Add ClientInfo...

core/cross/client_info.h

Index: core/cross/client_info.h
===================================================================
--- core/cross/client_info.h	(revision 0)
+++ core/cross/client_info.h	(revision 0)
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+// This file defines the ClientInfo class.
+
+#ifndef O3D_CORE_CROSS_CLIENT_INFO_H_
+#define O3D_CORE_CROSS_CLIENT_INFO_H_
+
+#include "core/cross/types.h"
+#include "core/cross/service_locator.h"
+#include "core/cross/service_implementation.h"
+
+namespace o3d {
+
+// This class is used to report infomation about the client.
+class ClientInfo {
+ public:
+  ClientInfo()
+      : num_objects_(0),
+        texture_memory_used_(0),
+        buffer_memory_used_(0),
+        software_renderer_(false) {
+  }
+
+  // The number of objects the client is currently tracking.
+  int num_objects() const {
+    return num_objects_;
+  }
+
+  // The amount of texture memory used.
+  int texture_memory_used() const {
+    return texture_memory_used_;
+  };
+
+  // The amount of texture memory used.
+  int buffer_memory_used() const {
+    return buffer_memory_used_;
+  }
+
+  // Whether or not we are using the software renderer.
+  bool software_renderer() const {
+    return software_renderer_;
+  }
+
+ private:
+  friend class ClientInfoManager;
+
+  int num_objects_;
+  int texture_memory_used_;
+  int buffer_memory_used_;
+  bool software_renderer_;
+};
+
+// A class to manage the client info so other classes can easily look it up.
+class ClientInfoManager {
+ public:
+  static const InterfaceId kInterfaceId;
+
+  explicit ClientInfoManager(ServiceLocator* service_locator);
+
+  const ClientInfo& client_info();
+
+  // Adds or subtracts from the amount of texture memory used.
+  void AdjustTextureMemoryUsed(int amount) {
+    client_info_.texture_memory_used_ += amount;
+    DCHECK(client_info_.texture_memory_used_ >= 0);
+  }
+
+  // Adds or subtracts from the amount of texture memory used.
+  void AdjustBufferMemoryUsed(int amount) {
+    client_info_.buffer_memory_used_ += amount;
+    DCHECK(client_info_.buffer_memory_used_ >= 0);
+  }
+
+  void SetSoftwareRenderer(bool used) {
+    client_info_.software_renderer_ = used;
+  }
+
+private:
+  ServiceImplementation<ClientInfoManager> service_;
+
+  ClientInfo client_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClientInfoManager);
+};
+
+}  // namespace o3d
+
+#endif  // O3D_CORE_CROSS_CLIENT_INFO_H_