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
parseMemInfo(const char * name)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
main(void)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