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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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/process_metrics.h" | 5 #include "base/process/process_metrics.h" |
6 | 6 |
7 #include <dirent.h> | 7 #include <dirent.h> |
8 #include <fcntl.h> | 8 #include <fcntl.h> |
9 #include <stddef.h> | 9 #include <stddef.h> |
10 #include <stdint.h> | 10 #include <stdint.h> |
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85 return 0; | 85 return 0; |
86 } | 86 } |
87 return value; | 87 return value; |
88 } | 88 } |
89 } | 89 } |
90 // This can be reached if the process dies when proc is read -- in that case, | 90 // This can be reached if the process dies when proc is read -- in that case, |
91 // the kernel can return missing fields. | 91 // the kernel can return missing fields. |
92 return 0; | 92 return 0; |
93 } | 93 } |
94 | 94 |
95 #if defined(OS_LINUX) | 95 #if defined(OS_LINUX) || defined(OS_AIX) |
96 // Read /proc/<pid>/sched and look for |field|. On succes, return true and | 96 // Read /proc/<pid>/sched and look for |field|. On succes, return true and |
97 // write the value for |field| into |result|. | 97 // write the value for |field| into |result|. |
98 // Only works for fields in the form of "field : uint_value" | 98 // Only works for fields in the form of "field : uint_value" |
99 bool ReadProcSchedAndGetFieldAsUint64(pid_t pid, | 99 bool ReadProcSchedAndGetFieldAsUint64(pid_t pid, |
100 const std::string& field, | 100 const std::string& field, |
101 uint64_t* result) { | 101 uint64_t* result) { |
102 std::string sched_data; | 102 std::string sched_data; |
103 { | 103 { |
104 // Synchronously reading files in /proc does not hit the disk. | 104 // Synchronously reading files in /proc does not hit the disk. |
105 ThreadRestrictions::ScopedAllowIO allow_io; | 105 ThreadRestrictions::ScopedAllowIO allow_io; |
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117 if (key == field) { | 117 if (key == field) { |
118 uint64_t value; | 118 uint64_t value; |
119 if (!StringToUint64(value_str, &value)) | 119 if (!StringToUint64(value_str, &value)) |
120 return false; | 120 return false; |
121 *result = value; | 121 *result = value; |
122 return true; | 122 return true; |
123 } | 123 } |
124 } | 124 } |
125 return false; | 125 return false; |
126 } | 126 } |
127 #endif // defined(OS_LINUX) | 127 #endif // defined(OS_LINUX) || defined(OS_AIX) |
128 | 128 |
129 // Get the total CPU of a single process. Return value is number of jiffies | 129 // Get the total CPU of a single process. Return value is number of jiffies |
130 // on success or -1 on error. | 130 // on success or -1 on error. |
131 int GetProcessCPU(pid_t pid) { | 131 int GetProcessCPU(pid_t pid) { |
132 // Use /proc/<pid>/task to find all threads and parse their /stat file. | 132 // Use /proc/<pid>/task to find all threads and parse their /stat file. |
133 FilePath task_path = internal::GetProcPidDir(pid).Append("task"); | 133 FilePath task_path = internal::GetProcPidDir(pid).Append("task"); |
134 | 134 |
135 DIR* dir = opendir(task_path.value().c_str()); | 135 DIR* dir = opendir(task_path.value().c_str()); |
136 if (!dir) { | 136 if (!dir) { |
137 DPLOG(ERROR) << "opendir(" << task_path.value() << ")"; | 137 DPLOG(ERROR) << "opendir(" << task_path.value() << ")"; |
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286 else if (key == "wchar") | 286 else if (key == "wchar") |
287 target_counter = &io_counters->WriteTransferCount; | 287 target_counter = &io_counters->WriteTransferCount; |
288 if (!target_counter) | 288 if (!target_counter) |
289 continue; | 289 continue; |
290 bool converted = StringToUint64(value_str, target_counter); | 290 bool converted = StringToUint64(value_str, target_counter); |
291 DCHECK(converted); | 291 DCHECK(converted); |
292 } | 292 } |
293 return true; | 293 return true; |
294 } | 294 } |
295 | 295 |
296 #if defined(OS_LINUX) | 296 #if defined(OS_LINUX) || defined(OS_AIX) |
297 int ProcessMetrics::GetOpenFdCount() const { | 297 int ProcessMetrics::GetOpenFdCount() const { |
298 // Use /proc/<pid>/fd to count the number of entries there. | 298 // Use /proc/<pid>/fd to count the number of entries there. |
299 FilePath fd_path = internal::GetProcPidDir(process_).Append("fd"); | 299 FilePath fd_path = internal::GetProcPidDir(process_).Append("fd"); |
300 | 300 |
301 DirReaderPosix dir_reader(fd_path.value().c_str()); | 301 DirReaderPosix dir_reader(fd_path.value().c_str()); |
302 if (!dir_reader.IsValid()) | 302 if (!dir_reader.IsValid()) |
303 return -1; | 303 return -1; |
304 | 304 |
305 int total_count = 0; | 305 int total_count = 0; |
306 for (; dir_reader.Next(); ) { | 306 for (; dir_reader.Next(); ) { |
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330 int limit = -1; | 330 int limit = -1; |
331 if (StringToInt(tokens[3], &limit)) | 331 if (StringToInt(tokens[3], &limit)) |
332 return limit; | 332 return limit; |
333 return -1; | 333 return -1; |
334 } | 334 } |
335 } | 335 } |
336 } | 336 } |
337 return -1; | 337 return -1; |
338 } | 338 } |
339 | 339 |
340 #endif // defined(OS_LINUX) | 340 #endif // defined(OS_LINUX) || defined(OS_AIX) |
341 | 341 |
342 ProcessMetrics::ProcessMetrics(ProcessHandle process) | 342 ProcessMetrics::ProcessMetrics(ProcessHandle process) |
343 : process_(process), | 343 : process_(process), |
344 last_system_time_(0), | 344 last_system_time_(0), |
345 #if defined(OS_LINUX) | 345 #if defined(OS_LINUX) || defined(OS_AIX) |
346 last_absolute_idle_wakeups_(0), | 346 last_absolute_idle_wakeups_(0), |
347 #endif | 347 #endif |
348 last_cpu_(0) { | 348 last_cpu_(0) { |
349 processor_count_ = SysInfo::NumberOfProcessors(); | 349 processor_count_ = SysInfo::NumberOfProcessors(); |
350 } | 350 } |
351 | 351 |
352 #if defined(OS_CHROMEOS) | 352 #if defined(OS_CHROMEOS) |
353 // Private, Shared and Proportional working set sizes are obtained from | 353 // Private, Shared and Proportional working set sizes are obtained from |
354 // /proc/<pid>/totmaps | 354 // /proc/<pid>/totmaps |
355 bool ProcessMetrics::GetWorkingSetKBytesTotmaps(WorkingSetKBytes *ws_usage) | 355 bool ProcessMetrics::GetWorkingSetKBytesTotmaps(WorkingSetKBytes *ws_usage) |
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950 swap_info->orig_data_size = orig_data_size; | 950 swap_info->orig_data_size = orig_data_size; |
951 swap_info->num_reads = ReadFileToUint64(zram_path.Append("num_reads")); | 951 swap_info->num_reads = ReadFileToUint64(zram_path.Append("num_reads")); |
952 swap_info->num_writes = ReadFileToUint64(zram_path.Append("num_writes")); | 952 swap_info->num_writes = ReadFileToUint64(zram_path.Append("num_writes")); |
953 swap_info->compr_data_size = | 953 swap_info->compr_data_size = |
954 ReadFileToUint64(zram_path.Append("compr_data_size")); | 954 ReadFileToUint64(zram_path.Append("compr_data_size")); |
955 swap_info->mem_used_total = | 955 swap_info->mem_used_total = |
956 ReadFileToUint64(zram_path.Append("mem_used_total")); | 956 ReadFileToUint64(zram_path.Append("mem_used_total")); |
957 } | 957 } |
958 #endif // defined(OS_CHROMEOS) | 958 #endif // defined(OS_CHROMEOS) |
959 | 959 |
960 #if defined(OS_LINUX) | 960 #if defined(OS_LINUX) || defined(OS_AIX) |
961 int ProcessMetrics::GetIdleWakeupsPerSecond() { | 961 int ProcessMetrics::GetIdleWakeupsPerSecond() { |
962 uint64_t wake_ups; | 962 uint64_t wake_ups; |
963 const char kWakeupStat[] = "se.statistics.nr_wakeups"; | 963 const char kWakeupStat[] = "se.statistics.nr_wakeups"; |
964 return ReadProcSchedAndGetFieldAsUint64(process_, kWakeupStat, &wake_ups) ? | 964 return ReadProcSchedAndGetFieldAsUint64(process_, kWakeupStat, &wake_ups) ? |
965 CalculateIdleWakeupsPerSecond(wake_ups) : 0; | 965 CalculateIdleWakeupsPerSecond(wake_ups) : 0; |
966 } | 966 } |
967 #endif // defined(OS_LINUX) | 967 #endif // defined(OS_LINUX) || defined(OS_AIX) |
968 | 968 |
969 } // namespace base | 969 } // namespace base |
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