tiny.simd.topology

1pub const Cluster = struct {2    lps: LogicalProcessorSet = .{},3    private_kib: u64 = 0,4    shared_kib: u64 = 0,5    reserved1: u64 = 0,6    reserved2: u64 = 0,7    reserved3: u64 = 0,8};

1pub const Core = struct {2    lps: LogicalProcessorSet = .{},3    reserved: u64 = 0,4};

1pub const LP = packed struct {2    cluster: u16 = 0,3    core: u16 = 0,4    package: u8 = 0,5    smt: u8 = 0,6    node: u8 = 0,7    reserved: u8 = 0,8};

1pub const Package = struct {2    clusters: []const Cluster,3    cores: []const Core,4};

1pub const ProcessorRecord = struct {2    package_id: u64,3    cluster_id: u64,4    core_id: u64,5    node: u8 = 0,6    private_kib: u64 = 0,7    shared_kib: u64 = 0,8};

1pub const Error = std.mem.Allocator.Error || CapacityError;

1pub fn computeCacheSets(cache: *Cache) bool {2    if (cache.size_kib == 0) {3        cache.sets = 0;4        return true;5    }6    if (cache.bytes_per_line == 0 or cache.associativity == 0) return false;7    const bytes = @as(u64, cache.size_kib) * 1024;8    const computed = bytes / cache.bytes_per_line / cache.associativity;9    if (computed > std.math.maxInt(u32)) return false;10    if (cache.sets == 0) {11        cache.sets = @intCast(computed);12        return true;13    }14    const actual: u64 = cache.sets;15    return actual >= computed and actual - computed <= 1;16}

1pub const topology = @import("topology/root.zig");

1const model = @import("model.zig");2const native = @import("native.zig");3const parsing = @import("parse/root.zig");45pub const max_logical_processors = model.max_logical_processors;6pub const LogicalProcessorSet = model.LogicalProcessorSet;7pub const LP = model.LP;8pub const Cluster = model.Cluster;9pub const Core = model.Core;10pub const Package = model.Package;11pub const Cache = model.Cache;12pub const ProcessorRecord = model.ProcessorRecord;13pub const Topology = model.Topology;14pub const Error = model.Error;15pub const computeCacheSets = model.computeCacheSets;1617pub const haveThreadingSupport = native.haveThreadingSupport;18pub const totalLogicalProcessors = native.totalLogicalProcessors;19pub const getThreadAffinity = native.getThreadAffinity;20pub const setThreadAffinity = native.setThreadAffinity;21pub const pinThreadToLogicalProcessor = native.pinThreadToLogicalProcessor;22pub const init = native.init;23pub const dataCaches = native.dataCaches;2425pub const testing = struct {26    pub const CpuListOptions: type = parsing.CpuListOptions;27    pub const parseCpuList = parsing.cpuList;28    pub const parseNumberWithOptionalSuffix =29        parsing.numberWithOptionalSuffix;30    pub const computeCacheSets = model.computeCacheSets;31};