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68 lines
1.8 KiB
68 lines
1.8 KiB
/*
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* Copyright 2025 Rockchip Electronics S.LSI Co. LTD
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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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#include "GpuSysfsReader.h"
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#include <log/log.h>
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#include <fstream>
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#include <sstream>
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#include "filesystem.h"
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#undef LOG_TAG
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#define LOG_TAG "memtrack-gpusysfsreader"
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using namespace GpuSysfsReader;
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namespace {
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uint64_t readNode(const std::string node, pid_t pid) {
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std::stringstream ss;
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if (pid)
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ss << kSysfsDevicePath << "/" << kProcessDir << "/" << pid << "/" << node;
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else
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ss << kSysfsDevicePath << "/" << node;
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const std::string path = ss.str();
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if (!filesystem::exists(filesystem::path(path))) {
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ALOGV("File not found: %s", path.c_str());
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return 0;
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}
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std::ifstream file(path.c_str());
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if (!file.is_open()) {
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ALOGW("Failed to open %s path", path.c_str());
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return 0;
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}
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uint64_t out;
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file >> out;
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file.close();
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return out;
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}
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} // namespace
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uint64_t GpuSysfsReader::getPrivateGpuMem(pid_t pid) { return readNode(kPrivateGpuMemNode, pid); }
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uint64_t GpuSysfsReader::getGpuMemTotal(pid_t pid) { return readNode(kTotalGpuMemNode, pid); }
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uint64_t GpuSysfsReader::getDmaBufGpuMem(pid_t pid) {
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auto private_size = getPrivateGpuMem(pid);
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auto gpu_total_size = getGpuMemTotal(pid);
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return gpu_total_size - private_size;
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}
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