mirror of
https://github.com/oatpp/oatpp.git
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79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
/***************************************************************************
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*
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* Project _____ __ ____ _ _
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* ( _ ) /__\ (_ _)_| |_ _| |_
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* )(_)( /(__)\ )( (_ _)(_ _)
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* (_____)(__)(__)(__) |_| |_|
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*
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*
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* Copyright 2018-present, Leonid Stryzhevskyi, <lganzzzo@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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***************************************************************************/
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#include "Thread.hpp"
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#if defined(_GNU_SOURCE)
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#include <pthread.h>
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#endif
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namespace oatpp { namespace concurrency {
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v_int32 Thread::setThreadAffinityToOneCpu(std::thread::native_handle_type nativeHandle, v_int32 cpuIndex) {
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return setThreadAffinityToCpuRange(nativeHandle, cpuIndex, cpuIndex);
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}
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v_int32 Thread::setThreadAffinityToCpuRange(std::thread::native_handle_type nativeHandle, v_int32 fromCpu, v_int32 toCpu) {
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#if defined(_GNU_SOURCE)
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cpu_set_t cpuset;
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CPU_ZERO(&cpuset);
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for(v_int32 i = fromCpu; i <= toCpu; i++) {
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CPU_SET(i, &cpuset);
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}
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v_int32 result = pthread_setaffinity_np(nativeHandle, sizeof(cpu_set_t), &cpuset);
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if (result != 0) {
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OATPP_LOGD("[oatpp::concurrency::Thread::assignThreadToCpu(...)]", "error code - %d", result);
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}
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return result;
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#else
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return -1;
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#endif
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}
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v_int32 Thread::calcHardwareConcurrency() {
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#if !defined(OATPP_THREAD_HARDWARE_CONCURRENCY)
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v_int32 concurrency = std::thread::hardware_concurrency();
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if(concurrency == 0) {
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OATPP_LOGD("[oatpp::concurrency:Thread::calcHardwareConcurrency()]", "Warning - failed to get hardware_concurrency. Setting hardware_concurrency=1");
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concurrency = 1;
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}
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return concurrency;
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#else
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return OATPP_THREAD_HARDWARE_CONCURRENCY;
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#endif
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}
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v_int32 Thread::getHardwareConcurrency() {
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static v_int32 concurrency = calcHardwareConcurrency();
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return concurrency;
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}
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}}
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