SystemInfoKit

SystemInfoKit provides macOS/iOS system information.

• CPU usage
• Memory performance
• Storage capacity
• Battery state
• Network connection

Requirements

• Development with Xcode 26.3+
• Written in Swift 6.2
• Compatible with macOS 13.0+, iOS 16.0+

Installation

SystemInfoKit supports Swift Package Manager.

Usage

import SystemInfoKit

// Get all system info per 3 seconds
let observer = SystemInfoObserver.shared

Task {
    for await systemInfoBundle in observer.systemInfoStream() {
        Swift.print(systemInfoBundle)
    }
}
observer.startMonitoring(monitorInterval: 3.0)

// Finish to get system info
observer.stopMonitoring()

Broadcasting to multiple consumers

systemInfoStream() returns a single-consumer AsyncStream. If two for await loops iterate the same stream, they will compete for values rather than each receiving every update. SystemInfoKit intentionally does not own the multi-broadcast concern — wrap the stream with swift-async-algorithms' share() on the consumer side.

import AsyncAlgorithms
import SystemInfoKit

let observer = SystemInfoObserver.shared
let shared = observer.systemInfoStream().share()

Task {
    for await systemInfoBundle in shared {
        Swift.print("subscriber A:", systemInfoBundle)
    }
}
Task {
    for await systemInfoBundle in shared {
        Swift.print("subscriber B:", systemInfoBundle)
    }
}
observer.startMonitoring(monitorInterval: 3.0)

Reading the latest snapshot synchronously

If you only need the most recent values without subscribing to the stream, use currentSystemInfo:

let snapshot = observer.currentSystemInfo
Swift.print(snapshot.cpuInfo, snapshot.memoryInfo)

Fields corresponding to a SystemInfoType that has not yet been updated (or has been disabled via toggleActivation) remain nil.

Sample Output

CPU:  7.5%
    System:  2.9%
    User:  4.6%
    Idle: 92.5%
Memory: 72.9%
    Pressure: 33.1%
    App:  6.4 GB
    Wired:  1.8 GB
    Compressed:  3.5 GB
Storage: 58.7% used
    584.13 GB / 994.66 GB
Battery:  98.2%
    Power Source: SomeAdapter
    Max Capacity:  95.7%
    Cycle Count: 7
    Temperature: 30.2°C
Network: Ethernet
    Local IP: 192.0.2.1
    Upload:  50.7 kB/s
    Download:   1.7 kB/s

Supported languages

• Chinese, Simplified
• Chinese, Traditional
• English (primary)
• French
• German
• Japanese
• Korean
• Russian
• Spanish
• Vietnamese

Copyright and License

Copyright 2020 Takuto Nakamura

Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0