1 files changed, 13 insertions, 0 deletions
diff --git a/Kernel/Scheduler.cpp b/Kernel/Scheduler.cpp
index 3ee614533b..356a009b63 100644
--- a/Kernel/Scheduler.cpp
+++ b/Kernel/Scheduler.cpp
@@ -5,6 +5,7 @@
 #include <AK/TemporaryChange.h>
 #include <Kernel/Alarm.h>
 #include <Kernel/FileSystem/FileDescriptor.h>
+#include <Kernel/Devices/PCSpeaker.h>
 
 //#define LOG_EVERY_CONTEXT_SWITCH
 //#define SCHEDULER_DEBUG
@@ -30,6 +31,7 @@ Thread* g_last_fpu_thread;
 Thread* g_finalizer;
 static Process* s_colonel_process;
 qword g_uptime;
+static qword s_beep_timeout;
 
 struct TaskRedirectionData {
     word selector;
@@ -43,6 +45,12 @@ bool Scheduler::is_active()
     return s_active;
 }
 
+void Scheduler::beep()
+{
+    PCSpeaker::tone_on(440);
+    s_beep_timeout = g_uptime + 100;
+}
+
 bool Scheduler::pick_next()
 {
     ASSERT_INTERRUPTS_DISABLED();
@@ -395,6 +403,11 @@ void Scheduler::timer_tick(RegisterDump& regs)
 
     ++g_uptime;
 
+    if (s_beep_timeout && g_uptime > s_beep_timeout) {
+        PCSpeaker::tone_off();
+        s_beep_timeout = 0;
+    }
+
     if (current->tick())
         return;