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+/**
+ * Copyright (C) ARM Limited 2013. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef DRIVER_H
+#define DRIVER_H
+
+#include "mxml/mxml.h"
+
+class Counter;
+
+class Driver {
+public:
+ static Driver *getHead() { return head; }
+
+ virtual ~Driver() {}
+
+ // Returns true if this driver can manage the counter
+ virtual bool claimCounter(const Counter &counter) const = 0;
+ // Clears and disables all counters
+ virtual void resetCounters() = 0;
+ // Enables and prepares the counter for capture
+ virtual void setupCounter(Counter &counter) = 0;
+
+ // Emits available counters
+ virtual void writeCounters(mxml_node_t *root) const = 0;
+ // Emits possible dynamically generated events/counters
+ virtual void writeEvents(mxml_node_t *root) const {}
+
+ Driver *getNext() const { return next; }
+
+protected:
+ Driver ();
+
+private:
+ static Driver *head;
+ Driver *next;
+};
+
+#endif // DRIVER_H