70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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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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#define LOG_TAG "IonWatcher"
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#include <android/log.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include <string>
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#define ATRACE_TAG ATRACE_TAG_NNAPI
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#include <utils/Trace.h>
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int parseMemInfo(const char* name) {
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std::ifstream meminfoStream("/proc/meminfo");
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if (!meminfoStream.good()) {
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perror("Failed to open /proc/meminfo");
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return -1;
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}
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std::string line;
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while (std::getline(meminfoStream, line)) {
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if (line.find(name) != std::string::npos) {
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std::istringstream lineStream(line);
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std::string name;
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int size;
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lineStream >> name;
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lineStream >> size;
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return size;
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}
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}
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std::cerr << "Failed to find " << name << " in /proc/meminfo\n";
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return -1;
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}
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int main(void) {
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if (!(atrace_get_enabled_tags() & ATRACE_TAG)) {
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std::cerr << "systrace not running, logcat output only\n";
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}
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int size = 0;
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while (true) {
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const int newSize = parseMemInfo("ION_heap");
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if (newSize < 0) {
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return newSize;
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}
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if (newSize != size) {
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size = newSize;
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std::cout << size << "\n";
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ATRACE_INT("ION_heap", size);
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__android_log_print(ANDROID_LOG_INFO, "ion", "ION_heap %d", size);
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}
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usleep(10);
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}
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}
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