Module swiss_army_knife::hardware_optimized_spin_lock

Spin lock.

An Intel hardware-optimized spin lock that uses Hardware Lock Elision (HLE) and a non-CAS based spin lock (an OR lock) as a fast fallback. The intel spin lock, HardwareLockElisionSpinLock, is only available on a x86_64 targets. To pick the best spin lock for the compilation target, use the type alias BestForCompilationTargetSpinLock.

Structs

AtomicBoolSpinLock

An efficient, CAS-free unfair spin lock that uses an atomic fetch OR and only requires one byte of memory.

IntelHardwareOptimizedLockSpinLock

An efficient, CAS-free unfair spin lock that uses an atomic exchange and only requires one byte of memory.

Traits

SpinLock

A spin-lock API.

Functions

busy_wait_spin_loop_hint

On x86_64, issues a REP NOP which cause the CPU to potentially yield to another HyperThread.

Type Definitions

BestForCompilationTargetSpinLock

The best spin lock for the compilation target.