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| author | bors <bors@rust-lang.org> | 2024-10-24 13:35:50 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2024-10-24 13:35:50 +0000 |
| commit | f61306d47bc98af8bb9d15f1adf6086785590a8c (patch) | |
| tree | 0500da4d67b3ec4f77a8cb011074779c5c0315fb /library/std/src/lib.rs | |
| parent | 5ae4d75effa366176dd75cd0d5662da26385cfc5 (diff) | |
| parent | 0747f2898e83df7e601189c0f31762e84328becb (diff) | |
| download | rust-f61306d47bc98af8bb9d15f1adf6086785590a8c.tar.gz rust-f61306d47bc98af8bb9d15f1adf6086785590a8c.zip | |
Auto merge of #123550 - GnomedDev:remove-initial-arc, r=Noratrieb
Remove the `Arc` rt::init allocation for thread info Removes an allocation pre-main by just not storing anything in std::thread::Thread for the main thread. - The thread name can just be a hard coded literal, as was done in #123433. - Storing ThreadId and Parker in a static that is initialized once at startup. This uses SyncUnsafeCell and MaybeUninit as this is quite performance critical and we don't need synchronization or to store a tag value and possibly leave in a panic.
Diffstat (limited to 'library/std/src/lib.rs')
| -rw-r--r-- | library/std/src/lib.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs index 8c1a3c76829..1de52eb7b21 100644 --- a/library/std/src/lib.rs +++ b/library/std/src/lib.rs @@ -364,6 +364,7 @@ #![feature(std_internals)] #![feature(str_internals)] #![feature(strict_provenance_atomic_ptr)] +#![feature(sync_unsafe_cell)] #![feature(ub_checks)] // tidy-alphabetical-end // |