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e4f62e4608
* It is tough to contribute to a project that doesn't use a formatter, * It is extra hard to contribute to a project which has configured the formatter, but ignores it for some files * Code formatting makes it harder to hide obscure / weird bugs by accident or on purpose, Let's rip the bandaid off? Note that PRs currently in flight should be able to be merged relatively easily by applying `clang-format` to their tip prior to merge.
45 lines
856 B
C++
45 lines
856 B
C++
#include "nix/util/types.hh"
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#include "util-config-private.hh"
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#if HAVE_LIBCPUID
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# include <libcpuid/libcpuid.h>
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# include <map>
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#endif
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namespace nix {
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#if HAVE_LIBCPUID
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StringSet computeLevels()
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{
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StringSet levels;
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struct cpu_id_t data;
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const std::map<cpu_feature_level_t, std::string> feature_strings = {
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{FEATURE_LEVEL_X86_64_V1, "x86_64-v1"},
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{FEATURE_LEVEL_X86_64_V2, "x86_64-v2"},
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{FEATURE_LEVEL_X86_64_V3, "x86_64-v3"},
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{FEATURE_LEVEL_X86_64_V4, "x86_64-v4"},
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};
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if (cpu_identify(NULL, &data) < 0)
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return levels;
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for (auto & [level, levelString] : feature_strings)
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if (data.feature_level >= level)
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levels.insert(levelString);
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return levels;
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}
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#else
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StringSet computeLevels()
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{
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return StringSet{};
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}
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#endif // HAVE_LIBCPUID
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} // namespace nix
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