[HB] Add a "blob" manager
diff --git a/src/hb-refcount-private.h b/src/hb-refcount-private.h
new file mode 100644
index 0000000..e8acb25
--- /dev/null
+++ b/src/hb-refcount-private.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright © 2007 Chris Wilson
+ *
+ * This is part of HarfBuzz, an OpenType Layout engine library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Contributor(s):
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifndef HB_REFCOUNT_PRIVATE_H
+#define HB_REFCOUNT_PRIVATE_H
+
+typedef int hb_atomic_int_t;
+
+/* Encapsulate operations on the object's reference count */
+typedef struct {
+ hb_atomic_int_t ref_count;
+} hb_reference_count_t;
+
+/* XXX add real atomic ops */
+#define _hb_reference_count_inc(RC) ((RC).ref_count++)
+#define _hb_reference_count_dec_and_test(RC) ((RC).ref_count-- == 1)
+
+#define HB_REFERENCE_COUNT_INIT(RC, VALUE) ((RC).ref_count = (VALUE))
+
+#define HB_REFERENCE_COUNT_GET_VALUE(RC) ((RC).ref_count+0)
+#define HB_REFERENCE_COUNT_SET_VALUE(RC, VALUE) ((RC).ref_count = (VALUE), 0)
+
+#define HB_REFERENCE_COUNT_INVALID_VALUE ((hb_atomic_int_t) -1)
+#define HB_REFERENCE_COUNT_INVALID {HB_REFERENCE_COUNT_INVALID_VALUE}
+
+#define HB_REFERENCE_COUNT_IS_INVALID(RC) (HB_REFERENCE_COUNT_GET_VALUE (RC) == HB_REFERENCE_COUNT_INVALID_VALUE)
+
+#define HB_REFERENCE_COUNT_HAS_REFERENCE(RC) (HB_REFERENCE_COUNT_GET_VALUE (RC) > 0)
+
+#endif /* HB_REFCOUNT_PRIVATE_H */
