Android Build Tools

Android/android-ndk-r27d/sources/android/ndk_helper/perfMonitor.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2013 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.
+ */
+
+#pragma once
+
+#include <jni.h>
+#include <errno.h>
+#include <time.h>
+#include "JNIHelper.h"
+
+namespace ndk_helper
+{
+
+const int32_t NUM_SAMPLES = 100;
+
+/******************************************************************
+ * Helper class for a performance monitoring and get current tick time
+ */
+class PerfMonitor
+{
+private:
+    float current_FPS_;
+    time_t tv_last_sec_;
+
+    double last_tick_;
+    int32_t tickindex_;
+    double ticksum_;
+    double ticklist_[NUM_SAMPLES];
+
+    double UpdateTick( double current_tick );
+public:
+    PerfMonitor();
+    virtual ~PerfMonitor();
+
+    bool Update( float &fFPS );
+
+    static double GetCurrentTime()
+    {
+        struct timeval time;
+        gettimeofday( &time, NULL );
+        double ret = time.tv_sec + time.tv_usec * 1.0 / 1000000.0;
+        return ret;
+    }
+};
+
+}   //namespace ndkHelper