1 /* 2 * Copyright (c) 2018-2020 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 #ifndef ARM_COMPUTE_RUNTIME_CPU_UTILS_H 25 #define ARM_COMPUTE_RUNTIME_CPU_UTILS_H 26 27 namespace arm_compute 28 { 29 class CPUInfo; 30 31 namespace utils 32 { 33 namespace cpu 34 { 35 /** This function will try to detect the CPU configuration on the system and will fill 36 * the cpuinfo object accordingly to reflect this. 37 * 38 * @param[out] cpuinfo @ref CPUInfo to be used to hold the system's cpu configuration. 39 */ 40 void get_cpu_configuration(CPUInfo &cpuinfo); 41 /** Some systems have both big and small cores, this fuction computes the minimum number of cores 42 * that are exactly the same on the system. To maximize performance the library attempts to process 43 * workloads concurrently using as many threads as big cores are available on the system. 44 * 45 * @return The minumum number of common cores. 46 */ 47 unsigned int get_threads_hint(); 48 } // namespace cpu 49 } // namespace utils 50 } // namespace arm_compute 51 #endif /* ARM_COMPUTE_RUNTIME_CPU_UTILS_H */ 52