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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Sections.h>
#include <Kernel/Tasks/FinalizerTask.h>
#include <Kernel/Tasks/Process.h>
#include <Kernel/Tasks/Scheduler.h>
namespace Kernel {
static constexpr StringView finalizer_task_name = "Finalizer Task"sv;
static void finalizer_task(void*)
{
Thread::current()->set_priority(THREAD_PRIORITY_LOW);
for (;;) {
// The order of this if-else is important: We want to continue trying to finalize the threads in case
// Thread::finalize_dying_threads set g_finalizer_has_work back to true due to OOM conditions
if (g_finalizer_has_work.exchange(false, AK::MemoryOrder::memory_order_acq_rel) == true)
Thread::finalize_dying_threads();
else
g_finalizer_wait_queue->wait_forever(finalizer_task_name);
}
};
UNMAP_AFTER_INIT void FinalizerTask::spawn()
{
auto [_, finalizer_thread] = MUST(Process::create_kernel_process(KString::must_create(finalizer_task_name), finalizer_task, nullptr));
g_finalizer = move(finalizer_thread);
}
}
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