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kern: SvcGetResourceLimitPeakValue

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This commit is contained in:
Michael Scire 2020-12-01 06:07:18 -08:00 committed by SciresM
parent cc11d452e5
commit f469dfbeb3
5 changed files with 48 additions and 2 deletions
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4
libraries/libmesosphere/include/mesosphere/kern_k_resource_limit.hpp
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@ -28,11 +28,12 @@ namespace ams::kern {
s64 limit_values[ams::svc::LimitableResource_Count];
s64 current_values[ams::svc::LimitableResource_Count];
s64 current_hints[ams::svc::LimitableResource_Count];
s64 peak_values[ams::svc::LimitableResource_Count];
mutable KLightLock lock;
s32 waiter_count;
KLightConditionVariable cond_var;
public:
constexpr ALWAYS_INLINE KResourceLimit() : limit_values(), current_values(), current_hints(), lock(), waiter_count(), cond_var() { /* ... */ }
constexpr ALWAYS_INLINE KResourceLimit() : limit_values(), current_values(), current_hints(), peak_values(), lock(), waiter_count(), cond_var() { /* ... */ }
virtual ~KResourceLimit() { /* ... */ }
static void PostDestroy(uintptr_t arg) { MESOSPHERE_UNUSED(arg); /* ... */ }
@ -42,6 +43,7 @@ namespace ams::kern {
s64 GetLimitValue(ams::svc::LimitableResource which) const;
s64 GetCurrentValue(ams::svc::LimitableResource which) const;
s64 GetPeakValue(ams::svc::LimitableResource which) const;
s64 GetFreeValue(ams::svc::LimitableResource which) const;
Result SetLimitValue(ams::svc::LimitableResource which, s64 value);

17
libraries/libmesosphere/source/kern_k_resource_limit.cpp
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@ -32,6 +32,7 @@ namespace ams::kern {
this->limit_values[i] = 0;
this->current_values[i] = 0;
this->current_hints[i] = 0;
this->peak_values[i] = 0;
}
*/
}
@ -70,6 +71,21 @@ namespace ams::kern {
return value;
}
s64 KResourceLimit::GetPeakValue(ams::svc::LimitableResource which) const {
MESOSPHERE_ASSERT_THIS();
s64 value;
{
KScopedLightLock lk(this->lock);
value = this->peak_values[which];
MESOSPHERE_ASSERT(value >= 0);
MESOSPHERE_ASSERT(this->current_values[which] <= this->limit_values[which]);
MESOSPHERE_ASSERT(this->current_hints[which] <= this->current_values[which]);
}
return value;
}
s64 KResourceLimit::GetFreeValue(ams::svc::LimitableResource which) const {
MESOSPHERE_ASSERT_THIS();
@ -124,6 +140,7 @@ namespace ams::kern {
if (this->current_values[which] + value <= this->limit_values[which]) {
this->current_values[which] += value;
this->current_hints[which] += value;
this->peak_values[which] = std::max(this->peak_values[which], this->current_values[which]);
return true;
}

22
libraries/libmesosphere/source/svc/kern_svc_resource_limit.cpp
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@ -53,6 +53,20 @@ namespace ams::kern::svc {
return ResultSuccess();
}
Result GetResourceLimitPeakValue(int64_t *out_peak_value, ams::svc::Handle resource_limit_handle, ams::svc::LimitableResource which) {
/* Validate the resource. */
R_UNLESS(IsValidLimitableResource(which), svc::ResultInvalidEnumValue());
/* Get the resource limit. */
KScopedAutoObject resource_limit = GetCurrentProcess().GetHandleTable().GetObject<KResourceLimit>(resource_limit_handle);
R_UNLESS(resource_limit.IsNotNull(), svc::ResultInvalidHandle());
/* Get the peak value. */
*out_peak_value = resource_limit->GetCurrentValue(which);
return ResultSuccess();
}
Result CreateResourceLimit(ams::svc::Handle *out_handle) {
/* Create a new resource limit. */
KResourceLimit *resource_limit = KResourceLimit::Create();
@ -99,6 +113,10 @@ namespace ams::kern::svc {
return GetResourceLimitCurrentValue(out_current_value, resource_limit_handle, which);
}
Result GetResourceLimitPeakValue64(int64_t *out_peak_value, ams::svc::Handle resource_limit_handle, ams::svc::LimitableResource which) {
return GetResourceLimitPeakValue(out_peak_value, resource_limit_handle, which);
}
Result CreateResourceLimit64(ams::svc::Handle *out_handle) {
return CreateResourceLimit(out_handle);
}
@ -117,6 +135,10 @@ namespace ams::kern::svc {
return GetResourceLimitCurrentValue(out_current_value, resource_limit_handle, which);
}
Result GetResourceLimitPeakValue64From32(int64_t *out_peak_value, ams::svc::Handle resource_limit_handle, ams::svc::LimitableResource which) {
return GetResourceLimitPeakValue(out_peak_value, resource_limit_handle, which);
}
Result CreateResourceLimit64From32(ams::svc::Handle *out_handle) {
return CreateResourceLimit(out_handle);
}

1
libraries/libvapours/include/vapours/svc/svc_definitions.hpp
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@ -83,6 +83,7 @@
HANDLER(0x34, Result, WaitForAddress, INPUT(::ams::svc::Address, address), INPUT(::ams::svc::ArbitrationType, arb_type), INPUT(int32_t, value), INPUT(int64_t, timeout_ns)) \
HANDLER(0x35, Result, SignalToAddress, INPUT(::ams::svc::Address, address), INPUT(::ams::svc::SignalType, signal_type), INPUT(int32_t, value), INPUT(int32_t, count)) \
HANDLER(0x36, void, SynchronizePreemptionState) \
HANDLER(0x37, Result, GetResourceLimitPeakValue, OUTPUT(int64_t, out_peak_value), INPUT(::ams::svc::Handle, resource_limit_handle), INPUT(::ams::svc::LimitableResource, which)) \
\
HANDLER(0x3C, void, KernelDebug, INPUT(::ams::svc::KernelDebugType, kern_debug_type), INPUT(uint64_t, arg0), INPUT(uint64_t, arg1), INPUT(uint64_t, arg2)) \
HANDLER(0x3D, void, ChangeKernelTraceState, INPUT(::ams::svc::KernelTraceState, kern_trace_state)) \

6
libraries/libvapours/include/vapours/svc/svc_types_common.hpp
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@ -391,6 +391,9 @@ namespace ams::svc {
/* 7.x+ Should memory allocation be optimized? This requires IsApplication. */
CreateProcessFlag_OptimizeMemoryAllocation = (1 << 11),
/* 11.x+ DisableDeviceAddressSpaceMerge. */
CreateProcessFlag_DisableDeviceAddressSpaceMerge = (1 << 12),
/* Mask of all flags. */
CreateProcessFlag_All = CreateProcessFlag_Is64Bit |
CreateProcessFlag_AddressSpaceMask |
@ -398,7 +401,8 @@ namespace ams::svc {
CreateProcessFlag_EnableAslr |
CreateProcessFlag_IsApplication |
CreateProcessFlag_PoolPartitionMask |
CreateProcessFlag_OptimizeMemoryAllocation,
CreateProcessFlag_OptimizeMemoryAllocation |
CreateProcessFlag_DisableDeviceAddressSpaceMerge,
};
/* Debug types. */