add //FIXME for FreeBSD outcommented code, add sys/event.h for kqueue (untested)

Author: kstaring

stdlib/private/StdlibUnittest/RaceTest.swift

@@ -54,6 +54,7 @@ func autoreleasepool(invoking code: () -> Void) {
 }
 #endif
 
+// FIXME: On FreeBSD, code in this file doesn't compile
 #if !os(FreeBSD)
 /// Race tests that need a fresh set of data for every trial should implement
 /// this protocol.

stdlib/private/SwiftPrivatePthreadExtras/PthreadBarriers.swift

@@ -16,6 +16,7 @@ import Darwin
 import Glibc
 #endif
 
+// FIXME: On FreeBSD, code in this file doesn't compile
 #if !os(FreeBSD)
 //
 // Implement pthread barriers.

stdlib/private/SwiftPrivatePthreadExtras/SwiftPrivatePthreadExtras.swift

@@ -21,6 +21,7 @@ import Darwin
 import Glibc
 #endif
 
+// FIXME: On FreeBSD, code in this file doesn't compile
 #if !os(FreeBSD)
 /// An abstract base class to encapsulate the context necessary to invoke
 /// a block from pthread_create.

stdlib/public/Platform/glibc.modulemap.gyb

@@ -380,6 +380,12 @@ module SwiftGlibc [system] {
         header "${GLIBC_ARCH_INCLUDE_PATH}/sys/types.h"
         export *
       }
+% if CMAKE_SDK != "FREEBSD":
+      module event {
+        header "${GLIBC_ARCH_INCLUDE_PATH}/sys/event.h"
+        export *
+      }
+% end
       module uio {
         header "${GLIBC_ARCH_INCLUDE_PATH}/sys/uio.h"
         export *