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a0f404551e
We ignore allocation failures above the first 32 guaranteed thread slots, and just flag our future-selves to finalize these threads at a later point.
34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Process.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Tasks/FinalizerTask.h>
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namespace Kernel {
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static void finalizer_task(void*)
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{
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Thread::current()->set_priority(THREAD_PRIORITY_LOW);
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for (;;) {
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// The order of this if-else is important: We want to continue trying to finalize the threads in case
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// Thread::finalize_dying_threads set g_finalizer_has_work back to true due to OOM conditions
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if (g_finalizer_has_work.exchange(false, AK::MemoryOrder::memory_order_acq_rel) == true)
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Thread::finalize_dying_threads();
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else
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g_finalizer_wait_queue->wait_forever("FinalizerTask");
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}
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};
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UNMAP_AFTER_INIT void FinalizerTask::spawn()
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{
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RefPtr<Thread> finalizer_thread;
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auto finalizer_process = Process::create_kernel_process(finalizer_thread, KString::must_create("FinalizerTask"), finalizer_task, nullptr);
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VERIFY(finalizer_process);
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g_finalizer = finalizer_thread;
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}
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}
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