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Kernel: Allow Lock to block from BlockCondition

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This enables the Lock class to block a thread even while the thread is
working on a BlockCondition. A thread can still only be either blocked
by a Lock or a BlockCondition.

This also establishes a linked list of threads that are blocked by a
Lock and unblocking directly unlocks threads and wakes them directly.
This commit is contained in:
Tom 2021-07-10 10:23:16 -06:00 • committed by Andreas Kling
parent d9fb93c5ce
commit 026ffa343d
8 changed files with 442 additions and 267 deletions
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4
Kernel/Process.cpp
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@ -117,7 +117,9 @@ void Process::kill_threads_except_self()
thread.set_should_die();
});
big_lock().clear_waiters();
u32 dropped_lock_count = 0;
if (big_lock().force_unlock_if_locked(dropped_lock_count) != LockMode::Unlocked)
dbgln("Process {} big lock had {} locks", *this, dropped_lock_count);
}
void Process::kill_all_threads()