From 7fad9b1d00f3ee1488ba4038d1371f6ea219f8b7 Mon Sep 17 00:00:00 2001 From: Pablo Tello Date: Wed, 14 Mar 2018 17:55:27 +0000 Subject: COMPMID-1021: CPUInfo refactoring. Removed CPUTarget in favor of the CPUModel type. CPUInfo now holds a vector of N CPUs. CPUInfo autoinitialise upon construction with 1 GENERIC CPU. CPPScheduler fills CPUInfo's vector upon construction (runtime). IScheduler has a single CPUInfo obj and ThreadInfo always gets a pointer to it (avoid copying the vector) Change-Id: I30f293258c959c87f6bac5eac8b963beb6a4d365 Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/124626 Tested-by: Jenkins Reviewed-by: Anthony Barbier --- arm_compute/runtime/CPUUtils.h | 44 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arm_compute/runtime/CPUUtils.h (limited to 'arm_compute/runtime/CPUUtils.h') diff --git a/arm_compute/runtime/CPUUtils.h b/arm_compute/runtime/CPUUtils.h new file mode 100644 index 0000000000..70211a5817 --- /dev/null +++ b/arm_compute/runtime/CPUUtils.h @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2018 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef __ARM_COMPUTE_RUNTIME_CPU_UTILS_H__ +#define __ARM_COMPUTE_RUNTIME_CPU_UTILS_H__ + +namespace arm_compute +{ +class CPUInfo; +/** This function will try to detect the CPU configuration on the system and will fill + * the cpuinfo object accordingly to reflect this. + * + * @param[out] cpuinfo @ref CPUInfo to be used to hold the system's cpu configuration. + */ +void get_cpu_configuration(CPUInfo &cpuinfo); +/** Some systems have both big and small cores, this fuction computes the minimum number of cores + * that are exactly the same on the system. To maximize performance the library attempts to process + * workloads concurrently using as many threads as big cores are available on the system. + * + * @return The minumum number of common cores. + */ +unsigned int get_threads_hint(); +} +#endif /* __ARM_COMPUTE_RUNTIME_CPU_UTILS_H__ */ -- cgit v1.2.1