Merged Whippet into libguile/whippet

libguile/whippet/api/gc-allocation-kind.h

@@ -0,0 +1,19 @@
+#ifndef GC_ALLOCATION_KIND_H
+#define GC_ALLOCATION_KIND_H
+
+enum gc_allocation_kind {
+  // An object whose type can be inspected at run-time based on its contents,
+  // and whose fields be traced via the gc_trace_object procedure.
+  GC_ALLOCATION_TAGGED,
+  // Like GC_ALLOCATION_TAGGED, but not containing any fields that reference
+  // GC-managed objects.  The GC may choose to handle these specially.
+  GC_ALLOCATION_TAGGED_POINTERLESS,
+  // A raw allocation whose type cannot be inspected at trace-time, and whose
+  // fields should be traced conservatively.
+  GC_ALLOCATION_UNTAGGED_CONSERVATIVE,
+  // A raw allocation whose type cannot be inspected at trace-time, but
+  // containing no fields that reference GC-managed objects.
+  GC_ALLOCATION_UNTAGGED_POINTERLESS
+};
+
+#endif // GC_ALLOCATION_KIND_H