bind: pin Go objects while incrementing their reference count

When passing a refnum across the language barrier there is a small
window where a proxy object itself can be garbage collected, its
reference count go to 0 and the object be gone when the refnum
is dereferenced on the other side.

In Go the proxy object is pinned with runtime.KeepAlive. This CL
implements the same mechanism in Java by passing the proxy object to
native code, ensuring the Java GC can't reclaim it during the call.

Change-Id: I23824439012eb00f90d729f59d4846999f24f01f
Reviewed-by: Hyang-Ah Hana Kim <>
16 files changed
tree: e33a65c8dfc34b7ddd1869ff925f16cd1d927a8b
  1. .gitattributes
  2. .gitignore
  9. app/
  10. asset/
  11. bind/
  12. cmd/
  13. codereview.cfg
  14. doc/
  15. event/
  16. example/
  17. exp/
  18. geom/
  19. gl/
  20. internal/
  21. misc/
  22. testdata/

Go support for Mobile devices

The Go mobile repository holds packages and build tools for using Go on mobile platforms.

Package documentation as a starting point:

Caution image

The Go Mobile project is experimental. Use this at your own risk. While we are working hard to improve it, neither Google nor the Go team can provide end-user support.

This is early work and installing the build system requires Go 1.5. Follow the instructions on to install the gomobile command, build the basic and the bind example apps.

Contributions to Go are appreciated. See