miri::shims::unix::macos::sync

Struct MacOsFutex

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struct MacOsFutex {
    futex: FutexRef,
    size: Cell<u64>,
    shared: Cell<bool>,
}
Expand description

Metadata for a macOS futex.

Since macOS 11.0, Apple has exposed the previously private futex API consisting of os_sync_wait_on_address (and friends) and os_sync_wake_by_address_{any, all}. These work with different value sizes and flags, which are validated to be consistent. This structure keeps track of both the futex queue and these values.

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§futex: FutexRef§size: Cell<u64>

The size in bytes of the atomic primitive underlying this futex.

§shared: Cell<bool>

Whether the futex is shared across process boundaries.

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Size: 24 bytes