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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] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 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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