ladybird/Kernel/Syscalls/beep.cpp
Brian Gianforcaro 1682f0b760 Everything: Move to SPDX license identifiers in all files.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:22:27 +02:00

23 lines
453 B
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Devices/PCSpeaker.h>
#include <Kernel/Process.h>
namespace Kernel {
KResultOr<int> Process::sys$beep()
{
PCSpeaker::tone_on(440);
auto result = Thread::current()->sleep(Time::from_nanoseconds(200'000'000));
PCSpeaker::tone_off();
if (result.was_interrupted())
return EINTR;
return 0;
}
}