| /* |
| * 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. |
| */ |
| #include "arm_compute/core/CPP/CPPTypes.h" |
| #include "arm_compute/core/Error.h" |
| #include "support/ToolchainSupport.h" |
| |
| #ifndef BARE_METAL |
| #include <fstream> |
| #include <regex> |
| #include <sstream> |
| #endif // ifndef BARE_METAL |
| |
| namespace |
| { |
| void parse_mem_info(size_t &total, size_t &free, size_t &buffer) |
| { |
| free = 0; |
| total = 0; |
| buffer = 0; |
| #ifndef BARE_METAL |
| size_t memcache = 0; |
| size_t memfree = 0; |
| std::ifstream meminfo_f; |
| meminfo_f.open("/proc/meminfo", std::ios::in); |
| if(meminfo_f.is_open()) |
| { |
| std::stringstream str_stream; |
| str_stream << meminfo_f.rdbuf(); |
| const std::string str = str_stream.str(); |
| try |
| { |
| std::smatch match; |
| if(std::regex_search(str, match, std::regex("MemTotal: (.*)kB")) && match.size() > 1) |
| { |
| const std::string result = match.str(1); |
| total = std::stoul(result, nullptr, 0); |
| } |
| if(std::regex_search(str, match, std::regex("MemFree: (.*)kB")) && match.size() > 1) |
| { |
| const std::string result = match.str(1); |
| memfree = std::stoul(result, nullptr, 0); |
| } |
| if(std::regex_search(str, match, std::regex("Buffers: (.*)kB")) && match.size() > 1) |
| { |
| const std::string result = match.str(1); |
| buffer = std::stoul(result, nullptr, 0); |
| } |
| if(std::regex_search(str, match, std::regex("Cached: (.*)kB")) && match.size() > 1) |
| { |
| const std::string result = match.str(1); |
| memcache = std::stoul(result, nullptr, 0); |
| } |
| free = memfree + (buffer + memcache); |
| } |
| catch(std::regex_error &e) |
| { |
| // failed parsing /proc/meminfo |
| // return 0s on all fields |
| } |
| } |
| #endif // ifndef BARE_METAL |
| } |
| |
| } // namespace |
| |
| namespace arm_compute |
| { |
| void MEMInfo::set_policy(MemoryPolicy policy) |
| { |
| _policy = policy; |
| } |
| |
| MemoryPolicy MEMInfo::get_policy() |
| { |
| return _policy; |
| } |
| MemoryPolicy MEMInfo::_policy = { MemoryPolicy::NORMAL }; |
| |
| MEMInfo::MEMInfo() |
| : _total(0), _free(0), _buffer(0) |
| { |
| parse_mem_info(_total, _free, _buffer); |
| } |
| |
| size_t MEMInfo::get_total_in_kb() const |
| { |
| return _total; |
| } |
| |
| } // namespace arm_compute |