1 /*
2 * Copyright (C) 2019 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 <getopt.h>
18 #include <inttypes.h>
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <sys/types.h>
22 #include <unistd.h>
23
24 #include <algorithm>
25 #include <memory>
26 #include <string>
27 #include <vector>
28
29 #include <meminfo/pageacct.h>
30 #include <meminfo/procmeminfo.h>
31
32 using ::android::meminfo::ProcMemInfo;
33 using ::android::meminfo::Vma;
34
35 // Global options
36 static int32_t g_delay = 0;
37 static int32_t g_total = 2;
38 static pid_t g_pid = -1;
39
usage(int exit_status)40 [[noreturn]] static void usage(int exit_status) {
41 fprintf(stderr,
42 "%s [-d DELAY_BETWEEN_EACH_SAMPLE] [-n REFRESH_TOTAL] PID\n"
43 "-d\tdelay between each working set sample (default 0)\n"
44 "-n\ttotal number of refreshes before we exit (default 2)\n",
45 getprogname());
46
47 exit(exit_status);
48 }
49
print_header()50 static void print_header() {
51 const char* addr1 = " start end ";
52 const char* addr2 = " addr addr ";
53
54 printf("%s virtual shared shared private private\n", addr1);
55 printf("%s size RSS PSS clean dirty clean dirty swap "
56 "swapPSS",
57 addr2);
58 printf(" object\n");
59 }
60
print_divider()61 static void print_divider() {
62 printf("---------------- ---------------- ");
63 printf("--------- --------- --------- --------- --------- --------- --------- --------- "
64 "--------- ");
65 printf("------------------------------\n");
66 }
67
print_vma(const Vma & v)68 static void print_vma(const Vma& v) {
69 printf("%16" PRIx64 " %16" PRIx64 " ", v.start, v.end);
70 printf("%8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64
71 "K %8" PRIu64 "K %8" PRIu64 "K %8" PRIu64 "K ",
72 v.usage.vss / 1024, v.usage.rss / 1024, v.usage.pss / 1024, v.usage.shared_clean / 1024,
73 v.usage.shared_dirty / 1024, v.usage.private_clean / 1024, v.usage.private_dirty / 1024,
74 v.usage.swap / 1024, v.usage.swap_pss / 1024);
75 printf("%s\n", v.name.c_str());
76 }
77
same_vma(const Vma & cur,const Vma & last)78 static bool same_vma(const Vma& cur, const Vma& last) {
79 return (cur.start == last.start && cur.end == last.end && cur.name == last.name &&
80 cur.flags == last.flags && cur.offset == last.offset);
81 }
82
diff_vma_params(const Vma & cur,const Vma & last)83 static Vma diff_vma_params(const Vma& cur, const Vma& last) {
84 Vma res;
85 res.usage.shared_clean = cur.usage.shared_clean > last.usage.shared_clean
86 ? cur.usage.shared_clean - last.usage.shared_clean
87 : 0;
88 res.usage.shared_dirty = cur.usage.shared_dirty > last.usage.shared_dirty
89 ? cur.usage.shared_dirty - last.usage.shared_dirty
90 : 0;
91 res.usage.private_clean = cur.usage.private_clean > last.usage.private_clean
92 ? cur.usage.private_clean - last.usage.private_clean
93 : 0;
94 res.usage.private_dirty = cur.usage.private_dirty > last.usage.private_dirty
95 ? cur.usage.private_dirty - last.usage.private_dirty
96 : 0;
97
98 res.usage.rss = cur.usage.rss > last.usage.rss ? cur.usage.rss - last.usage.rss : 0;
99 res.usage.pss = cur.usage.pss > last.usage.pss ? cur.usage.pss - last.usage.pss : 0;
100 res.usage.uss = cur.usage.uss > last.usage.uss ? cur.usage.uss - last.usage.uss : 0;
101 res.usage.swap = cur.usage.swap > last.usage.swap ? cur.usage.swap - last.usage.swap : 0;
102 res.usage.swap_pss =
103 cur.usage.swap_pss > last.usage.swap_pss ? cur.usage.swap_pss - last.usage.swap_pss : 0;
104
105 // set vma properties to the same as the current one.
106 res.start = cur.start;
107 res.end = cur.end;
108 res.offset = cur.offset;
109 res.flags = cur.flags;
110 res.name = cur.name;
111 return res;
112 }
113
diff_workingset(std::vector<Vma> & wss,std::vector<Vma> & old,std::vector<Vma> * res)114 static void diff_workingset(std::vector<Vma>& wss, std::vector<Vma>& old, std::vector<Vma>* res) {
115 res->clear();
116 auto vma_sorter = [](const Vma& a, const Vma& b) { return a.start < b.start; };
117 std::sort(wss.begin(), wss.end(), vma_sorter);
118 std::sort(old.begin(), old.end(), vma_sorter);
119 if (old.empty()) {
120 *res = wss;
121 return;
122 }
123
124 for (auto& i : wss) {
125 bool found_same_vma = false;
126 // TODO: This is highly inefficient, fix it if it takes
127 // too long. Worst case will be system_server
128 for (auto& j : old) {
129 if (same_vma(i, j)) {
130 res->emplace_back(diff_vma_params(i, j));
131 found_same_vma = true;
132 break;
133 }
134 }
135
136 if (!found_same_vma) {
137 res->emplace_back(i);
138 }
139 }
140
141 std::sort(res->begin(), res->end(), vma_sorter);
142 return;
143 }
144
workingset()145 static int workingset() {
146 std::vector<Vma> last_wss = {};
147 std::vector<Vma> diff_wss = {};
148 uint32_t nr_refresh = 0;
149
150 while (true) {
151 std::unique_ptr<ProcMemInfo> proc_mem = std::make_unique<ProcMemInfo>(g_pid, true);
152 std::vector<Vma> wss = proc_mem->MapsWithPageIdle();
153
154 diff_workingset(wss, last_wss, &diff_wss);
155 diff_wss.erase(std::remove_if(diff_wss.begin(), diff_wss.end(),
156 [](const auto& v) { return v.usage.rss == 0; }),
157 diff_wss.end());
158 if ((nr_refresh % 5) == 0) {
159 print_header();
160 print_divider();
161 }
162
163 for (const auto& v : diff_wss) {
164 print_vma(v);
165 }
166
167 nr_refresh++;
168 if (nr_refresh == g_total) {
169 break;
170 }
171
172 last_wss = wss;
173 sleep(g_delay);
174 print_divider();
175 }
176
177 return 0;
178 }
179
main(int argc,char * argv[])180 int main(int argc, char* argv[]) {
181 struct option longopts[] = {
182 {"help", no_argument, nullptr, 'h'},
183 {0, 0, nullptr, 0},
184 };
185
186 int opt;
187 while ((opt = getopt_long(argc, argv, "d:n:h", longopts, nullptr)) != -1) {
188 switch (opt) {
189 case 'd':
190 g_delay = atoi(optarg);
191 break;
192 case 'n':
193 g_total = atoi(optarg);
194 break;
195 case 'h':
196 usage(EXIT_SUCCESS);
197 default:
198 usage(EXIT_FAILURE);
199 }
200 }
201
202 if ((argc - 1) < optind) {
203 fprintf(stderr, "Invalid arguments: Must provide <pid> at the end\n");
204 usage(EXIT_FAILURE);
205 }
206
207 g_pid = atoi(argv[optind]);
208 if (g_pid <= 0) {
209 fprintf(stderr, "Invalid process id %s\n", argv[optind]);
210 usage(EXIT_FAILURE);
211 }
212
213 if (!::android::meminfo::PageAcct::KernelHasPageIdle()) {
214 fprintf(stderr, "Missing support for Idle page tracking in the kernel\n");
215 return 0;
216 }
217
218 return workingset();
219 }
220