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Kernel: Make CLOCK_MONOTONIC respect the system tick frequency

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The time returned by sys$clock_gettime() was not aligned with the delay
calculations in sys$clock_nanosleep(). This patch fixes that by taking
the system's ticks_per_second value into account in both functions.

This patch also removes the need for Thread::sleep_until() and uses
Thread::sleep() for both absolute and relative sleeps.

This was causing the nesalizer emulator port to sleep for a negative
amount of time at the end of each frame, making it run way too fast.
This commit is contained in:
Andreas Kling 2020-11-22 17:20:58 +01:00
parent e07d14f4d9
commit 94ff04b536
3 changed files with 18 additions and 27 deletions
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9
Kernel/Thread.cpp
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@ -258,15 +258,6 @@ u64 Thread::sleep(u64 ticks)
return wakeup_time;
}
u64 Thread::sleep_until(u64 wakeup_time)
{
ASSERT(state() == Thread::Running);
auto ret = Thread::current()->block<Thread::SleepBlocker>(nullptr, wakeup_time);
if (wakeup_time > g_uptime)
ASSERT(ret.was_interrupted());
return wakeup_time;
}
const char* Thread::state_string() const
{
switch (state()) {