27 lines
927 B
Swift
27 lines
927 B
Swift
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import Foundation
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import Darwin
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/// Resolves a pid to its real executable name via `proc_pidpath`, because
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/// nettop's name column is unreliable (it reported `claude` as `2.1.177`).
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/// Results are cached; drive from a single thread/actor.
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public final class ProcessNamer {
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private var cache: [Int32: String] = [:]
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public init() {}
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public func name(for pid: Int32) -> String? {
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guard pid > 0 else { return nil }
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if let hit = cache[pid] { return hit }
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var buffer = [CChar](repeating: 0, count: 4096) // PROC_PIDPATHINFO_MAXSIZE
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let length = proc_pidpath(pid, &buffer, UInt32(buffer.count))
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guard length > 0 else { return nil }
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let path = String(cString: buffer)
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// `/Applications/Google Chrome.app/.../Google Chrome Helper` -> last component
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let name = (path as NSString).lastPathComponent
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cache[pid] = name
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return name
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}
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}
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