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* [Bug libstdc++/98034] New: std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined
@ 2020-11-27 13:48 redi at gcc dot gnu.org
2020-11-27 13:49 ` [Bug libstdc++/98034] " redi at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2020-11-27 13:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98034
Bug ID: 98034
Summary: std::atomic_signed_lock_free and
std::atomic_unsigned_lock_free not defined
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
CC: rodgertq at gcc dot gnu.org
Target Milestone: ---
C++20 adds these typedefs.
For linux they should be atomic<int> and atomic<unsigned>, because they can use
futex for waiting and notifying. I don't know about other targets.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98034] std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined
2020-11-27 13:48 [Bug libstdc++/98034] New: std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined redi at gcc dot gnu.org
@ 2020-11-27 13:49 ` redi at gcc dot gnu.org
2020-11-30 19:27 ` rodgertq at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2020-11-27 13:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98034
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Also, we should probably be using a futex directly for unsigned, and for other
types with the same size and alignment as int (e.g. long on ilp32 targets).
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98034] std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined
2020-11-27 13:48 [Bug libstdc++/98034] New: std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined redi at gcc dot gnu.org
2020-11-27 13:49 ` [Bug libstdc++/98034] " redi at gcc dot gnu.org
@ 2020-11-30 19:27 ` rodgertq at gcc dot gnu.org
2021-02-01 16:01 ` redi at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rodgertq at gcc dot gnu.org @ 2020-11-30 19:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98034
Thomas Rodgers <rodgertq at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-11-30
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98034] std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined
2020-11-27 13:48 [Bug libstdc++/98034] New: std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined redi at gcc dot gnu.org
2020-11-27 13:49 ` [Bug libstdc++/98034] " redi at gcc dot gnu.org
2020-11-30 19:27 ` rodgertq at gcc dot gnu.org
@ 2021-02-01 16:01 ` redi at gcc dot gnu.org
2022-12-12 14:00 ` cvs-commit at gcc dot gnu.org
2022-12-12 14:04 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2021-02-01 16:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98034
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #0)
> C++20 adds these typedefs.
And the __cpp_lib_atomic_lock_free_type_aliases feature test macro.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98034] std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined
2020-11-27 13:48 [Bug libstdc++/98034] New: std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined redi at gcc dot gnu.org
` (2 preceding siblings ...)
2021-02-01 16:01 ` redi at gcc dot gnu.org
@ 2022-12-12 14:00 ` cvs-commit at gcc dot gnu.org
2022-12-12 14:04 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-12-12 14:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98034
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:
https://gcc.gnu.org/g:320ac807da125e6dc952b3d4abf02daeead88d44
commit r13-4612-g320ac807da125e6dc952b3d4abf02daeead88d44
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Mon Dec 12 12:49:40 2022 +0000
libstdc++: Define atomic lock-free type aliases for C++20 [PR98034]
libstdc++-v3/ChangeLog:
PR libstdc++/98034
* include/std/atomic (__cpp_lib_atomic_lock_free_type_aliases):
Define macro.
(atomic_signed_lock_free, atomic_unsigned_lock_free): Define
aliases.
* include/std/version (__cpp_lib_atomic_lock_free_type_aliases):
Define macro.
* testsuite/29_atomics/atomic/lock_free_aliases.cc: New test.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98034] std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined
2020-11-27 13:48 [Bug libstdc++/98034] New: std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined redi at gcc dot gnu.org
` (3 preceding siblings ...)
2022-12-12 14:00 ` cvs-commit at gcc dot gnu.org
@ 2022-12-12 14:04 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2022-12-12 14:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98034
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Implemented for GCC 13
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-12-12 14:04 UTC | newest]
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2020-11-27 13:48 [Bug libstdc++/98034] New: std::atomic_signed_lock_free and std::atomic_unsigned_lock_free not defined redi at gcc dot gnu.org
2020-11-27 13:49 ` [Bug libstdc++/98034] " redi at gcc dot gnu.org
2020-11-30 19:27 ` rodgertq at gcc dot gnu.org
2021-02-01 16:01 ` redi at gcc dot gnu.org
2022-12-12 14:00 ` cvs-commit at gcc dot gnu.org
2022-12-12 14:04 ` redi at gcc dot gnu.org
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