Imlpemented main

Author: dileping

ExecutionContext/ExecutionContext.swift

@@ -167,3 +167,13 @@ public func sleep(timeout:Double) {
 
     nanosleep(&time, nil)
 }
+
+@noreturn public func executionContextMain() {
+    #if os(Linux)
+        while true {
+            CFRunLoopRunInMode(defaultMode, 0, true)
+        }
+    #else
+        dispatch_main()
+    #endif
+}

ExecutionContext/PThreadExecutionContext.swift

@@ -207,15 +207,15 @@
         }
     }
 
+#if !os(Linux)
+    private let defaultMode:CFString = "kCFRunLoopDefaultMode" as NSString
+#else
+    private let defaultMode:CFString = "kCFRunLoopDefaultMode".bridge().cfString
+#endif
+    
     private class SerialContext : ExecutionContextBase, ExecutionContextType {
         private let rl:CFRunLoop!
         private let finalizer: RunLoopFinalizer?
-
-        #if !os(Linux)
-        private static let defaultMode:CFString = "kCFRunLoopDefaultMode" as NSString
-        #else
-        private static let defaultMode:CFString = "kCFRunLoopDefaultMode".bridge().cfString
-        #endif
 
         override init() {
             var runLoop:CFRunLoop?