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kern: update GetInfo logic for tick count InfoTypes

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This commit is contained in:
Michael Scire 2021-09-17 14:57:08 -07:00 • committed by SciresM
parent 6cbfaaf835
commit 6407786059
2 changed files with 23 additions and 22 deletions
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42
libraries/libmesosphere/source/svc/kern_svc_info.cpp
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@ -181,6 +181,9 @@ namespace ams::kern::svc {
/* Verify the input handle is invalid. */
R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
/* Disable dispatch while we get the tick count. */
KScopedDisableDispatch dd;
/* Verify the requested core is valid. */
const bool core_valid = (info_subtype == static_cast<u64>(-1ul)) || (info_subtype == static_cast<u64>(GetCurrentCoreId()));
R_UNLESS(core_valid, svc::ResultInvalidCombination());
@ -223,28 +226,27 @@ namespace ams::kern::svc {
KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(handle);
R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
/* Disable interrupts while we get the tick count. */
/* Disable dispatch while we get the tick count. */
KScopedDisableDispatch dd;
/* Determine the tick count. */
s64 tick_count;
{
KScopedInterruptDisable di;
if (info_subtype == static_cast<u64>(-1ul)) {
tick_count = thread->GetCpuTime();
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
}
} else {
const s32 phys_core = cpu::VirtualToPhysicalCoreMap[info_subtype];
MESOSPHERE_ABORT_UNLESS(phys_core < static_cast<s32>(cpu::NumCores));
if (info_subtype == static_cast<u64>(-1ul)) {
tick_count = thread->GetCpuTime();
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
}
} else {
const s32 phys_core = cpu::VirtualToPhysicalCoreMap[info_subtype];
MESOSPHERE_ABORT_UNLESS(phys_core < static_cast<s32>(cpu::NumCores));
tick_count = thread->GetCpuTime(phys_core);
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe() && phys_core == GetCurrentCoreId()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
}
tick_count = thread->GetCpuTime(phys_core);
if (GetCurrentThreadPointer() == thread.GetPointerUnsafe() && phys_core == GetCurrentCoreId()) {
const s64 cur_tick = KHardwareTimer::GetTick();
const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
tick_count += (cur_tick - prev_switch);
}
}