diff options
Diffstat (limited to 'src/libstd/managed.rs')
| -rw-r--r-- | src/libstd/managed.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/libstd/managed.rs b/src/libstd/managed.rs index 57230b2fd24..a27c8aa4a76 100644 --- a/src/libstd/managed.rs +++ b/src/libstd/managed.rs @@ -17,6 +17,13 @@ use ptr::to_unsafe_ptr; pub static RC_MANAGED_UNIQUE : uint = (-2) as uint; pub static RC_IMMORTAL : uint = 0x77777777; +/// Returns the refcount of a shared box (as just before calling this) +#[inline] +pub fn refcount<T>(t: @T) -> uint { + use unstable::raw::Repr; + unsafe { (*t.repr()).ref_count } +} + /// Determine if two shared boxes point to the same object #[inline] pub fn ptr_eq<T>(a: @T, b: @T) -> bool { |