Tracking issue for hint::spin_loop (renamed sync::atomic::spin_loop_hint) #55002

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1. Havvy

   added

   T-libs-api[DEPRECATED; DO NOT USE][DEPRECATED; DO NOT USE]

   on Oct 12, 2018
2. clarfonthey

   changed the title [-]std::sync::atomic::spin_loop_hint should be in std::hint[/-] [+]Tracking issue for hint::spin_loop (renamed sync::atomic::spin_loop_hint)[/+] on Jan 15, 2019
3. KodrAus

   added

   C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

   on Jan 16, 2019
4. Centril

   added 3 commits that reference this issue on Jan 17, 2019

   Rollup merge of rust-lang#56996 - clarcharr:spin_loop_hint, r=KodrAus

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   05c9aa1

   Rollup merge of rust-lang#56996 - clarcharr:spin_loop_hint, r=KodrAus

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   f40eb56

   Rollup merge of rust-lang#56996 - clarcharr:spin_loop_hint, r=KodrAus

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   621b0dd
5. bors

   added a commit that references this issue on Jan 18, 2019

   Auto merge of #56996 - clarcharr:spin_loop_hint, r=KodrAus

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   38650b6
6. gnzlbg commented on Mar 16, 2019

   

   gnzlbg

   on Mar 16, 2019

   Last edited by gnzlbg

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   spin_loop currently invokes undefined behavior on x86 and x86_64 targets without SSE2. One of those targets is tier-1: i686-apple-darwin.
7. hanna-kruppe commented on Mar 16, 2019

   

   hanna-kruppe

   on Mar 16, 2019

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   Are you sure? The target spec for that sets the cpu to Yonah, which has SSE2.
8. gnzlbg commented on Mar 16, 2019

   

   gnzlbg

   on Mar 16, 2019

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   @rkruppe if that was fixed we should close: #53423
9. gnzlbg commented on Mar 16, 2019

   

   gnzlbg

   on Mar 16, 2019

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   @rkruppe indeed, that's fixed, I've closed that issue.
10. clarfonthey commented on Mar 20, 2019

    

    clarfonthey

    on Mar 20, 2019

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    Note that this isn't a tracking issue for the function itself; it's already stable and any bugs/qualms are reported separately. This is just for the renaming of it.
11. zopsicle commented on Oct 21, 2019

    

    zopsicle

    on Oct 21, 2019

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    If this routine is moved to std::hint then the documentation of std::hint should be updated as well. It currently reads:

    Hints to compiler that affects how code should be emitted or optimized.

    Pause instruction is a hint to the CPU, not to the compiler.

    👍React with 👍1Reacted by Clar Fon
12. clarfonthey commented on Oct 22, 2019

    

    clarfonthey

    on Oct 22, 2019

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    I agree; it should be changed to "compiler and/or CPU".
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14. m-ou-se

    added a commit that references this issue on Jan 14, 2021

    Rollup merge of rust-lang#80966 - KodrAus:deprecate/spin_loop_hint, r…

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    7855a73
15. KodrAus commented on Jan 15, 2021

    

    KodrAus

    on Jan 15, 2021

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    Now that atomic::spin_loop_hint is deprecated I'll go ahead and close this tracking issue.
16. KodrAus

    closed this as completedon Jan 15, 2021
17. ISeekTruth

    added a commit that references this issue on Jul 7, 2021

    Fix spin_loop error

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    15a0bfe
18. christopherjreid

    added a commit that references this issue on Nov 15, 2021

    Update Rust in Dockerfile to 1.49.0

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    8168800
19. esteve

    added a commit that references this issue on Nov 22, 2021

    Fix missing Dockerfile ARG, Update Rust to 1.49.0 (#67)

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    77ae3c1
20. ebkalderon

    added 2 commits that reference this issue on Feb 11, 2022

    Change minimum Rust version to 1.49.0

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    29379e6

    Change minimum Rust version to 1.49.0

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    30f0480
21. stmpjmpr

    added 3 commits that reference this issue on Feb 25, 2022

    Bumping minimum version to Rust 1.49.0 due to:

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    05f5116

    Bumping minimum version to Rust 1.49.0 due to:

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    984acbb

    Fix travis build (#65)

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    ef8379e
22. nars1

    added a commit that references this issue on Feb 25, 2022

    [YDBDoc#279] Fix Rust Version in Debian Image (& misc changes)

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    1607247
23. clarfonthey

    added

    I-libs-radarLibs issues that are tracked on the team's radar.Libs issues that are tracked on the team's radar.

    and removed

    I-libs-radarLibs issues that are tracked on the team's radar.Libs issues that are tracked on the team's radar.

    on Oct 22, 2026
24. seanchatmangpt

    added a commit that references this issue on Nov 4, 2026

    Change minimum Rust version to 1.49.0

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    57c8684