SwiftLint/Source/SwiftLintFramework/Extensions/QueuedPrint.swift

56 lines
1.2 KiB
Swift

import Dispatch
import Foundation
private let outputQueue: DispatchQueue = {
let queue = DispatchQueue(
label: "io.realm.swiftlint.outputQueue",
qos: .userInteractive,
target: .global(qos: .userInteractive)
)
#if !os(Linux)
atexit_b {
queue.sync(flags: .barrier) {}
}
#endif
return queue
}()
/**
A thread-safe version of Swift's standard `print()`.
- parameter object: Object to print.
*/
public func queuedPrint<T>(_ object: T) {
outputQueue.async {
print(object)
}
}
/**
A thread-safe, newline-terminated version of `fputs(..., stderr)`.
- parameter string: String to print.
*/
public func queuedPrintError(_ string: String) {
outputQueue.async {
fflush(stdout)
fputs(string + "\n", stderr)
}
}
/**
A thread-safe, newline-terminated version of `fatalError(...)` that doesn't leak
the source path from the compiled binary.
*/
public func queuedFatalError(_ string: String, file: StaticString = #file, line: UInt = #line) -> Never {
outputQueue.sync {
fflush(stdout)
let file = "\(file)".bridge().lastPathComponent
fputs("\(string): file \(file), line \(line)\n", stderr)
}
abort()
}