Index: include/jvm.h
===================================================================
--- include/jvm.h	(revision 129428)
+++ include/jvm.h	(working copy)
@@ -412,6 +412,10 @@ void _Jv_SetInitialHeapSize (const char 
    _Jv_GCSetMaximumHeapSize.  */
 void _Jv_SetMaximumHeapSize (const char *arg);
 
+/* External interface for setting the GC_free_space_divisor.  Calls
+   GC_set_free_space_divisor and returns the old value.  */
+int _Jv_SetGCFreeSpaceDivisor (int div);
+
 /* Free the method cache, if one was allocated.  This is only called
    during thread deregistration.  */
 void _Jv_FreeMethodCache ();
Index: boehm.cc
===================================================================
--- boehm.cc	(revision 129428)
+++ boehm.cc	(working copy)
@@ -465,6 +465,12 @@ _Jv_GCSetMaximumHeapSize (size_t size)
   GC_set_max_heap_size ((GC_word) size);
 }
 
+int
+_Jv_SetGCFreeSpaceDivisor (int div)
+{
+  return (int)GC_set_free_space_divisor ((GC_word)div);
+}
+
 void
 _Jv_DisableGC (void)
 {