1 #ifndef _TCUCPUWARMUP_HPP 2 #define _TCUCPUWARMUP_HPP 3 /*------------------------------------------------------------------------- 4 * drawElements Quality Program Tester Core 5 * ---------------------------------------- 6 * 7 * Copyright 2014 The Android Open Source Project 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); 10 * you may not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 * 21 *//*! 22 * \file 23 * \brief CPU warm-up utility, used to counteract CPU throttling. 24 *//*--------------------------------------------------------------------*/ 25 26 namespace tcu 27 { 28 29 //! Does some dummy calculations to try and get the CPU working at full speed. 30 void warmupCPU (void); 31 32 namespace warmupCPUInternal 33 { 34 35 // \note Used in an attempt to prevent compiler from doing optimizations. Not supposed to be touched elsewhere. 36 37 class Dummy 38 { 39 public: 40 Dummy (void) : m_v(new float) {} 41 ~Dummy (void) { delete m_v; } 42 43 volatile float* volatile m_v; 44 }; 45 46 extern volatile Dummy g_dummy; 47 48 }; 49 50 } // tcu 51 52 #endif // _TCUCPUWARMUP_HPP 53
