+ free(shared);
+}
+
+
+/**
+ * Decrement shared state object reference count and potentially free it
+ * and all children structures.
+ *
+ * \param ctx GL context.
+ * \param shared shared state pointer.
+ *
+ * \sa free_shared_state().
+ */
+void
+_mesa_release_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
+{
+ GLint RefCount;
+
+ _glthread_LOCK_MUTEX(shared->Mutex);
+ RefCount = --shared->RefCount;
+ _glthread_UNLOCK_MUTEX(shared->Mutex);
+
+ assert(RefCount >= 0);
+
+ if (RefCount == 0) {
+ /* free shared state */
+ free_shared_state( ctx, shared );
+ }