waitq Struct Reference
[Synchronization]

Public Member Functions
	SPINLOCK_DECLARE (lock)
Data Fields
int	missed_wakeups
link_t	head

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Detailed Description

Wait queue structure.

Definition at line 48 of file waitq.h.

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Member Function Documentation

SPINLOCK_DECLARE (  lock   )

Lock protecting wait queue structure. Must be acquired before T.lock for each T of type thread_t.

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Field Documentation

link_t head

List of sleeping threads for wich there was no missed_wakeup. Definition at line 57 of file waitq.h. Referenced by _rwlock_read_lock_timeout(), _waitq_wakeup_unsafe(), let_others_in(), waitq_initialize(), and waitq_sleep_timeout_unsafe().

int missed_wakeups

Number of waitq_wakeup() calls that didn't find a thread to wake up. Definition at line 56 of file waitq.h. Referenced by _condvar_wait_timeout(), _waitq_wakeup_unsafe(), semaphore_initialize(), waitq_initialize(), and waitq_sleep_timeout_unsafe().

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