Victor Stinner blog 3

Thanks to my latest change on time.perf_counter(), all Python 3.7 clocks now use nanoseconds as integer internally. It became possible to propose again my old idea of getting time as nanoseconds at Python level and so I wrote a new PEP 564 "Add new time functions with nanosecond …

Since 2012, I have been trying to convert all Python clocks to use internally nanoseconds. The last clock which still used floating point internally was time.perf_counter(). INADA Naoki's new importtime tool was an opportunity for me to have a new look on a tricky integer overflow issue.

My contributions to CPython during 2017 Q3 (july, august, september), Part 3 (funny bugs).

Previous report: My contributions to CPython during 2017 Q3: Part 2 (dangling threads).

Summary:

• FreeBSD bug: minor() device regression
• regrtest snowball effect when hunting memory leaks
• Bugfixes
• Other Changes

FreeBSD bug: minor() device regression

bpo-31044: The …

My contributions to CPython during 2017 Q3 (july, august, september), Part 2: "Dangling threads".

Previous report: My contributions to CPython during 2017 Q3: Part 1.

Next reports:

• My contributions to CPython during 2017 Q3: Part 3 (funny bugs).

Summary:

• Bugfixes: Reference cycles
• socketserver leaking threads and processes
  • test_logging random bug …

My contributions to CPython during 2017 Q3 (july, august, september), Part 1.

Previous report: My contributions to CPython during 2017 Q2 (part1).

Next reports:

• My contributions to CPython during 2017 Q3: Part 2 (dangling threads).
• My contributions to CPython during 2017 Q3: Part 3 (funny bugs).

Summary:

• Statistics
• Security fixes …

I am working on the Python security for years, but I never wrote anything about that. Let's fix this!

I am currently at a CPython sprint 2017 at Facebook. We are discussing my idea of writing a new C API for CPython hiding implementation details and replacing macros with function calls.

This article tries to explain why the CPython C API needs to evolve.

This is the third part of my contributions to CPython during 2017 Q2 (april, may, june):

• Security
• Trick bug: Clang 4.0, dtoa and strict aliasing
• sigwaitinfo() race condition in test_eintr
• FreeBSD test_subprocess core dump

Previous reports:

• My contributions to CPython during 2017 Q2 (part 1).
• My contributions to CPython …

This is the second part of my contributions to CPython during 2017 Q2 (april, may, june):

• Mentoring
• Reference and memory leaks
• Contributions
• Enhancements
• Bugfixes
• Stars of the CPython GitHub project

Previous report: My contributions to CPython during 2017 Q2 (part 1).

Next report: My contributions to CPython during 2017 Q2 …

This is the first part of my contributions to CPython during 2017 Q2 (april, may, june):

• Statistics
• Buidbots and test.bisect
• Python 3.6.0 regression
• struct.Struct.format type
• Optimization: one less syscall per open() call
• make regen-all

Previous report: My contributions to CPython during 2017 Q1.

Next reports …