OLD | NEW |
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/process_util.h" | 5 #include "base/process_util.h" |
6 | 6 |
| 7 #include <ctype.h> |
7 #include <dirent.h> | 8 #include <dirent.h> |
8 #include <malloc.h> | 9 #include <dlfcn.h> |
| 10 #include <errno.h> |
| 11 #include <fcntl.h> |
9 #include <sys/time.h> | 12 #include <sys/time.h> |
10 #include <sys/types.h> | 13 #include <sys/types.h> |
| 14 #include <sys/wait.h> |
| 15 #include <time.h> |
11 #include <unistd.h> | 16 #include <unistd.h> |
12 | 17 |
13 #include "base/file_util.h" | 18 #include "base/file_util.h" |
14 #include "base/logging.h" | 19 #include "base/logging.h" |
15 #include "base/string_number_conversions.h" | 20 #include "base/string_number_conversions.h" |
16 #include "base/string_split.h" | 21 #include "base/string_split.h" |
17 #include "base/string_tokenizer.h" | 22 #include "base/string_tokenizer.h" |
18 #include "base/string_util.h" | 23 #include "base/string_util.h" |
19 #include "base/sys_info.h" | 24 #include "base/sys_info.h" |
20 #include "base/threading/thread_restrictions.h" | 25 #include "base/threading/thread_restrictions.h" |
21 | 26 |
22 namespace { | 27 namespace { |
23 | 28 |
24 enum ParsingState { | 29 enum ParsingState { |
25 KEY_NAME, | 30 KEY_NAME, |
26 KEY_VALUE | 31 KEY_VALUE |
27 }; | 32 }; |
28 | 33 |
29 const char kProcDir[] = "/proc"; | 34 const char kProcDir[] = "/proc"; |
30 const char kStatFile[] = "stat"; | |
31 | 35 |
32 // Returns a FilePath to "/proc/pid". | 36 // Returns a FilePath to "/proc/pid". |
33 FilePath GetProcPidDir(pid_t pid) { | 37 FilePath GetProcPidDir(pid_t pid) { |
34 return FilePath(kProcDir).Append(base::Int64ToString(pid)); | 38 return FilePath(kProcDir).Append(base::Int64ToString(pid)); |
35 } | 39 } |
36 | 40 |
37 // Fields from /proc/<pid>/stat, 0-based. See man 5 proc. | 41 // Reads /proc/<pid>/stat and populates |proc_stats| with the values split by |
38 // If the ordering ever changes, carefully review functions that use these | 42 // spaces. Returns true if successful. |
39 // values. | 43 bool GetProcStats(pid_t pid, std::vector<std::string>* proc_stats) { |
40 enum ProcStatsFields { | |
41 VM_COMM = 1, // Filename of executable, without parentheses. | |
42 VM_STATE = 2, // Letter indicating the state of the process. | |
43 VM_PPID = 3, // PID of the parent. | |
44 VM_PGRP = 4, // Process group id. | |
45 VM_UTIME = 13, // Time scheduled in user mode in clock ticks. | |
46 VM_STIME = 14, // Time scheduled in kernel mode in clock ticks. | |
47 VM_VSIZE = 22, // Virtual memory size in bytes. | |
48 VM_RSS = 23, // Resident Set Size in pages. | |
49 }; | |
50 | |
51 // Reads /proc/<pid>/stat into |buffer|. Returns true if successful. | |
52 bool ReadProcStats(pid_t pid, std::string* buffer) { | |
53 // Synchronously reading files in /proc is safe. | 44 // Synchronously reading files in /proc is safe. |
54 base::ThreadRestrictions::ScopedAllowIO allow_io; | 45 base::ThreadRestrictions::ScopedAllowIO allow_io; |
55 | 46 |
56 FilePath stat_file = GetProcPidDir(pid).Append(kStatFile); | 47 FilePath stat_file = GetProcPidDir(pid).Append("stat"); |
57 if (!file_util::ReadFileToString(stat_file, buffer)) { | 48 std::string mem_stats; |
58 DLOG(WARNING) << "Failed to get process stats."; | 49 if (!file_util::ReadFileToString(stat_file, &mem_stats)) |
59 return false; | 50 return false; |
60 } | 51 base::SplitString(mem_stats, ' ', proc_stats); |
61 return true; | 52 return true; |
62 } | 53 } |
63 | 54 |
64 // Takes |stats_data| and populates |proc_stats| with the values split by | |
65 // spaces. Taking into account the 2nd field may, in itself, contain spaces. | |
66 // Returns true if successful. | |
67 bool ParseProcStats(const std::string& stats_data, | |
68 std::vector<std::string>* proc_stats) { | |
69 // The stat file is formatted as: | |
70 // pid (process name) data1 data2 .... dataN | |
71 // Look for the closing paren by scanning backwards, to avoid being fooled by | |
72 // processes with ')' in the name. | |
73 size_t open_parens_idx = stats_data.find(" ("); | |
74 size_t close_parens_idx = stats_data.rfind(") "); | |
75 if (open_parens_idx == std::string::npos || | |
76 close_parens_idx == std::string::npos || | |
77 open_parens_idx > close_parens_idx) { | |
78 NOTREACHED(); | |
79 return false; | |
80 } | |
81 open_parens_idx++; | |
82 | |
83 proc_stats->clear(); | |
84 // PID. | |
85 proc_stats->push_back(stats_data.substr(0, open_parens_idx)); | |
86 // Process name without parentheses. | |
87 proc_stats->push_back( | |
88 stats_data.substr(open_parens_idx + 1, | |
89 close_parens_idx - (open_parens_idx + 1))); | |
90 | |
91 // Split the rest. | |
92 std::vector<std::string> other_stats; | |
93 base::SplitString(stats_data.substr(close_parens_idx + 2), ' ', &other_stats); | |
94 for (size_t i = 0; i < other_stats.size(); ++i) | |
95 proc_stats->push_back(other_stats[i]); | |
96 return true; | |
97 } | |
98 | |
99 // Reads the |field_num|th field from |proc_stats|. Returns 0 on failure. | |
100 // This version does not handle the first 3 values, since the first value is | |
101 // simply |pid|, and the next two values are strings. | |
102 size_t GetProcStatsFieldAsInt(const std::vector<std::string>& proc_stats, | |
103 ProcStatsFields field_num) { | |
104 if (field_num < VM_PPID) { | |
105 NOTREACHED(); | |
106 return 0; | |
107 } | |
108 | |
109 if (proc_stats.size() > static_cast<size_t>(field_num)) { | |
110 size_t value; | |
111 if (base::StringToUint64(proc_stats[field_num], &value)) | |
112 return value; | |
113 } | |
114 NOTREACHED(); | |
115 return 0; | |
116 } | |
117 | |
118 // Convenience wrapper around GetProcStatsFieldAsInt(), ParseProcStats() and | |
119 // ReadProcStats(). See GetProcStatsFieldAsInt() for details. | |
120 size_t ReadProcStatsAndGetFieldAsInt(pid_t pid, ProcStatsFields field_num) { | |
121 std::string stats_data; | |
122 if (!ReadProcStats(pid, &stats_data)) | |
123 return 0; | |
124 std::vector<std::string> proc_stats; | |
125 if (!ParseProcStats(stats_data, &proc_stats)) | |
126 return 0; | |
127 return GetProcStatsFieldAsInt(proc_stats, field_num); | |
128 } | |
129 | |
130 // Reads the |field_num|th field from |proc_stats|. | |
131 // Returns an empty string on failure. | |
132 // This version only handles VM_COMM and VM_STATE, which are the only fields | |
133 // that are strings. | |
134 std::string GetProcStatsFieldAsString( | |
135 const std::vector<std::string>& proc_stats, | |
136 ProcStatsFields field_num) { | |
137 if (field_num < VM_COMM || field_num > VM_STATE) { | |
138 NOTREACHED(); | |
139 return ""; | |
140 } | |
141 | |
142 if (proc_stats.size() > static_cast<size_t>(field_num)) | |
143 return proc_stats[field_num]; | |
144 | |
145 NOTREACHED(); | |
146 return 0; | |
147 } | |
148 | |
149 // Reads /proc/<pid>/cmdline and populates |proc_cmd_line_args| with the command | 55 // Reads /proc/<pid>/cmdline and populates |proc_cmd_line_args| with the command |
150 // line arguments. Returns true if successful. | 56 // line arguments. Returns true if successful. |
151 // Note: /proc/<pid>/cmdline contains command line arguments separated by single | 57 // Note: /proc/<pid>/cmdline contains command line arguments separated by single |
152 // null characters. We tokenize it into a vector of strings using '\0' as a | 58 // null characters. We tokenize it into a vector of strings using '\0' as a |
153 // delimiter. | 59 // delimiter. |
154 bool GetProcCmdline(pid_t pid, std::vector<std::string>* proc_cmd_line_args) { | 60 bool GetProcCmdline(pid_t pid, std::vector<std::string>* proc_cmd_line_args) { |
155 // Synchronously reading files in /proc is safe. | 61 // Synchronously reading files in /proc is safe. |
156 base::ThreadRestrictions::ScopedAllowIO allow_io; | 62 base::ThreadRestrictions::ScopedAllowIO allow_io; |
157 | 63 |
158 FilePath cmd_line_file = GetProcPidDir(pid).Append("cmdline"); | 64 FilePath cmd_line_file = GetProcPidDir(pid).Append("cmdline"); |
159 std::string cmd_line; | 65 std::string cmd_line; |
160 if (!file_util::ReadFileToString(cmd_line_file, &cmd_line)) | 66 if (!file_util::ReadFileToString(cmd_line_file, &cmd_line)) |
161 return false; | 67 return false; |
162 std::string delimiters; | 68 std::string delimiters; |
163 delimiters.push_back('\0'); | 69 delimiters.push_back('\0'); |
164 Tokenize(cmd_line, delimiters, proc_cmd_line_args); | 70 Tokenize(cmd_line, delimiters, proc_cmd_line_args); |
165 return true; | 71 return true; |
166 } | 72 } |
167 | 73 |
168 // Take a /proc directory entry named |d_name|, and if it is the directory for | |
169 // a process, convert it to a pid_t. | |
170 // Returns 0 on failure. | |
171 // e.g. /proc/self/ will return 0, whereas /proc/1234 will return 1234. | |
172 pid_t ProcDirSlotToPid(const char* d_name) { | |
173 int i; | |
174 for (i = 0; i < NAME_MAX && d_name[i]; ++i) { | |
175 if (!IsAsciiDigit(d_name[i])) { | |
176 return 0; | |
177 } | |
178 } | |
179 if (i == NAME_MAX) | |
180 return 0; | |
181 | |
182 // Read the process's command line. | |
183 pid_t pid; | |
184 std::string pid_string(d_name); | |
185 if (!base::StringToInt(pid_string, &pid)) { | |
186 NOTREACHED(); | |
187 return 0; | |
188 } | |
189 return pid; | |
190 } | |
191 | |
192 // Get the total CPU of a single process. Return value is number of jiffies | 74 // Get the total CPU of a single process. Return value is number of jiffies |
193 // on success or -1 on error. | 75 // on success or -1 on error. |
194 int GetProcessCPU(pid_t pid) { | 76 int GetProcessCPU(pid_t pid) { |
| 77 // Synchronously reading files in /proc is safe. |
| 78 base::ThreadRestrictions::ScopedAllowIO allow_io; |
| 79 |
195 // Use /proc/<pid>/task to find all threads and parse their /stat file. | 80 // Use /proc/<pid>/task to find all threads and parse their /stat file. |
196 FilePath task_path = GetProcPidDir(pid).Append("task"); | 81 FilePath path = GetProcPidDir(pid).Append("task"); |
197 | 82 |
198 DIR* dir = opendir(task_path.value().c_str()); | 83 DIR* dir = opendir(path.value().c_str()); |
199 if (!dir) { | 84 if (!dir) { |
200 DPLOG(ERROR) << "opendir(" << task_path.value() << ")"; | 85 DPLOG(ERROR) << "opendir(" << path.value() << ")"; |
201 return -1; | 86 return -1; |
202 } | 87 } |
203 | 88 |
204 int total_cpu = 0; | 89 int total_cpu = 0; |
205 while (struct dirent* ent = readdir(dir)) { | 90 while (struct dirent* ent = readdir(dir)) { |
206 pid_t tid = ProcDirSlotToPid(ent->d_name); | 91 if (ent->d_name[0] == '.') |
207 if (!tid) | |
208 continue; | 92 continue; |
209 | 93 |
210 // Synchronously reading files in /proc is safe. | 94 FilePath stat_path = path.AppendASCII(ent->d_name).AppendASCII("stat"); |
211 base::ThreadRestrictions::ScopedAllowIO allow_io; | |
212 | |
213 std::string stat; | 95 std::string stat; |
214 FilePath stat_path = task_path.Append(ent->d_name).Append(kStatFile); | |
215 if (file_util::ReadFileToString(stat_path, &stat)) { | 96 if (file_util::ReadFileToString(stat_path, &stat)) { |
216 int cpu = base::ParseProcStatCPU(stat); | 97 int cpu = base::ParseProcStatCPU(stat); |
217 if (cpu > 0) | 98 if (cpu > 0) |
218 total_cpu += cpu; | 99 total_cpu += cpu; |
219 } | 100 } |
220 } | 101 } |
221 closedir(dir); | 102 closedir(dir); |
222 | 103 |
223 return total_cpu; | 104 return total_cpu; |
224 } | 105 } |
225 | 106 |
226 // Read /proc/<pid>/status and returns the value for |field|, or 0 on failure. | 107 } // namespace |
227 // Only works for fields in the form of "Field: value kB". | 108 |
228 size_t ReadProcStatusAndGetFieldAsInt(pid_t pid, const std::string& field) { | 109 namespace base { |
229 FilePath stat_file = GetProcPidDir(pid).Append("status"); | 110 |
| 111 ProcessId GetParentProcessId(ProcessHandle process) { |
| 112 // Synchronously reading files in /proc is safe. |
| 113 base::ThreadRestrictions::ScopedAllowIO allow_io; |
| 114 |
| 115 FilePath stat_file = GetProcPidDir(process).Append("status"); |
230 std::string status; | 116 std::string status; |
231 { | 117 if (!file_util::ReadFileToString(stat_file, &status)) |
232 // Synchronously reading files in /proc is safe. | 118 return -1; |
233 base::ThreadRestrictions::ScopedAllowIO allow_io; | |
234 if (!file_util::ReadFileToString(stat_file, &status)) | |
235 return 0; | |
236 } | |
237 | 119 |
238 StringTokenizer tokenizer(status, ":\n"); | 120 StringTokenizer tokenizer(status, ":\n"); |
239 ParsingState state = KEY_NAME; | 121 ParsingState state = KEY_NAME; |
240 base::StringPiece last_key_name; | 122 StringPiece last_key_name; |
241 while (tokenizer.GetNext()) { | 123 while (tokenizer.GetNext()) { |
242 switch (state) { | 124 switch (state) { |
243 case KEY_NAME: | 125 case KEY_NAME: |
244 last_key_name = tokenizer.token_piece(); | 126 last_key_name = tokenizer.token_piece(); |
245 state = KEY_VALUE; | 127 state = KEY_VALUE; |
246 break; | 128 break; |
247 case KEY_VALUE: | 129 case KEY_VALUE: |
248 DCHECK(!last_key_name.empty()); | 130 DCHECK(!last_key_name.empty()); |
249 if (last_key_name == field) { | 131 if (last_key_name == "PPid") { |
250 std::string value_str; | 132 int ppid; |
251 tokenizer.token_piece().CopyToString(&value_str); | 133 base::StringToInt(tokenizer.token_piece(), &ppid); |
252 std::string value_str_trimmed; | 134 return ppid; |
253 TrimWhitespaceASCII(value_str, TRIM_ALL, &value_str_trimmed); | |
254 std::vector<std::string> split_value_str; | |
255 base::SplitString(value_str_trimmed, ' ', &split_value_str); | |
256 if (split_value_str.size() != 2 || split_value_str[1] != "kB") { | |
257 NOTREACHED(); | |
258 return 0; | |
259 } | |
260 size_t value; | |
261 if (!base::StringToUint64(split_value_str[0], &value)) { | |
262 NOTREACHED(); | |
263 return 0; | |
264 } | |
265 return value; | |
266 } | 135 } |
267 state = KEY_NAME; | 136 state = KEY_NAME; |
268 break; | 137 break; |
269 } | 138 } |
270 } | 139 } |
271 NOTREACHED(); | 140 NOTREACHED(); |
272 return 0; | |
273 } | |
274 | |
275 } // namespace | |
276 | |
277 namespace base { | |
278 | |
279 ProcessId GetParentProcessId(ProcessHandle process) { | |
280 size_t pid = ReadProcStatsAndGetFieldAsInt(process, VM_PPID); | |
281 if (pid) | |
282 return pid; | |
283 return -1; | 141 return -1; |
284 } | 142 } |
285 | 143 |
286 FilePath GetProcessExecutablePath(ProcessHandle process) { | 144 FilePath GetProcessExecutablePath(ProcessHandle process) { |
287 FilePath stat_file = GetProcPidDir(process).Append("exe"); | 145 FilePath stat_file = GetProcPidDir(process).Append("exe"); |
288 FilePath exe_name; | 146 FilePath exe_name; |
289 if (!file_util::ReadSymbolicLink(stat_file, &exe_name)) { | 147 if (!file_util::ReadSymbolicLink(stat_file, &exe_name)) { |
290 // No such process. Happens frequently in e.g. TerminateAllChromeProcesses | 148 // No such process. Happens frequently in e.g. TerminateAllChromeProcesses |
291 return FilePath(); | 149 return FilePath(); |
292 } | 150 } |
293 return exe_name; | 151 return exe_name; |
294 } | 152 } |
295 | 153 |
296 ProcessIterator::ProcessIterator(const ProcessFilter* filter) | 154 ProcessIterator::ProcessIterator(const ProcessFilter* filter) |
297 : filter_(filter) { | 155 : filter_(filter) { |
298 procfs_dir_ = opendir(kProcDir); | 156 procfs_dir_ = opendir(kProcDir); |
299 } | 157 } |
300 | 158 |
301 ProcessIterator::~ProcessIterator() { | 159 ProcessIterator::~ProcessIterator() { |
302 if (procfs_dir_) { | 160 if (procfs_dir_) { |
303 closedir(procfs_dir_); | 161 closedir(procfs_dir_); |
304 procfs_dir_ = NULL; | 162 procfs_dir_ = NULL; |
305 } | 163 } |
306 } | 164 } |
307 | 165 |
308 bool ProcessIterator::CheckForNextProcess() { | 166 bool ProcessIterator::CheckForNextProcess() { |
309 // TODO(port): skip processes owned by different UID | 167 // TODO(port): skip processes owned by different UID |
310 | 168 |
311 pid_t pid = kNullProcessId; | 169 dirent* slot = 0; |
| 170 const char* openparen; |
| 171 const char* closeparen; |
312 std::vector<std::string> cmd_line_args; | 172 std::vector<std::string> cmd_line_args; |
313 std::string stats_data; | |
314 std::vector<std::string> proc_stats; | |
315 | 173 |
316 // Arbitrarily guess that there will never be more than 200 non-process | 174 // Arbitrarily guess that there will never be more than 200 non-process |
317 // files in /proc. Hardy has 53 and Lucid has 61. | 175 // files in /proc. Hardy has 53. |
318 int skipped = 0; | 176 int skipped = 0; |
319 const int kSkipLimit = 200; | 177 const int kSkipLimit = 200; |
320 while (skipped < kSkipLimit) { | 178 while (skipped < kSkipLimit) { |
321 dirent* slot = readdir(procfs_dir_); | 179 slot = readdir(procfs_dir_); |
322 // all done looking through /proc? | 180 // all done looking through /proc? |
323 if (!slot) | 181 if (!slot) |
324 return false; | 182 return false; |
325 | 183 |
326 // If not a process, keep looking for one. | 184 // If not a process, keep looking for one. |
327 pid = ProcDirSlotToPid(slot->d_name); | 185 bool notprocess = false; |
328 if (!pid) { | 186 int i; |
| 187 for (i = 0; i < NAME_MAX && slot->d_name[i]; ++i) { |
| 188 if (!isdigit(slot->d_name[i])) { |
| 189 notprocess = true; |
| 190 break; |
| 191 } |
| 192 } |
| 193 if (i == NAME_MAX || notprocess) { |
329 skipped++; | 194 skipped++; |
330 continue; | 195 continue; |
331 } | 196 } |
332 | 197 |
333 if (!GetProcCmdline(pid, &cmd_line_args)) | 198 // Read the process's command line. |
| 199 std::string pid_string(slot->d_name); |
| 200 int pid; |
| 201 if (StringToInt(pid_string, &pid) && !GetProcCmdline(pid, &cmd_line_args)) |
334 continue; | 202 continue; |
335 | 203 |
336 if (!ReadProcStats(pid, &stats_data)) | 204 // Read the process's status. |
| 205 char buf[NAME_MAX + 12]; |
| 206 sprintf(buf, "/proc/%s/stat", slot->d_name); |
| 207 FILE* fp = fopen(buf, "r"); |
| 208 if (!fp) |
337 continue; | 209 continue; |
338 if (!ParseProcStats(stats_data, &proc_stats)) | 210 const char* result = fgets(buf, sizeof(buf), fp); |
| 211 fclose(fp); |
| 212 if (!result) |
339 continue; | 213 continue; |
340 | 214 |
341 std::string runstate = GetProcStatsFieldAsString(proc_stats, VM_STATE); | 215 // Parse the status. It is formatted like this: |
342 if (runstate.size() != 1) { | 216 // %d (%s) %c %d %d ... |
343 NOTREACHED(); | 217 // pid (name) runstate ppid gid |
| 218 // To avoid being fooled by names containing a closing paren, scan |
| 219 // backwards. |
| 220 openparen = strchr(buf, '('); |
| 221 closeparen = strrchr(buf, ')'); |
| 222 if (!openparen || !closeparen) |
344 continue; | 223 continue; |
345 } | 224 char runstate = closeparen[2]; |
346 | 225 |
347 // Is the process in 'Zombie' state, i.e. dead but waiting to be reaped? | 226 // Is the process in 'Zombie' state, i.e. dead but waiting to be reaped? |
348 // Allowed values: D R S T Z | 227 // Allowed values: D R S T Z |
349 if (runstate[0] != 'Z') | 228 if (runstate != 'Z') |
350 break; | 229 break; |
351 | 230 |
352 // Nope, it's a zombie; somebody isn't cleaning up after their children. | 231 // Nope, it's a zombie; somebody isn't cleaning up after their children. |
353 // (e.g. WaitForProcessesToExit doesn't clean up after dead children yet.) | 232 // (e.g. WaitForProcessesToExit doesn't clean up after dead children yet.) |
354 // There could be a lot of zombies, can't really decrement i here. | 233 // There could be a lot of zombies, can't really decrement i here. |
355 } | 234 } |
356 if (skipped >= kSkipLimit) { | 235 if (skipped >= kSkipLimit) { |
357 NOTREACHED(); | 236 NOTREACHED(); |
358 return false; | 237 return false; |
359 } | 238 } |
360 | 239 |
361 entry_.pid_ = pid; | 240 // This seems fragile. |
362 entry_.ppid_ = GetProcStatsFieldAsInt(proc_stats, VM_PPID); | 241 entry_.pid_ = atoi(slot->d_name); |
363 entry_.gid_ = GetProcStatsFieldAsInt(proc_stats, VM_PGRP); | 242 entry_.ppid_ = atoi(closeparen + 3); |
| 243 entry_.gid_ = atoi(strchr(closeparen + 4, ' ')); |
| 244 |
364 entry_.cmd_line_args_.assign(cmd_line_args.begin(), cmd_line_args.end()); | 245 entry_.cmd_line_args_.assign(cmd_line_args.begin(), cmd_line_args.end()); |
365 | 246 |
366 // TODO(port): read pid's commandline's $0, like killall does. Using the | 247 // TODO(port): read pid's commandline's $0, like killall does. Using the |
367 // short name between openparen and closeparen won't work for long names! | 248 // short name between openparen and closeparen won't work for long names! |
368 entry_.exe_file_ = GetProcStatsFieldAsString(proc_stats, VM_COMM); | 249 int len = closeparen - openparen - 1; |
| 250 entry_.exe_file_.assign(openparen + 1, len); |
369 return true; | 251 return true; |
370 } | 252 } |
371 | 253 |
372 bool NamedProcessIterator::IncludeEntry() { | 254 bool NamedProcessIterator::IncludeEntry() { |
373 if (executable_name_ != entry().exe_file()) | 255 if (executable_name_ != entry().exe_file()) |
374 return false; | 256 return false; |
375 return ProcessIterator::IncludeEntry(); | 257 return ProcessIterator::IncludeEntry(); |
376 } | 258 } |
377 | 259 |
378 | 260 |
379 // static | 261 // static |
380 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) { | 262 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) { |
381 return new ProcessMetrics(process); | 263 return new ProcessMetrics(process); |
382 } | 264 } |
383 | 265 |
384 // On linux, we return vsize. | 266 // On linux, we return vsize. |
385 size_t ProcessMetrics::GetPagefileUsage() const { | 267 size_t ProcessMetrics::GetPagefileUsage() const { |
386 return ReadProcStatsAndGetFieldAsInt(process_, VM_VSIZE); | 268 std::vector<std::string> proc_stats; |
| 269 if (!GetProcStats(process_, &proc_stats)) |
| 270 DLOG(WARNING) << "Failed to get process stats."; |
| 271 const size_t kVmSize = 22; |
| 272 if (proc_stats.size() > kVmSize) { |
| 273 int vm_size; |
| 274 base::StringToInt(proc_stats[kVmSize], &vm_size); |
| 275 return static_cast<size_t>(vm_size); |
| 276 } |
| 277 return 0; |
387 } | 278 } |
388 | 279 |
389 // On linux, we return the high water mark of vsize. | 280 // On linux, we return the high water mark of vsize. |
390 size_t ProcessMetrics::GetPeakPagefileUsage() const { | 281 size_t ProcessMetrics::GetPeakPagefileUsage() const { |
391 return ReadProcStatusAndGetFieldAsInt(process_, "VmPeak") * 1024; | 282 std::vector<std::string> proc_stats; |
| 283 if (!GetProcStats(process_, &proc_stats)) |
| 284 DLOG(WARNING) << "Failed to get process stats."; |
| 285 const size_t kVmPeak = 21; |
| 286 if (proc_stats.size() > kVmPeak) { |
| 287 int vm_peak; |
| 288 if (base::StringToInt(proc_stats[kVmPeak], &vm_peak)) |
| 289 return vm_peak; |
| 290 } |
| 291 return 0; |
392 } | 292 } |
393 | 293 |
394 // On linux, we return RSS. | 294 // On linux, we return RSS. |
395 size_t ProcessMetrics::GetWorkingSetSize() const { | 295 size_t ProcessMetrics::GetWorkingSetSize() const { |
396 return ReadProcStatsAndGetFieldAsInt(process_, VM_RSS) * getpagesize(); | 296 std::vector<std::string> proc_stats; |
| 297 if (!GetProcStats(process_, &proc_stats)) |
| 298 DLOG(WARNING) << "Failed to get process stats."; |
| 299 const size_t kVmRss = 23; |
| 300 if (proc_stats.size() > kVmRss) { |
| 301 int num_pages; |
| 302 if (base::StringToInt(proc_stats[kVmRss], &num_pages)) |
| 303 return static_cast<size_t>(num_pages) * getpagesize(); |
| 304 } |
| 305 return 0; |
397 } | 306 } |
398 | 307 |
399 // On linux, we return the high water mark of RSS. | 308 // On linux, we return the high water mark of RSS. |
400 size_t ProcessMetrics::GetPeakWorkingSetSize() const { | 309 size_t ProcessMetrics::GetPeakWorkingSetSize() const { |
401 return ReadProcStatusAndGetFieldAsInt(process_, "VmHWM") * 1024; | 310 std::vector<std::string> proc_stats; |
| 311 if (!GetProcStats(process_, &proc_stats)) |
| 312 DLOG(WARNING) << "Failed to get process stats."; |
| 313 const size_t kVmHwm = 23; |
| 314 if (proc_stats.size() > kVmHwm) { |
| 315 int num_pages; |
| 316 base::StringToInt(proc_stats[kVmHwm], &num_pages); |
| 317 return static_cast<size_t>(num_pages) * getpagesize(); |
| 318 } |
| 319 return 0; |
402 } | 320 } |
403 | 321 |
404 bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes, | 322 bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes, |
405 size_t* shared_bytes) { | 323 size_t* shared_bytes) { |
406 WorkingSetKBytes ws_usage; | 324 WorkingSetKBytes ws_usage; |
407 if (!GetWorkingSetKBytes(&ws_usage)) | 325 if (!GetWorkingSetKBytes(&ws_usage)) |
408 return false; | 326 return false; |
409 | 327 |
410 if (private_bytes) | 328 if (private_bytes) |
411 *private_bytes = ws_usage.priv * 1024; | 329 *private_bytes = ws_usage.priv << 10; |
412 | 330 |
413 if (shared_bytes) | 331 if (shared_bytes) |
414 *shared_bytes = ws_usage.shared * 1024; | 332 *shared_bytes = ws_usage.shared * 1024; |
415 | 333 |
416 return true; | 334 return true; |
417 } | 335 } |
418 | 336 |
419 // Private and Shared working set sizes are obtained from /proc/<pid>/statm. | 337 // Private and Shared working set sizes are obtained from /proc/<pid>/statm. |
420 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const { | 338 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const { |
421 // Use statm instead of smaps because smaps is: | 339 // Use statm instead of smaps because smaps is: |
422 // a) Large and slow to parse. | 340 // a) Large and slow to parse. |
423 // b) Unavailable in the SUID sandbox. | 341 // b) Unavailable in the SUID sandbox. |
424 | 342 |
425 // First we need to get the page size, since everything is measured in pages. | 343 // First we need to get the page size, since everything is measured in pages. |
426 // For details, see: man 5 proc. | 344 // For details, see: man 5 proc. |
427 const int page_size_kb = getpagesize() / 1024; | 345 const int page_size_kb = sysconf(_SC_PAGE_SIZE) / 1024; |
428 if (page_size_kb <= 0) | 346 if (page_size_kb <= 0) |
429 return false; | 347 return false; |
430 | 348 |
431 std::string statm; | 349 std::string statm; |
432 { | 350 { |
433 FilePath statm_file = GetProcPidDir(process_).Append("statm"); | 351 FilePath statm_file = GetProcPidDir(process_).Append("statm"); |
434 // Synchronously reading files in /proc is safe. | 352 // Synchronously reading files in /proc is safe. |
435 base::ThreadRestrictions::ScopedAllowIO allow_io; | 353 base::ThreadRestrictions::ScopedAllowIO allow_io; |
436 bool ret = file_util::ReadFileToString(statm_file, &statm); | 354 bool ret = file_util::ReadFileToString(statm_file, &statm); |
437 if (!ret || statm.length() == 0) | 355 if (!ret || statm.length() == 0) |
(...skipping 110 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
548 : process_(process), | 466 : process_(process), |
549 last_time_(0), | 467 last_time_(0), |
550 last_system_time_(0), | 468 last_system_time_(0), |
551 last_cpu_(0) { | 469 last_cpu_(0) { |
552 processor_count_ = base::SysInfo::NumberOfProcessors(); | 470 processor_count_ = base::SysInfo::NumberOfProcessors(); |
553 } | 471 } |
554 | 472 |
555 | 473 |
556 // Exposed for testing. | 474 // Exposed for testing. |
557 int ParseProcStatCPU(const std::string& input) { | 475 int ParseProcStatCPU(const std::string& input) { |
558 std::vector<std::string> proc_stats; | 476 // /proc/<pid>/stat contains the process name in parens. In case the |
559 if (!ParseProcStats(input, &proc_stats)) | 477 // process name itself contains parens, skip past them. |
| 478 std::string::size_type rparen = input.rfind(')'); |
| 479 if (rparen == std::string::npos) |
560 return -1; | 480 return -1; |
561 | 481 |
562 if (proc_stats.size() <= VM_STIME) | 482 // From here, we expect a bunch of space-separated fields, where the |
563 return -1; | 483 // 0-indexed 11th and 12th are utime and stime. On two different machines |
564 size_t utime = GetProcStatsFieldAsInt(proc_stats, VM_UTIME); | 484 // I found 42 and 39 fields, so let's just expect the ones we need. |
565 size_t stime = GetProcStatsFieldAsInt(proc_stats, VM_STIME); | 485 std::vector<std::string> fields; |
566 return utime + stime; | 486 base::SplitString(input.substr(rparen + 2), ' ', &fields); |
| 487 if (fields.size() < 13) |
| 488 return -1; // Output not in the format we expect. |
| 489 |
| 490 int fields11, fields12; |
| 491 base::StringToInt(fields[11], &fields11); |
| 492 base::StringToInt(fields[12], &fields12); |
| 493 return fields11 + fields12; |
567 } | 494 } |
568 | 495 |
569 namespace { | 496 namespace { |
570 | 497 |
571 // The format of /proc/meminfo is: | 498 // The format of /proc/meminfo is: |
572 // | 499 // |
573 // MemTotal: 8235324 kB | 500 // MemTotal: 8235324 kB |
574 // MemFree: 1628304 kB | 501 // MemFree: 1628304 kB |
575 // Buffers: 429596 kB | 502 // Buffers: 429596 kB |
576 // Cached: 4728232 kB | 503 // Cached: 4728232 kB |
577 // ... | 504 // ... |
578 const size_t kMemTotalIndex = 1; | 505 const size_t kMemTotalIndex = 1; |
579 const size_t kMemFreeIndex = 4; | 506 const size_t kMemFreeIndex = 4; |
580 const size_t kMemBuffersIndex = 7; | 507 const size_t kMemBuffersIndex = 7; |
581 const size_t kMemCachedIndex = 10; | 508 const size_t kMemCachedIndex = 10; |
582 const size_t kMemActiveAnonIndex = 22; | 509 const size_t kMemActiveAnonIndex = 22; |
583 const size_t kMemInactiveAnonIndex = 25; | 510 const size_t kMemInactiveAnonIndex = 25; |
584 | 511 |
585 } // namespace | 512 } // namespace |
586 | 513 |
587 bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo) { | 514 bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo) { |
588 // Synchronously reading files in /proc is safe. | 515 // Synchronously reading files in /proc is safe. |
589 base::ThreadRestrictions::ScopedAllowIO allow_io; | 516 base::ThreadRestrictions::ScopedAllowIO allow_io; |
590 | 517 |
591 // Used memory is: total - free - buffers - caches | 518 // Used memory is: total - free - buffers - caches |
592 FilePath meminfo_file("/proc/meminfo"); | 519 FilePath meminfo_file("/proc/meminfo"); |
593 std::string meminfo_data; | 520 std::string meminfo_data; |
594 if (!file_util::ReadFileToString(meminfo_file, &meminfo_data)) { | 521 if (!file_util::ReadFileToString(meminfo_file, &meminfo_data)) { |
595 DLOG(WARNING) << "Failed to open " << meminfo_file.value(); | 522 DLOG(WARNING) << "Failed to open /proc/meminfo."; |
596 return false; | 523 return false; |
597 } | 524 } |
598 std::vector<std::string> meminfo_fields; | 525 std::vector<std::string> meminfo_fields; |
599 SplitStringAlongWhitespace(meminfo_data, &meminfo_fields); | 526 SplitStringAlongWhitespace(meminfo_data, &meminfo_fields); |
600 | 527 |
601 if (meminfo_fields.size() < kMemCachedIndex) { | 528 if (meminfo_fields.size() < kMemCachedIndex) { |
602 DLOG(WARNING) << "Failed to parse " << meminfo_file.value() | 529 DLOG(WARNING) << "Failed to parse /proc/meminfo. Only found " << |
603 << ". Only found " << meminfo_fields.size() << " fields."; | 530 meminfo_fields.size() << " fields."; |
604 return false; | 531 return false; |
605 } | 532 } |
606 | 533 |
607 DCHECK_EQ(meminfo_fields[kMemTotalIndex-1], "MemTotal:"); | 534 DCHECK_EQ(meminfo_fields[kMemTotalIndex-1], "MemTotal:"); |
608 DCHECK_EQ(meminfo_fields[kMemFreeIndex-1], "MemFree:"); | 535 DCHECK_EQ(meminfo_fields[kMemFreeIndex-1], "MemFree:"); |
609 DCHECK_EQ(meminfo_fields[kMemBuffersIndex-1], "Buffers:"); | 536 DCHECK_EQ(meminfo_fields[kMemBuffersIndex-1], "Buffers:"); |
610 DCHECK_EQ(meminfo_fields[kMemCachedIndex-1], "Cached:"); | 537 DCHECK_EQ(meminfo_fields[kMemCachedIndex-1], "Cached:"); |
611 DCHECK_EQ(meminfo_fields[kMemActiveAnonIndex-1], "Active(anon):"); | 538 DCHECK_EQ(meminfo_fields[kMemActiveAnonIndex-1], "Active(anon):"); |
612 DCHECK_EQ(meminfo_fields[kMemInactiveAnonIndex-1], "Inactive(anon):"); | 539 DCHECK_EQ(meminfo_fields[kMemInactiveAnonIndex-1], "Inactive(anon):"); |
613 | 540 |
(...skipping 175 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
789 int score_len = static_cast<int>(score_str.length()); | 716 int score_len = static_cast<int>(score_str.length()); |
790 return (score_len == file_util::WriteFile(oom_file, | 717 return (score_len == file_util::WriteFile(oom_file, |
791 score_str.c_str(), | 718 score_str.c_str(), |
792 score_len)); | 719 score_len)); |
793 } | 720 } |
794 | 721 |
795 return false; | 722 return false; |
796 } | 723 } |
797 | 724 |
798 } // namespace base | 725 } // namespace base |
OLD | NEW |