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CoreTiming: Fix scheduling into the past

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ForceExceptionCheck messes up the downcount and slice length if the
callback is scheduled into the past (g_slice_length becomes negative)
This commit is contained in:
EmptyChaos
2016-09-02 02:18:14 +00:00
parent ac63e54473
commit 59465911d7
2 changed files with 9 additions and 1 deletions
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3
Source/Core/Core/CoreTiming.cpp
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@ -282,11 +282,12 @@ void RemoveAllEvents(EventType* event_type)
void ForceExceptionCheck(s64 cycles)
{
cycles = std::max<s64>(0, cycles);
if (DowncountToCycles(PowerPC::ppcState.downcount) > cycles)
{
// downcount is always (much) smaller than MAX_INT so we can safely cast cycles to an int here.
// Account for cycles already executed by adjusting the g_slice_length
g_slice_length -= (DowncountToCycles(PowerPC::ppcState.downcount) - static_cast<int>(cycles));
g_slice_length -= DowncountToCycles(PowerPC::ppcState.downcount) - static_cast<int>(cycles);
PowerPC::ppcState.downcount = CyclesToDowncount(static_cast<int>(cycles));
}
}