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author | Wim <wim@42.be> | 2023-03-09 22:48:00 +0100 |
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committer | GitHub <noreply@github.com> | 2023-03-09 22:48:00 +0100 |
commit | 08779c29099e8940493df56d28d8aa131ac8342e (patch) | |
tree | 7ad8ce25cf371e582137e1706dd671a6bf4342d0 /vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go | |
parent | d5f9cdf912d43cd2a5cb243e086fbdab9a9073b0 (diff) | |
download | matterbridge-msglm-08779c29099e8940493df56d28d8aa131ac8342e.tar.gz matterbridge-msglm-08779c29099e8940493df56d28d8aa131ac8342e.tar.bz2 matterbridge-msglm-08779c29099e8940493df56d28d8aa131ac8342e.zip |
Update dependencies (#2007)
* Update dependencies
Diffstat (limited to 'vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go')
-rw-r--r-- | vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go | 112 |
1 files changed, 107 insertions, 5 deletions
diff --git a/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go b/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go index 8d2cb036..84b1acd2 100644 --- a/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go +++ b/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go @@ -2,18 +2,120 @@ package cpuid -import "runtime" +import ( + "runtime" + "strings" + + "golang.org/x/sys/unix" +) func detectOS(c *CPUInfo) bool { + if runtime.GOOS != "ios" { + tryToFillCPUInfoFomSysctl(c) + } // There are no hw.optional sysctl values for the below features on Mac OS 11.0 // to detect their supported state dynamically. Assume the CPU features that // Apple Silicon M1 supports to be available as a minimal set of features // to all Go programs running on darwin/arm64. // TODO: Add more if we know them. c.featureSet.setIf(runtime.GOOS != "ios", AESARM, PMULL, SHA1, SHA2) - c.PhysicalCores = runtime.NumCPU() - // For now assuming 1 thread per core... - c.ThreadsPerCore = 1 - c.LogicalCores = c.PhysicalCores + return true } + +func sysctlGetBool(name string) bool { + value, err := unix.SysctlUint32(name) + if err != nil { + return false + } + return value != 0 +} + +func sysctlGetString(name string) string { + value, err := unix.Sysctl(name) + if err != nil { + return "" + } + return value +} + +func sysctlGetInt(unknown int, names ...string) int { + for _, name := range names { + value, err := unix.SysctlUint32(name) + if err != nil { + continue + } + if value != 0 { + return int(value) + } + } + return unknown +} + +func sysctlGetInt64(unknown int, names ...string) int { + for _, name := range names { + value64, err := unix.SysctlUint64(name) + if err != nil { + continue + } + if int(value64) != unknown { + return int(value64) + } + } + return unknown +} + +func setFeature(c *CPUInfo, name string, feature FeatureID) { + c.featureSet.setIf(sysctlGetBool(name), feature) +} +func tryToFillCPUInfoFomSysctl(c *CPUInfo) { + c.BrandName = sysctlGetString("machdep.cpu.brand_string") + + if len(c.BrandName) != 0 { + c.VendorString = strings.Fields(c.BrandName)[0] + } + + c.PhysicalCores = sysctlGetInt(runtime.NumCPU(), "hw.physicalcpu") + c.ThreadsPerCore = sysctlGetInt(1, "machdep.cpu.thread_count", "kern.num_threads") / + sysctlGetInt(1, "hw.physicalcpu") + c.LogicalCores = sysctlGetInt(runtime.NumCPU(), "machdep.cpu.core_count") + c.Family = sysctlGetInt(0, "machdep.cpu.family", "hw.cpufamily") + c.Model = sysctlGetInt(0, "machdep.cpu.model") + c.CacheLine = sysctlGetInt64(0, "hw.cachelinesize") + c.Cache.L1I = sysctlGetInt64(-1, "hw.l1icachesize") + c.Cache.L1D = sysctlGetInt64(-1, "hw.l1dcachesize") + c.Cache.L2 = sysctlGetInt64(-1, "hw.l2cachesize") + c.Cache.L3 = sysctlGetInt64(-1, "hw.l3cachesize") + + // from https://developer.arm.com/downloads/-/exploration-tools/feature-names-for-a-profile + setFeature(c, "hw.optional.arm.FEAT_AES", AESARM) + setFeature(c, "hw.optional.AdvSIMD", ASIMD) + setFeature(c, "hw.optional.arm.FEAT_DotProd", ASIMDDP) + setFeature(c, "hw.optional.arm.FEAT_RDM", ASIMDRDM) + setFeature(c, "hw.optional.FEAT_CRC32", CRC32) + setFeature(c, "hw.optional.arm.FEAT_DPB", DCPOP) + // setFeature(c, "", EVTSTRM) + setFeature(c, "hw.optional.arm.FEAT_FCMA", FCMA) + setFeature(c, "hw.optional.arm.FEAT_FP", FP) + setFeature(c, "hw.optional.arm.FEAT_FP16", FPHP) + setFeature(c, "hw.optional.arm.FEAT_PAuth", GPA) + setFeature(c, "hw.optional.arm.FEAT_JSCVT", JSCVT) + setFeature(c, "hw.optional.arm.FEAT_LRCPC", LRCPC) + setFeature(c, "hw.optional.arm.FEAT_PMULL", PMULL) + setFeature(c, "hw.optional.arm.FEAT_SHA1", SHA1) + setFeature(c, "hw.optional.arm.FEAT_SHA256", SHA2) + setFeature(c, "hw.optional.arm.FEAT_SHA3", SHA3) + setFeature(c, "hw.optional.arm.FEAT_SHA512", SHA512) + // setFeature(c, "", SM3) + // setFeature(c, "", SM4) + setFeature(c, "hw.optional.arm.FEAT_SVE", SVE) + + // from empirical observation + setFeature(c, "hw.optional.AdvSIMD_HPFPCvt", ASIMDHP) + setFeature(c, "hw.optional.armv8_1_atomics", ATOMICS) + setFeature(c, "hw.optional.floatingpoint", FP) + setFeature(c, "hw.optional.armv8_2_sha3", SHA3) + setFeature(c, "hw.optional.armv8_2_sha512", SHA512) + setFeature(c, "hw.optional.armv8_3_compnum", FCMA) + setFeature(c, "hw.optional.armv8_crc32", CRC32) +} |