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hotspot/src/share/vm/gc_implementation/shared/gcPolicyCounters.hpp

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+/*
+ * Copyright 2002-2005 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.
+ *
+ */
+
+// GCPolicyCounters is a holder class for performance counters
+// that track a generation
+
+class GCPolicyCounters: public CHeapObj {
+  friend class VMStructs;
+
+  private:
+
+    // Constant PerfData types don't need to retain a reference.
+    // However, it's a good idea to document them here.
+    // PerfStringConstant*     _name;
+    // PerfStringConstant*     _collector_size;
+    // PerfStringConstant*     _generation_size;
+
+    PerfVariable*     _tenuring_threshold;
+    PerfVariable*     _desired_survivor_size;
+
+    const char* _name_space;
+
+ public:
+
+  enum Name {
+    NONE,
+    GCPolicyCountersKind,
+    GCAdaptivePolicyCountersKind,
+    PSGCAdaptivePolicyCountersKind,
+    CMSGCAdaptivePolicyCountersKind
+  };
+
+  GCPolicyCounters(const char* name, int collectors, int generations);
+
+    inline PerfVariable* tenuring_threshold() const  {
+      return _tenuring_threshold;
+    }
+
+    inline PerfVariable* desired_survivor_size() const  {
+      return _desired_survivor_size;
+    }
+
+    const char* name_space() const { return _name_space; }
+
+    virtual void update_counters() {}
+
+    virtual GCPolicyCounters::Name kind() const {
+      return GCPolicyCounters::GCPolicyCountersKind;
+    }
+};