1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <fstream> 18 #include <iostream> 19 #include <sstream> 20 #include <stdio.h> 21 #include <string> 22 #include <unistd.h> 23 24 #include <android/log.h> 25 #define ATRACE_TAG ATRACE_TAG_NNAPI 26 #include "utils/Trace.h" 27 28 int parseMemInfo(const char* name) { 29 std::ifstream meminfoStream("/proc/meminfo"); 30 if (!meminfoStream.good()) { 31 perror("Failed to open /proc/meminfo"); 32 return -1; 33 } 34 std::string line; 35 while (std::getline(meminfoStream, line)) { 36 if (line.find(name) != std::string::npos) { 37 std::istringstream lineStream(line); 38 std::string name; 39 int size; 40 lineStream >> name; 41 lineStream >> size; 42 return size; 43 } 44 } 45 std::cerr << "Failed to find " << name << " in /proc/meminfo\n"; 46 return -1; 47 } 48 49 int main(void) { 50 if (!(atrace_get_enabled_tags() & ATRACE_TAG)) { 51 std::cerr << "systrace not running, logcat output only\n"; 52 } 53 int size = 0; 54 while (true) { 55 const int newSize = parseMemInfo("ION_heap"); 56 if (newSize < 0) { 57 return newSize; 58 } 59 if (newSize != size) { 60 size = newSize; 61 std::cout << size << "\n"; 62 ATRACE_INT("ION_heap", size); 63 __android_log_print(ANDROID_LOG_INFO, "ion", "ION_heap %d", size); 64 } 65 usleep(10); 66 } 67 } 68
