Struct raw_cpuid::CpuId

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pub struct CpuId { /* private fields */ }
Expand description

The main type used to query information about the CPU we’re running on.

Other structs can be accessed by going through this type.

Implementations§

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impl CpuId

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pub fn new() -> Self

Return new CpuId struct.

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pub fn with_cpuid_fn(cpuid_fn: fn(_: u32, _: u32) -> CpuIdResult) -> Self

Return new CpuId struct with custom reader function.

This is useful for example when testing code or if we want to interpose on the CPUID calls this library makes.

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pub fn get_vendor_info(&self) -> Option<VendorInfo>

Return information about the vendor (LEAF=0x00).

This leaf will contain a ASCII readable string such as “GenuineIntel” for Intel CPUs or “AuthenticAMD” for AMD CPUs.

Platforms

✅ AMD ✅ Intel

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pub fn get_feature_info(&self) -> Option<FeatureInfo>

Query a set of features that are available on this CPU (LEAF=0x01).

Platforms

✅ AMD ✅ Intel

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pub fn get_cache_info(&self) -> Option<CacheInfoIter>

Query basic information about caches (LEAF=0x02).

Platforms

❌ AMD ✅ Intel

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pub fn get_processor_serial(&self) -> Option<ProcessorSerial>

Retrieve serial number of processor (LEAF=0x03).

Platforms

❌ AMD ✅ Intel

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pub fn get_cache_parameters(&self) -> Option<CacheParametersIter>

Retrieve more elaborate information about caches (LEAF=0x04 or 0x8000_001D).

As opposed to get_cache_info, this will tell us about associativity, set size, line size of each level in the cache hierarchy.

Platforms

🟡 AMD ✅ Intel

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pub fn get_monitor_mwait_info(&self) -> Option<MonitorMwaitInfo>

Information about how monitor/mwait works on this CPU (LEAF=0x05).

Platforms

🟡 AMD ✅ Intel

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pub fn get_thermal_power_info(&self) -> Option<ThermalPowerInfo>

Query information about thermal and power management features of the CPU (LEAF=0x06).

Platforms

🟡 AMD ✅ Intel

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pub fn get_extended_feature_info(&self) -> Option<ExtendedFeatures>

Find out about more features supported by this CPU (LEAF=0x07).

Platforms

🟡 AMD ✅ Intel

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pub fn get_direct_cache_access_info(&self) -> Option<DirectCacheAccessInfo>

Direct cache access info (LEAF=0x09).

Platforms

❌ AMD ✅ Intel

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pub fn get_performance_monitoring_info( &self ) -> Option<PerformanceMonitoringInfo>

Info about performance monitoring (LEAF=0x0A).

Platforms

❌ AMD ✅ Intel

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pub fn get_extended_topology_info(&self) -> Option<ExtendedTopologyIter>

Information about topology (LEAF=0x0B).

Intel SDM suggests software should check support for leaf 0x1F (CpuId::get_extended_topology_info_v2), and if supported, enumerate that leaf instead.

Platforms

✅ AMD ✅ Intel

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pub fn get_extended_topology_info_v2(&self) -> Option<ExtendedTopologyIter>

Extended information about topology (LEAF=0x1F).

Platforms

❌ AMD ✅ Intel

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pub fn get_extended_state_info(&self) -> Option<ExtendedStateInfo>

Information for saving/restoring extended register state (LEAF=0x0D).

Platforms

✅ AMD ✅ Intel

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pub fn get_rdt_monitoring_info(&self) -> Option<RdtMonitoringInfo>

Quality of service monitoring information (LEAF=0x0F).

Platforms

❌ AMD ✅ Intel

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pub fn get_rdt_allocation_info(&self) -> Option<RdtAllocationInfo>

Quality of service enforcement information (LEAF=0x10).

Platforms

❌ AMD ✅ Intel

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pub fn get_sgx_info(&self) -> Option<SgxInfo>

Information about secure enclave support (LEAF=0x12).

Platforms

❌ AMD ✅ Intel

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pub fn get_processor_trace_info(&self) -> Option<ProcessorTraceInfo>

Intel Processor Trace Enumeration Information (LEAF=0x14).

Platforms

❌ AMD ✅ Intel

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pub fn get_tsc_info(&self) -> Option<TscInfo>

Time Stamp Counter/Core Crystal Clock Information (LEAF=0x15).

Platforms

❌ AMD ✅ Intel

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pub fn get_processor_frequency_info(&self) -> Option<ProcessorFrequencyInfo>

Processor Frequency Information (LEAF=0x16).

Platforms

❌ AMD ✅ Intel

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pub fn get_soc_vendor_info(&self) -> Option<SoCVendorInfo>

Contains SoC vendor specific information (LEAF=0x17).

Platforms

❌ AMD ✅ Intel

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pub fn get_deterministic_address_translation_info(&self) -> Option<DatIter>

Query deterministic address translation feature (LEAF=0x18).

Platforms

❌ AMD ✅ Intel

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pub fn get_hypervisor_info(&self) -> Option<HypervisorInfo>

Returns information provided by the hypervisor, if running in a virtual environment (LEAF=0x4000_00xx).

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Needs to be a virtual CPU to be supported.

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pub fn get_extended_processor_and_feature_identifiers( &self ) -> Option<ExtendedProcessorFeatureIdentifiers>

Extended Processor and Processor Feature Identifiers (LEAF=0x8000_0001).

Platforms

✅ AMD 🟡 Intel

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pub fn get_processor_brand_string(&self) -> Option<ProcessorBrandString>

Retrieve processor brand string (LEAF=0x8000_000{2..4}).

Platforms

✅ AMD ✅ Intel

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pub fn get_l1_cache_and_tlb_info(&self) -> Option<L1CacheTlbInfo>

L1 Instruction Cache Information (LEAF=0x8000_0005)

Platforms

✅ AMD ❌ Intel (reserved)

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pub fn get_l2_l3_cache_and_tlb_info(&self) -> Option<L2And3CacheTlbInfo>

L2/L3 Cache and TLB Information (LEAF=0x8000_0006).

Platforms

✅ AMD 🟡 Intel

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pub fn get_advanced_power_mgmt_info(&self) -> Option<ApmInfo>

Advanced Power Management Information (LEAF=0x8000_0007).

Platforms

✅ AMD 🟡 Intel

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pub fn get_processor_capacity_feature_info( &self ) -> Option<ProcessorCapacityAndFeatureInfo>

Processor Capacity Parameters and Extended Feature Identification (LEAF=0x8000_0008).

Platforms

✅ AMD 🟡 Intel

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pub fn get_svm_info(&self) -> Option<SvmFeatures>

This function provides information about the SVM features that the processory supports. (LEAF=0x8000_000A)

If SVM is not supported if ExtendedProcessorFeatureIdentifiers::has_svm is false, this function is reserved then.

Platforms

✅ AMD ❌ Intel

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pub fn get_tlb_1gb_page_info(&self) -> Option<Tlb1gbPageInfo>

TLB 1-GiB Pages Information (LEAF=0x8000_0019)

Platforms

✅ AMD ❌ Intel

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pub fn get_performance_optimization_info( &self ) -> Option<PerformanceOptimizationInfo>

Informations about performance optimization (LEAF=0x8000_001A)

Platforms

✅ AMD ❌ Intel (reserved)

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pub fn get_processor_topology_info(&self) -> Option<ProcessorTopologyInfo>

Informations about processor topology (LEAF=0x8000_001E)

Platforms

✅ AMD ❌ Intel (reserved)

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pub fn get_memory_encryption_info(&self) -> Option<MemoryEncryptionInfo>

Informations about memory encryption support (LEAF=0x8000_001F)

Platforms

✅ AMD ❌ Intel (reserved)

Trait Implementations§

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impl Clone for CpuId

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fn clone(&self) -> CpuId

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CpuId

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for CpuId

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fn default() -> CpuId

Returns the “default value” for a type. Read more
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impl Copy for CpuId

Auto Trait Implementations§

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impl RefUnwindSafe for CpuId

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impl Send for CpuId

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impl Sync for CpuId

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impl Unpin for CpuId

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impl UnwindSafe for CpuId

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.