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improve tracing performance with f_trace set to Py_None #71405

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xdegaye mannequin opened this issue Jun 4, 2016 · 1 comment
Open

improve tracing performance with f_trace set to Py_None #71405

xdegaye mannequin opened this issue Jun 4, 2016 · 1 comment
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stdlib Python modules in the Lib dir type-feature A feature request or enhancement

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@xdegaye
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Mannequin

xdegaye mannequin commented Jun 4, 2016

BPO 27218
Nosy @birkenfeld, @xdegaye, @serhiy-storchaka
PRs
  • bpo-27218 : improve tracing performance with f_trace set to Py_None #16157
    		•

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    GitHub fields:

    assignee = None
closed_at = None
created_at = <Date 2016-06-04.16:27:47.484>
labels = ['type-feature', 'library']
title = 'improve tracing performance with f_trace set to Py_None'
updated_at = <Date 2019-09-15.13:23:40.914>
user = 'https://github.com/xdegaye'

    bugs.python.org fields:

    activity = <Date 2019-09-15.13:23:40.914>
actor = 'nanjekyejoannah'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2016-06-04.16:27:47.484>
creator = 'xdegaye'
dependencies = []
files = []
hgrepos = []
issue_num = 27218
keywords = ['patch']
message_count = 1.0
messages = ['267262']
nosy_count = 3.0
nosy_names = ['georg.brandl', 'xdegaye', 'serhiy.storchaka']
pr_nums = ['16157']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue27218'
versions = ['Python 3.6']
    @xdegaye
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    xdegaye mannequin commented Jun 4, 2016

    When a trace function set by sys.settrace() returns None, tracing of the current scope should stop, but this feature is not implemented (bpo-11992).
    Currently f_trace is never set to Py_None. Setting f_trace to Py_None in trace_trampoline() when the trace function returns Py_None provides a way to avoid the costly calls to maybe_call_line_trace() that are made for each line in this scope even though the trace function is not called. This idea was initiated in bpo-20041.

    @xdegaye xdegaye mannequin added stdlib Python modules in the Lib dir type-feature A feature request or enhancement labels Jun 4, 2016
    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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