--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/services/psMemoryPool.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2007 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.
+ *
+ */
+
+class PSGenerationPool : public CollectedMemoryPool {
+private:
+  PSOldGen* _gen;
+
+public:
+  PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold);
+  PSGenerationPool(PSPermGen* pool, const char* name, PoolType type, bool support_usage_threshold);
+
+  MemoryUsage get_memory_usage();
+  size_t used_in_bytes()              { return _gen->used_in_bytes(); }
+  size_t max_size() const             { return _gen->reserved().byte_size(); }
+};
+
+class EdenMutableSpacePool : public CollectedMemoryPool {
+private:
+  PSYoungGen*   _gen;
+  MutableSpace* _space;
+
+public:
+  EdenMutableSpacePool(PSYoungGen* gen,
+                       MutableSpace* space,
+                       const char* name,
+                       PoolType type,
+                       bool support_usage_threshold);
+
+  MutableSpace* space()                     { return _space; }
+  MemoryUsage get_memory_usage();
+  size_t used_in_bytes()                    { return space()->used_in_bytes(); }
+  size_t max_size() const {
+    // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces
+    return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes();
+  }
+};
+
+class SurvivorMutableSpacePool : public CollectedMemoryPool {
+private:
+  PSYoungGen*   _gen;
+
+public:
+  SurvivorMutableSpacePool(PSYoungGen* gen,
+                           const char* name,
+                           PoolType type,
+                           bool support_usage_threshold);
+
+  MemoryUsage get_memory_usage();
+
+  size_t used_in_bytes() {
+    return _gen->from_space()->used_in_bytes();
+  }
+  size_t committed_in_bytes() {
+    return _gen->from_space()->capacity_in_bytes();
+  }
+  size_t max_size() const {
+    // Return current committed size of the from-space
+    return _gen->from_space()->capacity_in_bytes();
+  }
+};