40 stable releases (11 major)
11.2.0 | Oct 2, 2024 |
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11.1.0 | Jul 16, 2024 |
11.0.2 | Apr 29, 2024 |
11.0.1 | May 3, 2023 |
0.0.2 | Mar 24, 2015 |
#4 in Hardware support
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Used in 1,458 crates
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515KB
9K
SLoC
cpuid
A library to parse the x86 CPUID instruction, written in rust with no external
dependencies. The implementation closely resembles the Intel CPUID manual
description. The library works in no_std
environments. Some additional cargo
features require std
(e.g., pretty printing, serialization).
- For Intel platforms: The code should be in sync with the March 2018 revision of the Intel Architectures SDM.
- For AMD platforms it should be in sync with the AMD64 systems manual no. 24594, Revision 3.32 (March 2021).
Library usage
use raw_cpuid::CpuId;
let cpuid = CpuId::new();
if let Some(vf) = cpuid.get_vendor_info() {
assert!(vf.as_str() == "GenuineIntel" || vf.as_str() == "AuthenticAMD");
}
let has_sse = cpuid.get_feature_info().map_or(false, |finfo| finfo.has_sse());
if has_sse {
println!("CPU supports SSE!");
}
if let Some(cparams) = cpuid.get_cache_parameters() {
for cache in cparams {
let size = cache.associativity() * cache.physical_line_partitions() * cache.coherency_line_size() * cache.sets();
println!("L{}-Cache size is {}", cache.level(), size);
}
} else {
println!("No cache parameter information available")
}
cpuid
binary
raw-cpuid
ships with a cpuid
binary that can be installed to inspect the
output of the CPUID instruction on a host system.
To install, use:
cargo install raw-cpuid --features cli
The cli
feature is currently required to build the binary version due to
cargo limitations.
Documentation
Dependencies
~0–12MB
~72K SLoC