Function kernel::process::process::sleep

pub fn sleep<T, U>(channel: *const T, lck: MutexGuard<U>) -> MutexGuard<U>

put this process into sleep state

channel is an identifier of sleep lock channel. wakeup should be called with the same channel to properly wakeup previously slept process.

lck is the spinlock to be temporarily unlocked.

Returns the lck spinlock.

Technical Details

To avoid the lost wakeup issue, process must hold a global lock PROCS_POOL_SLEEP. This lock will be dropped after the process is put back into process pool.