40 lines
1.4 KiB
Swift
40 lines
1.4 KiB
Swift
import Foundation
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enum RDEPUBBackgroundTrace {
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static func log(_ scope: String, _ message: String) {
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let threadRole = Thread.isMainThread ? "main" : "bg"
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let threadName = resolvedThreadName()
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let queueLabel = resolvedQueueLabel()
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print("[EPUB][\(scope)][\(threadRole)][queue=\(queueLabel)][thread=\(threadName)] \(message)")
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}
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static func measure<T>(_ scope: String, _ message: String, work: () throws -> T) rethrows -> T {
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let startedAt = CFAbsoluteTimeGetCurrent()
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log(scope, "START \(message)")
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do {
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let result = try work()
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let elapsedMs = Int((CFAbsoluteTimeGetCurrent() - startedAt) * 1000)
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log(scope, "END \(message) elapsedMs=\(elapsedMs)")
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return result
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} catch {
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let elapsedMs = Int((CFAbsoluteTimeGetCurrent() - startedAt) * 1000)
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log(scope, "FAIL \(message) elapsedMs=\(elapsedMs) error=\(error)")
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throw error
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}
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}
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private static func resolvedThreadName() -> String {
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if let name = Thread.current.name, !name.isEmpty {
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return name
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}
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if Thread.isMainThread {
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return "main"
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}
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return String(describing: Unmanaged.passUnretained(Thread.current).toOpaque())
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}
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private static func resolvedQueueLabel() -> String {
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String(validatingUTF8: __dispatch_queue_get_label(nil)) ?? "unknown"
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}
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}
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