Merge pull request #1210 from johnno1962e/thread-safety

swift-ci · web-flow · commit 3618f00d7d29 · 2017-09-14T00:40:39.000-07:00
diff --git a/Foundation/URLSession/URLSession.swift b/Foundation/URLSession/URLSession.swift
@@ -406,9 +406,11 @@ extension URLSession._Request {
 
 fileprivate extension URLSession {
     func createNextTaskIdentifier() -> Int {
-        let i = nextTaskIdentifier
-        nextTaskIdentifier += 1
-        return i
+        return workQueue.sync {
+            let i = nextTaskIdentifier
+            nextTaskIdentifier += 1
+            return i
+        }
     }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -406,9 +406,11 @@ extension URLSession._Request {`
`406`	`406`
`407`	`407`	`fileprivate extension URLSession {`
`408`	`408`	`func createNextTaskIdentifier() -> Int {`
`409`		`- let i = nextTaskIdentifier`
`410`		`- nextTaskIdentifier += 1`
`411`		`- return i`
	`409`	`+ return workQueue.sync {`
	`410`	`+ let i = nextTaskIdentifier`
	`411`	`+ nextTaskIdentifier += 1`
	`412`	`+ return i`
	`413`	`+ }`
`412`	`414`	`}`
`413`	`415`	`}`
`414`	`416`