1 files changed, 74 insertions, 0 deletions
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