1 files changed, 22 insertions, 0 deletions
diff --git a/link_darwin.go b/link_darwin.go
new file mode 100644
index 0000000..c1d1a20
--- /dev/null
+++ b/link_darwin.go
@@ -0,0 +1,22 @@
+// 13 december 2015
+
+package ui
+
+// #cgo LDFLAGS: -L${SRCDIR} -lui -framework CoreFoundation -lpthread
+// #include <CoreFoundation/CoreFoundation.h>
+// #include <pthread.h>
+// extern void _CFRunLoopSetCurrent(CFRunLoopRef);
+// extern pthread_t _CFMainPThread;
+import "C"
+
+// OS X cares very deeply if we don't run on the very first thread the OS creates
+// why? who knows. it's stupid and completely indefensible. let's use undocumented APIs to get around it.
+// apple uses them too: http://www.opensource.apple.com/source/kext_tools/kext_tools-19.2/kextd_main.c?txt
+// apple HAS SUGGESTED them too: http://lists.apple.com/archives/darwin-development/2002/Sep/msg00250.html
+// gstreamer uses them too: http://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/sys/osxvideo/osxvideosink.m
+func ensureMainThread() {
+	// TODO set to nil like the apple code?
+	C._CFRunLoopSetCurrent(C.CFRunLoopGetMain())
+	// TODO is this part necessary?
+	C._CFMainPThread = C.pthread_self()
+}