[issue47046] Add `f_state` attribute to FrameObjects.
Mark Shannon added the comment: Don't you need to know if a "call" event is a call or the resumption of a generator? -- ___ Python tracker <https://bugs.python.org/issue47046> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue40421] [C API] Add public getter functions for the internal PyFrameObject structure
Change by Mark Shannon : -- pull_requests: +30439 pull_request: https://github.com/python/cpython/pull/32413 ___ Python tracker <https://bugs.python.org/issue40421> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47248] Possible slowdown of regex searching in 3.11
New submission from Mark Shannon : The 3 regular expression benchmarks in the pyperformance suite, regex_v8, regex_effbot and regex_dna show slowdowns between 3% and 10%. Looking at the stats, nothing seems wrong with specialization or the memory optimizations. Which strongly suggests a regression in the sre module itself, but I can't say so for certain. -- keywords: 3.11regression messages: 416923 nosy: Mark.Shannon priority: normal severity: normal status: open title: Possible slowdown of regex searching in 3.11 type: performance versions: Python 3.11 ___ Python tracker <https://bugs.python.org/issue47248> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47009] Streamline list.append for the common case
Mark Shannon added the comment: New changeset 6c6e0408a663c1f53dad403f54a18d444da39cb7 by Dennis Sweeney in branch 'main': bpo-47009: Let PRECALL_NO_KW_LIST_APPEND do its own POP_TOP (GH-32239) https://github.com/python/cpython/commit/6c6e0408a663c1f53dad403f54a18d444da39cb7 -- ___ Python tracker <https://bugs.python.org/issue47009> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45317] Document the removal the usage of the C stack in Python to Python calls
Change by Mark Shannon : -- keywords: +patch pull_requests: +30367 stage: -> patch review pull_request: https://github.com/python/cpython/pull/32304 ___ Python tracker <https://bugs.python.org/issue45317> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue44800] Code readability: rename InterpreterFrame to `_Py_framedata`
Mark Shannon added the comment: New changeset 8a349eb30b54bab9a7146fc10e3379c3cacaa19e by Mark Shannon in branch 'main': Revert "bpo-44800: Document internal frame naming conventions (GH-32281)" (#32301) https://github.com/python/cpython/commit/8a349eb30b54bab9a7146fc10e3379c3cacaa19e -- ___ Python tracker <https://bugs.python.org/issue44800> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47215] Add "unstable" frame stack api
Change by Mark Shannon : -- keywords: +patch pull_requests: +30366 stage: needs patch -> patch review pull_request: https://github.com/python/cpython/pull/32303 ___ Python tracker <https://bugs.python.org/issue47215> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47215] Add "unstable" frame stack api
New submission from Mark Shannon :
We need to provide an API to create, swap and free frame stacks for greenlets.
Since this is primarily for greenlets (and any other stackful coroutines
libraries that want to use it) it will be "unstable".
In this case, by "unstable" I mean:
1. Starts with an underscore
2. Gets PyAPI_FUNC annotations, so we don't strip the symbols from the
executable
3. Undocumented, except for comments that say it is unstable.
The API will be:
```
typedef struct _frame_stack {
_PyStackChunk *current_chunk;
PyObject **top;
PyObject **limit;
int chunk_size;
} _PyFrameStack;
PyAPI_FUNC(void) _PyFrameStack_Init(_PyFrameStack *fs, int chunk_size);
PyAPI_FUNC(void) _PyFrameStack_Swap(_PyFrameStack *fs);
PyAPI_FUNC(void) _PyFrameStack_Free(_PyFrameStack *fs);
```
--
assignee: Mark.Shannon
components: C API
messages: 416665
nosy: Mark.Shannon, brandtbucher
priority: normal
severity: normal
stage: needs patch
status: open
title: Add "unstable" frame stack api
type: enhancement
versions: Python 3.11
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[issue44800] Code readability: rename InterpreterFrame to `_Py_framedata`
Change by Mark Shannon : -- pull_requests: +30363 pull_request: https://github.com/python/cpython/pull/32301 ___ Python tracker <https://bugs.python.org/issue44800> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47172] Make virtual opcodes in the compiler negative and is_jump() identify only proper jumps
Mark Shannon added the comment: New changeset 997ba5d126f5040d5b7536f73bc89049e9f9421d by Irit Katriel in branch 'main': bpo-47172: Compiler enhancements (GH-32200) https://github.com/python/cpython/commit/997ba5d126f5040d5b7536f73bc89049e9f9421d -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue47172> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47186] split JUMP_IF_NOT_EXC/EG_MATCH into CHECK_EXC/EG_MATCH + jump
Mark Shannon added the comment: New changeset 04e07c258f4f2ac85e25355242a113f98a706f04 by Irit Katriel in branch 'main': bpo-47186: Replace JUMP_IF_NOT_EXC_MATCH by CHECK_EXC_MATCH + jump (GH-32231) https://github.com/python/cpython/commit/04e07c258f4f2ac85e25355242a113f98a706f04 -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue47186> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset ae9de82e321581e1906c6ef2a7ad83ab30ae3325 by Brandt Bucher in branch 'main': bpo-46841: Use a `bytes` object for `_co_code_adaptive` (GH-32205) https://github.com/python/cpython/commit/ae9de82e321581e1906c6ef2a7ad83ab30ae3325 -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset bd2e47c8830d1b2869f2b4345945a5e0c3b4e3fb by Brandt Bucher in branch 'main': bpo-46841: Avoid unnecessary allocations in code object comparisons (GH-3) https://github.com/python/cpython/commit/bd2e47c8830d1b2869f2b4345945a5e0c3b4e3fb -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47009] Streamline list.append for the common case
Mark Shannon added the comment: New changeset a0ea7a116ce52a178c02d42b684089758bd7f355 by Dennis Sweeney in branch 'main': bpo-47009: Streamline list.append for the common case (GH-31864) https://github.com/python/cpython/commit/a0ea7a116ce52a178c02d42b684089758bd7f355 -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue47009> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue40421] [C API] Add public getter functions for the internal PyFrameObject structure
Mark Shannon added the comment: New changeset 74b95d86e0f14603f878c4df3133bc8a93f8f80a by Mark Shannon in branch 'main': bpo-40421: Add missing getters for frame object attributes to C-API. (GH-32114) https://github.com/python/cpython/commit/74b95d86e0f14603f878c4df3133bc8a93f8f80a -- ___ Python tracker <https://bugs.python.org/issue40421> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47120] Make all jump opcodes relative
Mark Shannon added the comment: New changeset a00518d9ad9a8f408a9699191019d75dd8406c32 by Irit Katriel in branch 'main': bpo-47120: Replace the JUMP_ABSOLUTE opcode by the relative JUMP_BACKWARD (GH-32115) https://github.com/python/cpython/commit/a00518d9ad9a8f408a9699191019d75dd8406c32 -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue47120> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47164] [C API] Add private "CAST" macros to clean up casts in C code
Mark Shannon added the comment:
The problem in the example you give is the need for the cast in the first
place. If `func` were a `PyCFunctionObject *` instead of a `PyObject *`, then
there would be no cast.
Making the casts explicit serves as a reminder that a type check is needed.
```
PyObject *func = ...;
int flags = PyCFunction_GET_FLAGS(func);
```
is dangerous.
```
PyObject *obj = ...;
if (PyCFunction_Check(obj)) {
PyCFunctionObject *func = (PyCFunctionObject *)obj;
int flags = func->m_ml->ml_flags;
```
is safe.
--
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[issue47164] [C API] Add private "CAST" macros to clean up casts in C code
Mark Shannon added the comment: I think that adding macros makes readability worse. The macro is only more readable if you already know what it does. If you don't, then you need to look up the macro, and understand the cast in the macro (which is harder than understanding the original cast). In general, I find the excessive use of macros and tiny inline function obscures the meaning of code, and makes it hard to reason about what the code is doing. A few well chosen macros (like Py_INCREF(), etc) can definitely help readability, but if there are too many then anyone reading the code ends up having to lookup loads of macro definitions to understand the code. Without the macro, the reader needs to parse the cast, which is admittedly a -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue47164> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47053] Reduce de-optimization in BINARY_OP_INPLACE_ADD_UNICODE
Mark Shannon added the comment: New changeset cca43b7d64f47ea921d0f7a347ae1a839c5463c3 by Dennis Sweeney in branch 'main': bpo-47053: Reduce deoptimization in BINARY_OP_INPLACE_ADD_UNICODE (GH-31318) https://github.com/python/cpython/commit/cca43b7d64f47ea921d0f7a347ae1a839c5463c3 -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue47053> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue40421] [C API] Add public getter functions for the internal PyFrameObject structure
Change by Mark Shannon : -- pull_requests: +30190 pull_request: https://github.com/python/cpython/pull/32114 ___ Python tracker <https://bugs.python.org/issue40421> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue42197] Disable automatic update of frame locals during tracing
Mark Shannon added the comment: New changeset d7163bb35d1ed46bde9affcd4eb267dfd0b703dd by Mark Shannon in branch 'main': bpo-42197: Don't create `f_locals` dictionary unless we actually need it. (GH-32055) https://github.com/python/cpython/commit/d7163bb35d1ed46bde9affcd4eb267dfd0b703dd -- ___ Python tracker <https://bugs.python.org/issue42197> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue42917] Block stack size for frame objects should be dynamically sizable
Mark Shannon added the comment: With the introduction of zero cost exceptions, there is no block stack. -- resolution: -> out of date stage: patch review -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue42917> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue42197] Disable automatic update of frame locals during tracing
Change by Mark Shannon : -- pull_requests: +30147 pull_request: https://github.com/python/cpython/pull/32055 ___ Python tracker <https://bugs.python.org/issue42197> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue42917] Block stack size for frame objects should be dynamically sizable
Change by Mark Shannon : -- pull_requests: +30145 pull_request: https://github.com/python/cpython/pull/32055 ___ Python tracker <https://bugs.python.org/issue42917> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47092] [C API] Add PyFrame_GetVar(frame, name) function
Mark Shannon added the comment: I'm looking into adding two new APIs. One to round out the getters for FrameObject and one to introspect the internal frame stack. It would probably make more sense to add this capability to the frame stack API, as it would avoid creating the frame object as well as the locals dictionary. E.g. `PyFrameStack_GetVar(int depth, PyObject *name)` -- ___ Python tracker <https://bugs.python.org/issue47092> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46724] Odd Bytecode Generation in 3.10
Mark Shannon added the comment: I think this is fixed (for 3.11 at least) by https://github.com/python/cpython/pull/31888 -- ___ Python tracker <https://bugs.python.org/issue46724> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47045] Remove the RESUME instruction
Mark Shannon added the comment: New changeset 49daf6dba8178c5ae5d4d65408b20566d39c36a8 by Mark Shannon in branch 'main': bpo-47045: Remove `f_state` field (GH-31963) https://github.com/python/cpython/commit/49daf6dba8178c5ae5d4d65408b20566d39c36a8 -- ___ Python tracker <https://bugs.python.org/issue47045> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47085] missing frame.f_lineno on JUMP_ABSOLUTE
Mark Shannon added the comment: The `JUMP_ABSOLUTE` doesn't have a line number, as it doesn't correspond to any source. The jump back to the top could follow either the `if i >= 0:` or the `pass`, so cannot have a line number. Don't expect every bytecode to map directly back to the source, especially if it cannot raise an exception. Per-line tracing is well defined by PEP 626. Per-opcode tracing is not. -- resolution: -> not a bug stage: -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue47085> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45563] inspect.getframeinfo() doesn't handle frames without lineno
Mark Shannon added the comment: You are on own if you create code objects by calling `types.CodeType`. The docs could be a lot clearer about that, though. -- ___ Python tracker <https://bugs.python.org/issue45563> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 2bde6827ea4f136297b2d882480b981ff26262b6 by Brandt Bucher in branch 'main': bpo-46841: Quicken code in-place (GH-31888) https://github.com/python/cpython/commit/2bde6827ea4f136297b2d882480b981ff26262b6 -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47045] Remove the RESUME instruction
Change by Mark Shannon : -- keywords: +patch pull_requests: +30052 stage: -> patch review pull_request: https://github.com/python/cpython/pull/31963 ___ Python tracker <https://bugs.python.org/issue47045> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47046] Add `f_state` attribute to FrameObjects.
New submission from Mark Shannon : When tracing, the event supplied is insufficient to determine what is actually happening. E.g. A "call" event could be a call to a function or resuming a generator or coroutine. Adding a state field to the FrameObject would allow these cases to be disambiguated without having to make dubious deductions from `f_lasti` or other frame attributes. The proposed states would be: FRAME_CREATED# Frame created, but not executed at all FRAME_SUSPENDED # Frame suspended after yield or yield from FRAME_EXECUTING # Frame is executed normally FRAME_COMPLETED # Frame has completed FRAME_CLEARED# Frame has been cleared Ned, any other states that you might need to know about? -- messages: 415427 nosy: Mark.Shannon, nedbat priority: normal severity: normal status: open title: Add `f_state` attribute to FrameObjects. ___ Python tracker <https://bugs.python.org/issue47046> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue47045] Remove the RESUME instruction
New submission from Mark Shannon : The RESUME instruction was added to make resumption points explicit in the bytecode. This makes it easier to implement tracing, quickening, and interrupt checks as there is an explicit place to perform these checks. Unfortunately, it also has considerable overhead. So we should remove it. To do that, we need to: 1. Remove f_state from the InterpreterFrame so we don't need to update it. 2 .Quicken automatically in the adaptive instructions. 3. Check the evalbreaker when resuming a frame in the interpreter. 4. Add some metadata to the code object, so that we know when to fire "call" events when tracing. -- assignee: Mark.Shannon messages: 415424 nosy: Mark.Shannon priority: normal severity: normal status: open title: Remove the RESUME instruction type: performance ___ Python tracker <https://bugs.python.org/issue47045> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46329] Split up the CALL_NO_KW and CALL_KW instructions.
Change by Mark Shannon : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue46329> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46329] Split up the CALL_NO_KW and CALL_KW instructions.
Change by Mark Shannon : -- pull_requests: +30025 pull_request: https://github.com/python/cpython/pull/31933 ___ Python tracker <https://bugs.python.org/issue46329> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45923] Improve performance of sys.settracing based tools.
Mark Shannon added the comment: New changeset 099f75614100e88ed90b68d20a51a8d9c22f81a7 by Mark Shannon in branch 'main': bpo-45923: Decouple suspension of tracing from tracing flag. (GH-31908) https://github.com/python/cpython/commit/099f75614100e88ed90b68d20a51a8d9c22f81a7 -- ___ Python tracker <https://bugs.python.org/issue45923> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46817] Add a line-start table to the code object.
Mark Shannon added the comment: sys.settrace line events cannot use the co_lines table. They need additional state, as we don't want to trace the same line twice (unless there is a backwards jump). Using the start of a entry in `co_lines` doesn't work when some entries have no line number. E.g. list(co.co_lines): (0, 2, 1) (2, 4, None) (4, 6, 1) The instruction @ byte offset 4 starts an entry for line 1, but does not start line 1. -- ___ Python tracker <https://bugs.python.org/issue46817> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46896] add support for watching writes to selected dictionaries
Mark Shannon added the comment: Let me give you an example. #module eggs eggs_var = 0 # a variable, maybe a counter or similar EGGS_CONST # a constant #module spam import eggs spam_var # Another variable def foo(): use(eggs.EGGS_CONST) - We will want to treat `eggs.EGGS_CONST` as a constant. To do that we need to be notified if `spam.eggs` or `eggs.EGGS_CONST` changes, but we do not want be notified whenever `spam.spam_var` or `eggs.eggs_var` changes. This might not be necessary for us right now, but we will want to implement optimizations over larger regions than a single bytecode in 3.12. -- ___ Python tracker <https://bugs.python.org/issue46896> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45923] Improve performance of sys.settracing based tools.
Change by Mark Shannon : -- pull_requests: +30001 pull_request: https://github.com/python/cpython/pull/31908 ___ Python tracker <https://bugs.python.org/issue45923> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Change by Mark Shannon : -- pull_requests: +29996 pull_request: https://github.com/python/cpython/pull/31901 ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46944] Use FASTCALL calling convention in generator.throw
Mark Shannon added the comment: New changeset 304197b3820309e3ed695ff3e6a71461881a1728 by Kumar Aditya in branch 'main': bpo-46944: use FASTCALL calling convention in generator.throw (GH-31723) https://github.com/python/cpython/commit/304197b3820309e3ed695ff3e6a71461881a1728 -- ___ Python tracker <https://bugs.python.org/issue46944> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46896] add support for watching writes to selected dictionaries
Mark Shannon added the comment: Another use of this is to add watch points in debuggers. To that end, it would better if the callback were a Python object. The overhead is relatively small if using the vectorcall protocol. If the call overhead matters that much, there is something wrong as way too many callbacks are happening. -- ___ Python tracker <https://bugs.python.org/issue46896> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46896] add support for watching writes to selected dictionaries
Mark Shannon added the comment: You might not like global variables, they may not show up much in benchmarks, but people do use them. I suspect a lot of jupyter notebooks have quite a few global variables. There should not be much of a slowdown for this code when watching `CONST`: CONST = ... # watched var = 0 for _ in range(LARGE_NUMBER): var += 1 CONST = ... # trigger event. -- ___ Python tracker <https://bugs.python.org/issue46896> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Change by Mark Shannon : -- pull_requests: +29915 pull_request: https://github.com/python/cpython/pull/31817 ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46896] add support for watching writes to selected dictionaries
Mark Shannon added the comment: There are three kinds of changes that we might want to watch (that I can think of right now): 1. Any change. Rather coarse and potentially expensive. Used by Cinder. 2. A new key being added (or a change to the keys version as a proxy). Useful for detect shadowing of builtins by module globals, would save the keys version check for the module dict in `LOAD_GLOBAL_BUILTINS` and a version check in some `LOAD_METHOD` specializations. 3. The value corresponding to a particular key. With this we could effectively convert both `LOAD_GLOBAL` specializations into a constant, given an effective way to de-optimize. One way to support the three cases above would be to replace the dict version with a pointer to a data structure describing what it watched. If the pointer is `NULL`, then nothing is being watched. The data structure would need 2 bits to cover cases 1 and 2, and 1 bit (or byte) for each key in the dict keys (or case 1 could be implemented by setting all the bits for case 3). -- ___ Python tracker <https://bugs.python.org/issue46896> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 5498a61c7c25db6f9e76032aa9c5153d79e09889 by Brandt Bucher in branch 'main': bpo-46841: Don't use an oparg counter for `STORE_SUBSCR` (GH-31742) https://github.com/python/cpython/commit/5498a61c7c25db6f9e76032aa9c5153d79e09889 -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46953] use FASTCALL for __import__ builtin
Mark Shannon added the comment: Serhiy, what is the advantage of __import__ being slower? Not counting the argument clinic generated code, the PR doesn't add any code and improves the docstring. -- ___ Python tracker <https://bugs.python.org/issue46953> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45317] Document the removal the usage of the C stack in Python to Python calls
Mark Shannon added the comment: I don't think this needs to block the alpha release -- priority: release blocker -> deferred blocker ___ Python tracker <https://bugs.python.org/issue45317> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46903] Crash when setting attribute with string subclass as the name (--with-pydebug)
Mark Shannon added the comment: Ronald, does PR 31658 fix your issue? -- stage: patch review -> ___ Python tracker <https://bugs.python.org/issue46903> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46389] 3.11: unused generator comprehensions cause f_lineno==None
Change by Mark Shannon : -- stage: resolved -> ___ Python tracker <https://bugs.python.org/issue46389> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46923] Implement stack overflow protection for supported platforms
New submission from Mark Shannon : https://github.com/python/steering-council/issues/102 (definitely not PEP 651 ;)) We should implement efficient stack checks on those platforms that allow us to introspect stack extents. Windows and posix systems allow us to do this. C allows addresses of stack variables to be taken. This means that C stacks cannot be moved. In theory they might be discontinuous, although I suspect that they are always contiguous. My plan is to maintain a per-thread "safe region" of 32or 64k. We can check if the current stack pointer (or near enough) is in that region cheaply. If we are not in that region, we can ask the O/S for a stack limit to determine a new "safe region". If we cannot find a safe region, then we raise a MemoryError. Personally I'd prefer a new exception `StackOverflow` to `MemoryError` but, thanks to stackoverflow.com, it is now impossible for new programmers to do a web search to determine what a "stack overflow" is. So, I guess MemoryError will have to do. -- assignee: Mark.Shannon messages: 414538 nosy: Mark.Shannon, gregory.p.smith priority: normal severity: normal status: open title: Implement stack overflow protection for supported platforms ___ Python tracker <https://bugs.python.org/issue46923> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46896] add support for watching writes to selected dictionaries
Mark Shannon added the comment: Why so coarse? Getting a notification for every change of a global in module, is likely to make use the use of global variables extremely expensive. ``` var = 0 CONST = 1 def foo(...): ... ``` I may well want to be notified if `foo` or `CONST` gets modified, but performance could suffer badly if we make a callback every time `var` is changed. -- What happens if a watched dictionary is modified in a callback? -- How do you plan to implement this? Steal a bit from `ma_version_tag` or replace `ma_version_tag`? If you replace `ma_version_tag` this could actually speed things up a tad. You'd probably need a PEP to replace PEP 509, but I think this may need a PEP anyway. -- ___ Python tracker <https://bugs.python.org/issue46896> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46311] Clean up PyLong_FromLong and PyLong_FromLongLong
Change by Mark Shannon : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue46311> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 586b24d3be1aec5d2568b070a249b4d75e608782 by Brandt Bucher in branch 'main': bpo-46841: Fix error message hacks in `GET_AWAITABLE` (GH-31664) https://github.com/python/cpython/commit/586b24d3be1aec5d2568b070a249b4d75e608782 -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46781] Tracing: c_return doesn't report the result
Mark Shannon added the comment: This is an API change. I agree that the API is not what it should be, but we can't change it without breaking an unknown amount of 3rd party code that uses it. -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue46781> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46911] Early tracing has lineno=None for modules
Mark Shannon added the comment: This is a bit of a tricky one. The problem is that the line number for an instruction is used for two purposes. 1. To calculate the line number in frame.f_lineno for tracebacks and events 2. By dis to determine which lines are present and where they start. If we set the lineno for the initial RESUME instruction in a module, we break dis and coverage for modules that do not have code on line 1. If we add an explicit line-start table, we would be able to fix this, as the RESUME would have a line number for case 1, but wouldn't start a line, thus not breaking dis. An explicit line-start table has other advantages, so we probably will implement it, but maybe not until 3.12. Ned, Would it make sense in coverage.py to ignore "call" events when doing coverage, and only use "line" events? All the traces in your example are from "call" events. -- ___ Python tracker <https://bugs.python.org/issue46911> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46903] Crash when setting attribute with string subclass as the name (--with-pydebug)
Mark Shannon added the comment: New changeset 03c2a36b2bd2d4469160d1607619ee144175d753 by Mark Shannon in branch 'main': bpo-46903: Handle str-subclasses in virtual instance dictionaries. (GH-31658) https://github.com/python/cpython/commit/03c2a36b2bd2d4469160d1607619ee144175d753 -- ___ Python tracker <https://bugs.python.org/issue46903> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46908] Debugger jumps to a wrong instruction in for loop
Mark Shannon added the comment: Which debugger? Which version of Python? Please provide all the steps required to reproduce, otherwise there is little we can do. -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue46908> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46389] 3.11: unused generator comprehensions cause f_lineno==None
Change by Mark Shannon : -- resolution: -> fixed stage: -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue46389> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46845] dict: Use smaller entry for Unicode-key only dict.
Change by Mark Shannon : -- pull_requests: +29777 pull_request: https://github.com/python/cpython/pull/31659 ___ Python tracker <https://bugs.python.org/issue46845> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46675] Allow more than 16 items in split-keys dicts and "virtual" object dicts.
Change by Mark Shannon : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue46675> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46903] Crash when setting attribute with string subclass as the name (--with-pydebug)
Change by Mark Shannon : -- keywords: +patch pull_requests: +29776 stage: -> patch review pull_request: https://github.com/python/cpython/pull/31658 ___ Python tracker <https://bugs.python.org/issue46903> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46389] 3.11: unused generator comprehensions cause f_lineno==None
Mark Shannon added the comment: Ned, is this fixed for you now? -- ___ Python tracker <https://bugs.python.org/issue46389> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46891] Crash in ModuleType subclass with __slots__
Change by Mark Shannon : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue46891> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46891] Crash in ModuleType subclass with __slots__
Mark Shannon added the comment: New changeset 751c9ed801ad1189272ca10f0749bfc9d49b5038 by Mark Shannon in branch 'main': bpo-46891: Fix creating a new instance of a module subclass with slots (GH-31643) https://github.com/python/cpython/commit/751c9ed801ad1189272ca10f0749bfc9d49b5038 -- ___ Python tracker <https://bugs.python.org/issue46891> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: It's not an UNPACK_SEQUENCE slowdown, it's a silly benchmark ;) https://github.com/python/pyperformance/blob/main/pyperformance/data-files/benchmarks/bm_unpack_sequence/run_benchmark.py#L6 What I *think* is happening is that the inline cache takes the size of the function (in code units) from about 4800 to about 5200, crossing our threshold for quickening (currently set to 5000). When we quicken in-place, there will be no need for a threshold and this issue will disappear. We should probably up the threshold for now, just to keep the charts looking good. -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: Good to know, although "deferred blocker" is somewhat vague about when it is deferred until. OOI, does it become a "blocker" again once you've done the alpha release, or what stops it being deferred past the beta or even the final release? -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46891] Crash in ModuleType subclass with __slots__
Change by Mark Shannon : -- keywords: +patch pull_requests: +29763 stage: needs patch -> patch review pull_request: https://github.com/python/cpython/pull/31643 ___ Python tracker <https://bugs.python.org/issue46891> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46891] Crash in ModuleType subclass with __slots__
Mark Shannon added the comment: Dennis, thanks for bisecting this. -- ___ Python tracker <https://bugs.python.org/issue46891> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46891] Crash in ModuleType subclass with __slots__
Change by Mark Shannon : -- assignee: -> Mark.Shannon ___ Python tracker <https://bugs.python.org/issue46891> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: We should be done with this by early next week, if you can wait. -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: Is there some way to mark something as not blocking an alpha release, but blocking a beta release? Everything is working at the moment, but not so efficiently. -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue40421] [C API] Add getter functions for PyFrameObject and maybe move PyFrameObject to the internal C API
Mark Shannon added the comment: I've outlined the requirements for a frame stack API at https://github.com/faster-cpython/ideas/issues/309. The problem with adding an API for PyFrameObject (beyond simple getters) is that it makes assumptions about the frame stack that aren't valid. A stack of frames is not just a linked list of frames. It never was, and it certainly isn't now. -- ___ Python tracker <https://bugs.python.org/issue40421> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 3b0f1c5a710eff289dc44bec972dbaea353cc54f by Mark Shannon in branch 'main': bpo-46841: Use inline cache for `BINARY_SUBSCR`. (GH-31618) https://github.com/python/cpython/commit/3b0f1c5a710eff289dc44bec972dbaea353cc54f -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46311] Clean up PyLong_FromLong and PyLong_FromLongLong
Mark Shannon added the comment: New changeset c60e6b6ad7aaf9c72035ff9fb1575e2710aeb4b4 by Mark Dickinson in branch 'main': bpo-46311: Clean up PyLong_FromLong and PyLong_FromLongLong (GH-30496) https://github.com/python/cpython/commit/c60e6b6ad7aaf9c72035ff9fb1575e2710aeb4b4 -- ___ Python tracker <https://bugs.python.org/issue46311> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 7820a5897e7762df23bff1cbe749652130654a08 by Brandt Bucher in branch 'main': bpo-46841: Use inline caching for `COMPARE_OP` (GH-31622) https://github.com/python/cpython/commit/7820a5897e7762df23bff1cbe749652130654a08 -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Change by Mark Shannon : -- pull_requests: +29743 pull_request: https://github.com/python/cpython/pull/31618 ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 4558af5a8f8e56a9b0dc11f6e834c47e0fd05f9e by Mark Shannon in branch 'main': bpo-46841: Move the cache for `LOAD_GLOBAL` inline. (GH-31575) https://github.com/python/cpython/commit/4558af5a8f8e56a9b0dc11f6e834c47e0fd05f9e -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 424ecab494d538650ba34937cdd710094ccb2275 by Brandt Bucher in branch 'main': bpo-46841: Use inline caching for `UNPACK_SEQUENCE` (GH-31591) https://github.com/python/cpython/commit/424ecab494d538650ba34937cdd710094ccb2275 -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Change by Mark Shannon : -- pull_requests: +29697 pull_request: https://github.com/python/cpython/pull/31575 ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46808] remove NEXT_BLOCK() from compile.c
Mark Shannon added the comment: New changeset c579243eb62d3182c84004cd72dcf6ef59100643 by Irit Katriel in branch 'main': bpo-46808: remove NEXT_BLOCK() from compile.c (GH-31448) https://github.com/python/cpython/commit/c579243eb62d3182c84004cd72dcf6ef59100643 -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue46808> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Change by Mark Shannon : -- priority: normal -> release blocker ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: Making this a release blocker, as we really cannot leave this half finished for the release. Shouldn't be a problem, as we'll have it done in a week or so. -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: New changeset 0f41aac109c45aa468c432f798947c54d4178b3d by Brandt Bucher in branch 'main': bpo-46841: Use *inline* caching for `BINARY_OP` (GH-31543) https://github.com/python/cpython/commit/0f41aac109c45aa468c432f798947c54d4178b3d -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46389] 3.11: unused generator comprehensions cause f_lineno==None
Mark Shannon added the comment: Stefan, f_lineno can be None for some opcodes, but there shouldn't be trace events if it is. E.g. >>> def f(): ... try: ... 1/0 ... finally: ... pass ... >>> list(f.__code__.co_lines()) [(0, 2, 1), (2, 4, 2), (4, 12, 3), (12, 16, 5), (16, 18, None), (18, 26, 5)] Note that the bytecode at offset 16 has no line number, but there should be no events for it. BUT, before you try and fix your tracing emulation, I repeat my plea. Please stop trying to mimic CPython internals, and ask for the APIs that you need. -- ___ Python tracker <https://bugs.python.org/issue46389> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45107] Improve LOAD_METHOD specialization
Mark Shannon added the comment: New changeset 2a6ece572ca38f989fca66f4c053cb16550bccd4 by Mark Shannon in branch 'main': bpo-45107: Specialize `LOAD_METHOD` for instances with dict. (GH-31531) https://github.com/python/cpython/commit/2a6ece572ca38f989fca66f4c053cb16550bccd4 -- ___ Python tracker <https://bugs.python.org/issue45107> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46823] Add LOAD_FAST__LOAD_ATTR_INSTACE_VALUE combined opcode
Mark Shannon added the comment: New changeset a52d2528a405c1e2bfeb6470cb3313a5338dc45f by Dennis Sweeney in branch 'main': bpo-46823: Implement LOAD_FAST__LOAD_ATTR_INSTANCE_VALUE superinstruction (GH-31484) https://github.com/python/cpython/commit/a52d2528a405c1e2bfeb6470cb3313a5338dc45f -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue46823> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Change by Mark Shannon : -- pull_requests: +29673 pull_request: https://github.com/python/cpython/pull/31552 ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46841] Inline bytecode caches
Mark Shannon added the comment: We need to decide what to do about dis. I don't think we should have a `show_cache` option, as the caches are meaningless junk without quickening (maybe we should drop the CACHE opcode, and just use zeroes). Instead we should have a `show_quickened` option, to show the quickened form, which we need to make clear is very much implementation defined. E.g. Cinder might show the machine code as well. That way, we can present the cache information as extra data on the quickened form, rather than junk instructions. -- ___ Python tracker <https://bugs.python.org/issue46841> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45107] Improve LOAD_METHOD specialization
Change by Mark Shannon : -- nosy: +Mark.Shannon nosy_count: 1.0 -> 2.0 pull_requests: +29655 pull_request: https://github.com/python/cpython/pull/31531 ___ Python tracker <https://bugs.python.org/issue45107> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue45885] Specialize COMPARE_OP
Mark Shannon added the comment: New changeset 375a56bd4015596c0cf44129c8842a1fe7199785 by Brandt Bucher in branch 'main': bpo-45885: Don't un-adapt `COMPARE_OP` when collecting stats (GH-31516) https://github.com/python/cpython/commit/375a56bd4015596c0cf44129c8842a1fe7199785 -- ___ Python tracker <https://bugs.python.org/issue45885> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46329] Split up the CALL_NO_KW and CALL_KW instructions.
Mark Shannon added the comment: New changeset 424023efee5b21567b4725015ef143b627112e3c by Brandt Bucher in branch 'main': bpo-46329: Fix test failure when `Py_STATS` is enabled (GH-31511) https://github.com/python/cpython/commit/424023efee5b21567b4725015ef143b627112e3c -- ___ Python tracker <https://bugs.python.org/issue46329> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46329] Split up the CALL_NO_KW and CALL_KW instructions.
Change by Mark Shannon : -- pull_requests: +29626 pull_request: https://github.com/python/cpython/pull/31496 ___ Python tracker <https://bugs.python.org/issue46329> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46329] Split up the CALL_NO_KW and CALL_KW instructions.
Mark Shannon added the comment: New changeset 59585d6b2ea50d7bc3a9b336da5bde61367f527c by Mark Shannon in branch 'main': bpo-46329: Streamline calling sequence a bit. (GH-31465) https://github.com/python/cpython/commit/59585d6b2ea50d7bc3a9b336da5bde61367f527c -- ___ Python tracker <https://bugs.python.org/issue46329> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46817] Add a line-start table to the code object.
New submission from Mark Shannon : Computing whether an instruction is the first on a line (for tracing) in the interpreter is complicated and slow. Doing it in the compiler should be simpler and has no runtime cost. Currently we decide if the current instruction is the first on a line, by using the `co_lines` table, but if the previous instruction executed was a jump from the same line over a block of instructions with different line number(s) then we can get this wrong. This doesn't seem to a problem now, but could be with either: Specialization of FOR_ITER inlining generators, or Compiler improvements leading to different code layout. The table is only one bit per instruction, so shouldn't be a problem in terms of space. -- components: Interpreter Core messages: 413651 nosy: Mark.Shannon, iritkatriel priority: normal severity: normal status: open title: Add a line-start table to the code object. type: behavior versions: Python 3.11 ___ Python tracker <https://bugs.python.org/issue46817> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46329] Split up the CALL_NO_KW and CALL_KW instructions.
Change by Mark Shannon : -- pull_requests: +29595 pull_request: https://github.com/python/cpython/pull/31465 ___ Python tracker <https://bugs.python.org/issue46329> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46329] Split up the CALL_NO_KW and CALL_KW instructions.
Mark Shannon added the comment: New changeset cf345e945f48f54785799390c2e92c5310847bd4 by Mark Shannon in branch 'main': bpo-46329: Change calling sequence (again) (GH-31373) https://github.com/python/cpython/commit/cf345e945f48f54785799390c2e92c5310847bd4 -- ___ Python tracker <https://bugs.python.org/issue46329> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46709] test_urllib: testInterruptCaught() has a race condition and fails randomly
Mark Shannon added the comment: New changeset e2c28616ce6c3cdb1013c415125220a0b86b86a1 by Nikita Sobolev in branch 'main': bpo-46709: check eval breaker in specialized `CALL` opcodes (GH-31404) https://github.com/python/cpython/commit/e2c28616ce6c3cdb1013c415125220a0b86b86a1 -- nosy: +Mark.Shannon ___ Python tracker <https://bugs.python.org/issue46709> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46724] Odd Bytecode Generation in 3.10
Mark Shannon added the comment: New changeset c3ce7781e3afe6f2dec5eef8e87fd5a664519ae9 by Saul Shanabrook in branch 'main': bpo-46724: Fix dis support for overflow args (GH-31285) https://github.com/python/cpython/commit/c3ce7781e3afe6f2dec5eef8e87fd5a664519ae9 -- ___ Python tracker <https://bugs.python.org/issue46724> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue46760] test_dis should test the dis module, not everything else
Change by Mark Shannon : -- nosy: +brandtbucher, iritkatriel ___ Python tracker <https://bugs.python.org/issue46760> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
