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9201a06027
Before we start disabling acquisition of the big process lock for specific syscalls, make sure to document and assert that all the lock is held during all syscalls.
24 lines
501 B
C++
24 lines
501 B
C++
/*
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* Copyright (c) 2018-2020, 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/Devices/PCSpeaker.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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KResultOr<FlatPtr> Process::sys$beep()
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
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PCSpeaker::tone_on(440);
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auto result = Thread::current()->sleep(Time::from_nanoseconds(200'000'000));
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PCSpeaker::tone_off();
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if (result.was_interrupted())
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return EINTR;
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return 0;
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}
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}
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