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Diffstat (limited to 'src/runtime/MEMUtils.cpp')
-rw-r--r-- | src/runtime/MEMUtils.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/runtime/MEMUtils.cpp b/src/runtime/MEMUtils.cpp new file mode 100644 index 0000000000..ad00070935 --- /dev/null +++ b/src/runtime/MEMUtils.cpp @@ -0,0 +1,111 @@ +/* + * 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 |