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Kernel: Disable big process lock for sys$beep()

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The PCSpeaker is global and not locked anyways, so there's no need for
mutual exclusion between threads in the same process.
This commit is contained in:
Idan Horowitz 2021-08-06 14:22:21 +03:00 committed by Andreas Kling
parent c3f668a758
commit da0b7d1737
Notes: sideshowbarker 2024-07-18 07:24:01 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/da0b7d17379
Pull-request: https://github.com/SerenityOS/serenity/pull/9236
Reviewed-by: https://github.com/tomuta ✅
2 changed files with 2 additions and 2 deletions
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2
Kernel/API/Syscall.h
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@ -133,7 +133,7 @@ enum class NeedsBigProcessLock {
S(exit_thread, NeedsBigProcessLock::Yes) \
S(mknod, NeedsBigProcessLock::Yes) \
S(writev, NeedsBigProcessLock::Yes) \
S(beep, NeedsBigProcessLock::Yes) \
S(beep, NeedsBigProcessLock::No) \
S(getsockname, NeedsBigProcessLock::Yes) \
S(getpeername, NeedsBigProcessLock::Yes) \
S(socketpair, NeedsBigProcessLock::Yes) \

2
Kernel/Syscalls/beep.cpp
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@ -11,7 +11,7 @@ namespace Kernel {
KResultOr<FlatPtr> Process::sys$beep()
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
VERIFY_NO_PROCESS_BIG_LOCK(this);
PCSpeaker::tone_on(440);
auto result = Thread::current()->sleep(Time::from_nanoseconds(200'000'000));
PCSpeaker::tone_off();