Statically-initializable mutex that spins instead of blocking.
Declared in <bsls_spinlock.h>
struct SpinLock;A statically-initializable synchronization primitive that "spins" (i.e., executes user instructions in a tight loop) rather than blocking waiting threads using system calls. The following idiom is used to initialize SpinLock variables: ` SpinLock lock = BSLS_SPINLOCK_UNLOCKED; ` A class member d_lock of type SpinLock may be initialized using the following idiom: ` , d_lock(SpinLock::s_unlocked) `
| Name | Description |
|---|---|
SpinLock [constructor] | Constructors |
lock | Spin (repeat a loop continuously without using the system to pause or reschedule the thread) until this object is unlocked, then atomically acquire the lock. |
lockWithBackoff | Acquire the lock, spinning with backoff until it is free. |
lockWithoutBackoff | Acquire the lock by spinning without backoff until it is free. |
tryLock | Attempt to acquire the lock, retrying up to numRetries times. |
unlock | Release the lock. The behavior is undefined unless the current thread holds the lock. |
| Name | Description |
|---|---|
s_unlocked | Initializer for an unlocked spin lock. |