auto import from //depot/cupcake/@135843
diff --git a/libs/surfaceflinger/CPUGauge.h b/libs/surfaceflinger/CPUGauge.h
new file mode 100644
index 0000000..5bb53c0
--- /dev/null
+++ b/libs/surfaceflinger/CPUGauge.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_CPUGAUGE_H
+#define ANDROID_CPUGAUGE_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Timers.h>
+
+#include <ui/SurfaceComposerClient.h>
+
+namespace android {
+
+class CPUGauge : public Thread
+{
+public:
+ CPUGauge( const sp<ISurfaceComposer>& composer,
+ nsecs_t interval=s2ns(1),
+ int clock=SYSTEM_TIME_THREAD,
+ int refclock=SYSTEM_TIME_MONOTONIC);
+
+ ~CPUGauge();
+
+ const sp<SurfaceComposerClient>& session() const;
+
+ void sample();
+
+ inline float cpuUsage() const { return mCpuUsage; }
+ inline float idle() const { return mIdleTime; }
+
+private:
+ virtual void onFirstRef();
+ virtual status_t readyToRun();
+ virtual bool threadLoop();
+
+ Mutex mLock;
+
+ sp<SurfaceComposerClient> mSession;
+
+ const nsecs_t mInterval;
+ const int mClock;
+ const int mRefClock;
+
+ nsecs_t mReferenceTime;
+ nsecs_t mReferenceWorkingTime;
+ float mCpuUsage;
+ nsecs_t mRefIdleTime;
+ float mIdleTime;
+ FILE* mFd;
+};
+
+
+}; // namespace android
+
+#endif // ANDROID_CPUGAUGE_H