Use atexit on Linux

Fixes #3214
realm · Aug 5, 2020 · caedfcb · caedfcb
1 parent 8638d23
commit caedfcb
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -71,6 +71,11 @@
   [Marcelo Fabri](https://github.com/marcelofabri)
   [#3225](https://github.com/realm/SwiftLint/issues/3225)
 
+* Fix some cases where the output would be incomplete when running 
+  SwiftLint on Linux.  
+  [Marcelo Fabri](https://github.com/marcelofabri)
+  [#3214](https://github.com/realm/SwiftLint/issues/3214)
+
 ## 0.39.2: Stay Home
 
 This is the last release to support building with Swift 5.0.x.

diff --git a/Source/SwiftLintFramework/Extensions/QueuedPrint.swift b/Source/SwiftLintFramework/Extensions/QueuedPrint.swift
@@ -8,15 +8,19 @@ private let outputQueue: DispatchQueue = {
         target: .global(qos: .userInteractive)
     )
 
-    #if !os(Linux)
-    atexit_b {
-        queue.sync(flags: .barrier) {}
+    defer {
+        setupAtExitHandler()
     }
-    #endif
 
     return queue
 }()
 
+private func setupAtExitHandler() {
+    atexit {
+        outputQueue.sync(flags: .barrier) {}
+    }
+}
+
 /**
  A thread-safe version of Swift's standard `print()`.