mutex

Mutex and Condition Variable

Constants

FUTEX_WAIT = 0

FUTEX_WAKE = 1

Function	Description
`_mtx_futex_wait`	Internal: futex syscall wrapper.
`_mtx_futex_wake`
`mutex_new`	Create new mutex (unlocked).
`mutex_lock`	Lock mutex. Blocks if already locked.
`mutex_unlock`	Unlock mutex.
`mutex_trylock`	Non-blocking try-lock. Returns 1 if acquired, 0 if not.
`condvar_new`	Create condition variable.
`condvar_wait`	Wait on condition variable. Must hold mutex m. Releases mutex, waits, re-acqu…
`condvar_signal`	Wake one waiter.
`condvar_broadcast`	Wake all waiters.
`spinlock_new`	Create simple spinlock.
`spinlock_lock`	Spinlock: busy-wait until acquired.
`spinlock_unlock`	Spinlock: release.

fn _mtx_futex_wait(addr: &i64, expected: i64) -> i64

Internal: futex syscall wrapper.

fn _mtx_futex_wake(addr: &i64, count: i64) -> i64

fn mutex_new() -> &i64

Create new mutex (unlocked).

fn mutex_lock(m: &i64)

Lock mutex. Blocks if already locked.

fn mutex_unlock(m: &i64)

Unlock mutex.

fn mutex_trylock(m: &i64) -> i64

Non-blocking try-lock. Returns 1 if acquired, 0 if not.

fn condvar_new() -> &i64

Create condition variable.

fn condvar_wait(cv: &i64, m: &i64)

Wait on condition variable. Must hold mutex m. Releases mutex, waits, re-acquires mutex on return.

fn condvar_signal(cv: &i64)

Wake one waiter.

fn condvar_broadcast(cv: &i64)

Wake all waiters.

fn spinlock_new() -> &i64

Create simple spinlock.

fn spinlock_lock(sl: &i64)

Spinlock: busy-wait until acquired.

fn spinlock_unlock(sl: &i64)

Spinlock: release.