--- old/src/share/vm/gc_interface/gcCause.hpp	2012-05-08 16:12:34.852398600 +0200
+++ new/src/share/vm/gc_interface/gcCause.hpp	2012-05-08 16:12:32.906287300 +0200
@@ -88,4 +88,35 @@
   static const char* to_string(GCCause::Cause cause);
 };
 
+// Helper class for doing logging that includes the GC Cause
+// as a string.
+class GCCauseString : StackObj {
+ private:
+   static const int length = 128;
+   char buffer[length];
+   int position;
+
+ public:
+   GCCauseString(const char* prefix, GCCause::Cause cause) {
+     if (PrintGCCause) {
+      position = jio_snprintf(buffer, length, "%s (%s)", prefix, GCCause::to_string(cause));
+     } else {
+      position = jio_snprintf(buffer, length, "%s", prefix);
+     }
+     assert(position > 0 && position <= length,
+       err_msg("Need to increase the buffer size in GCCauseString? %d", position));
+   }
+
+   GCCauseString& append(const char* str) {
+     position += jio_snprintf(buffer + position, length - position, "%", str);
+     assert(position > 0 && position <= length,
+       err_msg("Need to increase the buffer size in GCCauseString? %d", position));
+     return *this;
+   }
+
+   operator const char*() {
+     return buffer;
+   }
+};
+
 #endif // SHARE_VM_GC_INTERFACE_GCCAUSE_HPP