy_trace()
of _tracemalloc.

Remove dead code from tracemalloc (GH-21029)

2020-06-27T12:13:47+00:00

tracemalloc_get_frame() checked filename == NULL two times in a row.

Signed-off-by: Christian Heimes

bpo-40630: Add tracemalloc.reset_peak (GH-20102)

2020-05-22T14:18:51+00:00

The reset_peak function sets the peak memory size to the current size,
representing a resetting of that metric. This allows for recording the
peak of specific sections of code, ignoring other code that may have
had a higher peak (since the most recent `tracemalloc.start()` or
tracemalloc.clear_traces()` call).

bpo-40609: _Py_hashtable_t values become void* (GH-20065)

2020-05-13T02:40:30+00:00

_Py_hashtable_t values become regular "void *" pointers.

* Add _Py_hashtable_entry_t.data member
* Remove _Py_hashtable_t.data_size member
* Remove _Py_hashtable_t.get_func member. It is no longer needed
  to specialize _Py_hashtable_get() for a specific value size, since
  all entries now have the same size (void*).
* Remove the following macros:

  * _Py_HASHTABLE_GET()
  * _Py_HASHTABLE_SET()
  * _Py_HASHTABLE_SET_NODATA()
  * _Py_HASHTABLE_POP()

* Rename _Py_hashtable_pop() to _Py_hashtable_steal()
* _Py_hashtable_foreach() callback now gets key and value rather than
  entry.
* Remove _Py_hashtable_value_destroy_func type. value_destroy_func
  callback now only has a single parameter: data (void*).

bpo-40609: _tracemalloc allocates traces (GH-20064)

2020-05-13T01:52:11+00:00

Rewrite _tracemalloc to store "trace_t*" rather than directly
"trace_t" in traces hash tables. Traces are now allocated on the heap
memory, outside the hash table.

Add tracemalloc_copy_traces() and tracemalloc_copy_domains() helper
functions.

Remove _Py_hashtable_copy() function since there is no API to copy a
key or a value.

Remove also _Py_hashtable_delete() function which was commented.

bpo-40609: Add destroy functions to _Py_hashtable (GH-20062)

2020-05-13T00:50:18+00:00

Add key_destroy_func and value_destroy_func parameters to
_Py_hashtable_new_full().

marshal.c and _tracemalloc.c use these destroy functions.

bpo-40609: Remove _Py_hashtable_t.key_size (GH-20060)

2020-05-13T00:26:02+00:00

Rewrite _Py_hashtable_t type to always store the key as
a "const void *" pointer. Add an explicit "key" member to
_Py_hashtable_entry_t.

Remove _Py_hashtable_t.key_size member.

hash and compare functions drop their hash table parameter, and their
'key' parameter type becomes "const void *".

bpo-40609: Rewrite how _tracemalloc handles domains (GH-20059)

2020-05-12T23:36:47+00:00

Rewrite how the _tracemalloc module stores traces of other domains.
Rather than storing the domain inside the key, it now uses a new hash
table with the domain as the key, and the data is a per-domain traces
hash table.

* Add tracemalloc_domain hash table.
* Remove _Py_tracemalloc_config.use_domain.
* Remove pointer_t and related functions.

bpo-40602: Rename hashtable.h to pycore_hashtable.h (GH-20044)

2020-05-12T00:42:19+00:00

* Move Modules/hashtable.h to Include/internal/pycore_hashtable.h
* Move Modules/hashtable.c to Python/hashtable.c
* Python is now linked to hashtable.c. _tracemalloc is no longer
  linked to hashtable.c. Previously, marshal.c got hashtable.c via
  _tracemalloc.c which is built as a builtin module.