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Kernel: Use a WaitQueue to implement finalizer wakeup

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This gets rid of the special "Lurking" thread state and replaces it
with a generic WaitQueue :^)
This commit is contained in:
Andreas Kling 2019-12-01 19:17:17 +01:00
parent 5a45376180
commit 8bb98aa31b
5 changed files with 9 additions and 9 deletions
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8
Kernel/Scheduler.cpp
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@ -46,6 +46,7 @@ static u32 time_slice_for(ThreadPriority priority)
Thread* current;
Thread* g_last_fpu_thread;
Thread* g_finalizer;
WaitQueue* g_finalizer_wait_queue;
static Process* s_colonel_process;
u64 g_uptime;
static u64 s_beep_timeout;
@ -257,6 +258,7 @@ void Thread::consider_unblock(time_t now_sec, long now_usec)
case Thread::Dead:
case Thread::Stopped:
case Thread::Queued:
case Thread::Dying:
/* don't know, don't care */
return;
case Thread::Blocked:
@ -270,11 +272,6 @@ void Thread::consider_unblock(time_t now_sec, long now_usec)
case Thread::Skip0SchedulerPasses:
set_state(Thread::Runnable);
return;
case Thread::Dying:
ASSERT(g_finalizer);
if (g_finalizer->is_blocked())
g_finalizer->unblock();
return;
}
}
@ -534,6 +531,7 @@ Process* Scheduler::colonel()
void Scheduler::initialize()
{
g_scheduler_data = new SchedulerData;
g_finalizer_wait_queue = new WaitQueue;
s_redirection.selector = gdt_alloc_entry();
initialize_redirection();
s_colonel_process = Process::create_kernel_process("colonel", nullptr);