std.Thread: ResetEvent improvements (#11523)

* std: start removing redundant ResetEvents

* src: fix other uses of std.Thread.ResetEvent

* src: add builtin.sanitize_thread for tsan detection

* atomic: add Atomic.fence for proper fencing with tsan

* Thread: remove the other ResetEvent's and rewrite the current one

* Thread: ResetEvent docs

* zig fmt + WaitGroup.reset() fix

* src: fix build issues for ResetEvent + tsan

* Thread: ResetEvent tests

* Thread: ResetEvent module doc

* Atomic: replace llvm *p memory constraint with *m

* panicking: handle spurious wakeups in futex.wait() when waiting for abort()

* zig fmt

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/std/Thread/Futex.zig b/lib/std/Thread/Futex.zig
index 33eb30ba9d..bbe6b813ba 100644
--- a/lib/std/Thread/Futex.zig
+++ b/lib/std/Thread/Futex.zig
@@ -809,7 +809,7 @@ const PosixImpl = struct {
         //
         // The pending count increment in wait() must also now use SeqCst for the update + this pending load
         // to be in the same modification order as our load isn't using Release/Acquire to guarantee it.
-        std.atomic.fence(.SeqCst);
+        bucket.pending.fence(.SeqCst);
         if (bucket.pending.load(.Monotonic) == 0) {
             return;
         }