--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/gc_interface/gcCause.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2002-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+//
+// This class exposes implementation details of the various
+// collector(s), and we need to be very careful with it. If
+// use of this class grows, we should split it into public
+// and implemenation-private "causes".
+//
+
+class GCCause : public AllStatic {
+ public:
+  enum Cause {
+    /* public */
+    _java_lang_system_gc,
+    _full_gc_alot,
+    _scavenge_alot,
+    _allocation_profiler,
+    _jvmti_force_gc,
+    _gc_locker,
+    _heap_inspection,
+    _heap_dump,
+
+    /* implementation independent, but reserved for GC use */
+    _no_gc,
+    _no_cause_specified,
+    _allocation_failure,
+
+    /* implementation specific */
+
+    _tenured_generation_full,
+    _permanent_generation_full,
+
+    _cms_generation_full,
+    _cms_initial_mark,
+    _cms_final_remark,
+
+    _old_generation_expanded_on_last_scavenge,
+    _old_generation_too_full_to_scavenge,
+    _adaptive_size_policy,
+
+    _last_ditch_collection,
+    _last_gc_cause
+  };
+
+  inline static bool is_user_requested_gc(GCCause::Cause cause) {
+    return (cause == GCCause::_java_lang_system_gc ||
+            cause == GCCause::_jvmti_force_gc);
+  }
+  inline static bool is_serviceability_requested_gc(GCCause::Cause
+                                                             cause) {
+    return (cause == GCCause::_jvmti_force_gc ||
+            cause == GCCause::_heap_inspection ||
+            cause == GCCause::_heap_dump);
+  }
+  // Return a string describing the GCCause.
+  static const char* to_string(GCCause::Cause cause);
+  // Return true if the GCCause is for a full collection.
+  static bool is_for_full_collection(GCCause::Cause cause) PRODUCT_RETURN0;
+};