diff -r 000000000000 -r 7f656887cf89 libraries/extrabtrace/src/sampler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/extrabtrace/src/sampler.h	Wed Jun 23 15:52:26 2010 +0100
@@ -0,0 +1,43 @@
+// sampler.h
+// 
+// Copyright (c) 2010 Accenture. All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+// 
+// Initial Contributors:
+// Accenture - Initial contribution
+//
+#ifndef EXTRABTRACE_SAMPLER_H
+#define EXTRABTRACE_SAMPLER_H
+
+#include <fshell/extrabtracek.h>
+#include <kernel.h>
+
+NONSHARABLE_CLASS(DCpuSampler) : public DBase
+	{
+public:
+	DCpuSampler();
+	~DCpuSampler();
+
+	void SetCpuUsageSampling(MExtraBtrace::TCpuUsageCallback aCallbackFn);
+	void SetProfilingSampling(TBool aEnabled);
+
+private:
+	static void Sample(TAny* aPtr);
+	void DoSample();
+	void Usample(NThread* aThread);
+	void SettingsChanged();
+	TBool ShouldRun() const;
+
+private:
+	NThread* iContext;
+	NTimer iTimer;
+	TInt iTimerHeartbeat;
+	TUint* iIntStackTop; // I don't understand this, but whover wrote it originally hopefully did!
+	TBool iProfiling;
+	MExtraBtrace::TCpuUsageCallback iCpuUsageCallbackFn;
+	};
+
+#endif